DE10296607T5 - Manual flat-folding seat joint arrangement - Google Patents

Abstract

An adjustment mechanism with:
a quadrant;
an arm that rotates the quadrant;
a blocking member slidably supported by the quadrant to engage the arm, the quadrant being selectively blocked in one of a plurality of angular positions with respect to the arm and
a cam plate rotatably received on the quadrant to position the blocking member with respect to the arm.

Description

BACKGROUND OF THE INVENTION

1. Technical area

The present invention relates generally Seat back adjustment mechanisms and more specifically, a seat back adjustment mechanism that the Finding a seat back in a plurality of folded down forward Positions allowed.

2. Discussion

Vehicle markets, such as minivans and "sport utility", are very competitive and are the focus for improvement by car manufacturers. In particular automakers try the overall usefulness and convenience of vehicles in these markets to improve to attract and retain customers. A special The characteristic is a flexible vehicle interior. Flexibility means in this context the ability an interior, seating Provide that can be modified to meet needs of a particular customer. For example, could it a customer wish that the back seat is removed to an enlarged cargo space to get while a medium seat or seats for additional passengers should be preserved. Furthermore, could a passenger wish that the backrest a front or middle seat is folded down, around while to provide a working space for driving. As such, a passenger could place a laptop computer on the folded backrest, or the folded backrest as a small desk for writing or Use reading.

While they flexibility vehicle seats also have features to the convenience of a vehicle guest to get how about the ability a seat back in any number of desired Positions to adjust. There is a large number in the prior art of seat back adjustments and forward folding adjustment mechanisms known. However, conventional, forward folding adjustment mechanisms simply free the backrest so that it can be folded forward into a position that is essentially is parallel to the seat. Conventional adjustment mechanisms also provide just one forward folded position for the backrest, and they are not blocked in this position. If such a backrest with a conventional one Adjustment or with forward folding adjustment mechanisms placed in the folded forward position would, to be used by a passenger as a work surface while driving could become a problem arise when the vehicle stops. A flat one Would lean allow objects on the work surface, e.g. a laptop computer or a book, move and possibly from the seat back when braking and accelerating the vehicle falling off.

Furthermore, conventional ones require forward folding adjustment mechanisms that a significant force on the Release mechanism is applied to the seat back for folding forward release. Often the required force suddenly releases the release mechanism, what a bump for the operator leads, if the force exerted by the operator is the holding force of the release mechanism overcomes.

Furthermore, conventional ones Seat back adjustment mechanisms have a particular disadvantage in that there is that the reclining position of the seat back is the folded forward Position of the seat back in relation to the horizontal before the Seat back is folded forward. If the seat back e.g. before folding forward in one completely is in the adjusted position, the seat back is in the after front folded position at a significant angle with respect to the horizontal are. This is undesirable, especially in the event that the seat back is used as a work surface.

It is therefore desirable in the industry to have one forward folding adjustment mechanism for use with a seat back to provide, which allows an operator to in the seat back a desired one forward position to block. As such, could a seat back forward to be folded while it provides a sufficient angle to prevent one Item, such as a laptop computer or a book, during the Braking slides forward. It is also desirable in the industry to have one forward provide folding adjustment mechanism with a seat back can be used that allows an operator to Seat back in a substantially horizontal or flat fold Collapse position, independently from the initial adjustment position the seat back in relation to the seat. Furthermore, it is in technology he wishes, an improved release mechanism for seat back adjustment and one forward folding setting mechanism to indicate the actuation by a Operator relieved without an associated shock as with usual Mechanisms occurs.

SUMMARY THE INVENTION

The present invention provides an adjustment mechanism that allows a seat back to be locked in a plurality of forward folded positions with respect to a seat. Accordingly, the back of a seat back can be positioned parallel to the seat or in ver various acute angles with respect to the seat can be blocked.

The adjustment mechanism points according to the principles the current Invention inner and outer plates which are rotatably mounted on one arm. The arm has one first area, which has a plurality of ratchet teeth to selectively in a blocking element to engage that on the inner and outer plates is slidably housed in to the inner and outer panels block a plurality of rotational positions with respect to the arm. A cam plate is rotatably received between the inner and outer plates and is biased by a biasing element to enter the blocking element intervene. The cam plate can be operated around the blocking element release, creating a seat back with respect to the arm forward can be rotated. Once rotated to a desired position, the Adjustment mechanism of the current Invention block the seat back in this position.

According to a variant of the invention has an adjustment mechanism for a vehicle seat on a quadrant, an arm that rotates the quadrant picks up a blocking element that moves the quadrant holds and selectively engages the arm to the quadrant in a plurality of to block forward folded positions in relation to the arm a cam plate rotatably supported on the quadrant selectively biasing the blocking member to engage the arm, and a gear assembly rotatably supported by the quadrant is to operate the cam plate. The gear assembly provides a gear reduction to the input force of the Reduce operator that is required to the cam to be released by the blocking element in a blocked position. The gear arrangement preferably has a first tooth plate, which is rotatably supported by the quadrant, and a second tooth plate, which is in mesh with the first tooth plate and in work connection stands with the cam plate to selectively rotate the cam plate to effect.

According to another variant of the Invention, a seat adjustment mechanism has an arm that is rotatable defines a first blocking shoulder, a sector plate, of the arm is rotatably held and defines a second blocking shoulder, which has a blocking recess, also a blocking element, selectively with at least one of the first and second blocking shoulders interacts, also a quadrant that rotates from the arm is held and the blocking elements slidably holds the Quadrants in one of a first and a second position block with respect to the arm, further a cam plate, the rotatable from the quadrant for selective engagement in the blocking element is added to the quadrant in one of the first and second Blocking positions. The blocking element is in the first position biased against the first blocking shoulder, and in the second Position is the blocking element in the direction of the blocking recess biased. A gear arrangement is preferably provided working on that Quadrants held to operate the cam plate. The gear arrangement preferably has a first tooth plate which is rotatable on the Quadrant is held, as well as a second tooth plate in the tooth mesh with the first tooth plate and in working connection with the cam plate, to selectively rotate the cam plate.

Other advantages and features of current Invention will become apparent from the following description and the related claims with the associated Drawing clearly.

SHORT DESCRIPTION THE DRAWING

1 Figure 3 is a side view of an adjustment mechanism in accordance with the present invention;

2 is an exploded perspective view of the adjustment mechanism;

3 is a side view showing the adjustment mechanism of the 1 and 2 shows in a first position;

4 is a side view showing the adjustment mechanism of the 1 and 2 in a second position;

5 Fig. 3 is an exploded perspective view of a second embodiment of the adjustment mechanism according to the present invention;

6a . 6b and 6c are schematic side views of a seat assembly having the adjustment mechanism according to the present invention, wherein a seat back is shown in different positions with respect to a seat;

7 Figure 3 is a side view of a seat assembly with a seat back in a forward folded position with respect to a seat in accordance with the present invention;

8th Figure 3 is a side view of a third embodiment of the adjustment mechanism in accordance with the present invention;

9 Figure 3 is an exploded view of a third embodiment of the adjustment mechanism in accordance with the present invention.

10 Figure 3 is a side view of a fourth embodiment of the adjustment mechanism in accordance with the present invention;

11 Figure 12 is an exploded view of a fourth embodiment of the adjustment mechanism in accordance with the present invention;

12 is a side view of a third embodiment of the adjustment mechanism according to the present invention in a first position;

13 is a side view of a third. Execution of the adjustment mechanism according to the ge current invention in a second position;

14 Figure 3 is a side view of a fifth embodiment of the adjustment mechanism in accordance with the present invention; and

15 Figure 12 is an exploded view of a fifth embodiment of the adjustment mechanism in accordance with the present invention.

DETAILED DESCRIPTION THE PREFERRED VERSION

With special reference to the 1 and 2 is an adjustment mechanism 10 shown for use with a seating arrangement. The adjustment mechanism 10 generally has an arm 12 on that between inner and outer plates 18 . 20 is attached and in relation to a quadrant 14 is pivotable and which is selective with respect to the quadrant 14 through a blocking element 22 is blocked. The blocking element 22 acts selectively with a cam plate 24 together.

