US20180345825A1 - Adjustment device for adjusting a longitudinal position of a vehicle seat - Google Patents
Adjustment device for adjusting a longitudinal position of a vehicle seat Download PDFInfo
- Publication number
- US20180345825A1 US20180345825A1 US15/612,402 US201715612402A US2018345825A1 US 20180345825 A1 US20180345825 A1 US 20180345825A1 US 201715612402 A US201715612402 A US 201715612402A US 2018345825 A1 US2018345825 A1 US 2018345825A1
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- US
- United States
- Prior art keywords
- guide rail
- spindle
- holding device
- adjustment device
- plastics material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/067—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable by linear actuators, e.g. linear screw mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/07—Slide construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/07—Slide construction
- B60N2/0702—Slide construction characterised by its cross-section
- B60N2/0715—C or U-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2205/00—General mechanical or structural details
- B60N2205/20—Measures for elimination or compensation of play or backlash
Definitions
- the invention relates to an adjustment device for adjusting a longitudinal position of a vehicle seat.
- the position of a vehicle seat can be adjusted by means of an adjustment device comprising guide rails, an upper guide rail being slidably arranged on a lower guide rail such that the vehicle seat connected to the upper guide rail can be adjusted in its longitudinal position within the vehicle by sliding the upper guide rail along the lower guide rail for example connected to a vehicle floor.
- an adjustment device comprising guide rails, an upper guide rail being slidably arranged on a lower guide rail such that the vehicle seat connected to the upper guide rail can be adjusted in its longitudinal position within the vehicle by sliding the upper guide rail along the lower guide rail for example connected to a vehicle floor.
- An adjustment device of this kind may for example comprise a spindle fixed to a first of the guide rails and being in operative connection with a gearing fixed to a second of the guide rails.
- the gearing for example comprises a spindle nut driven by an electric drive device such that by rotating the spindle nut with respect to the spindle the gearing (and together with the gearing the second guide rail) can be moved longitudinally along the spindle.
- the guide rails of the adjustment device hence are held in position with respect to each other via the gearing being in operative connection with the spindle.
- the gearing herein is fixed to the second guide rail such that forces can be transferred from the gearing to the second guide rail and from the second guide rail to the vehicle seat in order to adjust the position of the vehicle seat.
- the spindle needs to be reliably fastened to the first guide rail.
- this is achieved by means of holding devices in the shape of metal holding brackets, which for example may be welded or riveted to the first guide rail, for example to a base of the first guide rail such that via the holding devices a fixation of the spindle with respect to the first guide rail is established.
- This type of attachment typically requires multiple parts and adds to the assembly process, the cycle time and the cost of the product.
- an adjustment device for adjusting a longitudinal position of a vehicle seat comprises a first guide rail, a spindle extending along a longitudinal axis, a holding device connecting the spindle to the first guide rail, a second guide rail being linearly movable along the longitudinal axis with respect to the first guide rail, and a gearing fixed to the second guide rail, the gearing being in operative connection with the spindle to move the second guide rail relative to the first guide rail.
- the holding device comprises a body fixed to the first guide rail and made from a plastics material.
- the body may have a block shape.
- the body may be made from a plastics material comprising an elastomer.
- the holding device may comprise an insert element fixed to the body, the insert element for example being overmolded with the material of the body.
- the body is made from a first plastics material
- the insert element is made from a second plastics material differing from the first plastics material.
- the first plastics material may have a first elastic modulus
- the second plastics material may have a second elastic modulus, the first elastic modulus being smaller than the second elastic modulus.
- FIG. 1 shows a perspective view of an embodiment of an adjustment device adapted to longitudinally adjust the position of a vehicle seat
- FIG. 2 shows a schematic view of the functional operation of the adjustment device.
- FIG. 3 shows a view of a holding device of an adjustment device to fix a spindle to an associated, first guide rail, according to a first embodiment
- FIG. 4 shows a partially cut view of the arrangement of FIG. 3 ;
- FIG. 5 shows a partially cut view illustrating the holding device functioning as an end stop to limit a longitudinal movement of a gearing of the adjustment device
- FIG. 6 shows a view of a holding device of an adjustment device to fix a spindle to an associated, first guide rail, according to another embodiment
- FIG. 7 shows a partially cut view of the arrangement of FIG. 6 .
