CH626018A5 - - Google Patents

Description

The present invention relates to a seat for vehicles in general, preferably for passenger cars, passenger cars, industrial vehicles, tractors, trains, etc.

As is known, in the manufacture of motor vehicle seats, an attempt is made to obtain the possibility of various adjustments of the position of the seat itself, to ensure better comfort, and to obtain these adjustments with mechanisms of safe operation and relatively simple construction and therefore cheap. Furthermore, also for the realization of the seat as a whole, we try to obtain maximum simplicity of construction and rapid assembly.

Seats for vehicles of the known type do not satisfy the above requirements in a completely satisfactory manner. In particular, the final construction phase of the seat is quite long, since the seat padding, generally made of rubber, expanded plastic material (foamed, etc.) and upholstery, is formed directly on the metal structure of the seat itself, only when the finished seat is made.

The object of the present invention is to provide a vehicle seat which meets the requirements mentioned above: i.e. it is relatively simple and quick and therefore economical to manufacture and assemble, and also has an excellent degree of comfort and adaptability to different positions, through different adjustment devices made in a simple and reliable way.

According to the present invention, a vehicle seat is provided, comprising a support structure for a seat part and a back part and at least a part of padding in said seat and / or back parts, characterized in that it comprises parts of distinct and separable padding in said seat and / or backrest parts, and independent adjustment devices of said distinct bottling parts.

For a better understanding of the present invention, some embodiments thereof will now be described, purely by way of non-limiting example, with reference to the attached drawings, in which:

fig. 1 is a front perspective view of an embodiment of the seat of the present invention;

fig. 2 is a partial front perspective view of the seat of fig. 1;

figs. 3 and 4 are respectively lateral and rear views of the seat of fig. 1;

fig. 5 is a top view, sectioned with a plane V-V, of the seat of fig. 4;

figs. 6, 7 and 8 are partial and exemplary side, front and top views respectively of support structures for the seat of fig. 1, according to the present invention, with the relative adjustment devices;

fig. 9 is an exemplary side view of a seat adjustment device of the present invention;

fig. 10 is a sectioned view with an X-X trace plane, of the adjustment device of fig. 9;

fig. 11 is a sectioned top view of another seat adjustment device of the present invention; and fig. 12 is a sectioned side view of an adjustment knob with the relative seat device of the present invention.

With reference to figs. 1 to 5, the seat according to the present invention has a support structure 10, for a part with seat Ile a part with backrest 12, comprising parts of load-bearing structure, made of sheet metal, made by cold pressing, which determine areas that are well defined for the assembly of the padding parts, which include parts in expanded plastic material with convenient external appearance in imitation leather, velvet, etc., made with known methods, on rigid frames, for example in rigid resin.

According to a main feature of the seat of the present invention, the support structure 10, and the different foam padding parts with the relative rigid frames, are made separately, completely, so that these padding parts are fixed to the support, through rigid frames, simply and quickly, only in the final assembly phase of the seat.

The support structure 10 comprises a frame 24 for the seat part, with a square or rectangular shape, and formed by four perimeter profiles (two lateral 21, one front 20 and one rear 19). Internally to this frame 24 are fixed springs 25 which support an internal frame 26. Towards the rear end of the two lateral profiles 21 are pivoted, with pins 15, two profiles 22 with a C-shaped and L-shaped section which almost mate in a central area 13 of the front section 20. In this area 13 the two sections 22 are connected to adjustment devices 14 which will be better described below, and which comprise: a handle 101 which controls the locking and unlocking of the longitudinal sliding of the seat , a handle 102 which regulates the height of the frame 24 and therefore of the seat part 11; and two side knobs 103 which independently adjust the position, with respect to the frame 24, of the L-shaped sections 22.

The two rigid L-shaped frames 40, in resin, have a lateral part 41 and a front part 42, both concave, which respectively support portions 43 and 44 of L-shaped parts 39 of padding in foam material. The frame 26 supports a central part padded with foam material, indicated with 45.