A first end of the arm 12 has a section 16 on the a plurality of ratchet teeth 26 has. A second end of the arm 12 has an opening 28 to connect to a linear adjustment mechanism, and an opening 29 is provided around a pivot axis for the adjustment mechanism 10 to be provided (cf. 6a to 7 ). The first end of the arm 12 also has a shoulder 30 on that a first side face 32 has an upper surface 34 and a second side surface 36 , The first face 32 forms a corner 38 of the arm 12 on a connection with an upper surface 39 ,

The arm 12 is between the inner and outer plates 18 . 20 on a first pivot 40 held and rotatably added. The first pivot 40 is in an opening 42 of the arm 12 added. The first pivot 40 has first and second cylindrical extensions 44 . 46 on that in first and second openings 48 . 50 of the inner and outer plates 18 . 20 held and included in it. The first pivot 40 also has a support bearing 52 on, which extends radially and between the first and second cylindrical extensions 44 . 46 is arranged. The support camp 52 has a storage area 54 on that in the opening 42 is added to the quadrant 14 in relation to the arm 12 keep rotatable.

The cam plate 24 is also between the inner and outer plates 18 . 20 arranged and is rotatable by a second pivot 56 kept in a central opening 58 the cam plate 24 is included. The second pivot 56 has first and second cylindrical extensions 60 . 62 on that in first and second openings 64 respectively. 66 recorded and held in it. The second pivot 56 also has a support bearing 68 on, which extends radially and between the first and second cylindrical extensions 60 . 62 is arranged. The support camp 68 has a storage area 70 on that in the opening 58 is added to the cam plate 24 keep rotatable.

One end of the cam plate 24 has a cam surface 72 on. An opposite end of the cam plate 24 has an opening 74 on to a first end of a spring 76 to hold and the inner plate 18 has an opening 75 on to a second end of the spring 76 to keep. One end of the cam plate 24 has an additional opening 77 on, for connection with a handle 212 ( 6 ). The spring 76 tightens the cam plate 24 in a first direction of rotation in rotation, whereby the cam surface 72 towards the blocking element 22 is biased, which in turn is to the corner 38 and against the first side surface 32 of the arm 12 is pushed. In this position the quadrant 14 in a first upright position with respect to the arm 12 held. A cross element 78 has cylindrical extensions 80 . 82 on that in openings 84 respectively. 86 on the inner and outer plates 18 . 20 are held. The cross element 78 contacts a surface 79 of the arm 12 to reverse the quadrant 14 in relation to the arm 12 to prevent.

The blocking element 22 is a wedge-shaped element that has an arcuate surface at one wide end 88 has to with the cam surface 72 the cam plate 24 interact, and a slit 90 is provided at a narrow end. The slot 90 is designed to lock teeth 26 of the arm 12 intervene to the quadrant 14 in relation to the arm 12 to block. ribs 92 . 94 extend vertically from side faces 96 . 98 of the blocking element 22 out. Ribs 92 . 94 are slidable within slots 100 . 102 the inner and outer plates 18 . 20 kept what allowed the blocking element 22 shifts in between. The blocking element 22 shifts in the slots 100 . 102 while it is between the arm 12 and the cam plate 24 is applied. The cam plate 24 acts on the curved surface 88 to the blocking element 22 against the arm 12 pretension.

With special reference to the 1 . 3 and, 4 will now be the function of the adjustment mechanism 10 described in detail. In a first preferred embodiment, the adjustment mechanism enables this 10 that the quadrant 14 in relation to the arm 12 is pivoted forward and blocked in a plurality of forward inclined positions. Around the quadrant 14 to pivot forward is the cam plate 24 against the biasing force of the spring 76 rotated what the cam surface 72 forces to slide along and then off the arcuate surface 88 of the blocking element 22 to move away. So the ribs are 92 . 94 of the blocking element 22 free yourself in the slits 100 . 102 the inner and outer mounting plates 18 . 20 to move while moving the blocking element 22 from a retracted position next to the first side surface 32 to a raised position on the top surface 34 the shoulder 30 emotional. In particular, the blocking element 22 between the first side surface 32 of the arm 12 and the slots 100 . 102 trapped while the cam plate 24 against the bias of the spring 76 twisted. If the cam surface 72 from the blocking engagement with the blocking element 22 is moved out, is a movement of the blocking element 22 not hindered upwards. During the quadrant 14 is rotated, push the walls through the slots 100 . 102 the inner and outer mounting plates 18 . 20 define the blocking element 22 inside the slots 100 . 102 up until the blocking element 22 on the top surface 34 slides. Continued twisting of the quadrant 14 forward causes the blocking element 22 itself along the top surface 34 shifts as best in 3 you can see. The blocking element is located 22 once on the top surface 34 , the cam plate 24 be released with the spring 76 again the cam plate 24 preloaded in the first direction of rotation. The cam surface 72 tensions the blocking element 22 inside the slots 100 . 102 turn in front to the blocking element 22 against the top surface 34 to push.

Has the quadrant 14 once moved forward sufficiently, the blocking element slides 22 from the top surface 34 away and on the ratchet area 16 , As a result of the preload on the cam plate 24 engages the blocking element 22 directly in the first ratchet tooth 26 one so the quadrant 14 in a first forward inclined position with respect to the arm 12 is held.

A variety of alternative forward locking positions can be achieved by actuating the cam plate 24 again around the arcuate surface 88 of the blocking element 22 to release again. Once released, the blocking element is 22 over the ratchet tooth section 16 movable until a desired position is reached. When a desired position is reached, the cam plate 24 released, causing the blocking element 22 in turn to engage a particular tooth 26 of the ratchet tooth section 16 brought.

Around the quadrant 14 in an upright position in relation to the arm 12 bring back, the cam plate 24 in turn against the biasing force of the spring 76 twisted to the cam plate 24 from the blocking element 22 release. While the quadrant 14 moved backwards, the blocking element moves 22 from a retracted position next to the second side surface 36 to a raised position on the top surface 34 the shoulder 30 , In particular, the blocking element 22 between the second side surface 36 of the arm 12 and the slots 100 . 102 included until the blocking element 22 on the top surface 34 of the arm 12 shifts. The blocking element is located 22 once on the top surface 34 , the cam plate 24 be released, causing the spring 76 again the cam plate 24 biased in the first direction of rotation. The cam surface thus tensions 72 the blocking element 22 in the slots 100 . 102 before to the blocking element 22 against the top surface 34 to act upon. After the quadrant 14 is sufficiently turned back, the cam plate is preloaded 24 that the blocking element 22 inside the slots 100 . 102 to the corner 38 to and against the first side surface 32 shifts, causing the quadrant 14 is blocked in an upright position.

With reference to 5 A second preferred embodiment of the present invention is shown and as an adjustment mechanism 110 designated. The adjustment mechanism 110 generally has an arm 112 on that on a quadrant 114 is pivotally attached and between inner and outer plates 116 . 118 is held. The quadrant 114 is selective with respect to the arm 112 through a blocking element 120 blocked that with a cam plate 122 interacts.

A first end of the arm 112 has a first corner 124 , a second corner 126 , a first side surface 128 , a first upper surface 130 , a second upper surface 132 , an arcuate surface 134 , a second side surface 136 and a third top surface 138 on. The first corner 124 is at the intersection of the first side surface 128 and the third top surface 138 educated. The second corner 126 is at the intersection of the second top surface 132 and the second side surface 136 educated. A second end of the arm 112 has a first opening 140 to provide a pivot axis and a second opening 142 to connect to a linear adjustment mechanism (cf. 6a to 7 ) to provide. The arm 112 takes the inner and outer panels 116 . 118 on a first pivot 144 rotatable on.

The first pivot 144 has first and second cylindrical extensions 146 . 148 on that in openings 150 . 152 the inner and outer holding plates 116 . 118 recorded and held in it. The first pivot 144 also has a radially extending support bearing 154 on that's a storage area 156 having. The first pivot 144 is in an opening 158 of the arm 112 added, causing the first pivot 144 the quadrant 114 in relation to the arm 112 holds rotatable.

The cam plate 122 is also between the inner and outer mounting plates 116 . 118 held and rotatably received between them by a second pivot 160 that is in a central opening 162 the cam plate 122 is held. The second pivot 160 has first and second cylindrical extensions 164 . 166 on that in openings 168 . 170 the inner or outer plates 116 . 118 recorded and held in it. The second pivot 160 also has a radially extending support bearing 172 on that's a storage area 174 has. The second pivot 160 is in the opening 162 of the arm 112 added, causing the second pivot 160 the quadrant 114 on the storage area 174 holds rotatable.