- FIG. 1 shows an embodiment of an adjustment device 1 adapted to longitudinally adjust the position of a vehicle seat 3 (which is only schematically indicated in FIG. 1 ) relative to a vehicle floor 4 (which also is only schematically indicated in FIG. 1 ).
- the position of the vehicle seat 3 may be adjusted along a longitudinal axis L such that a user may slidably adjust the seating position within the vehicle.
- the adjustment device 1 comprises two pairs of guide rails, each pair comprising a first guide rail 10 which is directly or indirectly connected to the vehicle floor 4 .
- a second, upper guide rail 11 is slidably arranged on the first guide rail 10 and may be moved relative to the first guide rail 10 along the longitudinal axis L along which both the first guide rail 10 and the second guide rail 11 extend.
- the vehicle seat 3 may be, directly or indirectly for example via a height adjustment mechanism, connected to the second, upper guide rail 11 such that by moving the second guide rail 11 relative to the first guide rail 10 the longitudinal position of the vehicle seat 3 may be adjusted.
- the adjustment device 1 in the shown embodiment, is constituted as an electric adjustment device for motorically adjusting the longitudinal position of the vehicle seat 3 .
- a spindle 12 via holding devices 15 , 16 , is connected to a base 100 of the first guide rail 10 such that the spindle 12 is held relative to the first guide rail 10 in a fixed, torque-proof manner.
- the spindle 12 is received between legs 101 , 102 of the generally U-shaped first guide rail 10 , the second guide rail 11 being slidably arranged in between the legs 101 , 102 of the first guide rail 10 using for example ball bearings or the like.
- the second, upper guide rail 11 comprises a base 110 and legs 111 , 112 and, via the legs 111 , 112 , is slidably guided within the first, lower guide rail 10 .
- a gearing 13 is fixed to the second guide rail 11 and is held in place with respect to the second guide rail 11 by means of a holding bracket 133 .
- the gearing 13 comprises a housing 130 which is fitted into the holding bracket 133 and encloses a spindle nut 131 being in threaded engagement with a screw thread of the spindle 12 such that, by rotating the spindle nut 131 , the gearing 13 —and together with the gearing 13 the second guide rail 11 —can be moved longitudinally along the spindle 12 in order to adjust the longitudinal position of the vehicle seat 3 .
- the gearing 13 furthermore comprises a drive worm 132 reaching through an opening 113 in the leg 111 of the upper guide rail 11 and carrying a worm thread which engages with an outer toothing of the spindle nut 131 and may be driven by means of a drive device 14 in the shape of an electric motor in order to rotate the spindle nut 131 within the housing 130 .
- the drive device 14 electrically drives the drive worm 132 , by which the spindle nut 131 is rotated about the spindle 12 .
- the gearing 13 is moved longitudinally along the spindle 12 such that the second guide rail 11 slides along the lower, first guide rail 10 and accordingly moves the vehicle seat 3 relative to the vehicle floor 4 .
- the spindle 12 To be able to transfer forces between the guide rails 10 , 11 for adjusting the longitudinal position of the vehicle seat and to securely hold the vehicle seat in place also in case of abnormal loads, for example in case of a crash, the spindle 12 must be securely fastened to the first, lower guide rail 10 . This is achieved by the holding devices 15 , 16 , which serve to fix the spindle 12 at its front end and at its back end to the base 100 of the first, lower guide rail 10 .
- the holding device 16 placed for example at the back end of the spindle 12 may be formed by a metal bracket and may be fixed to the base 100 of the first guide rail 10 for example by welding or by riveting
- the other holding device 15 placed for example at the front end of the spindle 12 may be formed as a plastics part. This is based on the finding that one of the holding devices may have a simplified shape and construction, substantial loads in particular in case of a crash being absorbed by the other holding device.
- one of the holding devices may have a simplified construction, the number of required parts may be reduced, thus helping to render the assembly process more efficient and to reduce the cycle time and the cost of the product.
- a holding device 15 of simplified construction may comprise a body fixed to the associated, first guide rail 10 , the body being made from a plastics material.
- the body for example may have a block shape, and the plastics material may comprise an elastomer.
- the holding device 15 serves to support the spindle 12 with respect to the first guide rail 10 in its vertical height position.
- a substantial amount of the longitudinal load forces, in particular in case of a crash, herein may be absorbed by the other holding device 16 , which may be formed by a metal bracket welded or riveted to the base 100 of the guide rail 10 .
