DE102007057095A1 - Adjustment fitting for vehicle seat, has tooth segments possessing same dimensions and molding body, where segments, closing mechanisms or clamping body are pushed into locking position by closing springs in individual spring-loaded manner - Google Patents

Abstract

The fitting has tooth segments (8), which possess same dimensions and molding body, so that loads closed and opened by accelerations are compensated in a reciprocative manner. The tooth segments and a frame (11) are toothed such that tooth center stays at a middle of a tooth gap of a frame in each position of the armature. The tooth segments, closing mechanisms or a clamping body (14') are pushed into a locking position by closing springs (2, 3, 13) in an individual spring-loaded manner. The tooth segments are guided into a guiding pin (10).

Description

The The present invention describes a particularly functionally reliable and finely adjustable adjustable fitting, especially for Vehicle seats, according to the preamble of claim 1.

STATE OF THE ART / DISADVANTAGES:

To adjust backrests, in the vehicle seat are infinitely adjustable seat fittings DE2641583 . DE2660395 . DE3028539 known.

For Infinitely adjustable seat adjusters, there are not many functional principles as is the case, for example, with adjusters with locking positions. These seat fittings also have the disadvantage that they are relatively expensive.

In addition, transfer These adjusters either do not have such large load moments as equal adjustment fittings where toothed Close latches positively or they are bigger and therefore more expensive.

These Infinitely adjustable adjusters can also work Adjust by vibration, so that the backrest position imperceptible slowly migrate to a less favorable position and then from time to time must be corrected again.

Seat adjuster with fixed detent positions as for example DE 2845281 . DE 2927544 . DE 2939729 . DE 2950702 . DE 19928416 or DE 3031182 Known are not adjusted by vibration. However, if charge cubes strike directly into the fitting, very high acceleration forces occur on the components of the locking mechanism. These forces act directly on the locking mechanism and can lead to the opening of the adjuster. Since the survival function of the occupant depends on the closing function in the crash, this is of course particularly disadvantageous. In the case of adjusters with pawls, a false locking may then occur when the tooth heads touch each other at an angle which does not permit complete engagement, but the locking mechanism also does not permit opening. The adjustment fitting can then transmit only a part of the moments occurring in the crash, but the occupant does not notice this because the moments that occur in use are very well supported. Seat adjusters with fixed locking positions are cheaper but not so comfortable adjustable. If the detent is chosen to be very fine, this leads to very small toothings, which can slip over due to expansion in the crash. The fineness of Verstellstufung is thus limited. If the Verstellstufung chosen very coarse and the gears can be larger and are therefore even in component deformations still safe. The comfort is then limited.

In Lean positions between two locking positions lock such Disguise not. The complete closing of the Gearing is also due to tolerance-related tilting of the toothed Components dependent. A finely stepped catch fitting can therefore allow only very limited angular errors. A vehicle But has very rough shell tolerances, complex bolting situations and is also subject to stretching in use.

In a seat system there are usually always several fittings which must open and close synchronously. All synchronization errors can also cause for an incomplete closing, bad closing or poorly opening overall system. By use Lehnendeformationen incurred are a potential threat to the closing function especially with finely toothed pawls.

Seat Adjusters with pawl are not sealed in the range of adjustment. small parts or liquids can therefore so in the locking mechanism get advised and lead to jams or fat can get out exit the stage and stain seats or clothing. In order to a toothing between frame and toothed segment in different Positions can take and at the same time has small adjustment paths must Tooth thickness and tooth width be equal.

Any fine toothing with the same tooth thickness and tooth width, because of the minimum radii in wire EDM, production-related not be arbitrarily deep.

From the longitudinal adjustment rails of Hammerstein EP1316465 is a pin lock known in the lock two each of four pins in a row of holes form-fitting.

At least but a pin engages positively. These four pens have a distance difference to the hole spacing as with a vernier the rail. This ensures that always at least a pin lies exactly in the middle of the hole and thus completely can lock.

It is known adjustment fittings by means of a synchronization rod in sync with opening and closing.

Further is known synchronization errors caused by component tolerances to compensate by compensating bushings in the seat.