Each pivot 15 is also pivoted with a respective plate 27 which has a step 16 in the lower rear area with which a peg 17 fixed to the frame 24 cooperates, so as to originate a stop for the position of the back part 12. In the upper area of the plates 27 there is a bush 104, in which a shaft 29 is inserted. Around this bush 104 are pivoted, by means of an adjustment device comprising a double knob 111 which will be better described below, the lower ends of two C-shaped sections 28 , arranged longitudinally along the back part 12.

5

I

15

20

25

30

35

40

45

50

55

60

65

626018

4

Two folded arms 30 are attached to the shaft 29, close to the plates 27, which are pivoted above the arms 31 of a perimeter tubular structure 32, with an externally arched shape, which has two arms 33 at the top which are pivoted to the respective profile 28. Such structure 32 supports, by means of springs 34, an internal frame 35. The two profiles 28 are also joined, above the middle, by a transverse C-profile 36.

A rigid resin frame 50 is posteriorly attached to the two profiles 28, which has a flat central area 51, between the two profiles 28 and substantially high up to the profile 36, and two concave lateral areas 52, external to the profiles 28 and as high as the sections 28. These two areas 52 support two parts of padding 49, in expanded material and as high as the areas 52, which constitute the side padding parts of the back. Each of these parts 49 defines a lower padded part 53 and an upper padded part 54. Between the two lower padded parts 53 there is arranged, fixed to the internal frame 35, a padded part 46, made of expanded material, of central support for the back. Between the two upper padded parts 54 the central part of the backrest is missing, in order to house a headrest 70, the position of which is adjustable with a device which will be described below. These two parts 54 are also connected to each other by two strips 55, made of elastic material, which act as support for the back when the headrest 70 is raised. These strips 55, the tension of which is adjustable, are fixed by means of an element 56 to the end of one of these areas 52 of the frame 50, and are hooked with a hook 57 to the end of the other area 52 of the frame 50.

At the rear of the central area 51 of the frame 50 is fixed a frame part 60 in rigid resin, trapezoidal in shape, which originates a rear compartment 61, and which has at the bottom a central portion 62, facing upwards, which determines a pocket, usable as magazine rack, etc. In the central area, said frame 60 has a tip-up body 63, comprising an ashtray with cigarette lighter.

The headrest 70 comprises a rigid frame 71, in resin, which forms a rear compartment 72, and which supports a part 73 of foam padding. The frame 71 is fixed to a structure 74 (fig. 3) which is pivoted by pins 75 to a plate 76 which slides along a profile 28, by means of guides inside the profile 28 itself. A forward rotation movement of the structure 74, around the pins 75, which can be easily carried out by the driver by inserting his hand into the compartment 72, causes a peg 77 (fixed to the structure 74) to be released from a notch 78 inside the profile 28, and therefore the movement of the headrest 70 is free, which can therefore be entirely housed in the back part 12, or be extracted at will, in order to adapt it to the needs of the driver. In the two side walls of the headrest 70 there are two earphones 79 for listening to the radio, removable and rotatable forward (as indicated by dashed lines in fig. 2), one of which carries a small lamp 81 with a concentrated light beam.

The various seat adjustment devices according to the present invention include the lever 101 (fig. 6) which centralises the release of the two guides 85 (fig. 7) for longitudinal sliding of the seat. In fact, these two guides 85 each have an internal fixed part 86 and a sliding part 87 on the part 86. The two parts 86 are arranged parallel and fixed at the rear to fixed plates 88 and at the front to a common fixed plate 89. The two sliding parts 86 are fastened, towards the front and rear zone, by means of elements 90, to respective longitudinal plates 91, which, towards the front and rear zone, have two parts 92 and 93 towards the top, towards whose top they are pivoted,

through pins 94 and 95, two rods 96 and 97 of an articulated parallelogram. These rods 96 and 97 are pivoted above the lateral profile 21 of the frame 24, which by connecting them forms a third side of the parallelogram, respectively by means of a pin 98 and via the pin 15, while below they are pivoted, by means of pins 114 and 115, at the ends of a rod 116, which constitutes the fourth side of the parallelogram.