One end of the cam plate 122 has a cam surface 176 on, and an opposite end of the cam plate 122 has an opening 178 on to a first end of a spring 180 to keep. The spring 180 is between the cam plate 122 and an opening 181 kept that in a tab 182 is trained. The tab 182 is along an upper surface of the inner plate 116 educated. The spring 180 tightens the cam plate 122 rotationally in a first direction, thereby creating the cam surface 176 the blocking element 120 to the first corner 124 to and against the first side surface 128 of the arm 112 biases. When the blocking element is in this position, the inner and outer plates are 116 . 118 in a first upright position with respect to the arm 112 held.

The blocking element 120 is between the arm 112 and the cam plate 122 held and has an arcuate surface 188 on to with the cam surface 176 the cam plate 122 co. The cam plate 122 acts on the curved surface 188 to the blocking element 120 against the arm 112 pretension. ribs 186 . 188 extend perpendicularly from the relevant side surfaces of the blocking element 120 out. Ribs 186 . 188 are slidable within slots 194 . 196 on the inner and outer plates 116 . 118 kept what allowed the blocking element 120 shifts in between.

As previously mentioned, the quadrant 14 in relation to the arm 12 folded forward and locked in a single forward tilt position. Around the quadrant 114 To fold forward, the cam plate 122 in a second direction opposite to the biasing direction of the spring 180 turned. While the cam plate 122 rotates in the second direction, the cam surface slides 176 along and then moves from the arcuate surface 184 of the blocking element 120 away, so the blocking element 120 is released to in the slots 194 . 196 of the inner and outer plates 116 . 118 to slide while it is in a retracted position opposite the first side surface 128 to an outer position on the first upper surface 130 of the arm 112 emotional. In particular, the blocking element 120 between the first side surface 128 of the arm 112 and the slots 194 . 196 trapped while the cam plate 122 against the bias of the spring 180 rotates. While the cam surface 176 from blocking the blocking element 120 is moved away, is a movement of the blocking element 120 not hindered upwards. The walls, the slots 194 . 196 of the inner and outer plates 116 . 118 define, press the blocking element 120 inside the slots 194 . 196 up until the blocking element 120 on the first top surface 130 of the arm 112 slides. The blocking element is located 120 once on the top surface 130 , the cam plate 122 released so the spring 180 again the cam plate 122 preloads in the first direction of rotation, which further causes the blocking element 120 against the first top surface 130 is biased.

After sufficient forward rotation of the quadrant 114 slides the blocking element 120 from the first top surface 130 away and into the second corner 126 , The blocking element 120 is through the cam plate 122 to intervene in the second corner 126 biased. The engagement of the blocking element 120 and the second corner 126 holds the quadrant 114 in a forward position with respect to the arm 112 ,

The quadrant 114 can be rotated further forward by the cam plate 122 again against the bias of the spring 180 is rotated, thereby engaging the cam plate 122 and the blocking element 120 is released. The quadrant 114 turns forward, closes the blocking element 120 between the slots 194 . 196 and the second top surface 132 on. Again, the walls press the slots 194 . 196 define the blocking element 120 inside the slots 194 . 196 up until the blocking element 120 on the arcuate surface 134 slides. Is the blocking element 120 once in contact with the arcuate surface 134 , the cam plate 122 in turn, releasing the spring 180 the cam plate 122 biases. As a result, the cam surface presses 176 again the blocking element 120 down into the slots 194 . 196 , causing the blocking element 120 against the arcuate surface 134 is biased. By the quadrant 114 is sufficiently turned back, the blocking element 120 again within the second corner 126 be positioned, creating the quadrant 114 is blocked in the first forward position.

The quadrant 114 can be rotated backwards to its initial upright position by turning the cam plate 122 against the bias of the spring 180 is operated, causing the cam plate 122 from the blocking element 64 is released. While the quadrant 114 moved backwards is the blocking element 120 between the slots 194 . 196 and the second side surface 136 trapped, causing the blocking element 120 in the slots 194 . 196 up and onto the first top surface 130 is pressed. After a sufficient backward rotation of the quadrant 114 becomes the blocking element 120 through the cam plate 122 downward engaging the first corner 124 pressed. Thus the quadrant 114 in the first blocked upright position.

With reference to the 6a . 6b . 6c and 7 is an implementation of the adjustment mechanism 10 in a seating arrangement 200 shown. The seating arrangement 200 has a seat back 202 , a seat 204 , the adjustment mechanism 10 and a linear adjustment mechanism 206 on. The linear adjustment mechanism 206 has a handle 208 and is of a type known in the art. The linear adjustment mechanism 206 can be operated to the seat back 202 in terms of seat 204 to swivel and around the seat back 202 to block in a plurality of adjustment positions. The seat back 202 is in an upright position, a first inclined position and a second inclined position in the 6a . 6b and 6c shown. While the seat back 202 is adjusted backwards, the adjustment mechanism turns 10 about a pivot axis 210 , The quadrant 14 of the adjustment mechanism 10 attaches the seat back 202 on the seat 204 by means of the arm 12 , The adjustment mechanism 10 is in any inclined position of the seat back 202 by a handle 212 actuated to the seat back 202 in terms of seat 204 to lean forward. 7 shows a forward folded position of the seat back 202 from the first inclined, in 6b shown position. However, it should be noted that although the adjustment mechanism 10 was used in the above description, the adjustment mechanism 110 could instead be used according to the invention.

With reference to the 8th and 9 Fig. 3 is a third embodiment of the present invention as an adjustment mechanism 310 designated. The adjustment mechanism 310 generally has an arm 312 on that on a quadrant 314 is pivotally attached and between inner and outer plates 318 . 320 is held. The quadrant 314 becomes selective in relation to the arm 312 through a blocking element 322 blocked that selectively with a cam plate 324 interacts. The cam plate 324 is by means of a gear arrangement 323 actuated.

A first end of the arm 312 has an area 316 with a plurality of ratchet teeth 326 on. A second end of the arm 312 has an opening 328 to connect with a linear adjustment mechanism and it's an opening 397 provided around a pivot axis for the adjustment mechanism 310 (see. 8th and 9 ) to provide. The first end of the arm 312 also has a shoulder 330 on, the first side faces 332 , an upper surface 334 and a second side surface 336 has. The first face 332 forms a corner 338 of the arm 312 at an intersection with an upper surface 339 ,

The arm 312 is between the inner and outer plates 318 . 320 on a first pivot 340 recorded and held. The first pivot 340 is in an opening 342 of the arm 312 added. The first pivot 340 has first and second cylindrical extensions 344 . 346 on that in first and second openings 348 respectively. 350 are recorded and held. The first pivot 340 also has a support bearing 352 on, which extends radially and between the first and second cylindrical extensions 344 . 346 is held. The support camp 352 has a storage area 354 on that in the opening 342 is added to the quadrant 314 in relation to the arm 312 keep rotatable.

The gear assembly closes the cam plate 324 one that rotates between the inner and outer plates 318 . 320 is included, as well as first and second tooth plates 325 . 327 , each rotatable between the inner and outer plates 318 . 320 are held. The cam plate 324 is rotatable on a second pivot 356 recorded in a central opening 358 the cam plate 324 is held. The second pivot 356 has first and second cylindrical extensions 360 . 362 on that in first and second openings 364 respectively. 366 are recorded and held. The second pivot 356 also has a support bearing 368 on, which extends radially and between the first and second cylindrical extensions 360 . 362 is held. The support camp 368 has a storage area 370 on that in the opening 358 is held to the cam plate 324 keep rotatable.

The first tooth plate 325 has a central section 331 and an operating arm 333 , as well as a cable release opening 374 for connection with a cable (not shown). The first tooth plate 325 also has a series of teeth 335 on, extending radially from the central section 331 for a tooth-like engagement with the second tooth plate 327 extend as discussed below. The central section 331 also has a cylindrical post 337 formed on it to rotate on the inner plate 320 of the quadrant 314 to be included. The cylindrical post 337 includes a storage area and is in an opening 341 that in the inner plate 318 is formed. During the present invention a cylindrical post 337 includes that in the first tooth plate 325 is formed, it is provided that the cylindrical post 337 could be a separate element on the first tooth plate 325 is fastened in a suitable manner, which is to be regarded as being within the scope of the invention.

