CN114953936A

CN114953936A - Cable system, cable tensioning device and protective device for a vehicle interior

Info

Publication number: CN114953936A
Application number: CN202110187241.1A
Authority: CN
Inventors: A·布库尔
Original assignee: BOS GmbH and Co KG
Current assignee: BOS GmbH and Co KG
Priority date: 2021-02-18
Filing date: 2021-02-18
Publication date: 2022-08-30

Abstract

Cable system for a protective device, cable tensioning device for such a cable system and cable system having a protective device for a vehicle interior: having a cable which is deflected around a deflection roller while forming two strands running at least partially parallel to one another; and has a cable tensioning device associated with the traction cable. According to the invention, the cable tensioning device has a dimensionally stable guide structure which has in each case at least one inlet and at least one outlet for the two strands to pass through, and a tension compensation unit is arranged in the guide structure, which is supported so as to be movable in a floating manner between the two strands transversely to the strands and is permanently in contact with the two strands. The device is used in a car.

Description

Cable system, cable tensioning device and protective device for a vehicle interior

Technical Field

The invention relates to a cable system for a protective device for a vehicle interior, which cable system: having a cable which is deflected around a deflection roller while forming two strands running at least partially parallel to one another; and has a cable tensioning device associated with the traction cable. The invention further relates to a cable tensioning device for such a cable system and to a protective device for a vehicle interior having at least one cable system of the type described above.

Background

EP 2028053 a1 discloses a cable system for a cargo compartment flap of a vehicle interior, in which the cable is turned 180 ° around a deflecting roller on the end side of the guide rail. Two strands are thereby formed, which are articulated in the region of the guide rail by means of a length adjustment device at opposite end regions of the guide rail.

DE 102018201023 a1 discloses a cable system for a window lifter assembly of a door module of a vehicle interior of a passenger car. The cable system has a cable whose strand is prestressed in the region of the cable drum by a strip-shaped and elastically flexible compensating element.

Disclosure of Invention

The object of the invention is to provide a cable system, a cable tensioning device and a protective device of the type mentioned at the outset which allow a uniform and reliable functioning of the cable to be achieved with simple means.

For the cable system, this task is solved by: the cable tensioning device has a dimensionally stable guide structure which has in each case at least one inlet and at least one outlet for the two strands to pass through, and tension compensation units are arranged in the guide structure, which are supported so as to be movable in a floating manner transversely to the strands between the two strands and which are permanently in contact with the two strands. The guide structure can be designed as an open support structure or as a closed housing. The two strands are at least slightly deflected in the region of the floating tension compensation unit. The tension compensation unit thus brings about tension compensation simultaneously on both strands. Due to the permanent contact with the two strands and due to the floating mounting, a tension peak in one of the two strands inevitably causes a movement of the tension compensation unit and thus a force transmission to the opposite strand. As a result, a uniform tension of the two strands can be permanently obtained, as a result of which a uniform tension is produced for the cable system during operation without a tension dip or a tension peak. The solution according to the invention is provided in a particularly advantageous manner for a protective device in the form of a sun shading device, i.e. a shading device for a side window or rear window or for a transparent roof region of a vehicle interior. As an alternative, the cable system is provided for a protective device in the form of a cargo compartment protective device, in particular for a cargo compartment cover or a cargo compartment separation device.

In one embodiment of the invention, the tension compensation unit has two compensation sections which can be moved in a limited manner relative to one another, the compensation sections being spring-loaded opposite one another. The level of spring loading defines the level of tension that can be applied to the strand.

In a further embodiment of the invention, the spring loading of the compensation segments is formed by a mechanical spring device which is operatively connected to both compensation segments. The mechanical spring device can be formed by at least one elastomer element or by a metal spring, such as in particular at least one helical spring or at least one leaf spring. The at least one helical spring or the at least one leaf spring can also be formed from a non-metallic, elastically flexible material. A helical spring, which is preferably designed as a compression spring, extends between the two compensation segments. The mechanical spring device is operatively connected to the two compensating sections, whereby a single spring device is sufficient for charging the two compensating sections.

In a further embodiment of the invention, the compensating section has a sliding surface or a rolling surface along which the cable strand is guided. The strand is thereby slid along the respective guide surface of the compensation section or the respective guide surface is mounted so as to be movable in a rolling manner, so that the guide surfaces rotate together in the respective direction when the respectively adjacent strand is moved.