The two plates 27, which are pivoted to the pins 15, at the bottom of the frame 24 extend in oblique sections 123 which are then bent at 90 ° towards the inside of the seat, forming sections 124, and are again folded at 90 ° , parallel to the sliding axis of the seat, forming sections 125 which are pivoted, by means of pins 126, to a 15 end of a respective rod 127, the other end of which is pivoted, by means of pins 128, to a respective part 129. The two parts 129 are fixed to the sides of a sleeve 130 which slides on guides 131 of a fixed structure 132, arranged centrally along the longitudinal axis of the seat, and fixed 20 to the fixed plate 89. The fixed structure 132 has a fixed longitudinal plate above 133 which has a plurality of transverse grooves 137. Two parallel levers 135 are connected to the handle 101 at the rear, which are pivoted at their ends by pins 134 to the sleeve 25 130 and between them carry a beam it is 136 which is adapted to engage within the transverse notches 137.

Two parallel plates 140 are fixed to the front profile 20 of the frame 24 in which a shaft 141 is inserted and fixed which coaxially carries two wheels 142 and 143 which have 30 facing parts 142 'and 143' which are provided with teeth suitable for engaging each other, so as to constitute a disengageable lock. The wheel 143 is in fact slidable on the shaft 141, although it is prevented from being rotated by a key 149, and is subject to the action of a cylindrical spring 144, which acts between the wheel 143 and an annular plate 145 which it is fixed to the side 146 of a U-shaped structure 147, the sides of which are pivoted, towards the lower end, to a pin 148 which is placed on a plate 150 which is fixed to a yoke structure 151, which is in turn, 40 with its two ends, in the front area of the two sliding parts 87 of the two guides 85. The U-shaped structure 147 has a bottom 152 with a curved external profile, and being pivoted above the shaft 141, it constitutes one side parallel to the rods 96 and 97 of the articulated parallel-45 gram described above.

A toothed sector 153 is attached to the plate 150 with which a toothed wheel 154 is attached which is fixed to the wheel 142.

The wheel 143 has a pair of inclined surfaces 50 155 which are adapted to cooperate one at a time (in the case of figs. 9 and 10 the upper one) with a pair of corresponding inclined surfaces 156 of an element 157 having an upper part 157 'which it has a compartment in which these inclined surfaces 156 are present and accommodates the wheel 143 with 55 the inclined surfaces 155, and a lower part 157 ", which is contained in a guide 158. In the guide 158, to which the handle 102 is externally fixed , there is a spring 160 which acts on the part 157 "of the element 157. The upper part 157 'of the element 157 is also fixed to a plate 105, which is placed near the plate 146, and is pivoted on the pin 148.

The two lateral knobs 103, as can be seen in fig. 11, control the rotation (limited to a certain arc) of the respective L-profile 22 around the pin 15, by means of a planocentric-type motion transmission device,

known, consisting of epicycloidal gears comprising in general an external crown wheel and an internal crown wheel, having a different number of teeth

5

626018

for example of a unit, and of the same module and pitch, and with different primitive diameters, for example of the module; • one of the two wheels is then connected to a first part, while the other carries a series of pins, arranged according to a circumference, which are lodged in larger diameter holes obtained in a second part. For example, if the internal crown wheel is rotated eccentric with respect to the external crown wheel, and if the pins are fixed to the internal crown wheel, while the second part is fixed, then there is a circular translation of this wheel with an internal ring gear, which causes a gradual rotation, of an angle corresponding to a tooth, of this external ring gear wheel. With particular reference to fig. 11, each knob 103 has a hexagonal opening and is inserted on a corresponding nut 161 of a cylindrical section 108, which at the end carries a cam 162. This section 108 is placed on a section of shaft 109, on which a ring 110, for fixing the knob 103. Around this cam 162 there is an internal ring gear wheel 163 which is eccentric with respect to an external ring gear wheel 164, coaxial with the shaft 109, and bearing a rear plate 165 , at the end of which a hole is obtained in which a head 166 of the L-shaped profile 22 is inserted. A plurality of pins 200 are then inserted into the wheel 163, arranged according to a circumference, which are housed in holes 201, of larger diameter, of a value equal to twice the eccentricity of the cam 162, obtained in a wheel 169 which is placed on the shaft 109, against the plate 140. There are also three arched springs 167, of about 120 °, which, resting on the their ends on pairs projections 168, fixed to the plate 140, prevent rotation of the shaped wheel 169, in which compartments they fit.