The second tooth plate 327 closes a central section 343 and a reaction arm 345 with an engagement surface 371 on. The central section 343 has a series of teeth 347 on that radially away from it for tooth-like engagement with the first tooth plate 325 extend as discussed below. The central section 343 further includes first and second cylindrical posts 349 . 351 one, which is attached to the inner and outer plates 318 . 320 of the quadrant 314 are trained. A first end of a coil spring 376 is on the second cylindrical post 351 attached, and an opening 375 the outer plate 320 is for attaching a second end of the spring 376 intended. The spring 376 clamps the second tooth plate 327 in a first direction of rotation in rotation around a cam surface 372 to the blocking element 322 harness that in turn to the corner 338 to and against the first side surface 332 of the arm 312 is pushed. In this position the quadrant 314 in a first upright position with respect to the arm 312 held. The first and the second cylindrical post 349 . 351 enclose storage areas and are by means of openings 353 . 355 that in the inner and outer plates 318 . 320 are trained. During the present invention cylindrical posts 349 . 351 includes that in the second tooth plate 327 are formed, it is provided that the cylindrical post 349 . 351 could be separate elements attached to the second tooth plate 327 are attached in a suitable manner, which is to be regarded as being within the scope of the invention. The reaction arm 345 closes an engagement surface 357 one that with the cam plate 324 while operating the adjustment mechanism 310 interacts.

The cam plate 324 has a mounting opening 358 that penetrates this, as well as a first arm 361 with a cam surface 372 and a second arm 363 with an engagement surface 365 to interact with the second tooth plate 327 while operating the adjustment mechanism 310 , A cross element 378 has cylindrical extensions 380 . 382 on that in openings 384 respectively. 386 on the inner and outer plate 318 . 320 are held. The cross element 378 contacts a surface 339 of the arm 312 to reverse the quadrant 314 in relation to the arm 312 to prevent.

The blocking element 322 is a wedge-shaped element with an arcuate surface 388 at a wide end to interact with the cam surface 372 the cam plate 324 , and also has a slot 390 on, which is provided at a narrow end. The slot 390 is trained in ratchet teeth 326 of the arm 312 intervene to the quadrant 314 in relation to the arm 312 to block. ribs 392 . 394 extend from surfaces 396 . 398 of the blocking element 322 from vertical. Ribs 392 . 394 are in slots 3100 . 3102 of the inner and outer plates 318 respectively. 320 slidably added so that the blocking element 322 can slide in between. The blocking element 322 slides in the slots 3100 . 3102 when it is between the arm 312 and the cam plate 324 is applied. The cam plate 324 acts on the curved surface 388 to the blocking element 322 against the arm 312 pretension.

With further reference to the 8th and 9 is now the operation of the adjustment mechanism 310 described in detail. In the first preferred embodiment, the adjustment mechanism allows it 310 that the quadrant 314 forward in relation to the arm 312 pivoted and blocked in a plurality of forward inclined positions. Around the quadrant 314 Folding forward will exert a force on the operating arm 333 the first tooth plate 325 exercised. The force exerted causes the tooth plate 325 twisted, which subsequently the second tooth plate 327 against the bias of the spring 376 is twisted. The rotation of the second tooth plate 327 gives the engagement surface 371 of the reaction arm 345 from the first arm 361 the cam plate 324 free. Another rotation of the second tooth plate 327 causes the reaction arm 345 against the second arm 363 the cam plate 324 running. An engagement of the second tooth plate 327 and the second arm 363 the cam plate 324 causes the cam plate 324 what the cam surface is rotated 372 to slide along and to loosen the arcuate surface 388 from the blocking element 322 forces. So the ribs are 392 . 394 of the blocking element 322 free in the slots 3100 . 3102 the inner and outer mounting plates 318 . 320 to slide while the blocking element 322 from a retracted position next to the first side surface 332 to a raised position on the top surface 334 the shoulder 330 emotional. More specifically, the blocking element 322 between the first side surface 332 of the arm 312 and the slots 3100 . 3102 trapped while the cam plate 324 rotates. If the cam surface 372 from the blocking engagement with the blocking element 322 is moved out, is a movement of the blocking element 322 not hindered upwards. while the quadrant 314 turns, push through the slots 3100 . 3102 the inner and outer mounting plates 318 . 320 walls defined the blocking element 322 inside the slots 3100 . 3102 up until the blocking element 322 on the top surface 334 slides. Another turn of the quadrant 314 forward causes the blocking element 322 along the top surface 334 slides in as best 8th you can see. Is the blocking element 322 once on the top surface 334 , the first tooth plate 325 be released, causing the spring 376 again the second tooth plate 327 in the first direction of rotation, which leads to the fact that the first tooth plate 325 twisted and also the tooth plate 324 from engagement with the blocking element 322 releases. The cam surface 372 again clamps the blocking element 322 inside the slots 3100 . 3102 before to the blocking element 322 against the top surface 334 to press.

Has the quadrant 314 turned sufficiently forward, the blocking element slides 322 from the top surface 334 away and on the ratchet area 316 , As a result of the force from the cam plate 324 engages the blocking element 322 directly in the first ratchet tooth 326 one, making the quadrant 314 in a first forward inclined position with respect to the arm 312 is held.

A plurality of alternative forward blocking positions can be achieved by turning the first tooth plate 325 is pressed to the arcuate surface 388 of the blocking element 322 to solve. Once released, the blocking element is 322 along the ratchet tooth section 316 movable until a desired position has been taken. After reaching a desired position, the first tooth plate 325 released, which again the blocking element 322 to engage with a specific tooth 326 of the ratchet tooth section 316 is biased.

Around the quadrant 314 in an upright position in relation to the arm 312 As a result, the first tooth plate 325 is rotated again, causing the second tooth plate to rotate 327 against the biasing force of the spring 376 rotates, causing the cam plate 324 rotates so that the cam plate 324 from the blocking element 322 solves. While the quadrant 314 rotates backwards, the blocking element moves 322 from a retracted position next to the second side surface 336 to a raised position on the top surface 334 the shoulder 330 , In particular, the blocking element 322 between the second side surface 336 of the arm 312 and the slots 3100 . 3102 included until the blocking element 322 on the top surface 334 of the arm 312 slides. The blocking element is located 322 once on the top surface 334 , the tooth plate 325 be released with the spring 376 again the second tooth plate 327 preloads in the first direction of rotation, which allows the first tooth plate to come out 325 rotates and what is also a release of the cam plate 324 causes. The cam surface thus tensions 372 the blocking element 322 inside the slots 3100 . 3102 before to the blocking element 322 against the top surface 334 to press. After the quadrant 314 is sufficiently turned back, the cam plate is preloaded 324 that the blocking element 322 inside the slots 3100 . 3102 to the corner 338 to and against the first side surface 332 moves, causing the quadrant 314 is blocked in an upright position.

The gear arrangement 323 improves the operation of the adjustment mechanism 310 by the force required to release the cam plate 124 from the blocking element 322 is effectively reduced. Furthermore, the gear arrangement prevents 323 as opposed to applying a force directly to the cam 324 even any jerky or jerky movement after releasing the blocking element 322 from the first side surface 332 of the arm 312 by actuating the cam 324 by moving the first and second tooth plates 325 . 327 ,

With reference to the 10 and 11 Fig. 4 is a fourth preferred embodiment of the present invention as an adjustment mechanism 410 designated. The adjustment mechanism 410 generally has an arm arrangement 413 on that pivotable on a quadrant 414 is attached and between inner and outer plates 418 . 420 is held. The quadrant 414 becomes selective with respect to the arm arrangement by a blocking element 422 blocked that selectively with a cam plate 424 interacts.

The arm arrangement 413 has an arm 412 , a connecting link 415 and a sector plate 417 on. A first end of the arm 412 closes a first corner 419 , a second corner 411 , a third corner 421 , a first side surface 423 , a second side surface 425 , a third side surface 427 , an upper surface 429 and an arcuate surface 431 on. The first face 423 , the second side surface 425 and the top surface 429 form a blocking shoulder. The first corner 419 is at the base of the first face 423 opposite the top surface 429 educated. The second corner 419 is at the intersection of the second side surface 425 and the arcuate surface 431 educated. The arched surface 431 is between the second corner 411 and the third corner 421 educated. The third corner 423 is at the intersection of the third page 427 and the arcuate surface 431 educated. A second end of the arm 412 closes a first opening 497 one to form a pivot axis and a second opening 428 for connection with a linear adjustment mechanism.

