DE3129525A1 - "VEHICLE SEAT WITH ADJUSTABLE SIDE PADS" - Google Patents

Description

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July 23, 1981 L-Hg./kr

lear Siegler, Inc.
Livonia, Michigan, USA

"Vehicle seat with adjustable side cushions ¹ »

The invention relates to vehicle seats, and more particularly to those
Vehicle seats in which the shape of the vehicle seat can be changed.

The driver or other users of motor vehicles experience the Various driving stresses during a typical journey. Sin such stress on the body can also be the burden

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of the spine, which often causes discomfort, which in extreme situations can cause damage.

The users of vehicles can be pushed in a lateral direction relative to their seat, for example during a vehicle collision or during a sharp turn. The users can against other users of the vehicle or the Be thrown inside the wall of the vehicle. If such forces act on the driver of the vehicle, can he will lose control of the vehicle.

When the backrest part and / or the seat part of the vehicle seat each provided with two side cushions or upholstery parts is the lateral movement of the user of the driving

It is more restricted to protect the user of the seat.

; Such a backrest part of a vehicle seat is described in US Pat. No. 3,627,379.

The protective property of vehicle seats, the side upholstery is largely determined by how closely the side cushioning parts fit around the side of the user of the vehicle seat are arranged around. It is desirable that the distance between such cushion parts is slightly greater than the width of the Is the user of the seat. While such a close concern is desirable for safety reasons, there is some degree of concern

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Looseness is also important for the convenience of the user. Such looseness also gives the driver the freedom of movement required to drive the vehicle.

A possible, but impractical solution, the one on the side Providing support with convenience is to every vehicle seat convenient to make fit for each user. Such a site would be very costly and would never be available to others fit. In addition, depending on the amount of clothing worn by the user, the seat could be temporarily unsuitable for the user for whom the seat was designed. The optimal difference in the space between the upholstery changes depending on the effective width of the user.

As a result, it is desirable that the effective distance between such padding is changeable to provide the necessary support and comfort for the to create special users of the vehicle seat. A well-known The method is to adjust the lateral position of the two upholstery parts by turning the handwheel di® forces both assigned polar parts to be relative to Ite @ a gtageor & neten Eückenlehnentell to "move. In this © way the distance between the upholstery and The upholstery on the opposite side of the back

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backrest part is arranged, changed. The other upholstery part can be changed individually in the same way using its own handwheel. One such method of changing the distance between two corresponding upholstery parts is not only complicated, but also time consuming, as each of the upholstery parts must be adjusted individually in order to achieve the exact distance between them. Then is the exact distance reached, it is also possible that one of the upholstery parts at a larger or smaller angle with respect to the associated backrest or seat part stands than the other upholstered part, which is an inconvenience for the user of the seat results.

Vehicle seats of any type to which the invention relates, are described in U.S. Patents 4,169,899, 3,727,980 and 3,623,768.

One purpose of the invention is to provide an improved vehicle seat to provide which comprises a backrest part and a seat part, wherein two movable side cushion parts are arranged on the opposite sides of at least one of the parts and protrude and with adjustment means for the selective and simultaneous movement of the upholstery parts in a controlled manner between a first lateral one

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Support position and a second lateral support position provided are.

A second purpose of the invention "is to provide a vehicle seat to create, which comprises a backrest part and a seat part ■, wherein two movable side cushion parts on opposite sides Sides of at least one of the parts are arranged protruding and with adjustment means for optional uad simultaneous movement of the upholstery parts in a controlled manner and ways are provided between a first lateral support position and a second lateral support position in such a way that that the adjustment devices the cushion part both in the hold the first as well as in the second lateral support position.

Another purpose of the invention is to provide a vehicle seat to create with a backrest part and a seat part, with two lateral upholstery parts® on opposite sides Sides of at least one of the parts are arranged and protrude therefrom and wherein the cushion parts are simultaneously together and individually by a single manual assembly machaism can be moved. A further purpose of the invention is to provide a vehicle seat with a back ! © toeattil tand a sitting part raid at least two lateral ones To create upholstery parts, y © & each of which has a 'rigid bearing mechanism includes, on the associated Fahrseugsitzteil

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is articulated, with an adjustment mechanism being provided, around the two corresponding support mechanisms simultaneously between a first lateral support position and a second to move the lateral support position and thereby change the distance between the two side upholstery parts.