TASK

It Therefore, the object of the present invention was a particular functionally reliable and finely adjustable adjustable fitting, especially for vehicle seats. The adjustment fitting should securely lock in any position and thus false locks exclude entirely. The locking mechanism should also be at extremely high accelerations or under vibration stay safely closed.

The Function of the adjustment fitting is no longer due to synchronization errors, Seat deformations, vehicle deformations dependent.

Of the Adjustment fitting should have larger shell tolerances can allow.

The Adjustment should be small to a comfortable seating position to be able to set exactly, but the tooth thickness and tooth width should still remain large to large component expansions to allow in the crash.

Of the Adjustment fitting should have the largest possible load torque can be supported on the smallest possible space.

Of the Adjustment fitting should be sealed with a blind so that no small parts can get into the locking mechanism and on the other hand, no grease can escape from the fitting and the Contaminate seats or clothing can.

The Interlocked volume between tooth segments and frame should be as possible be big by a low component stress and a to achieve a uniform distribution of the load torque. simultaneously but the adjustment fitting is small and inexpensive stay. Tensions in the seating system should be minimized.

The Production-related limitation of the fineness of teeth in the Production should be lifted. So that the teeth though pointed but still can be deep and thus allows a secure fit which is not absorbed by component strains.

SOLUTION:

These Task is accomplished by an adjustment fitting with the characteristics of the Claim 1 solved.

additionally the release was in a particularly preferred adjustment fitting designed so that the unlocking process is a multi-stage opening process in three sharply separated phases.

The first phase is a free path.

From the release lever 5 must be an empty angle 27 against the handle spring 17 be overcome before there is any contact between the closing springs 2 . 3 and the release lever 5 or the Entriegelungsscheibe 4 comes unlocking lever 5 and unlocking disc are over the actuating shaft 15 rotatably connected.

The second phase is a release.

The adjustment fitting is unlocked by the release lever 5 around the arming angle 28 is pressed. As a result, all clamp body 14 ' against the closing spring forces 34 to the respective Entsicherungshub 30 emotional.

In the third phase is about unlocking angle 29 continue to operate.

Only now does the bearing plate move 12 ,

This will be the tooth segments 8th over the curved paths 32 the bearing plate 12 against the spring washers 13 from the teeth with the frame 11 pressed whereby the adjustment fitting is unlocked.

The tooth segments make the Entriegelungshub 31 ,

The tooth segments 8th are on the guide pin 10 which led at the same time the housing 6 . 7 connect with each other.

In addition, the tooth segments were 8th and the frame toothing 11 in a particularly preferred adjustment fitting designed so that the transmission on the full extent of the frame toothing 11 except for a small gap 33 he follows. It was the tooth width 21n made as big as the tooth thickness 20 , So that too small Verstellweiten 22 are possible without it comes to a loss of coverage in the teeth due to small tooth heights. What at n = 1 and small adjustment widths 22 earlier would be the case.

The clamping angle 36 must be so small that the required minimum load torque is transmitted. It does not necessarily have to be so small that self-locking between clamping body 14 ' and toothed segment 8th occurs.

In addition, in a particularly preferred adjustment fitting by the centrally located actuating shaft 15 two seat fittings, by means of a synchronization rod 18 actuated.

As the fulcrum of the adjustment also the pivot point of the release lever 5 is and the release lever 5 in the vehicle is usually freely accessible, the balance bushing 19 be installed after the installation of the seat in the vehicle. So are all malpositions 23 compensated due to seat tolerances and vehicle tolerances and the entire system "vehicle with seat" is completely stress-free .This leads to the avoidance of breakaway torque in the unlocking process.

Next addition, a particularly preferred adjustment fitting is by a blind 9 , the handle part 16 and the lid 1 completely closed. So that neither small parts nor liquids can penetrate into the fitting. The folding angle can be changed vehicle-specific by changing the frame part with the vehicle-specific screw holes.

ADVANTAGES:

It was extremely amazing for the expert in the invented adjustment fitting all the above disadvantages no longer occurred.

The adjustable fitting has a multiple locking mechanism 14 , so that loads caused by accelerations a 24 . 25 always in pairs the same size, once closing and once opening, acting and therefore compensating.