The arm 412 is between the inner and outer plates 418 . 420 on a first pivot 440 arranged and held in rotation. The first pivot 440 is in an opening 442 of the arm 412 added. The first pivot 440 has first and second cylindrical extensions 444 . 446 on that in first and second openings 448 respectively. 450 are recorded and held. The first pivot 440 also has a support bearing 452 on, which extends radially and between the first and second cylindrical extensions 444 . 446 is arranged. The support camp 452 has a storage area 454 on that in the opening 442 is added to the quadrant 414 in relation to the arm 412 keep rotatable. The sector plate 417 is also rotatable on the first pivot 440 held and is between the arm 412 and the inner plate 418 arranged.

The sector plate 417 has an opening 433 , a blocking element recess 435 , a first corner 437 , a second corner 439 , a first page 441 , a second page 443 , a third page 445 , an arcuate surface 447 and an upper surface 449 on. The first corner 437 is at the intersection of the arcuate surface 447 and the first page 441 educated. The second corner 439 is at the base of the blocking element recess 435 through the intersection of the second side 443 and the third page 445 educated. The first page 441 , the second page 443 and the top surface 449 form a blocking shoulder. The first pivot 440 is in the opening 433 added to the sector plate 417 keep rotatable. An opening is at an opposite end of the sector plate 417 from the blocking element recess 435 formed the connecting link 415 to attach to it. The link 415 has a first end and a second end with openings provided therein 451 . 453 on. The first end of the link 415 is rotatable on the anchor plate 417 attached, and the second end of the link 417 is rotatably attached to a fixed outer structure (not shown).

The cam plate 422 is between the inner and outer mounting plates 418 . 420 arranged and is rotatable between them by means of a second pivot 460 kept in a central opening 462 the cam plate 422 is included. The second pivot 460 has first and second cylindrical extensions 464 . 466 on that in openings 468 . 470 of the inner and outer plates 418 respectively. 420 are recorded and held. The second pivot 460 also has a radially extending support bearing 473 on that's a storage area 477 having. The second pivot 460 is in the opening 462 of the arm 412 added, causing the second pivot 460 the quadrant 414 on the storage area 477 holds rotatable.

One end of the cam plate 424 has a cam surface 472 on. A second end of the cam plate 424 has an opening 474 for attaching a first end of a spring 476 on, and the inner plate 418 has an opening 475 to attach a second end of the spring 476 on. The spring 476 tightens the cam plate 424 in a first direction of rotation in rotation, whereby the cam surface 472 against the blocking element 422 is biased, which in turn is in the corner and against the first side surface of the arm 412 is pushed. The quadrant is in this position 414 in a first upright position with respect to the arm 412 held. A cross element 478 has cylindrical extensions 480 . 482 on that in openings 484 respectively. 486 of the inner and outer plates 418 . 420 are held. The cross element 478 contacts a surface of the arm 412 to reverse the quadrant 414 in relation to the arm 412 to prevent.

The blocking element 422 is a wedge-shaped element that has an arcuate surface 488 at one wide end to match the cam surface 472 the cam plate 424 interact, and has a vertex 490 on, which is provided at a narrow end. The crown 490 is designed to engage the blocking element recess of the sector plate around the quadrant 414 in relation to the arm 412 to block. ribs 492 . 494 extend perpendicularly from surfaces 496 . 498 of the blocking element 422 out. Ribs 492 . 494 are slidable within slots 4100 . 4102 of the inner and outer plates 418 respectively. 420 added, which allows the blocking element 422 slides in between. The blocking element 422 slides in the slots 4100 . 4102 while it is between the arm assembly and the cam plate 424 is included. The cam plate 424 acts on the curved surface 488 to the blocking element 422 against the arm 412 pretension.

With further reference to the 12 and 13 is now the operation of the adjustment mechanism 410 described in detail. In a preferred fourth embodiment, the adjustment mechanism allows it 410 that the quadrant 414 forward in relation to the arm 412 is pivoted and blocked in a horizontal or flat folded position. Around the quadrant 414 To fold forward, the cam plate 424 against the biasing force of the spring 476 rotated, creating the cam surface 472 for sliding along and for detaching from the curved surface 488 the blocking element 422 is forced. So the ribs are 492 . 494 of the blocking element 422 free in the slots 4100 . 4102 the inner and outer housing plates 418 . 420 to slide while the blocking element 422 from a retracted position next to the first side surface 423 to a raised position on the top surface 429 of the arm 412 emotional. In particular, the blocking element 422 between the first side surface 423 of the arm 412 and the slots 4100 . 4102 trapped while the cam plate 424 against the bias of the spring 476 emotional. While the cam surface 472 from the blocking engagement with the blocking element 422 is a movement of the blocking element 422 not hindered upwards. During the quadrant 414 is rotated, the walls press the slots 4100 . 4102 the inner and outer mounting plates 418 . 420 define the blocking element 422 inside the slots 4100 . 4102 up until the blocking element 422 on the top surface 429 of the arm 412 slides. Another turn of the quadrant 414 to the front causes the blocking element 422 , along the top surface of the arm 412 to slide and finally from the top surface 429 of the arm 412 to the top surface 449 the sector plate 417 to get. The blocking element is located 422 on the top surface 429 . 449 either of the arm 412 or the sector plate 417 , the cam plate 424 be released, causing the spring 476 again the cam plate 424 biased in the first direction of rotation. The cam surface 472 tensions the blocking element 422 again within the slots 4100 . 4102 before, causing the blocking element 422 against the top surface 429 . 449 either of the arm 412 or the sector plate 417 or pressed against both, depending on the forward position of the quadrant 414 at the time the cam plate 424 is released.

Has the quadrant 414 sufficient after rotated at the front, the blocking element slides 422 from the top surface 449 the sector plate 417 away and into the blocking element recess 435 , As a result of the preload on the cam plate 424 engages the blocking element 422 immediately into the blocking element recess 435 one, making the back surface 485 of the quadrant 414 is held in a relatively horizontal or flat folded position.

The point on the sector plate 417 on which the blocking element 422 from the top surface 429 of the arm 412 to the top surface 449 the sector plate 417 is achieved by the initial relative relationship between the arm 412 and the quadrant 414 certainly. As best in 12 As shown, the relative angle X of the arm to a horizontal surface determines the angle Y between the arm 412 and the quadrant 414 , and consequently the distance that the blocking element 422 over the sector plate 417 must travel before the blocking element recess 435 reached. Especially when the arm 412 is rotated (as a result of an adjustment), the connecting member rotates 415 the sector plate 417 such that the orientation of the blocking element 422 in terms of horizontal area remains the same to cause the back area 485 of the quadrant 414 stays horizontal. However, the relative position of the link changes 415 to the arm 412 , and the relative position of the sector plate 417 both to the arm 412 to the quadrant as well 414 changes while the arm 412 is rotated. For example, if the initial angle Y between the arm 412 and the floor area 495 of the quadrant 414 increases, the distance between the second side decreases 423 of the arm 412 and the second page 443 the sector plate 417 as in the 12 and 13 is designated with Q. This is the way around the blocking element 422 over the top surface 449 the sector plate 417 must move to the blocking element recess 435 The greater the initial angle Y (or the smaller the angle X) between the arm, the shorter the distance 412 and the floor area 495 of the quadrant 414 is. The relative rotation of the sector plate 417 and the arm 412 allowed as a result of the connection via the connecting link 415 that the relative position of the sector plate 417 to the quadrant 414 changed to reflect the rear surface 485 of the quadrant in a relatively horizontal position.