To achieve the aforementioned purposes and other parts of the gate This invention includes a preferred embodiment of the Invention a backrest part, a seat part, two movable side upholstery parts on opposite sides are arranged protruding from at least one of the parts and adjusting devices for selective and simultaneous Moving the cushion parts in a controlled manner between a first lateral support position and a second lateral support position. The adjustment device is suitable for adjusting the upholstery parts in the first and second lateral To hold support position.

The setting devices can preferably be operated manually, around the upholstery parts between the first and the second lateral To be able to move support position.

The purposes, features and advantages of the invention are as follows explained in more detail with reference to the drawing. In this drawing show:

1 6th - 7 - Kb - 8th - Pig. a side view of one according to the invention 2 engineered vehicle seat; Pig. 3 a front view of the vehicle seat; Pig. one of the pig. 1 corresponding view of the Seat where the lower and the upper Part of the side of the vehicle seat A. is shown broken; Pig. one shown partly broken Front view of the seat part of the vehicle seat, which one of the ver bound upholstery parts in two of its since lichen support positions in dash-dotted lines 5 Lines shows; Pig. a plan view of the seat part, from the the setting devices for changing the distance between the two below upholstered parts connected to each other is lich; Pig. one shown partly broken Top view of the backrest part of the

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Upholstered seat, the interconnected upholstered parts in one first lateral support position in solid lines and in a second lateral support position illustrated with dash-dotted lines;

Pig. 7 one of the pig. 3 corresponding view of a second embodiment of the Pahrzeugsitzes invention;

Pig. 8 one of the pig. 4 corresponding view from the two lateral support positions one of the interconnected upholstery parts can be seen in dash-dotted lines;

Pig. 9 is a partial top plan view of part of the in Pig. 8 adjustment mechanism shown ;

Pig. 10 is a view from below of the backrest part of the vehicle seat of the second embodiment, the two lateral support positions of the lower

represents other connected upholstery parts in dash-dotted lines, and

11 shows a broken rear view sees the backrest part of the seat according to the second Ausftihrungsbeispiel and the interconnected upholstery parts.

In Fig. 1 and 2 is a first Alisführung example of one according to the invention Vehicle seat shown, which is designated as a whole with 20 and a seat part 22, one connected to this Backrest part 24 and a head part 25 which is attached to the upper end of the backrest part 24. Two Movable lateral cushion parts comprise a right cushion part 26 and a left cushion part 28, which face away from each other Sides of the seat part 22 are arranged and the upper region of the seat part 22 protrude to the lower part of the User of the vehicle seat 20 between see sideways support.

A second pair of movable side upholstery parts, the one

30th
right upholstery part and a left upholstery part 32 comprise, is on the opposite sides of the backrest part

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arranged and protrudes beyond the door part of the vehicle seat 20, to laterally support the upper body of the user of the vehicle seat 20 between them.

The side padding parts 26, 28, 30 and 32 are suitable for considerable Absorb forces that can occur in the transverse direction of the backrest part 24 and the seat part 22, if For example, the person using the seat drives through a curve at an increased speed and either against the right upholstery parts 26 and 30 or the left upholstery parts and 32 is pressed.

Referring to Figs. 3 and 4- it can be seen that the Seat part 22 comprises a frame 34 to which the right and left upholstery parts 26 and 28 are hinged with their inner ends are. More specifically, the cushion members 26 and 28 comprise rigid ones Wings 36, which are in the form of metal or plastic wings or Plates are formed which are pivotably connected to the frame 34 at their lower ends by means of a pivot pin 38 are. The lower ends of the wings are rotatable with sleeves 39 Receiving the mutually facing ends of the pivot pins 38 is provided. The pivot pins 38 are in turn over Support arms 40 carried by frame 34.