- FIGS. 3 to 5 One embodiment of a holding device 15 is shown in FIGS. 3 to 5 .
- the holding device 15 has a block shape comprising a body 152 , the body 152 comprising a bottom face 150 resting on the base 100 of the first, lower guide rail 10 .
- the body 152 comprises an opening 153 through which the spindle 12 reaches.
- an insert element 154 is received within the body 152 and is overmolded with the plastics material of the body 152 .
- the insert element 154 hence is integrally connected to the body 152 , the insert element 154 having the shape of a cylindrical bushing aligned with the opening 153 of the body 152 and comprising a threading 155 which is in engagement with an outer threading of the spindle 12 .
- the spindle 12 is screwed into the insert element 154 with an end 122 such that the spindle 12 is fixedly connected to the insert element 154 and via the insert element 154 to the body 152 .
- the body 152 and the insert element 154 of the holding device 15 may both be made from plastics material.
- the body 152 and the insert element 154 may be made from different plastics material.
- the body 152 may be made from a plastics material comprising an elastomer.
- the insert element 154 in turn may be made from another plastics material not comprising an elastomer.
- the body 152 and the insert element 154 comprise different elastic characteristics.
- the body 152 may be made from a plastics material having a first elastic modulus
- the insert element 154 may be made from a plastics material having a second elastic modulus smaller than the first elastic modulus.
- the insert element 154 hence is made from a more rigid material, the material of the body 152 being softer than the material of the insert element 154 .
- a secure fastening of the spindle 12 to the holding device 15 via the insert element 154 can be achieved.
- the comparatively soft material of the body 152 an improved acoustic isolation of the spindle 12 and the guide rail 10 is achieved, facilitating the reduction of noise and vibrations.
- the holding device 15 is fixed to the base 100 of the associated first, lower guide rail 10 by means of a fixing element 103 having an end section 104 engaging with an opening 151 of the body 152 .
- the fixing element 103 protrudes from the base 100 of the guide rail 10 and is cut free from the base 100 in a tongue-like manner, as visible for example from FIG. 3 .
- the end section 104 herein extends along the longitudinal direction L and hence extends in parallel to the base 100 .
- the holding device 15 may be preassembled on the spindle 12 .
- the holding device 15 may be slid onto the end section 104 of the fixing element 103 such that the end section 104 engages with the opening 151 of the body 152 . In this way the holding device 15 is caught on the base 100 of the guide rail 10 by means of the fixing element 103 .
- the holding device 15 may serve as an end stop for the longitudinal adjustment movement of the guide rails 10 , 11 with respect to each other.
- the body 152 by means of a stop face 156 extending transversely to the longitudinal direction L, may provide an end stop for the movement of the gearing 13 attached to the second, upper guide rail 11 such that the gearing 13 may not be moved beyond the holding device 15 , as illustrated in FIG. 5 .
- the holding device 15 serves to support the spindle 12 with respect to the guide rail 10 at one end 122 of the spindle 12 .
- the holding device 16 (for example in the shape of a metal bracket) fixedly and in a torque-proof manner connects the spindle 12 to the guide rail 10 .
- the spindle 12 in this way is fixed to the holding device 16 such that via the holding device 16 a secure fixation of the spindle 12 to the first, lower guide rail 10 is established, in particular suitable to receive and absorb also loads in an abnormal load situation, in particular during a crash.
- the holding device 15 may comprise a body 152 being made from a plastics material, in particular an elastomer material, and having an opening 153 in the shape of a through hole through which the spindle 12 extends.
- the body 152 with a bottom face 150 is placed on the base 100 of the associated first, lower guide rail 10 and in this way is fixed to the first guide rail 10 , for example by riveting or in the manner described with reference to FIGS. 3 to 5 .
- the holding device 15 for example does not comprise an insert element, but the spindle 12 with an end 122 merely reaches through the opening 153 in the shape of a through hole. Hence, no longitudinal support of the spindle 12 within the opening 153 of the holding device 15 is provided.
- the spindle 12 comprises a nut element 120 screwed onto the spindle 12 .
- the nut element 120 abuts the body 152 of the holding device 15 and hence provides for a longitudinal support of the spindle 12 with respect to the holding device 15 .
- An elastic bearing 121 provides for an elastic end stop to limit the longitudinal movement of the guide rails 10 , 11 with respect to each other. In particular, in an end position the gearing 13 by means of the holding bracket 133 may come into abutment with the elastic bearing 121 .