Around the quadrant 414 in an upright position in relation to the arm 412 moving back becomes the cam plate 424 again against the biasing force of the spring 476 rotated to the cam plate 424 from the blocking element 422 release. While the quadrant 414 rotates backwards, the blocking element moves 422 from a retracted position in the blocking element recess 435 to a raised position on the top surface 449 the sector plate 417 , In particular, the blocking element 422 in the blocking element recess 435 and the slots 4100 . 4102 held until the blocking element 422 on the top surface 449 the sector plate 417 slides. Is the blocking element 422 once on the top surface 449 . 429 either the sector plate 417 or the arm 412 , the cam plate 424 released, causing the spring 476 in turn the cam plate 424 in the first direction of rotation. The cam surface thus tensions 472 the blocking element 422 inside the slots 4100 . 4102 before to the blocking element 422 against the top surface 449 . 429 either the sector plate 417 or the arm 412 to act upon. After the quadrant 414 is rotated sufficiently backwards, the blocking element 422 from the top surface 449 the sector plate 417 to the top surface 429 of the arm 412 , The relative path Q that the blocking element 422 must cover before it from the top surface 449 the sector plate 417 to the top surface 429 of the arm 412 depends on the initial angle Y between the arm 412 and the quadrant 414 as discussed previously. After the quadrant 414 has been turned sufficiently backwards, causes the cam plate to be preloaded 424 the blocking element 422 , inside the slots 4100 . 4102 to the first corner 419 of the arm 412 and against the first surface 423 to slide, causing the quadrant 414 is blocked in an upright position.

With special reference to the 14 and 15 Fig. 5 is a fifth embodiment of the present invention as an adjusting mechanism 510 designated. The adjustment mechanism 510 generally has an arm arrangement 513 on that on a quadrant 514 held pivotable and between inner and outer plates 518 . 520 is included. The quadrant 514 is through a blocking element 522 , selectively with a cam plate 524 cooperates that by means of a gear arrangement 523 is operated selectively with respect to the arm arrangement 513 blocked.

The gear arrangement 523 closes the cam plate 524 one that rotates between the inner and outer plates 518 . 520 is held, as well as first and second tooth plates 525 . 527 , each rotatable between the inner and outer plates 518 . 520 are held. The cam plate 524 is rotatable by a second pivot 556 kept in a mounting hole 558 the cam plate 524 is included. The second pivot 556 has first and second cylindrical extensions 560 . 562 on that in first and second openings 564 respectively. 564 . 566 are recorded and held. The second pivot 556 also has a support bearing 568 on, which extends radially and between the first and second cylindrical extensions 560 . 562 is arranged. The support camp 568 also has a storage area 570 on that in the opening 558 is held to the cam plate 524 record rotatable.

The first tooth plate 525 shows a center len section 531 and an operating arm 533 and a cable entry opening 574 for connection with a cable (not shown). The first tooth plate 525 also has a series of teeth 535 on that is radial from the central area 531 off for tooth-like engagement in the second tooth plate 527 extend as discussed below. The central area 531 also has a cylindrical post formed thereon 537 on for the purpose of rotating attachment to the inner plate 520 of the quadrant 514 , The cylindrical post 537 has a bearing surface and is in an opening 541 kept in the inner plate 518 is trained. Although the present invention has a cylindrical post 537 includes that within the first tooth plate 525 is formed, it is provided that the cylindrical post 537 could be formed as a separate element that on the first tooth plate 525 is fastened by suitable means, which is to be regarded as being within the scope of the invention.

The second tooth plate 537 has a central section 543 and a reaction arm 545 on which is an engagement surface 571 has. The central area 543 has a series of teeth 547 extending radially therefrom for tooth engagement with the first tooth plate 525 as described below. The central area 543 also has first and second cylindrical posts formed therein 549 . 551 on, for rotational attachment to the inner and outer plates 518 . 520 of the quadrant 514 , A first end of a coil spring 576 is on the second cylindrical post 551 attached, and the outer plate 520 has an opening 575 for attaching a second end of the spring 576 on. The spring 576 clamps the second tooth plate 527 in a first direction of rotation, which in turn is the first tooth plate 525 drives in a second direction of rotation, creating a cam surface 572 to the blocking element 522 is in turn turned to a corner 538 and against a first side surface 532 of the arm 512 is pushed. The quadrant is in this position 514 in a first upright position with respect to the arm 512 held. The first and second cylindrical posts 549 . 551 have storage areas in openings 553 . 555 are added to the inner and outer plates 518 . 520 are provided. During the present invention cylindrical posts 549 . 551 includes that in the second tooth plate 527 are formed, it is provided that the cylindrical post 549 . 551 as separate elements on the second tooth plate 527 could be attached by suitable means, which is to be regarded as being within the scope of the invention. The reaction arm 545 has an engagement surface 557 to interact with the cam plate 524 while operating the adjustment mechanism 510 on.

The cam plate 524 has the mounting hole 558 on which it is permeated, a first arm 561 which is a cam surface 572 has, and a second arm 563 which is an engagement surface 565 to interact with the second tooth plate 527 during activation of the adjustment mechanism 510 having. A cross element 578 has cylindrical extensions 580 . 582 on that in openings 584 respectively. 586 on the inner and outer plate 518 . 520 are included. The cross element 578 contacts a surface 579 of the arm 512 to reverse the quadrant 514 in relation to the arm 512 to prevent.

The blocking element 522 is a wedge-shaped element that has an arcuate surface 588 at one wide end to match the cam surface 572 the cam plate 524 interact, as well as a vertex 590 which is provided at a narrow end. The crown 590 is designed to engage the blocking element recess around the quadrant 514 in relation to the arm 512 set. ribs 592 . 594 extend perpendicularly from the surfaces 596 . 598 of the blocking element 522 , Ribs 592 . 594 are slidable within slots 5100 . 5102 of the inner and outer plates 518 respectively. 520 added, which allows the blocking element 522 shifts in between. The blocking element 522 slides in the slots 5100 . 5102 while it is between the arm 512 and the cam plate 524 is applied. The cam plate 524 acts on the curved surface 588 to the blocking element 522 against the arm 512 and the sector plate 517 pretension.

The arm arrangement 513 has an arm 512 , a connecting link 515 and a sector plate 517 on. A first end of the arm has a first corner 519 , a second corner 511 and a third corner 521 on, a first. side surface 523 , a second side surface 525 , a third side surface 527 an upper surface 529 and an arcuate surface 531 The first face 523 , the second side surface 525 and the top surface 529 form a blocking shoulder. The first corner 519 is at the base of the first page 523 opposite the top surface 529 educated. The second corner 511 is at the intersection of the second side surface 525 and the arcuate surface 531 educated. The arched surface 531 is between the second corner 511 and the third corner 521 educated. The third corner 523 is at the intersection of the third page 527 and the arcuate surface 531 educated. The second end of the arm 512 closes a first opening 597 one to form a pivot axis and a second opening 528 for connection with a linear adjustment mechanism.

The arm 512 is between the inner and outer plates 518 . 520 on a first pivot 540 rotatably received and held. The first pivot 540 is in an opening 542 of the arm 512 added. The first pivot 540 has first and second cylindrical extensions 544 . 546 on that in first and second openings 548 . 550 are recorded and held. The first pivot 540 also has a support bearing 552 on, which extends radially and between the first and second cylindrical extensions 544 . 546 is held. The support camp 552 has a storage area 554 on that in the opening 542 for rotating storage of the quadrant 514 in relation to the arm 512 is held. The sector plate is also rotatable from the first pivot 540 added that between the arm 512 and the inner plate 518 is arranged.

The sector plate 517 has an opening 600 a blocking element recess 602 , a first corner 604 , a second corner 605 , a first page 606 , a second page 608 , a third page 610 an arcuate surface 612 and an upper surface 614 on. The first page 606 , the second page 608 and the top surface 614 form a blocking shoulder. The first corner 604 is at the intersection of the arcuate surface 612 and the first page 606 educated. The second corner 603 is at the base of the blocking element recess 602 from the intersection of the second side 608 and the third page. The first pivot 540 is in the opening 600 added to the sector plate 517 record rotatable. At an opposite end of the sector plate 517 is an opening from the blocking element recess 602 formed to attach the connector 515 take. The link 515 has a first end and a second end in which openings 616 . 618 are formed. The first end of the link 515 is rotatable on the sector plate 517 added, and the second end of the link 517 is rotatably mounted on a fixed external structure (not shown).