Each of the wings 36 is provided with a spring unit (not shown)

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represents) embedded in a body made of plastic foam and a decorative fabric is on the outer surface of the Body applied to complete the construction of each of the right and left bolsters 26 and 28.

In Fig. 5 is a designated as a whole with 42 single-gate mechanism shown, which is used to move both the right and left cushion parts 26 and 28 alternately either against or away from each other, creating a smaller or larger seating area between them is created. The adjustment mechanism 42 selectively moves and at the same time the right and left cushion parts 26 and 28 in a controlled manner between a first lateral one Support position and a second lateral support position, such as FIg. 4 shows. The adjustment mechanism 42 also holds and supports the right and left cushion portions 26 and 28 in any desired manner lateral support position between the aforementioned positions.

More precisely: the support mechanism 42 is pivotable with two wings 36 connected to the wings 36 around their associated Pivot pins 38 to pivot. The adjustment mechanism 42 comprises a single hand wheel 44 which is fixed to a a drive rod 46 is connected, which consists of the

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Seat part 42 extends out. The drive rod 46 is made up of a plastic or rubber support bushing 48, which is best Pig. 4 can be seen, attached to the frame 34. The lower end region 47 of the support bushing 48 is fastened to the frame 34 j and a hollow cylindrical upper portion 49 of the bushing 48 supports the drive rod 46 above the frame 34.

At the end of the drive rod 46 opposite the handwheel 44 there is provided a threaded portion 50 which is screwed into a movable nut 52 which extends upwardly
the pin 54 carries. The pin 54 engages in an opening 55 which extends through an arm 56 of a rotating device 58. Movement of the nut 52 axially along the drive rod 46 causes the rotating device to rotate about an upwardly directed pivot pin 60 which is fixedly connected to the frame 34 and which extends through an opening 61 which is made in the middle of the rotating device 58. The rotating device 58 fits with play on the rotating pin 60 in order to enable the rotating device 58 to rotate in response to the axial movement of the nut 52. The rotating device 58 rotates through a small angle, as shown in FIG. 5, when the nut 52 moves on the drive rod 46 in response to the rotation given to the rod 46 by the hand wheel 44.

The rotating device further comprises a plate 62 which

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is integrally formed with the arm 56 and has two further arms 64 and 65, which are integral with the plate 62 on opposite sides Pages are formed. Each of the arms 64 and 65 includes two spaced apart flanges 66 and 68, which are best seen in FIG. Beveled end portions 70 of rigid ones extend in opposite directions extending push rods 72 are inserted into the corresponding flanges 66 and 68 and fixed. The end regions 70 are through Pivot pins 74 are pivotally secured between flanges 66 and 68. The push rods 72 are also through pivot pins 78 connected to the wings 36 at their beveled end regions 76. The pivot pins 78 are through tabs 80 of carried by the wings 36.

When the rotating device 58 is clockwise, as shown in FIG. 5, is rotated, the wings 36 are pulled against each other by the push rods 72. If the rotating device against the Clockwise, push rods 72 push the wings away from each other.

According to Fig. 6 of the drawing, the backrest part 24 comprises an inner frame 81, the two approximately identical right and left Cage constructions 82, which are arranged on opposite sides of the backrest part 24. Pivot pins 84

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are of the associated cage structures 82 on their opposite Ends worn. On these pivot pins 84 are two wings 86 of the cushion parts 30 and 32 with their inner ends pivotally arranged. The outer ends of the wings can be connected to spring units extending along the backrest extending wires 87 which are embedded in the cushion portions 30 and 32, as in the cushion portions 26 and 23.

The upholstery parts 30 and 32 of the backrest part 34 are optional simultaneously adjustable against each other and away from each other by an adjusting mechanism 88 in a controlled manner. Of the Adjustment mechanism 88 is suitable for adjusting the upholstery parts 30 and 32 between a first lateral support position, which is shown in FIG. 6 is shown in solid lines, and to move a second lateral support position, which is shown in dash-dotted lines Lines is shown. The adjustment mechanism 88 also holds the cushion members 30 and 32 in both the first and second Support position and in any desired support position in between.