The knob 111, as is better visible in fig. 12, and with reference to figs. 6 and 7, comprises an internal part 112 and an external part 113, coaxial and independently rotatable.

The external part 113 rotates a bush 170, (similar to the bush 104 of fig. 2) which is inserted on a shaft 174, and which has a cam 171 which eccentrically rotates a wheel 172 with an external toothed crown which engages with an internal ring gear wheel 173, provided with one tooth more than the teeth of the wheel 172. The bush 170 with the shaft 174 are supported by the upper end of the relative plate 27 in which they are inserted, and in this plate 27 a plurality of pins 175 are inserted which cooperate in circular cavities 176 of the wheel 172 with external ring gear. The internal toothed wheel 173 carries an upper plate 178 which is fixed to a plate 179, in turn fixed to the profile 28. The assembly of the two toothed wheels 172 and 173, which have a number of different teeth of at least one unit, and are of the same module and pitch, and with different primitive diameters, for example of the module, and of the plate 27 which holds the pegs 175 which cooperate in the cavity 176 of the wheel 172, constitutes a "plane" type of transmission mechanism of motion -centric ", in which two extreme elements are coaxial (plate 27 and wheel 173) and the intermediate element connected to one of the two elements by means of these pins which allow relative movement, is eccentric (wheel 172); and by rotating said eccentric intermediate element, a gradual concentric relative rotation is determined between the two extreme elements. The internal part 112 has an external cylindrical part 180 which mates with an internal cylindrical part 181. The external cylindrical part 180 slides on the internal cylindrical part 181, with which it is constrained in rotation by means of a key 182. The external cylindrical part 180 has furthermore, a small plotter 183, the internal end of which can slide, in the longitudinal movement of the part 180, into a slit 184 obtained in the part 181. The end of this slit 184 has an inclined section 185, as indicated by dashed lines in fig. 12. A cover 186 is also placed on the part 5 180 to which a spring 187 is fixed, which is also fixed inside the part 181. This part 181 is fixed to the shaft 174, which has an eccentric part 188 on which an internal ring gear wheel 189 is inserted, which is coupled, via the system of the aforementioned planocentric motion transmission devices, to an external ring gear wheel 190, which is fixed to the plate 179. In the wheel 189 an internal toothed crown is attached to a pin 191 which is inserted into a slot 209 of an arm 192 fixed to one end of 15 a tube 193 (similar to the shaft 29 of fig. 2) into which the end of the post 174. This tube 193, at the other end, is inserted on a pin 194, which is fixed to the upper end of the other plate 27, and on which the end of a plate 195 is inserted, free to rotate , which is upperly fixed to the other profile 28. Towards the ends of Two arms 30 'are fixed to the tube 193 (similar to the arms 30 of fig. 2) which have a slot 196 at the top in which they are coupled by pins 197, respective arms 31 '(similar to the arms 31 of fig. 2) which are fixed to the perimeter tube-25 structure 32. This structure 32 is connected above by two arms 33 '(similar to the arms of fig. 2), pivoted with pins 198 to the transverse profile 36, which is attached to the two profiles 28. The external part 113 of the knob 112 also has a plurality of slits 200, 30 for to be able to extract the external part 180 of the part 112.