In a further embodiment of the invention, the guide structure is designed as a housing having a housing cover which forms the linear guide and the inlet and outlet and having a cover device which closes the housing cover, in particular in a releasable manner. Thereby, easy mounting or dismounting of the tension compensation unit can be achieved. Furthermore, the construction of the guide structure as a housing results in a compact and contamination-insensitive structure. The inlet and outlet for the cable strand can either be integrally formed on the housing shell or be designed as a separate inlet or outlet connection piece and be fixed to the housing shell.

In a further embodiment of the invention, the inlet and outlet are provided with holding receptacles for fixing guide sleeves which at least partially surround and guide the strand. The guide sleeve is in particular in the form of a bowden traction sleeve. The guide sleeve can guide the strand over at least a part of its length for protecting the strand. The holding receptacle advantageously surrounds the guide sleeve for the strand in a force-fitting or form-fitting manner.

With a cable tensioning device of the type mentioned at the outset, the object of the invention is achieved by the features of claim 7. The cable tensioning device can be designed such that it can be installed later into existing cable systems. The cable tensioning device can also be installed later in an already installed cable system if the inlet and outlet are constructed as open structures transverse to the threading direction of the cable strand. If the guide structure has a housing cover with releasable cover means, the housing cover can be provided with slots in the region of the inlet and outlet opening, which slots open toward the cover means and through which the cable strand can be introduced. After the strand has been installed, the cover device can be slipped on and the housing forming the guide structure can be closed. The cover device can be constructed as a one-piece or multi-piece construction.

With a protective device of the type mentioned at the outset, the object of the invention is achieved by the features of claim 8.

Drawings

Further advantages and features of the invention emerge from the claims and from the following description of a preferred embodiment of the invention, which is illustrated by means of the drawings.

Fig. 1 shows a perspective and schematic illustration of a side door of a passenger car, which on the side facing the vehicle interior is provided with an embodiment of a protective device according to the invention, with an embodiment of a cable system according to the invention and with an embodiment of a cable tensioning device according to the invention;

fig. 2 shows an enlarged sectional view of one of the two cable tensioning devices in a first functional position in section II according to fig. 1;

fig. 3 shows the cable tensioning device according to fig. 2 in another functional position;

fig. 4 shows a further embodiment of a cable tensioning device according to the invention, similar to fig. 2 and 3, in an enlarged sectional view; and is

Fig. 5 shows a cable tensioning device according to fig. 4 in a perspective view.

Detailed Description

Passenger vehicles have two front seats and a rear seat arrangement of at least two rear seats in the vehicle interior. Not only the front row seats but also the rear row seats can be accessed through the side doors of the car. The side door for the rear seat is also referred to as a rear side door. Such a rear side door 1, which is the left rear side door 1 as viewed in the normal driving direction of the passenger car, is shown in fig. 1. The rear side door 1 is provided with a side pane, not shown in detail, which can be shaded by means of a protective device in the form of a shading device 2. The shading device 2 has a flexible shading structure 3 which is held in a rollable and unrollable manner on a roller which is rotatably supported in a cassette housing. The cassette case 4 is fixed to the inner side of the door below the door belt line. Said shading structure 3 is movable in the vertical direction between a shading position shown in fig. 1 and a rest position wound onto a reel inside the cassette housing 4. In order to be able to move the shading structure 3 between the rest position and the shading position, the shading structure 3 is provided with a dimensionally stable pull-out profile 5 in the front end region thereof in the pull-out direction. The pull-out profile 5 is displaceable in the vertical direction in a linear guide 5a fixed to the vehicle door. In this case, the pull-out profile 5 is provided with a slide, not shown in detail, in the region of the left-hand linear guide 5b and with a further slide, also not shown in detail, in the region of the right-hand linear guide 5 a. The

linear guides

5a and 5b have a complementary rail profile to the slide for enabling longitudinal movability of the slide within the rail profile of the

linear guides

5a and 5 b. The winding force of the winding spring integrated in the winding shaft acts on shading structure 3 in the winding direction and thus in the direction of the rest position. In a variant according to the invention, the reel can be applied without a winding spring. In this variant, which is not shown, the rotational movement of the winding shaft in the winding direction of the shading structure 3 is effected by other means, in particular by a cable drum.