- components of the longitudinal adjustment device may have an entirely different shape and construction.
- the gearing including the fixation of the gearing to its associated second guide rail, may have a different shape and construction than described herein.
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- Aviation & Aerospace Engineering (AREA)
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- Seats For Vehicles (AREA)
Abstract
An adjustment device for adjusting a longitudinal position of a vehicle seat comprises a first guide rail, a spindle extending along a longitudinal axis, a holding device connecting the spindle to the first guide rail, a second guide rail being linearly movable along the longitudinal axis with respect to the first guide rail, and a gearing fixed to the second guide rail, the gearing being in operative connection with the spindle to move the second guide rail relative to the first guide rail. The holding device herein comprises a body fixed to the first guide rail and made from a plastics material. In this way an adjustment device is provided which may reduce the complexity in particular of the fixation of the spindle to its associated, first guide rail.
Description
- The invention relates to an adjustment device for adjusting a longitudinal position of a vehicle seat.
- Within a vehicle the position of a vehicle seat can be adjusted by means of an adjustment device comprising guide rails, an upper guide rail being slidably arranged on a lower guide rail such that the vehicle seat connected to the upper guide rail can be adjusted in its longitudinal position within the vehicle by sliding the upper guide rail along the lower guide rail for example connected to a vehicle floor.
- An adjustment device of this kind may for example comprise a spindle fixed to a first of the guide rails and being in operative connection with a gearing fixed to a second of the guide rails. The gearing for example comprises a spindle nut driven by an electric drive device such that by rotating the spindle nut with respect to the spindle the gearing (and together with the gearing the second guide rail) can be moved longitudinally along the spindle.
- The guide rails of the adjustment device hence are held in position with respect to each other via the gearing being in operative connection with the spindle. The gearing herein is fixed to the second guide rail such that forces can be transferred from the gearing to the second guide rail and from the second guide rail to the vehicle seat in order to adjust the position of the vehicle seat.
- To be able to transfer forces between the guide rails in order to adjust the longitudinal seat position and also to securely hold the vehicle seat in place in case of abnormal loads, for example in case of a vehicle crash, the spindle needs to be reliably fastened to the first guide rail. Typically, this is achieved by means of holding devices in the shape of metal holding brackets, which for example may be welded or riveted to the first guide rail, for example to a base of the first guide rail such that via the holding devices a fixation of the spindle with respect to the first guide rail is established. This type of attachment typically requires multiple parts and adds to the assembly process, the cycle time and the cost of the product.
- It is an object of the instant invention to provide an adjustment device which may reduce the complexity in particular of the fixation of the spindle to its associated, first guide rail.
- According to one aspect, an adjustment device for adjusting a longitudinal position of a vehicle seat comprises a first guide rail, a spindle extending along a longitudinal axis, a holding device connecting the spindle to the first guide rail, a second guide rail being linearly movable along the longitudinal axis with respect to the first guide rail, and a gearing fixed to the second guide rail, the gearing being in operative connection with the spindle to move the second guide rail relative to the first guide rail. Herein, the holding device comprises a body fixed to the first guide rail and made from a plastics material.
- According to another aspect, the body may have a block shape.
- According to yet another aspect, the body may be made from a plastics material comprising an elastomer.
- In a particular embodiment, the holding device may comprise an insert element fixed to the body, the insert element for example being overmolded with the material of the body.
- In one embodiment, the body is made from a first plastics material, whereas the insert element is made from a second plastics material differing from the first plastics material. For example, the first plastics material may have a first elastic modulus, and the second plastics material may have a second elastic modulus, the first elastic modulus being smaller than the second elastic modulus.
- Various features and advantages of the present invention may be more readily understood with reference to the following detailed description and the embodiments shown in the drawings. Herein,
-
FIG. 1 shows a perspective view of an embodiment of an adjustment device adapted to longitudinally adjust the position of a vehicle seat; and -
FIG. 2 shows a schematic view of the functional operation of the adjustment device. -
FIG. 3 shows a view of a holding device of an adjustment device to fix a spindle to an associated, first guide rail, according to a first embodiment; -
FIG. 4 shows a partially cut view of the arrangement ofFIG. 3 ; -
FIG. 5 shows a partially cut view illustrating the holding device functioning as an end stop to limit a longitudinal movement of a gearing of the adjustment device; -
FIG. 6 shows a view of a holding device of an adjustment device to fix a spindle to an associated, first guide rail, according to another embodiment; and -
FIG. 7 shows a partially cut view of the arrangement ofFIG. 6 . - Subsequently, embodiments of the invention shall be described in detail with reference to the drawings. In the drawings, like reference numerals designate like structural elements.