In order to You can no longer open the adjustment fitting to lead.

Of the Adjustable fitting locks securely and completely in any position.

Pseudo-locked states are excluded because every locking mechanism 14 independently by the closing springs 2 . 3 and the spring washer 13 closes.

Through the central operating shaft 15 can two adjustment fittings by means of a synchronization rod 18 be synchronized mechanically.

As the fulcrum of the adjustment also the pivot point of the release lever 5 is and the release lever 5 in the vehicle must be freely accessible, the balance bush 19 be installed in the vehicle after installation of the seat. Thus, all vehicle tolerances are compensated and the entire system vehicle seat is tension-free. Breakaway torques when unlocking are thereby prevented, unlocking forces are thereby reduced. The malposition 23 Thus, after installation in the vehicle always to zero.

The adjustment fitting is due to the blind 9 , the lid 1 and the handle part 16 completely tightly closed.

In order to can not contain any small parts or liquids get the adjustment fitting and disturb the closing function.

Furthermore No grease can escape from the adjustment fitting and seats or dirty clothes.

Opening loads 25 the act only briefly on the handle lever must first an empty angle 27 overcome in contact with one of the closing springs 2 . 3 get.

The adjustment path 35 At all eight, the one-piece locking mechanism 14 forming closing bodies 14 ' , be different. This avoids that at the beginning of the unlocking only a higher breakaway torque must be overcome.

With the same tooth thickness 20 and tooth width 21 can the adjustment distance 22 be finer by the number of segments n than in the most finely toothed fitting currently available.

At the same adjustment 22 can the tooth thickness 20 and the tooth width 21 by the number of segments n are chosen to be larger than the most finely toothed fitting currently available.

Tilting between housing 6 . 7 and frame 11 no longer lead to a loss of coverage in the teeth and are therefore more tolerable.

Due to the circumferential toothing in the frame 11 A moment of load is distributed in a large toothed volume on very many and large teeth. This is very effective and makes it possible to support large holding moments with a small seat fitting. The tooth segments 8th therefore use the full extent to the gap 33 ,

In order to can the important for the sitting comfort distance between Body and metal structure get bigger.

costs and weight of the adjustment fitting remain due to the effective Load distribution also small.

deformities 23 by component tolerance zen in the seat or in the fitting fitting are compensated.

The guide pins 10 not only serve for the precise guidance of the tooth segments 8th but also for the connection of the two housings 6 . 7 ,

All closing springs 2 . 3 and the spring washer 13 can be used twice and extend around each sector of a tooth 8th and each as a one-piece locking mechanism 14 acting closing body individually to feathers.

release lever 5 and unlocking disc 4 have the same curved recesses and divide the operating angle 26 in the phases idle stroke against the handle spring 17 about the empty angle, Entsicherungshub 30 by pressing the arming angle and unlocking stroke 31 by continuing to work around the unlocking angle. By the shape of the curved paths 32 the required forces can be varied.

The folding angle 37 Can be vehicle-specific varied by different frame parts 11 with different mounting holes.

Of the Clamping angle must only be chosen so that the Fitting the load moments holds. He does not have to be so small that self-inhibition prevails. Thereby can Breakaway moments are prevented.

NOVELTY:

According to the invention, the adjusting fitting has a locking mechanism that is executed at least twice or several times 14 which is designed so that by the acceleration a caused opening loads 25 and closing loads 24 compensate in pairs to zero. Preferably by two multi-part locking mechanisms 14 on a toothed segment 8th Act. Preferably by several multi-part locking mechanisms 14 on a toothed segment 8th Act.

Preferably by several one-piece closing body 14 ' on several tooth segments 8th Act. Preferably by several one-piece closing body 14 ' on a toothed segment 8th Act.

Furthermore, according to the invention, the closing mechanism 14 from several parts of the same mass and the same mass moment of inertia, and at least one toothed segment 8th ,

Preferably form the parts of equal mass and equal mass moment of inertia one knee lever each.

Furthermore, according to the invention, the locking mechanism 14 also from only one closing body 14 ' and one toothed segment each 8th exist which exists several times.