The slide of the two

linear guides

5a and 5b associated with the pull-out profile 5 is coupled to a cable system, which in the exemplary embodiment shown comprises two

cables

7a and 7b, one cable 7a running along the linear guide 5a and the other cable 7b running along the linear guide 5 b. Each

cable system

7a, 7b has a traction cable which is deflected by deflecting

rollers

8a, 8b at the upper end region of the respective

linear guide

5a, 5b, whereby each

cable

7a, 7b forms two strands which are substantially parallel to one another. The cable strand is guided in the guide sleeve at least partially according to the pattern of the bowden cable system. In the region of the drive mechanism 6, the two cables are held in a manner not shown on at least one cable drum, which can be driven by an electric motor of the drive mechanism 6. The drive mechanism 6 enables a synchronous drive of the two

cables

7a and 7b, so that the slides of the pull-out profile 5 can be moved parallel to each other and synchronously inside the

linear guides

5a and 5 b. This necessarily causes a parallel displacement of the pull-out profile 5 between a rest position of the shading structure 3, in which the pull-out profile 5 enters the pull-out gap of the cassette housing, and a shading position according to fig. 1, in which the pull-out profile 5 is positioned in the region of the upper edge of the rear side door 1, which edge delimits the side window pane, of the door frame.

In order to apply a permanently uniform tension to the two

cables

7a and 7b, a

cable tensioning device

10a, 10b is assigned to each

cable

7a and 7b, which is described in detail below with reference to fig. 2 and 3. The two

cable tensioners

10a and 10b for the

cables

7a, 7b, respectively, are constructed identically to one another, so that only one

cable tensioner

10a, 10b has to be described in detail below. The description applies in the same way to the other

cable tensioning device

10a, 10 b. The two

cable tensioners

10a and 10b each have a housing G, wherein the housings G are mounted immediately above one another in the illustration according to fig. 1, so that only the upper housing G in the plane of the drawing can be seen in fig. 1.

The housing G according to fig. 2 and 3 is made of plastic and has a housing shell in which, transversely to the longitudinal extent of the cable strands, a bottom-side guide plane 17 is provided, which has a guide channel 23 on both sides. The guide channel 23 has a guide groove which is open toward the center and thus toward the opposite guide channel 23, in which guide groove the two

slide segments

18, 19 of the tension compensation unit are supported in a linearly movable manner. The

slider sections

18 and 19 form compensation sections in the sense of the present invention. Each

slide segment

18, 19 has, on its opposite outer side, guide webs, not shown in detail, which are guided in guide channels 23. Alternatively or additionally, a preferably cylindrical guide contour can be integrated in the housing G in the region of the guide plane, which penetrates the

slider sections

18, 19 for improving the desired linear guidance transversely to the longitudinal extent of the cable strand.

The two

slider sections

18 and 19 are coupled to one another by means of limiting

webs

21 and 22, wherein the

slider sections

18, 19 can move relative to one another in a limited linear manner. The limiting

sections

21 and 22 define end stops for preventing the

slider sections

18, 19 from loosening from each other. Between the two

slide segments

18 and 19, a helical compression spring 20 extends, which represents a mechanical spring device in the sense of the present invention. The two

slide devices

18, 19 are thereby permanently spring-loaded against one another. In the absence of an additional load from the outside, the helical compression spring 20 therefore presses the

slider sections

18, 19 relative to one another into an outer end position, i.e. into a position in which the delimiting

sections

21 and 22 bear against one another with the supporting lugs respectively engaging into one another. For this purpose, each limiting

section

21, 22 has, on the one hand, a parting strip bead extending from the

respective slide section

18, 19 in the linear displacement direction, which parting strip bead engages at the end with the aid of a parting strip lug in an unsheathed guide groove of the other parting strip bead.

As can be seen from fig. 2 and 3, the two guide channels 23 are provided in the central region with an upwardly open installation recess 24 through which the slider section 18 can be inserted and removed again for installation or removal.

After the

cables

11, 12 and the tension compensation unit have been installed in the interior of the housing G in the functionally ready state, the housing G is closed by means of an upwardly open housing cover, shown in fig. 2 and 3, by means of a cover device, not shown. The cover device can be releasably fixed on the housing shell for providing the interior of the housing shell with access.