On the profiles 28 are fixed two profiles 28 'which have the internal indentation 78. In each of these profiles 28' there is a pair of rollers 201 which are fixed to the plate 76 external to the respective profile 28 'and which 35 guide the movement scroll. A respective end plate 212 is pivoted to these two plates 76 by means of pins 75, connected to each other by a plate 202, belonging to the structure 74, which also comprises a rod higher than U 203. The plate 212 is fixed to each of these plates 212 -40 visual peg 77, which can move in a slit 205 obtained in the relative plate 76, and which is pushed by a spiral spring 206 to get stuck in a compartment of the indentation 78.

The overall assembly of the seat of the present invention is as follows. First of all, the support structure 10 is formed separately, comprising the frame 24 with the internal frame 26, the L-shaped sections 22, the C-shaped profiles 28 of the back part 12, the perimeter tubular structure 32 with the frame inside 35, the structure 74 of the headrest 70, and the various adjustment devices de-50 written, with the handles or knobs 101, 102, 103 and 111. This support structure 10 therefore defines a plurality of zones suitable for accommodating the different parts of foam padding, which have already been made separately, with the relative frames in rigid resin. These filling parts are therefore easily and quickly fixed, in the most convenient way, to the corresponding areas of the support structure 10. Precisely the two L-shaped parts 39 are fixed, by means of their rigid frames 40, on the L-shaped sections 22 ,

after the padded part 45 has been fixed on the internal frame 26 of the seat part 11. The rigid frame 50 is fixed to the two C-sections 28 which carries the two padded parts 49, whose two upper parts 54 are connected by the two strips 55, after the padded part 46 has been fixed in the internal frame 35. The rigid frame 71 which carries the padding part 73 of the headrest 70 itself is fixed to the structure 74 of the pog-65 headrest 70. Finally, the frame part 60 is posteriorly fixed to the rigid frame 50. At the plate 27, where the hand is arranged

626018

6

double pole 111, an external plate 210 is also applied, with an aesthetic function.

The operation of the various adjustment devices described is as follows.

To move the seat longitudinally, it is sufficient to raise the handle 101, so the levers 135 raise the crosspiece 136 and release it from the relative notch 137 of the fixed longitudinal plate 133. By moving longitudinally the handle 101, the sleeve 130 is moved longitudinally to which , through the rods 127, and the sections 125 and 123 of the plates 27, the side profiles 21 of the frame 24 are fixed which, supported by the rods 96 and 97 on the longitudinal plates 91, can thus slide on the guides 85, until the handle 101 is lowered, so that the crosspiece 136 is inserted in a new notch 137 and blocks the sleeve 130 and therefore the frame 24 with respect to the fixed structure 132.

To adjust the height of the seat part 11, the handle 102 is activated which, by pulling the guide 158 out against the action of the spring 160, firstly allows a minimum adjustment effort. In fact, by raising or lowering the handle 102, a short rotation of the plate 105, which supports the element 157 and the guide 158, around the pin 148, and therefore one or the other (depending on the direction of rotation) of the inclined surfaces 156 of the element 157 acts on the corresponding inclined surface 155 of the wheel 143, causing an axial movement against the force of the spring 144, so as to detach the part 143 'from the facing part 142, of the wheel 142. This wheel 142 can thus rotating and, levering on the handle 102, the toothed wheel 154 can be rolled, for the desired section, onto the toothed sector 153 which is fixed. The U-shaped structure 147, during this rolling of the gear wheel 154 on the gear sector 155, is parallel to the rods 96 and 97 which together with the side profile 21 and the rod 116 define the articulated parallelogram. Therefore the rods 96 and 97, rotating around the pins 94 and 95, raise or lower the side profile 21 and therefore the frame 24 with the parts supported by it, parallel to the horizontal direction defined by the rod 116. To support the frame 24 at The desired height is provided with springs (not shown) connecting for example the rods 96 and 97 to the parts 92 and 93 so as to tend to arrange them vertically. To lock the frame 24 to the desired height, simply release the handle 102. In this way the element 157, no longer stressed, allows the detachment of the inclined surfaces 155 and 156, and the wheel 143 under the action of the spring 144 engages again with the wheel 142 which thus blocks the gear wheel 154.