Furthermore, according to the invention are the multiple existing tooth segments 8th and the frame 11 so interlocked that a gap 33 arises and thereby in any position at least one toothed segment 8th the tooth exactly on the gap of the frame 11 stands.

Preferably, the complete circumference of the frame 11 toothed.

Preferably, the complete scope of the frame toothing 11 , except for the gap 33 used for positive power transmission.

Furthermore, according to the invention can malpositions with the adjustment fitting 23 at no time lead to a non-locking or false lock.

Furthermore, according to the invention all tooth segments 8th of only two spring washers 13 so in the gearing of the frame 11 pressed that every tooth segment 8th individually sprung.

Furthermore, according to the invention, all locking mechanisms 14 with only two double-existing closing springs 2 . 3 individually suspended in its closed position.

Furthermore, according to the invention, the tooth segments 8th on guide pins 10 led, which at the same time the two housings 6 . 7 stable and precise connect with each other.

Furthermore, according to the invention, the compensation bush 19 for connecting at least one of the adjustment fittings with the synchronization rod 18 only after installation of the seat mounted in the vehicle.

Furthermore, according to the invention are in the release lever 5 and in the unlocking disc 4 curved cutouts. The curve divides the operating angle 26 in the angle empty angle 27 , Arming angle 28 and unlocking angle 29 ,

Preferably not immediately to the release lever but only after the empty angle to act on the locking mechanism.

Preferably, after pressing the unlocking lever 5 to the arming angle 28 all locking mechanisms 14 to have solved.

Preferably, after pressing the unlocking lever 5 until the end of the unlocking angle all toothed segments 8th to have unlocked.

Farther According to the invention, the fitting is complete sealed.

Preferably by means of a blind 9

Preferably by the handle part 16 ,

Preferably through the lid 1 ,

Furthermore, according to the invention, the grip part 16 by the handle spring 17 on the housing-fixed stop in the lid 1 drawn.

Furthermore, according to the invention, there is between the actuating shaft 15 and the bearing plate 12 a free path around the empty angle 28 ,

Furthermore, according to the invention can at the same tooth thickness 20 the teeth around the number of segments n be deeper, because the tooth width 21 becomes n times bigger. As a result, with the same erosion wire thickness, n times smaller adjustment widths can be achieved 22 will be realized.

Furthermore, according to the invention the Entsicherungshub 30 due to component tolerances not be equal in all clamp bodies, but not to a scattering arming angle 29 but only leads to a varying empty angle 27 , The unlocking movement 35 So it can start at any other starting point at another starting point when the release lever 5 but about the arming angle 28 is actuated are all clamp body 14 ' therefore fully unlocked in the same radial position and the adjustment fitting

Furthermore, according to the invention are in the bearing plate 12 curved paths 32 over which the tooth segments 8th a release stroke 31 from the frame toothing 11 to be moved.

Furthermore, according to the invention, different folding angles 37 about different frame parts 11 be realized as the frame 11 Anyway, with its bolt-on positions, it will be vehicle-specific.

In the following, the invention is based on the 1 to 9 explained.

These Explanations are merely exemplary and restrictive the general concept of the invention is not a.

The Explanations apply to all invention objects alike.

1 shows an exploded view of a particularly preferred adjustment fitting

2 shows the fully assembled adjustment fitting and a subassembly.

3 shows the unwound toothing of two adjustment fittings.

4 shows the synchronization of two adjustment fittings and the folding angle 37 ,

5 shows an example of the operation of the double-executed locking mechanism on the example of a toggle lever.

6 shows a partial assembly of the adjustment fitting with the Entsicherungswinkel 27 ,

7 shows a partial assembly and the unlocking movement 33 ,

8th shows a section through the tooth segments 8th and clamp body 14 ,

9 shows a section through the unlocking mechanism

1 shows first all components of a preferred embodiment illustratively in an exploded view. Not shown are more vehicle-specific components such as the handle 16 , the handle feather 17 , the synchronization rod 18 and the balance bush 19 ,

The locking mechanism 14 is in this particularly preferred adjustment fitting by a one-piece closing body 14 ' formed, which acts on only one toothed segment but n times available. Where n> 2 must be.