With special reference to the 14 and 15 is now the operation of the adjustment mechanism 510 described in detail. In a fifth preferred embodiment, the adjustment mechanism enables this 510 that the quadrant 514 in relation to the arm 512 swung forward and locked in a horizontal or flat folded position. Around the quadrant 514 Swinging forward will exert a force on the operating arm 533 the first tooth plate 525 exercised. The applied force causes the first tooth plate to move 525 which subsequently turns the second tooth plate 527 against the bias of the spring 576 rotates. The rotation of the second tooth plate 527 gives the engagement surface 571 of the reaction arm 545 from the first arm 561 the cam plate 524 free. Another rotation of the second tooth plate 527 causes the reaction arm 545 , against the second arm 563 the cam plate 524 to act. The engagement of the second tooth plate 527 and the second arm 563 the cam plate 524 causes the cam plate 524 for rotation what the cam surface 572 induces itself from the arcuate surface 588 the blocking element 522 to solve. So the ribs are 592 . 594 the blocking element 522 free in the slots 5100 . 5102 the inner and outer mounting plates 518 . 520 to slide while the blocking element 522 from a retracted position next to the first side surface 523 to a raised position on the top surface 529 of the arm 512 emotional.

In particular, the blocking element 522 between the first side surface 523 of the arm 512 and the slots 5100 . 5102 included when the cam plate 524 against the bias of the spring 576 twisted. While the cam surface 572 from the blocking engagement with the blocking element 522 is moved is the movement of the blocking element 522 not hindered upwards. While the quadrant 514 turns, press the walls that the slots 5100 . 5102 the inner and outer mounting plates 518 . 520 define the blocking element 522 inside the slots 5100 . 5102 up until the blocking element 522 on the top surface 529 of the arm 512 slides. Another forward rotation of the quadrant 514 causes the blocking element 522 , along the top surface 529 of the arm 512 to slide and ultimately from the top surface 529 of the arm 512 to the top surface 5 the sector plate 517 to arrive, a part of which is covered. Is the blocking element 522 once on the top surface 529 . 614 either of the arm 512 or the sector plate 517 , the first tooth plate 525 be released with the spring 576 again the second tooth plate 527 preloads in the first direction of rotation, which allows the first tooth plate to come out 525 rotates, and what further causes the cam plate 524 is released. The cam surface 572 again clamps the blocking element 522 inside the slots 5100 . 5102 pushes the blocking element 522 against the top surface 529 . 614 either of the arm 512 or the sector plate 517 or both, depending on the forward movement of the quadrant 514 at the time when the first tooth plate 525 is released.

Has the quadrant 514 turned sufficiently forward, the blocking element slides 522 from the top surface 614 the sector plate 517 away and into the blocking element recess 602 , As a result of the force of the cam plate 524 engages the blocking element 522 directly into the blocking element recess, creating the rear surface 585 of the quadrant 514 is held in a relatively horizontal or flat folded position.

The point on the sector plate 517 on which the blocking element 522 from the top surface 529 of the arm 512 to the top surface 614 the sector plate 517 comes from the relative initial relationship between the arm 512 and the quadrant 514 certainly. The relative angle X (cf. 12 and 13 ) of the arm 512 to a horizontal surface determines the angle Y (cf. 12 and 13 ) between the arm 512 and the quadrant 514 , and consequently the distance Q (vg1. 12 and 13 ) that the blocking element 522 over the sector plate 517 must travel before it blocks the blocking element 602 reached. If the arm 512 is rotated, the link rotates 515 the sector plate 517 such that the orientation of the blocking element 522 with respect to the horizontal area remains constant to allow the rear surface 585 of the quadrant 514 stays horizontal. However, the relative position of the link changes 515 in relation to the arm 512 , and thus the relative position of the sector plate also changes 517 in relation to the arm 512 when the arm 512 is rotated. For example, if the initial angle Y between the arm 512 and the floor area 595 of the quadrant 514 between the second page 525 of the arm 512 enlarged, so the second page takes 608 the sector plate 517 from. The larger the initial angle Y between the arm 512 and the floor area 595 of the quadrant 514 thus, the shorter the distance the blocking element is 522 over the top surface of the sector plate 517 must travel to the blocking element recess 602 to reach. The relative rotation of the sector plate 517 and the arm 512 allows it as a result of the connecting member 15 that the relative position of the sector plate 517 to the quadrant 514 changed to reflect the rear surface 585 of the quadrant 514 to keep in a relatively horizontal position.

Around the quadrant 514 from an upright position relative to the arm 512 moving back becomes the first tooth plate 525 rotated again, creating the second tooth plate 527 is caused to act against the biasing force of the spring 576 to rotate what the cam plate 524 caused to rotate so that the cam plate 524 from the blocking element 522 solves. While the quadrant 514 rotates backwards, the blocking element moves 522 from a retracted position in the blocking element recess 602 to a raised position on the top surface 614 the sector plate 517 , In particular, the blocking element 522 in the blocking element recess 602 and the slots 5100 . 5102 engaged until the blocking element 522 on the top surface 614 the sector plate 517 slides. Is the blocking element 522 once on the top surface 614 . 529 either the sector plate 517 or the arm 512 , so the first tooth plate 525 be released, causing the spring 576 again the second tooth plate 527 preloads in the first direction of rotation, which allows the first tooth plate to come out 525 turns, and so does the cam plate 524 rotates. The cam plate is thus tensioned 572 again the blocking element 522 inside the slots 5100 . 5102 before to the blocking element 522 against the top surface 614 . 529 either the sector plate 517 or the arm 512 to urge.

After the quadrant 514 has turned sufficiently backwards, the blocking element arrives 522 from the top surface 614 the sector plate 517 to the top surface 529 of the arm 512 , The relative distance that the blocking element 522 must cover before it from the top surface 614 the sector plate 517 on the top surface 529 of the arm 512 depends on the initial angle Y between the arm 512 and the quadrant 514 as discussed previously. After the quadrant 514 has been turned back sufficiently, the cam plate is preloaded 524 that the blocking element 522 inside the slots 5100 . 5102 up to the first corner 519 of the arm 512 and against the first side surface 523 shifts, causing the quadrant 514 is blocked in an upright position.

It is understood that the third, fourth and fifth versions of the adjustment mechanism 310 . 410 . 510 can be adapted for use in a seating arrangement in a similar manner to that for the seating arrangement 200 according to the 6a . 6b . 6c and 7 has been described. A detailed description is therefore not given. Basically, the adjustment mechanism makes it possible 310 an operator, the blocking element 322 easier via a gear reduction using the first and second tooth plates 325 . 327 to release the seat back 202 in terms of seat 204 to fold into one of a number of forward folded positions. The adjustment mechanism 410 allows the seat back 202 remains in a constant, forward-folded, horizontal position regardless of an adjustment position of the adjustment mechanism 410 in terms of seat 204 , The adjustment mechanism 510 combines the features of the adjustment mechanisms 310 . 410 to make it easier to release the blocking element 522 and allow maintaining a constant forward folded horizontal position regardless of an adjustment position of the adjustment mechanism 510 in terms of seat 204 ,

While the invention described in the description and in the drawing was explained with reference to a preferred embodiment, it is understood that the professionals. can make numerous changes, and that equivalents for elements of which can be substituted without to depart from the scope of the invention as defined in the claims is. Furthermore, numerous Modifications are made to reflect the teaching of the invention special situation or to adapt to a material without the essential Frame to deviate from the same. That is why it is intended that the invention is not limited by the particular embodiment that in the drawing is shown and in the description as the best Mode that is currently used to execute the Invention is conceivable, rather the invention is intended to be all embodiments include falling within the scope of the appended claims.

Summary

An adjustment mechanism ( 10 ) for a seat back to selectively position a seat assembly in various forward folded positions with respect to a seat and to block in at least one forward position. The arrangement has a quadrant ( 14 ) on a cam plate ( 24 ) that holds with a blocking element ( 22 ) interacts around an arm ( 12 ) which rotatably receives the quadrant. The arm ( 12 ) defines a first blocking shoulder and rotatably holds a sector plate which defines a second blocking shoulder with a blocking recess. The blocking element ( 22 ) interacts selectively with at least the first or the second blocking shoulder and preferably has a sequence of locking teeth ( 26 ) to selectively enter the blocking element ( 22 ) intervene to lock the seat back in a selected, forward folded position. Alternatively, the arm ( 12 ) a corner area to block the seat back in a single forward folded position. A gear arrangement is preferably provided and operatively connected to the quadrant in order to move the cam plate ( 24 ) to operate ( 1 ).