The adjustment mechanism includes a hand wheel 90 which is coupled to a threaded drive shaft 92, which in turn with a The substantially identical second threaded drive shaft 94 is coupled by a flexible drive cable 96. That flexible drive cable 96 is attached to the two threaded drive shafts 92 and 94 connected by screws shown in the drawing

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are not shown.

The first and second threaded drive shaft 92 and 94 are supported by two spaced-apart nylon rollers 98 rotatable in the respective cage construction 82nd The two threaded drive shafts 92 and 94 extend on the support bushings through a first and a second support rail 100 and 102 of the corresponding cage construction. The threaded drive shafts 92 and 94, which are provided with oppositely rising threads, extend in opposite directions, which will be explained in more detail later.

In the cage structures 82, drive nuts 104 are applied to the threaded drive shafts 92 and 94. Each of the Äntriebsmuttern comprises a 106 to _e extending therethrough forwardly extending portion through elongated slots 108 formed in the side wall portions 110 of the first support rail 100 and serve to guide the areas. The drive nuts 104 are threaded in such a way that they move along the threaded drive shafts 92 and 94 either away from one another or towards one another as a function of the turning pitch of the handwheel 90.

rigid links 112 are fixed with the appropriate drive nuts 104 connected and with their opposites

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Ends pivotably hinged to eyes 114 that are firmly attached to the corresponding wings are connected. The drive nuts move along the threaded drive shafts 92 and 94 either toward each other or away from each other, to the wings by the links 112 connected to them either against each other or to move apart.

In Fig. 7 of the drawing, a second embodiment of a vehicle seat according to the invention is shown, which as The whole is designated by 120. Like the vehicle seat 20 of the first embodiment, the vehicle seat 120 also includes a seat part 122 and a backrest part 124 connected to it, and a headrest 125 which is attached to the upper end of the j backrest part 124 is attached. As with the first exit

The exemplary embodiment also includes the vehicle seat 120 seat cushion parts 128 (one of which is only shown), which are attached to opposite Sides of the seat part 122 are articulated. The seat 120 also includes one as in the first embodiment right and left backrest upholstery parts 130 and 132, which are articulated with their inner ends to the backrest part 124.

The seat portion 122 comprises a frame 134, attached to the wing, of only one of which is represented by pivot pins 138 of

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which also only one is shown is hinged. The frame 134 includes two support cages 140, each of which has its associated Pivot pins 138 on an outer support arm 141 carries.

Each of the wings 136 is fixed to one not shown Spring unit of the associated cushion part 130 or 132 connected. Each of the wings 136 is together with the associated one The spring unit is embedded in a body made of plastic foam, so that the upholstery part is connected to the associated wing 136 emotional.

A drive device 142 is provided for the optional simultaneous movement of the seat cushion parts 128 between their numerous side support positions including the side support positions shown in Fig. 8 for the left upholstery 128 are shown in broken lines. The adjustment mechanism 142 includes a hand wheel, which is of a User of the seat next to the left upholstery part 128 can be taken. The hand wheel 144 has a lead screw or a threaded rod 146 connected. The threaded rod 146 is through a connecting tube 151 to a second drive tube 150 coupled in order to transmit the rotational movement of the first threaded rod 146 to the threaded rod 150. The threaded rods 146 and 150 are from the first support arm 141 and a related

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14th

-Ver related second support arm 147 of the support cage HO connected. The threaded rods 146 and 150 are rotatably mounted and extend through the first and second support arms 141 and 147 through nylon bushings 149 carried by them. Screws not shown in the drawing fasten the connecting pipe to the two threaded rods 146 and 150.

Drive nuts 152, of which in Pig. 9 only one for the left Folster part 128 is shown, are applied to the threaded areas of the first and second threaded rods 146 and 150. Each of the drive nuts 152 includes an upwardly extending one End portion 154 extending upwardly through a slot 153 formed through an upper wall portion 155 of the second support arm 147 is formed therethrough. When the threaded rods 146 and 150 are rotated, the drive nuts 152 are guided in their associated slot 153.