- It is to be noted that the embodiments shall not be limiting for the invention, but merely represent illustrative examples.
-
FIG. 1 shows an embodiment of anadjustment device 1 adapted to longitudinally adjust the position of a vehicle seat 3 (which is only schematically indicated inFIG. 1 ) relative to a vehicle floor 4 (which also is only schematically indicated inFIG. 1 ). By means of theadjustment device 1 the position of thevehicle seat 3 may be adjusted along a longitudinal axis L such that a user may slidably adjust the seating position within the vehicle. - The
adjustment device 1, as generally known, comprises two pairs of guide rails, each pair comprising afirst guide rail 10 which is directly or indirectly connected to thevehicle floor 4. A second,upper guide rail 11 is slidably arranged on thefirst guide rail 10 and may be moved relative to thefirst guide rail 10 along the longitudinal axis L along which both thefirst guide rail 10 and thesecond guide rail 11 extend. Thevehicle seat 3 may be, directly or indirectly for example via a height adjustment mechanism, connected to the second,upper guide rail 11 such that by moving thesecond guide rail 11 relative to thefirst guide rail 10 the longitudinal position of thevehicle seat 3 may be adjusted. - The
adjustment device 1, in the shown embodiment, is constituted as an electric adjustment device for motorically adjusting the longitudinal position of thevehicle seat 3. For this, aspindle 12, viaholding devices base 100 of thefirst guide rail 10 such that thespindle 12 is held relative to thefirst guide rail 10 in a fixed, torque-proof manner. Thespindle 12 is received betweenlegs first guide rail 10, thesecond guide rail 11 being slidably arranged in between thelegs first guide rail 10 using for example ball bearings or the like. - The second,
upper guide rail 11 comprises abase 110 andlegs legs lower guide rail 10. - As schematically indicated in
FIG. 2 , agearing 13 is fixed to thesecond guide rail 11 and is held in place with respect to thesecond guide rail 11 by means of aholding bracket 133. Thegearing 13 comprises ahousing 130 which is fitted into theholding bracket 133 and encloses aspindle nut 131 being in threaded engagement with a screw thread of thespindle 12 such that, by rotating thespindle nut 131, the gearing 13—and together with thegearing 13 thesecond guide rail 11—can be moved longitudinally along thespindle 12 in order to adjust the longitudinal position of thevehicle seat 3. - The
gearing 13 furthermore comprises adrive worm 132 reaching through an opening 113 in theleg 111 of theupper guide rail 11 and carrying a worm thread which engages with an outer toothing of thespindle nut 131 and may be driven by means of adrive device 14 in the shape of an electric motor in order to rotate thespindle nut 131 within thehousing 130. - During operation, the
drive device 14 electrically drives thedrive worm 132, by which thespindle nut 131 is rotated about thespindle 12. Via the threaded engagement of an inner toothing of thespindle nut 131 with the outer toothing of thespindle 12, thegearing 13 is moved longitudinally along thespindle 12 such that thesecond guide rail 11 slides along the lower,first guide rail 10 and accordingly moves thevehicle seat 3 relative to thevehicle floor 4. - To be able to transfer forces between the
guide rails spindle 12 must be securely fastened to the first,lower guide rail 10. This is achieved by theholding devices spindle 12 at its front end and at its back end to thebase 100 of the first,lower guide rail 10. - Whereas the
holding device 16 placed for example at the back end of thespindle 12 may be formed by a metal bracket and may be fixed to thebase 100 of thefirst guide rail 10 for example by welding or by riveting, theother holding device 15 placed for example at the front end of thespindle 12 may be formed as a plastics part. This is based on the finding that one of the holding devices may have a simplified shape and construction, substantial loads in particular in case of a crash being absorbed by the other holding device. It hence may be sufficient to form one of the holding devices to serve as an isolator to support thespindle 12 in its height position along the vertical axis Z and to reduce vibrations and buzz, squeak and rattle (BSR) noise by acoustically isolating thespindle 12 from the associatedguide rail 10. Because one of the holding devices may have a simplified construction, the number of required parts may be reduced, thus helping to render the assembly process more efficient and to reduce the cycle time and the cost of the product. - In one aspect, a
holding device 15 of simplified construction may comprise a body fixed to the associated,first guide rail 10, the body being made from a plastics material. The body for example may have a block shape, and the plastics material may comprise an elastomer. By using a body of this kind being formed from a plastics material, in particular an elastomeric material, an acoustic isolation between the spindle and the associated first guide rail can be established. - Herein, the