To independently adjust the inclination of the L-shaped padded parts 39, it is sufficient to act on one or the other of the side knobs 103. In fact, the cam 162 is rotated, and since the toothed wheels 163 and 164 cooperate in the manner mentioned above planocentric devices, there is a gradual rotation of the wheel 164 and therefore a gradual rotation of the plate 165. As a result, the L-shaped section 22 and the L-shaped padded part 39 which is fixed above are gradually rotated, so as to be able to adjust the depth the seat itself to the length of the driver's limbs. As a result of a considerable effort applied on the seat part 11, and therefore on the L-shaped sections 22, there is a considerable force exerted on the plate 165, and transmitted to the wheels 163 and 169. The springs 167 therefore deform, allowing a rotation section of the wheel 169, and therefore of the wheels 163 and 164, whereby the plate 165 and the profile 22 are lowered and prevent damage to the adjustment mechanism due to the excessive effort applied above.

It is further provided that by tilting the back part 12 forward, a simultaneous advancement of the seat is also caused, in order to facilitate the passenger's entry to the rear seats. In fact, by bending the back part 12 forward, the plates 27 rotate around the pins 15 and the sections 125 would tend to move backwards. However, since these sections 125 are pivoted to the rods 127 which are pivoted to the parts 129 which are fixed to the sleeve 130 (in turn fixed for locking the crosspiece 136 in the notches 137), these sections 125 cannot move backwards and therefore cause rotation of the plates 27 around the respective pins 126. Therefore, since the plates 27 are pivoted by the pins 15, to the frame 24, the frame 24 itself and all the seat connected thereto is dragged longitudinally forward, sliding on the guides 85.

Using the double knob 111, on the other hand, as already mentioned above, it is possible to independently adjust the inclination of the back part 12 and the position of the tubular structure 32 which carries the padded part 46. In fact, by rotating the external part 113 the bush is rotated 170 which causes eccentric movement of the external toothed wheel 172 via the cam 171. The inner ring gear wheel 173 is therefore gradually rotated, and the plate 178 gradually rotates, which through the plate 179 transmits the gradual rotation to the sections 28 and therefore to the whole back part 12.

To rotate the internal part 112, the external cylindrical part 180 is first extracted (inserting the fingers in the slots 200), which then remains external with a slight final rotation so that the pin 183 is positioned in the inclined section 185 of the slit 184. then rotating the external cylindrical part 180 rotates the internal cylindrical part 181 which rotates the shaft 174. Therefore, it rotates gradually, eccentric around the external gear wheel 190, the internal gear wheel 189, which gradually rotates the arm 192 and therefore the tube 193 on which the arms 30 'are fixed. The eccentric movement of the wheel 189 with respect to the arm 192, which are connected by the pin 191, is allowed by the slot 209. The gradual rotation of the arms 30 'determines, through the arms 31', a gradual forward rotation of the tubular perimeter structure 32 , around the upper pins 198. Upon reaching the desired position for the structure 32 and therefore for the padded part 46, the external cylindrical part 180 is retracted into the external part 113, simply with a slight rotation in the opposite direction, so that the pylox 183 comes out of the inclined portion 185, and the part 180 can thus completely retract on the internal part 181, under the action of the spring 187.

Finally, the position of the headrest 70 is adjustable, simply by tilting the headrest 70 itself forward, so that each plate 212 rotating around the pins 75 releases the relative peg 77 from the indentation 78, overcoming the force of the spring 206, and making it move in the slot 205 of the relative plate 76. The plates 76 and the structure 74 connected thereto can thus slide along the sections 281, by means of the internal guide wheels 201. At the desired position for the headrest 70, it is sufficient to release it, so that the springs 206 repel the peg 77 into the notch 78 and the plates 76 with the structure 74 remain locked.

From what has been described, the advantages of the seat of the present invention are evident. In fact, first of all, it presents a considerable ease and rapidity of assembly, since the various component elements, such as the support structure with the various adjustment devices, and the various parts of foam padding with the relative rigid frames, are already made separately, in a finite way, and then they are only assembled together in the final phase. The result is also greater ease of transport, and less need for skilled labor to assemble the seat. Furthermore, only some parts of can be easily and conveniently replaced

5

10

15

20

25

30

35

40

45

50

55

60

65

7

626018

seat padding, with its rigid resin frame, to remedy damage to some parts; or even all the padding parts can be replaced to change the color of the seat, while keeping the support structure intact.