The closing springs 1 . 2 are used twice, as well as the spring washer 13 ,

In 2 is the assembled adjustment fitting and a partial assembly of the adjustment fitting shown. You can see how the handle part 16 the slot in the lid 1 covering the adjustment fitting and like the handle spring 17 the handle part 16 pulls into the lower stop position. It recognizes like a toothed segment 8th Head on head and another sector of the tooth 8th to the frame 11 Head on gap stands.

The representation is purely exemplary and does not limit the general idea of the invention. The tooth segments 8th are on the lead Zen 10 guided.

3 shows the unwound toothing of two adjustment fittings and illustrates how malpositions 23 affect the closing. For such misalignments 23 There can be many causes. These include, component tolerances, seat tolerances, vehicle tolerances, seat deformations, vehicle deformations and assembly errors.

It also makes it clear that due to the large tooth width 21 even with small tooth thicknesses 20 can realize very deep teeth. Thus, at the same tooth height n times smaller adjustment widths 22 realizable.

4 shows the synchronization of two adjustment fittings and the folding angle 37 , synchronization rod 18 and actuating shaft 15 be by pressing in the balance bushing 19 rotatably connected.

5 explains clearly how double or multiple executed multi-part locking mechanisms 14 loads caused by accelerations a 24 . 25 can always compensate to zero if they consist of components of the same mass and rotating mass.

The Presentation is purely exemplary and limits the general Inventive idea not one

6 shows a partial assembly of a particularly preferred adjustment fitting to illustrate that between the bearing plate 12 and the actuating shaft 15 a freewheel to the Entsicherungswinkel 28 consists. The fitting uses to support the holding moments the K complete circumference of the frame teeth, except for the gap 33 ,

7 become the individual phases of the unlocking movement 35 explained. The entire operating angle 26 is always the same size.

First, a Leerhub the unlocking lever 5 around the empty angle 27 ,

After pressing the release lever 5 around the arming angle 28 the fitting is unlocked. He could now be opened by a leaning moment.

By further operation of the release lever 5 around the unlocking angle 29 become all tooth segments 8th unlocked. The Entsicherungshub 30 arises when the operating lever 5 around the arming angle 27 is turned. It is shown that the closing spring forces 34 act closing.

8th shows again by example how the opening and closing loads 24 . 25 Even with a one-piece locking mechanism, the n was performed professional and instead of only one toothed segment on n toothed segments acts to compensate for zero.

Again, the illustration is purely exemplary and does not limit the general concept of the invention. The blind 9 seals with the housings 6 . 7 , The clamping angle 36 is chosen so that self-locking is ensured.

9 shows on average the curved paths 32 the unlocking mechanism with which the toothed segments against the spring force of the spring washers from the toothing with the frame 11 be pressed. The unlocking stroke 31 and the curved paths 32 are shown

1

cover

2

closing spring 1

3

closing spring 2

4

unlocking

5

release lever

6

Gehäuse_re

7

Gehäuse_li

8th

toothed segments

9

louvre

10

guide pins

11

frame

12

bearing plate

13

spring washer

14

closing mechanism

14 '

clamping bodies

15

actuating shaft

16

handle part

17

handle spring

18

synchronization rod

19

compensating bush

20

tooth thickness

21

tooth width

22

displacement amount

23

deformity

24

closing load

25

opening load

26

operating angle

27

free angle

28

Entsicherungswinkel

29

unlocking angle

30

Entsicherungshub

31

Entriegelungshub

32

curved paths

33

gap

34

Closing spring forces

35

unlocking

36

clamping profile

37

Verklappwinkel

n

segment number

a

acceleration

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2641583 [0002]
• - DE 2660395 [0002]
• - DE 3028539 [0002]
• - DE 2845281 [0006]
• - DE 2927544 [0006]
• - DE 2939729 [0006]
• DE 2950702 [0006]
• - DE 19928416 [0006]
• - DE 3031182 [0006]
• - EP 1316465 [0011]

Claims (18)