The two

slider sections

18, 19 have on their outer end sides facing the opposite housing wall of the housing G a slot-like or groove-like outwardly open cable guide channel into which the

cable strands

11, 12 of the

cables

7a, 7b each enter in a slidably movable manner. For threading the

strands

11, 12 of the

respective guy cables

7a, 7b, the housing has two inlets and two outlets which are arranged on opposite sides of the housing G transversely to the linear movement direction of the tension compensation unit. Each inlet and each outlet is formed by a passage in the housing wall. Furthermore, a holding receptacle 13 to 16 for the respective guide sleeve of the

strand

11, 12 of the

cable

7a, 7b is assigned to each inlet and each outlet. These holding

receptacles

15 and 16 are formed on the outer side of the housing G and have clamping sections, by means of which the guide sleeves are fixed in a force-fitting manner on the holding receptacles 13 to 16. As can be seen from fig. 2 and 3, the housing G has, on the inner side of the inlet and outlet, a circular-arc-shaped deflecting portion which is fastened to the housing and which is provided to ensure a deflecting radius for the

strands

11, 12 which is defined relative to the housing G when the

strands

11, 12 are introduced and removed.

In which direction a tensile force is exerted on the

respective cable

7a, 7b by the drive mechanism 6, either one strand 11 or the other strand 12 is subjected to a tensile load. In the case of a pulling movement of the pull-out profile 5 from the rest position in the direction of the shade position, a tensile force is thereby applied to one of the

strands

11, 12, and in the case of a movement of the pull-out profile opposite to the direction of the rest position from the shade position, a tensile force is applied to the

other strand

11, 12 as a result of the inevitable reversal of the drive 6. As a result, the tensile force acting on one of the two

strands

11, 12 during the drive movement by the drive 6 is always higher than the tensile force acting on the

other strand

11, 12. In the illustration according to fig. 2, the increased tension acts on the right strand 12, whereas in the illustration according to fig. 3, the increased tension acts on the left strand 11. The tension compensation unit, which is formed by the two

slider sections

18 and 19 with the helical compression spring 20 located between them, is thus moved in a linearly movable manner inside the housing G, as shown in fig. 2 and 3, in each case on account of its floating mounting transversely to the pulling direction of the

strands

11, 12. The spring pressure of the helical compression spring 20 is selected such that the

slide segments

18, 19 are never in the end stop position relative to each other when the

strands

11, 12 are subjected to a corresponding tensile load. This means that the

slider portions

18, 19 are also arranged floating relative to one another, so that in the region of contact on the

slider portions

18, 19 transversely to the cable pulling direction, only the pressure of the helical compression spring 20 acts on the

respective cable strand

11, 12, respectively, orthogonally to the cable pulling direction. The helical compression spring 20 has a linear spring characteristic, wherein the compression spring force increases with a displacement with which the

slide segments

18, 19 are pressed against one another. The helical compression spring 20 is matched to the occurring tensile forces of the

respective cables

7a, 7b with respect to its spring force and with respect to its spring characteristic.

As an alternative to the

cable tensioners

10a, 10b according to fig. 2 and 3, the protection device according to the invention according to fig. 1 can also have a cable system with two cables 7 'a and 7' b, to which the cable tensioners 10 'a, 10' b according to fig. 4 and 5 are assigned, respectively. With regard to construction and function, such cable tensioners 10 'a and 10' b are largely identical to the previously described

cable tensioners

10a, 10 b. Therefore, identical parts and sections of the cable tensioners 10 'a, 10' b are provided with the same reference numerals as the

cable tensioners

10a, 10b with the addition of a prime. In order to avoid repetitions, reference is made to the explanations relating to the

cable tensioning devices

10a, 10b according to fig. 1 to 3. Only the differences of the cable tensioners 10 'a, 10' b will be discussed below.

In the case of the

cable tensioning devices

10a, 10b according to fig. 2 and 3, the

slider sections

18 and 19 are provided with channel-like or groove-like cable guide channels which are open to the outside and curved in the shape of a circular arc and form sliding surfaces for the

cables

11, 12. In the case of the cable tensioning devices 10 ' a, 10 ' b according to fig. 4 and 5, the slide segment 18 ' has an annular cable guide channel which is arranged on the outer circumference of a rotatably movable wheel or roller, respectively. The slide segments 18 'and 19' are provided with cylindrical main journals, to which two rotatably movable annular discs are rotatably inserted. In this way, each annular cable guide channel of the respective wheel for the respective cable strand 11 ', 12' forms a rolling surface in the sense of the invention with the section of the cable guide channel that guides the respective cable strand 11 ', 12'. Since the respective cable strand 11 ', 12' does not slide in the corresponding annular groove of the respective freely rotatable wheel disc, but rather carries the respective wheel disc along the respective direction of rotation, a rolling bearing is thereby produced for the respective cable strand.