holding device 15 serves to support thespindle 12 with respect to thefirst guide rail 10 in its vertical height position. A substantial amount of the longitudinal load forces, in particular in case of a crash, herein may be absorbed by theother holding device 16, which may be formed by a metal bracket welded or riveted to thebase 100 of theguide rail 10. - One embodiment of a
holding device 15 is shown inFIGS. 3 to 5 . In this embodiment, theholding device 15 has a block shape comprising abody 152, thebody 152 comprising abottom face 150 resting on thebase 100 of the first,lower guide rail 10. - In one aspect, the
body 152 comprises anopening 153 through which thespindle 12 reaches. - In another aspect, an
insert element 154 is received within thebody 152 and is overmolded with the plastics material of thebody 152. Theinsert element 154 hence is integrally connected to thebody 152, theinsert element 154 having the shape of a cylindrical bushing aligned with theopening 153 of thebody 152 and comprising athreading 155 which is in engagement with an outer threading of thespindle 12. Thespindle 12 is screwed into theinsert element 154 with anend 122 such that thespindle 12 is fixedly connected to theinsert element 154 and via theinsert element 154 to thebody 152. - In one aspect, the
body 152 and theinsert element 154 of the holdingdevice 15 may both be made from plastics material. Herein, in one embodiment, thebody 152 and theinsert element 154 may be made from different plastics material. For example, thebody 152 may be made from a plastics material comprising an elastomer. Theinsert element 154 in turn may be made from another plastics material not comprising an elastomer. - In one embodiment, the
body 152 and theinsert element 154 comprise different elastic characteristics. In particular, thebody 152 may be made from a plastics material having a first elastic modulus, whereas theinsert element 154 may be made from a plastics material having a second elastic modulus smaller than the first elastic modulus. Theinsert element 154 hence is made from a more rigid material, the material of thebody 152 being softer than the material of theinsert element 154. In this way, on the one hand a secure fastening of thespindle 12 to the holdingdevice 15 via theinsert element 154 can be achieved. On the other hand, by means of the comparatively soft material of thebody 152 an improved acoustic isolation of thespindle 12 and theguide rail 10 is achieved, facilitating the reduction of noise and vibrations. - In another aspect, the holding
device 15 is fixed to thebase 100 of the associated first,lower guide rail 10 by means of a fixingelement 103 having anend section 104 engaging with anopening 151 of thebody 152. The fixingelement 103 protrudes from thebase 100 of theguide rail 10 and is cut free from the base 100 in a tongue-like manner, as visible for example fromFIG. 3 . Theend section 104 herein extends along the longitudinal direction L and hence extends in parallel to thebase 100. - For the assembly, the holding
device 15 may be preassembled on thespindle 12. To fix the holdingdevice 15 on theguide rail 10, the holdingdevice 15 may be slid onto theend section 104 of the fixingelement 103 such that theend section 104 engages with theopening 151 of thebody 152. In this way the holdingdevice 15 is caught on thebase 100 of theguide rail 10 by means of the fixingelement 103. - Referring now to
FIG. 5 , in another aspect the holdingdevice 15 may serve as an end stop for the longitudinal adjustment movement of the guide rails 10, 11 with respect to each other. For this, thebody 152, by means of astop face 156 extending transversely to the longitudinal direction L, may provide an end stop for the movement of thegearing 13 attached to the second,upper guide rail 11 such that thegearing 13 may not be moved beyond the holdingdevice 15, as illustrated inFIG. 5 . - The holding
device 15 serves to support thespindle 12 with respect to theguide rail 10 at oneend 122 of thespindle 12. At the other hand, as schematically shown inFIG. 2 , the holding device 16 (for example in the shape of a metal bracket) fixedly and in a torque-proof manner connects thespindle 12 to theguide rail 10. Thespindle 12 in this way is fixed to the holdingdevice 16 such that via the holding device 16 a secure fixation of thespindle 12 to the first,lower guide rail 10 is established, in particular suitable to receive and absorb also loads in an abnormal load situation, in particular during a crash. - Now referring to