Claims (39)

An adjustment mechanism with: a quadrant; one Arm that rotates the quadrant; a blocking element, which is slidably supported by the quadrant to the arm intervene, the quadrant being selectively in a plurality of Angular positions with respect to the arm is blocked and one Cam plate rotatably received on the quadrant position the blocking element in relation to the arm. The adjustment mechanism of claim 1, further comprising a biasing element to bias the cam plate against the arm, whereby the blocking element is biased against the arm to the Quadrants in one of a plurality of angular positions to block in relation to the arm. The adjustment mechanism according to claim 1, wherein the cam plate has a cam surface has, which cooperates with the blocking element to the blocking element bendable. The adjustment mechanism according to claim 1, wherein the arm has a plurality of locking teeth for has selective interaction with the blocking element to the Quadrants in one of a plurality of angular positions to selectively block in relation to the arm. The adjustment mechanism according to claim 4, wherein the arm has a corner area for blocking the blocking element, whereby the quadrant is positioned substantially parallel to the arm is. The adjustment mechanism according to claim 1, wherein the quadrant has an inner and an outer receiving plate, which keep the cam plate rotatable and the blocking element displaceable take up. The adjustment mechanism according to claim 1, wherein the blocking element is a wedge-shaped Body is the one arched surface has at a wide end for cooperation with the cam plate, and a slit at a narrow end to interact with the arm. An adjustable seating arrangement with: a seat; one Seat back that swivels with the seat over one Adjustment mechanism is connected and a forward folding Mechanism that is coupled to the seat back to the seat back in a plurality of forward folded positions in Position adjustable in relation to the seat. The adjustable seat assembly according to claim 8, the forward folding mechanism has: a quadrant that supports the seat back holds; one Arm connected to the seat and rotatably holding the quadrant; a Cam plate which is rotatably supported by the quadrant and on Blocking element which is slidably supported by the quadrant, around the seat back in one of a plurality of folded forward Block positions related to the seat. The adjustable seat assembly of claim 9 further comprising a biasing member to the cam plate to the Preload arm to urge the blocking member against the arm, causing the seat back in one of a plurality of folded forward Positions in relation to the seat is blocked. The adjustable seat of claim 9, wherein the Cam plate a cam surface has, which cooperates with the blocking element to the blocking element to slide against the arm. The adjustable seat of claim 9, wherein the arm has a plurality of ratchet teeth points to selectively engage the blocking member to selectively block the seat back in one of a plurality of forward folded positions with respect to the seat. The adjustable seat of claim 12, wherein the arm also has a corner area around the blocking element block, causing the seat back to be substantially perpendicular the seat is positioned. An adjustment mechanism for a vehicle seat with: one quadrant; an arm that rotates the quadrant; one Blocking element that is slidably supported by the quadrant and selectively interacts with the arm to create the quadrant in one Majority of forward block folded positions with respect to the arm; one Cam plate that is rotatably supported by the quadrant bias the blocking member to engage the arm and one Gear assembly rotatably supported by the quadrant to operate the cam plate. The adjustment mechanism of claim 14, further comprising a biasing element to bias the cam plate towards the arm, whereby the blocking element is biased to engage the arm is to block the quadrant in relation to the arm. The adjustment mechanism of claim 14, wherein the cam plate has a cam surface has, which selectively engages in the blocking element to the Preloading the blocking element. The adjustment mechanism of claim 14, wherein the gear arrangement has a first toothed plate which is rotatable from the quadrant, and a second tooth plate in meshing engagement with the first tooth plate and in a working connection with the cam plate to selectively rotate the cam plate offset. An adjustable seating arrangement with: one Seat and an adjustment mechanism related to a seat back pivots on the seat, the adjustment mechanism has the following: a quadrant that the seat back on increases; an arm that is working. is connected to the seat and rotatably receives the quadrant; a blocking element that is held by the quadrant and selectively with the arm cooperates to the seat back in a plurality of after forward block folded positions with respect to the seat; a Cam plate that is rotatably supported by the quadrant selectively bias the blocking member to engage the arm and a gear arrangement by the quadrant for actuating the Cam plate is rotatably held. The adjustable seat assembly of claim 18 further comprising a biasing member for engaging the cam plate to bias with the blocking member for further engagement with the arm, which causes the seat back in one of the forward folded positions in Regarding the seat is blocked. The adjustable seat assembly of claim 18 in which the cam plate has a cam surface which is connected to the blocking element interacts selectively to move the blocking element on the arm pretension. The adjustable seat assembly of claim 18 in which the gear arrangement has a first tooth plate which is rotatably supported by the quadrant, and a second tooth plate in dental intervention with the first tooth plate and in working connection with the cam plate in order selectively rotating the cam plate. A seat adjustment mechanism, with one arm, which defines a first blocking shoulder; a sector plate, which is rotatably supported by the arm and a second blocking shoulder defined with a blocking recess; a blocking element, selectively in at least one of the first and second blocking shoulders engages; a quadrant that is rotatably received by the arm and the blocking element slidably holds the quadrant in one blocking the first and second positions with respect to the arm; a Cam plate which is rotatably received on the quadrant, to interact selectively with the blocking element, around the quadrant to block in one of the first and second positions, wherein the blocking element in the first position against the first blocking shoulder is biased and the blocking element in the second position is biased against the blocking recess. The seat adjustment mechanism of claim 22, which the blocking element in both the first and the second Blocking shoulder during the rotation of the quadrant between the first and second positions intervenes. The seat adjustment mechanism according to claim 22, further comprising a biasing member for biasing the cam plate to engage the blocking member to selectively block the quadrant in the horizontal position with respect to the arm. The seat adjustment mechanism of claim 22, which the cam plate has a cam surface that is selective cooperates with the blocking element to the blocking element to Sliding engagement with either the arm or the sector plate pretension. The seat adjustment mechanism of claim 22, further comprising a connecting element, the arm and the sector plate connects work-wise, around a constant relative position between the sector plate and to enable the quadrant. The seat adjustment mechanism of claim 22, which the quadrant inner and outer receiving plates has, which keep the cam plate rotatable and the blocking element can be moved. The seat adjustment mechanism of claim 22, further comprising a gear assembly rotatable by the quadrant is held to operate the cam plate. The seat adjustment mechanism of claim 28, which the gear arrangement has a first tooth plate, which the quadrant is held rotatable, and a second tooth plate in dental intervention with the first tooth plate and in working connection with the cam plate, to selectively rotate the cam plate. The seat adjustment mechanism of claim 28, further comprising a connecting element, the arm and the sector plate connects work-wise, around a constant relative position between the sector plate and to allow the quadrant. The adjustment mechanism of claim 28, further comprising a biasing element to engage the cam plate preload with the blocking element to keep the quadrant in the horizontal position to selectively block in relation to the arm. The adjustment mechanism of claim 28, wherein the cam plate has a cam surface has, which cooperates selectively with the blocking element to the blocking element slidably engaged with either the Arm or the sector plate. An adjustable seating arrangement with: one Seat and an adjustment mechanism that swivels a seat back in relation to the seat, the adjustment mechanism comprising: an arm which defines a first blocking shoulder; a sector plate, which is rotatably supported by the arm and a second blocking shoulder defined, which has a blocking recess; a blocking element, selectively at least in one of the first and second blocking shoulders engages; a quadrant that is rotatably held by the arm and the blocking element is slidable for blocking the quadrant in one of the first and second positions with respect to the arm holds; a Cam plate that is rotatably supported by the quadrant to interact selectively with the blocking element to form the quadrant block in one of the first and second positions, the Blocking element in the first position against the first blocking shoulder is biased, and with the blocking element in the second position is biased into the blocking recess. The adjustable seat assembly of claim 33 where the blocking element during the rotation of the quadrant between the first and second positions engages both in the first and in the second blocking shoulder. The adjustable seat assembly of claim 33 in which the adjustment mechanism also has a gear arrangement, which is rotatably supported by the quadrant around the cam plate to operate. The adjustable seat assembly of claim 35 in which the gear arrangement has a first tooth plate which is rotatably supported by the quadrant, and a second tooth plate in gear-like engagement with the first tooth plate and in working connection with the cam plate, to selectively rotate the cam plate. The adjustable seat assembly of claim 33 which further comprises a connecting element, the arm and the Sector plate connects work-wise, around a constant relative position between the sector plate and to allow the quadrant. The adjustable seat assembly of claim 33 further comprising a biasing member for engaging the cam plate preload with the blocking element to keep the quadrant in a horizontal Selectively block position with respect to the arm. The adjustable seat assembly of claim 33, wherein the cam plate has a cam surface that selectively cooperates with the blocking element to engage the blocking element grip slidably pretension with the arm or the sector plate.