Two rigid arm portions 156 are fixed to the drive nuts connected to move with these. The ends 157 of the arm parts 156 are via mounting brackets 159 with the associated Wings 136 connected to thereby connect the drive nuts 152 and the wings 136 together au. The wings 136 pivot around the pivot pins 138 when the drive nuts 152 in an axial direction along the first and the second

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move th threaded rod 146 and 150.

As shown in FIGS. 10 and 11, the frame 181 comprises the backrest portion 124 two spaced apart cage structures 182. The cage structures have two in one piece with these formed and spaced apart mounting flanges 183 to which the wings of the upholstery parts 130 and 132 are pivotably arranged, as detailed later will be explained.

The wings, which encompass skeletal frames, are solid with theirs associated spring units, of which a part is shown at 187 in FIGS. 10 and 11, and the wings 186 are embedded together with their associated spring units in a body made of foam plastic around the upholstery parts 130 and 132 so that they move with the associated wings 186.

The wings 186 are from a first lateral support position, as shown in solid lines in Fig. 10, moved to other lateral support positions, two of which in are shown in broken lines in FIG. The movement is carried out by an adjustment mechanism 188, which is a manually adjustable handwheel 190 includes. The hand wheel 190 is connected to a drive shaft 92 provided with an external thread

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den, which in turn is connected by a flexible drive cable 196 to a second drive shaft 194, the ends of the drive cable to the first and second drive shaft 192 by screws not shown in the drawing and 194 are connected. The first and second drive shafts 192 and 194 are rotatable by two bushings 198 in the respective ones Cage structures 182 stored. The bushings 198 support the first and second drive shafts 192 and 194 in FIG inner and outer rails 200 and 202 of cage structure 182 through which the two drive shafts extend

Drive nuts 204 are disposed on threaded drive shafts 192 and 194. The wings 186 are with the drive nuts for pivoting the wings 186 connected to one another by pins, which are disposed on drive nuts 204 and which extend through elongated slots 208 which are formed in upper and lower frame parts 189 and 191 of the wings. Connect the intermediate frame parts 193 of the wings 186 the upper and lower frame members 189 and 191 together to achieve a solid structure.

The upper and lower frame parts 189 and 191 of the wings 186 are pivotable with the mounting flange 183 of the corresponding cage structure 182 by a pivot pin 209, which through the upper and lower frame parts 189 and 191 of the

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Wing 186 extends through it. The elongated slots 208 allow the drive nut to move in the axial direction either towards or away from each other on the first and of the second threaded drive shaft 192 and 194, thereby pivoting the vanes 186 about pivot pins associated therewith and thereby to move from one lateral support position to another lateral support position. When the handwheel 190 is rotated the first and second screw drive shafts 192 and 194 will rotate in the same direction. However will the threads of the second screw drive shaft Rotate in the opposite direction as the ends of the first and second threaded drive shafts 192 and 194 pass through the flexible drive cable 196 are interconnected.

Although two exemplary embodiments including a preferred embodiment of the invention are shown and detailed have been described, numerous alternative designs and configurations for practicing the invention are possible.

Claims (1)