FIGS. 6 and 7 , in another embodiment the holdingdevice 15 may comprise abody 152 being made from a plastics material, in particular an elastomer material, and having anopening 153 in the shape of a through hole through which thespindle 12 extends. Thebody 152 with abottom face 150 is placed on thebase 100 of the associated first,lower guide rail 10 and in this way is fixed to thefirst guide rail 10, for example by riveting or in the manner described with reference toFIGS. 3 to 5 . - In the embodiment of
FIGS. 6 and 7 , the holdingdevice 15 for example does not comprise an insert element, but thespindle 12 with anend 122 merely reaches through theopening 153 in the shape of a through hole. Hence, no longitudinal support of thespindle 12 within theopening 153 of the holdingdevice 15 is provided. - In order to support the
spindle 12 longitudinally on the holdingdevice 15, according to one aspect thespindle 12 comprises anut element 120 screwed onto thespindle 12. Thenut element 120 abuts thebody 152 of the holdingdevice 15 and hence provides for a longitudinal support of thespindle 12 with respect to the holdingdevice 15. Anelastic bearing 121 provides for an elastic end stop to limit the longitudinal movement of the guide rails 10, 11 with respect to each other. In particular, in an end position thegearing 13 by means of the holdingbracket 133 may come into abutment with theelastic bearing 121. - The embodiments described above shall not limit the invention, but merely serve for illustrative purposes.
- In particular, components of the longitudinal adjustment device may have an entirely different shape and construction.
- For example, the gearing, including the fixation of the gearing to its associated second guide rail, may have a different shape and construction than described herein.
-
- 1 Longitudinal adjustment device
- 10, 11 Guide rail
- 100, 110 Base
- 101, 102, 111, 112 Leg
- 103 Fixing element
- 104 End
- 113 Opening
- 12 Spindle
- 120 Nut element
- 121 Spring bearing
- 122 End
- 13 Gearing
- 130 Housing
- 131 Spindle nut
- 132 Drive worm
- 133 Holding bracket
- 14 Drive device
- 15, 16 Holding device
- 150 Bottom face
- 151 Opening
- 152 Body
- 153 Through hole
- 154 Insert element
- 155 Threading
- 156 Stop face
- 3 Vehicle seat
- 4 Vehicle floor
- L Longitudinal axis
- Z Vertical direction
Claims (15)
1. An adjustment device for adjusting a longitudinal position of a vehicle seat, the adjustment device comprising:
a first guide rail;
a spindle extending along a longitudinal axis;
a holding device connecting the spindle to the first guide rail;
a second guide rail being linearly movable along the longitudinal axis with respect to the first guide rail; and
a gearing fixed to the second guide rail, the gearing being in operative connection with the spindle to move the second guide rail relative to the first guide rail;
wherein the holding device comprises:
a body fixed to the first guide rail and made from a plastics material; and
an insert element embedded into the body, the insert element defining a bore comprising a threading wherein the spindle engages with the threading and wherein the insert element is made from a material different than the plastics material of the body, the plastics material of the body having a first elastic modulus and the material of the insert element having a second elastic modulus, the first elastic modulus being smaller than the second elastic modulus.
2. The adjustment device of claim 1 , wherein the body has a block shape.
3. The adjustment device of claim 1 , wherein the body is made from a plastics material comprising an elastomer.
4. The adjustment device of claim 1 , wherein the body comprises an opening, the spindle engaging with said opening.
5. (canceled)
6. The adjustment device of claim 1 , wherein the insert element is overmolded with the material of the body.
7. The adjustment device of claim 1 , wherein the body is made from a first plastics material and the insert element is made from a second plastics material differing from the first plastics material.
8. (canceled)
9. (canceled)
10. The adjustment device of claim 1 , wherein the spindle comprises a nut element abutting the holding device for longitudinally supporting the spindle with respect to the holding device.
11. The adjustment device of claim 1 , wherein the first guide rail comprises a base and at least one leg extending from the base, wherein the holding device is fixed to the base.
12. The adjustment device of claim 1 , wherein the first guide rail comprises a fixing element protruding from the base and engaging with the body of the holding device.
13. The adjustment device of claim 12 , wherein the fixing element comprises an end section extending along the longitudinal direction and engaging with the body.
14. The adjustment device of claim 1 , wherein the holding device connects the spindle to the first guide rail at a first end of the spindle and another, second holding device connects the spindle to the first guide rail at a second end of the spindle.