The cable tensioners 10 ' a, 10 ' b are furthermore distinguished from the previously described

cable tensioners

10a, 10b in that the retaining receptacles 13 ' to 16 ' which are molded on the housing G ' are each arranged in pairs at a greater distance from one another than the retaining receptacles 13 to 16. In addition, the respectively adjacent retaining receptacles 15 ', 16 ' and 13 ', 14 ' are each connected to one another in one piece by a transverse web, not designated in greater detail, which is also integrally molded on the outer edge of the housing G '.

The slide segments 18 ', 19 ' are supported in a linearly displaceable manner independently of one another centrally on a cylindrical guide contour of the guide plane 17 '. This produces a floating mounting of the slider sections 18 ', 19'. The slider sections 18 ', 19 ' are coupled by a helical compression spring 20 ' acting as a spring device, which acts to some extent as a buffer between the two slider sections. The helical compression springs 20 ' are each supported with their opposite ends on the end faces of the respective slide portion 18 ', 19 '. The helical compression spring 20 ' is permanently prestressed during operation of the cable tensioning devices 10 ' a, 10 ' b, since the two floatingly mounted slider sections 18 ', 19 ' are permanently loaded with force toward the center due to the cable strands 11 ', 12 ' respectively encircling the outer side and the corresponding cable tension.

The right-hand wheel disk of the slide segment 19 ' is omitted for the purpose of describing the slide function of the slide segments 18 ', 19 ' and for the purpose of explaining the rotary bearing function for the annular wheel disk, so that the main journal for this wheel rib can be clearly seen.

Claims

1. Cable system for a protective device for a vehicle interior: having a cable (7 a, 7 b; 7 'a, 7' b) which is deflected around a deflection roller (8 a, 8 b; 8 'a, 8' b) while forming two strands (11, 12; 11 ', 12') running at least partially parallel to one another; and having a cable tensioning device (10 a, 10 b; 10 'a, 10' b) associated with the traction cable (7 a, 7 b; 7 'a, 7' b), characterized in that the cable tensioning device (10 a, 10 b; 10 'a, 10' b) has a dimensionally stable guide structure which in each case has at least one inlet and at least one outlet for the two cable strands (11, 12; 11 ', 12') to pass through, and in that a tension compensation unit is provided which is supported in such a way that it can be moved in a floating manner transversely to the cable strands (11, 12; 11 ', 12') between the two cable strands (11, 12; 11 ', 12') and which is permanently in contact with the two cable strands (11, 12; 11 ', 12').

2. Cable system according to claim 1, characterised in that the tension compensation unit has two compensation sections (18, 19; 18 ', 19') which are limitedly movable relative to one another and which are spring-loaded opposite one another.

3. Cable system according to claim 2, characterised in that the spring loading of the compensating section (18, 19; 18 ', 19 ') is formed by a mechanical spring device (20; 20 ') which is in operative connection with the two compensating sections (18, 19; 18 ', 19 ').

4. Cable system according to one of claims 1 to 3, characterised in that the compensating section (18, 19; 18 ', 19') has a sliding or rolling surface along which the cable strand (11, 12; 11 ', 12') is guided.

5. A cable system according to any one of the preceding claims, characterised in that the guide arrangement has a linear guide mechanism for a tension compensating unit.

6. Cable system according to one of the preceding claims, characterized in that the guide structure is configured as a housing (G; G') having a housing cover which forms the linear guide and the inlet and outlet and having a cover device which closes the housing cover, in particular in a releasable manner.

7. Cable system according to one of the preceding claims, characterised in that the inlet and outlet are provided with retaining receptacles (13 to 16; 13 'to 16') for fixing guide sleeves which at least partially enclose and guide the strands.

8. Cable tensioning device for a cable system according to one of the preceding claims, having a dimensionally stable guide structure which in each case has at least one inlet and at least one outlet for at least two cable strands (11, 12; 11 ', 12') to pass through and in which a tension compensation unit is supported in such a way that it can be moved in a floating manner transversely to the cable strands (11, 12; 11 ', 12') between the two cable strands (11, 12; 11 ', 12'), which tension compensation unit, in the installed functional state, is in permanent contact with the two cable strands (11, 12; 11 ', 12').

9. Protection device for a vehicle interior, having at least one cable system according to one of claims 1 to 7.