In addition, the various position adjustment devices described, both for the adjustment of the seat and back parts as a whole, and for the individual adjustment of the different upholstered parts, allow a considerable comfort and adaptability of the seat to the needs of any driver, with a relatively simple realization.

It is clear that modifications and variations can be made to the described embodiments of the seat of the present invention which do not depart from the scope of the inventive idea contained therein. For example, the L-shaped padded parts 39 can also be provided with a device which allows them to move sideways away from the frame 74. Or, again, the various adjustment devices described can be motorized, in order to operate them by means of control buttons.

The seat described and illustrated can also have a single padding part for the seat part 11 and a single padding part for the back part 12 (comprising, for example, the parts 45 and 39 respectively, and the parts 46 and 49, with or without the headrest 70) provided that these padding parts are made completely separate from the support structure 10, and are then assembled to the same only in the final phase to give origin to the finished seat. Or the seat part 11 can comprise the padded part 45 and a single padded part substantially of the shape of the two padding parts 39, provided with a single rigid frame (for example in rigid resin) which is fixed in the final assembly phase of the seat, to the support structure 10. Thus the back part 12 can comprise the padded part 46 and a single padded part substantially of the shape of the two padding parts 49, with an upper connecting section, and with or without a headrest.

15 The seat described and illustrated can also be provided with only some of the various adjustment devices described. Furthermore, these adjustment devices can have modifications and variations, or even be made according to a different principle. For example, the double adjustment knob 111 can be made with motion transmission mechanisms other than the planocentric mechanisms described; and these planocentric mechanisms can also be applied to others of the various regulation devices described.

v

5 drawings sheets

Claims (27)