15. An adjustment device for adjusting a longitudinal position of a vehicle seat, the adjustment device comprising:
a first guide rail;
a spindle extending along a longitudinal axis;
a first holding device and a second holding device connecting the spindle to the first guide rail;
a second guide rail being linearly movable along the longitudinal axis with respect to the first guide rail; and
a gearing fixed to the second guide rail, the gearing being in operative connection with the spindle to move the second guide rail relative to the first guide rail;
wherein the first holding device comprises a body fixed to the first guide rail and made from a plastics material, the first holding device being formed to support the spindle with respect to the first guide rail in its vertical height position and to acoustically isolate the spindle from the first guide rail,
wherein the second holding device is formed by a metal bracket fixed to the first guide rail, the second holding device being formed to absorb loads acting onto the spindle in case of a crash.
Priority Applications (1)
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US15/612,402 US10144310B1 (en) | 2017-06-02 | 2017-06-02 | Adjustment device for adjusting a longitudinal position of a vehicle seat |
Applications Claiming Priority (1)
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US15/612,402 US10144310B1 (en) | 2017-06-02 | 2017-06-02 | Adjustment device for adjusting a longitudinal position of a vehicle seat |
Publications (2)
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US10144310B1 US10144310B1 (en) | 2018-12-04 |
US20180345825A1 true US20180345825A1 (en) | 2018-12-06 |
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US15/612,402 Active US10144310B1 (en) | 2017-06-02 | 2017-06-02 | Adjustment device for adjusting a longitudinal position of a vehicle seat |
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Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3068928B1 (en) * | 2017-07-17 | 2019-08-16 | Faurecia Sieges D'automobile | SLIDE FOR VEHICLE SEAT AND VEHICLE SEAT COMPRISING SUCH A SLIDER |
DE102017218492B4 (en) * | 2017-08-08 | 2022-12-22 | Keiper Seating Mechanisms Co., Ltd. | FOREIGN ADJUSTER AND VEHICLE SEAT |
FR3071784B1 (en) * | 2017-09-29 | 2019-10-18 | Faurecia Sieges D'automobile | SCREW ADJUSTMENT MECHANISM, SLIDE COMPRISING SUCH AN ADJUSTING MECHANISM AND SEAT COMPRISING SUCH A SLIDER. |
DE102018207170B4 (en) * | 2018-05-08 | 2020-12-17 | Magna Seating (Germany) Gmbh | Contacting system for electrically connecting an on-board network of a motor vehicle to a removable vehicle seat or a seating system |
JP7068139B2 (en) * | 2018-10-29 | 2022-05-16 | 株式会社Tf-Metal | Vehicle seat slide device |
JP7107823B2 (en) * | 2018-12-04 | 2022-07-27 | 株式会社Tf-Metal | Electric seat slide device |
US10960786B2 (en) * | 2019-02-19 | 2021-03-30 | Kawasaki Jukogyo Kabushiki Kaisha | Seat moving structure for utility vehicle |
US11104249B2 (en) * | 2019-05-20 | 2021-08-31 | Fca Us Llc | Seat and a release and slide assembly for a seat |
DE102019122928B3 (en) * | 2019-06-14 | 2020-10-15 | Adient Engineering and IP GmbH | LENGTH ADJUSTER AND VEHICLE SEAT |
US11034264B2 (en) | 2019-08-05 | 2021-06-15 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Seat travel limiter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102004001624B3 (en) * | 2004-01-09 | 2005-09-01 | Keiper Gmbh & Co. Kg | Drive a seat adjustment for a motor vehicle |
US7407214B2 (en) * | 2005-01-18 | 2008-08-05 | Dura Global Technologies, Inc. | Seat adjusting assembly including lead screw and mounting attachment |
JP4428282B2 (en) * | 2005-04-22 | 2010-03-10 | アイシン精機株式会社 | Power seat slide device for vehicle |
WO2011041911A1 (en) * | 2009-10-08 | 2011-04-14 | Magna Seating Inc. | Sliding easy entry release mechanism with rest in full rear position |
JP5691542B2 (en) * | 2011-01-18 | 2015-04-01 | トヨタ紡織株式会社 | Vehicle seat slide device |
JP6282560B2 (en) * | 2014-08-28 | 2018-02-21 | トヨタ紡織株式会社 | Vehicle seat slide rail |
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2017
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