Claims Kraftfahrseugsitz with a backrest part and one Seat; part and two movable side upholstery parts, the are arranged on opposite sides, at least one of these parts protruding therefrom, characterized by an adjustment mechanism (42; 142) for the selective and simultaneous movement of the upholstery parts (26, 28, 30, 32; 128, 130, 132) in a controlled manner between a first lateral support position and a second lateral support position, wherein the adjustment mechanism holds the cushion parts in the first and second lateral support positions. Vehicle seat according to Claim 1 _S, characterized in that the adjusting mechanism (42) manu © !! is operable to move the cushion parts between the first and the second lateral support position. ^ f ι _ yr - 3. The vehicle seat according to claim 2, characterized in that each of the cushion parts (26, 28, 30, 32; 128, 130, 132) inner and outer parts, the cushion parts on opposite sides of one of the Parts (22 or 24; 122 or 124) are arranged with their inner parts. 4. Vehicle seat according to claim 3, characterized in that that said one of the parts comprises a frame (34) and that each of said cushion parts (22, 24) is articulated with its inner part (36) on the frame (34). 5. The vehicle seat according to claim 4, characterized in that that it comprises two hinge assemblies and that each of the cushion parts (26, 28, 30, 32) has one rigid Support mechanism includes and each hinge device pivotally connects the associated support mechanism to the frame (34). 6. The vehicle seat according to claim 5, characterized in that each hinge device comprises a pivot element (38) which is carried by the frame (34) and connects the associated support mechanism (36) and a pivoting of the support mechanism (36) relative to the Frame (34) allows. ■ 7. vehicle seat according to claim 6, characterized ! shows that the adjusting device (42) min- j at least one 'drive rod (46) which is rotatable from Frame (34) is supported and further comprises a hand wheel (44) which is fixed to the drive rod (46) for manual Rotating the rod is connected. 8. The vehicle seat according to claim 7, characterized in that the adjusting mechanism (42) has a a second rotatable drive shaft (94) rotatably supported by the frame (34) and that the drive mechanism (42) furthermore a rotary movement which connects the first and second drive shafts (92, 94) to one another Element for transmitting a mechanical force from the first drive shaft (92) to said second drive shaft (94) includes. 9 »vehicle seat according to claim 8, characterized in that the one that transmits a rotary movement Element © is in flexible drive cable (96). 10. The vehicle seat according to claim 8, characterized in that that the adjustment mechanism comprises an actuator associated with each of the drive shafts and connected to each of the support mechanisms (36) for simultaneously moving the support mechanisms relative to the frame is when the drive shafts are rotated. 11. The vehicle seat according to claim 10, characterized in that that the first drive shaft (92) comprises a threaded part and that the actuating device at least a drive element screwed onto the drive shaft for movement along the axis of the screw whose circulation includes. 12. The vehicle seat according to claim 11, characterized in that the second drive shaft (94) has a second threaded portion and that the actuating device comprises a second drive element (104) which on the second threaded portion is used to move along the axis of rotation of the second threaded portion when the second threaded portion is put into circulation around the associated support mechanism (86) and thus the corresponding upholstery part (30 or 32) to move. j 13. The vehicle seat according to claim 7, characterized in that that the adjustment mechanism (42) comprises a handlebar assembly (50, 72) which is operative with the Drive shaft (46) and each of the support mechanisms (36) for I. simultaneous movement of the support mechanisms is connected when the drive shaft (46) is rotated. 14o vehicle seat according to claim 13, characterized by a device (58) converting the movement, the one with the drive shaft (46) and the link assembly for converting the rotational movement of the drive shaft into a linear one Movement of the handlebar assembly. 15. The vehicle seat according to claim 14, characterized in that that the movement converting device comprises a coupling element (52) which on the Drive shaft (46) is screwed for moving along the axis of rotation of the drive shaft. 16 * vehicle seat according to claim 15, characterized g e k β n η. ζ indicates that the one that transforms a movement Device comprises a second coupling element rotatably disposed on the frame and with the first coupling element is coupled to turn around its axis of rotation " run, wherein the coupling element moves along the axis of rotation of the drive shaft. 17. The vehicle seat according to claim 16, characterized in that that the handlebar assembly comprises at least two handlebars (72; 112; 156), and each of the handlebars is pivotable with opposite ends of the second coupling element is connected and the handlebars in opposite directions from this to the associated Support mechanisms (36, 88, 136) extend towards. 18. Vehicle seat for a motor vehicle with a backrest part, a seat part, a set of side upholstery parts that are movable on opposite sides and protruding therefrom on each of the parts and with two independent adjustment mechanisms, each of which is suitable for the associated set of upholstery parts in a first lateral support position hold and move the set of upholstery parts to a second lateral support position, each of the adjustment mechanisms optionally and at the same time the assigned set of upholstery parts together in a second lateral Support division moves, each of the adjustment mechanisms is suitable for holding the associated set of upholstery parts in said second lateral support position.