626018 2 1. Vehicle seat, comprising a support structure (10) for a seat part (11) and a back part (12) and at least a part of padding (39, 45, 46, 49) in said seat parts and / or backrest, characterized in that it includes separate and separable padding parts (39, 45, 46, 49) in said seat (11) and / or backrest (12) parts, and adjustment devices (14, 111) independent of said distinct padding parts. 2. Seat according to claim 1, characterized in that said support structure (10) comprises parts of the bearing structure (24, 22, 28), which determine areas for the assembly of said padding parts. Seat according to one of the preceding claims, characterized in that said padding parts (39, 45, 46, 49) have rigid frames (40, 50) for fixing to said support structure. Seat according to claim 3, characterized in that said rigid frames (40, 50) are in rigid resin. Seat according to one of the preceding claims, characterized in that said support structure (10) comprises a central frame (24) of said seat part (11), and a frame (26) supporting a part of central padding (45) of said seat part. Seat according to claims 3 and 5, characterized in that said support structure (10) comprises a part (22) placed laterally to said central frame (24) of said seat part (11), on said part (22 ) being one (40) of said rigid frames bearing one (39) of said padding parts being applicable. Seat according to claim 6, characterized in that said rigid frame (40) applicable on said first part (22) has a concave shape. Seat according to claim 6 or 7, characterized in that said part (22) placed laterally to said central frame (24) and said rigid frame (40) applicable on said part (22) are bent at 90 ° towards the area front of said central frame (24). Seat according to one of the preceding claims, characterized in that said support structure (10) in said backrest part (12) comprises at least two longitudinal support profiles (28) and a support frame (35) of a part of central padding (46) of said back part (12). Seat according to claims 3 and 9, characterized in that one (50) of said rigid frames carrying said padding parts (49) and comprising a central part (51) and two are applicable to said support profiles (28) lateral parts (52) for the back part, said two lateral parts (52) having the outer edge folded towards the front of the seat, so as to originate anteriorly an area for housing said side padding parts (49) of the back part. 11. Seat according to claim 10, characterized in that said lateral parts (52) of said rigid frame (50) of the back part (12) of the seat, are of greater height than said central part (51), so as to define a housing compartment complete with a headrest (70); said two lateral parts, in the area of said compartment, being connected by at least one transversal strip (55). Seat according to one of the preceding claims, characterized in that said seat has a headrest (70) in which radio speakers (79) and / or a concentrated light beam bulb (81) are housed in a removable and orientable way . Seat according to one of the preceding claims, characterized in that in the rear area of said back part (12) there is a frame part (60) defining a magazine pocket (61) and comprising an ashtray (63) with cigarette lighter. 14. Seat according to claim 13, characterized in that said frame part (60) is made of resin 5 rigid. Seat according to one of the preceding claims, characterized in that said padding parts (39, 45, 46, 49) are made of foam material. Vehicle seat according to one of the preceding claims, characterized in that it comprises a single actuation and control element (101) arranged in a central and front position of said seat part (11), for releasing said seat with respect to longitudinal sliding guides (85) for the seat itself. 15 17. Seat according to claim 16, characterized in that it comprises a device (27, 21, 123, 124, 125, 126, 127, 128, 129, 130) connected to said single element (135, 136, 133, 130 ) for actuation and control in a central position, to create, simultaneously with the 20 forward inclination of the back part (12), also a forward movement of the seat, on said sliding guides (85). Vehicle seat according to one of the preceding claims, characterized in that it comprises a first one 25 device for adjusting the height of a central frame (24) of said seat part (11), said first device comprising an articulated parallelogram system (21, 97, 116, 96). 19. Seat according to claim 18, characterized 30 by the fact that said first device comprises a device (105, 157, 143, 142, 154, 153) with engagement and disengagement to block or not the actuation thereof. 20. Seat according to claim 19, characterized in that said engagement and disengagement device comprises 35 takes at least two oblique surfaces (155, 156) of two distinct elements (143, 157), suitable for cooperating and causing said engagement or disengagement of said device. Vehicle seat according to one of the preceding claims, characterized in that said seat part 40 (11) comprises a central frame (24) and at least a part (22) lateral to said central frame, and by the fact of comprising a second device (103, 162, 163, 164, 165) for adjusting the position of said part lateral (22) with respect to said central frame (24) of said seat part. 45 22. Seat according to claim 21, characterized in that said second device substantially regulates the height of said lateral part (22) with respect to said central frame (24) of said seat part. 23. Seat according to claim 22, characterized 50 by the fact that said second device comprises an adjustment knob (103) and a planocentric motion transmission device (162, 163, 164). 24. Seat according to one of claims 18 to 23, characterized in that said first and / or second arrangement The adjustment devices are operated by control elements (102, 103) arranged in the central front position of said seat part. 25. Vehicle seat according to one of the preceding claims, characterized in that said rear part 60 naie (12) comprises a support frame (28) and a support frame (35) of a central part of said back part, and by the fact of comprising a third device (174, 190, 189, 192, 193, 30 ', 31') for adjusting the position of said support frame (35) of said part 65 central of said back part, with respect to said support frame (28) of said back part. Seat according to claim 25, characterized in that it comprises a fourth device (170, 171, 3 626018 172, 173, 178, 179, 28) for adjusting, independently of said third device, the position of the support structure (28) of said back part (12) with respect to said seat part (11). 27. Seat according to claim 25 or 26, characterized in that said third and / or fourth adjustment device comprises a planocentric type transmission device. 28. Seat according to claim 26 or 27, characterized in that said third or fourth adjustment device is operated independently by means of a double knob (111), said knob having an internal part (112) which can be removed with respect to a part external (113), said internal and external parts being able to carry out said two adjustments separately. Vehicle seat, according to one of the preceding claims and comprising a support structure (74), for a headrest (70), characterized in that the position of said headrest is adjustable with respect to said backrest part (12), by means of an adjustment device (212, 77, 78, 206, 205), comprising means (77, 78) for releasing and locking the headrest itself, actuated by a forward inclination of the headrest itself.