Adjustable fitting with frame 11 , Toothed segment 8th , Closing springs and locking mechanism 14 In characterized that the locking mechanisms 14 consisting of components of the same mass and rotating mass so that caused by accelerations a opening and closing loads 25 . 24 compensate each other and so opening the adjustment fitting is prevented and that the tooth segments 8th The same mass and rotating mass also have opening and closing loads caused by accelerations a 25 . 24 compensate each other and that multiple executed tooth segments 8th and frame 11 are so toothed that in each position of the adjustment fitting at least one toothed segment 8th the center of the tooth on the middle of the tooth gap of the frame 11 stands and that all tooth segments 8th , Locking mechanisms 14 or clamp body 14 ' over closing springs 2 . 3 . 13 be pressed individually suspended in their closed position. Adjustment fitting according to claim 1, characterized in that the locking mechanisms 14 are multi-part and are executed several times. Adjustment fitting according to claim 1 or 2, characterized in that a multiple existing locking mechanism 14 from a single closing body 14 ' there is a toothed segment on each 8th acts. Adjustment fitting according to one of the preceding claims, characterized in that the tooth width 21 n times the tooth thickness 20 is and therefore at n> 2 smaller Verstellweiten 22 and larger tooth heights can be realized than would be the case with n = 1. Adjustment fitting according to one of the preceding claims, characterized in that all component-related and assembly-related misalignments 23 can not lead to impairment of the closing function. Adjustment fitting according to one of the preceding claims, characterized in that the toothed segments 8th the circumferential toothing of the frame 11 to the gap 33 cover to achieve the greatest possible distribution of the load torque. Adjustment fitting according to one of the preceding claims, characterized in that the toothed segments 8th on guide pins 10 the led are also the housing 6 . 7 connect with each other. Adjustment fitting according to one of the preceding claims, characterized in that a handle spring 17 the handle part 16 against the stop in the lid 1 pulls and an opening load 25 only after overcoming an empty angle 27 in contact with the closing springs 1 . 2 comes. Adjustment fitting according to one of the preceding claims, characterized in that the closing springs 2 . 3 and the spring washer 13 be used several times around all tooth segments 8th and closing body 14 ' individually to spring. Adjustment fitting according to one of the preceding claims, characterized in that two adjusting fittings via a synchronization rod 18 and two balance sockets 19 be actuated and at least one of the balance sockets 19 only after installation of the seat is mounted in the vehicle. Adjustment fitting according to one of the preceding claims, characterized in that between the bearing plate 12 and actuating shaft 15 a free travel is greater than or equal to the Entsicherungswinkel 28 is. Adjustment fitting according to one of the preceding claims, characterized in that unlocking lever 5 and unlocking disc 4 the same curved recesses possess which the operating angle 26 divide into an empty angle 27 , Arming angle 28 and unlocking angle 29 , Adjustment fitting according to one of the preceding claims, characterized in that unlocking lever 5 and unlocking disc 4 the clamp body 14 ' against the closing spring forces 34 by means of the closing springs 2 . 3 emotional. Adjustment fitting according to one of the preceding claims, characterized in that the Entsicherungshub 30 and thus also the unlocking movement 35 the individual clamp body 14 ' but is different in size after pressing the release lever 5 around the arming angle 28 all clamp bodies 14 ' so far were pressed that all tooth segments 8th are unlocked. Adjustment fitting according to one of the preceding claims, characterized in that in the bearing plate 12 curved paths 32 are about which the tooth segments 8th against the spring washer 13 from the teeth with the frame 11 be pushed out. Adjustment fitting according to one of the preceding claims, characterized in that the clamping angle 36 not necessarily so small that needs to be between toothed segment 8th and clamp body 14 ' Self-inhibition prevails, but only so it must be small that the fitting does not open when the minimum required load torque is reached. Adjustment fitting according to one of the preceding claims, characterized in that the tilt angle 37 by means of the frame part 11 vehicle-specific customizable 18 , Adjustment fitting according to one of the preceding claims, characterized in that the adjustment fitting is sealed by the handle part 16 the gap in the lid 1 covers. Adjustment fitting according to one of the preceding claims, characterized in that a Venetian blind 9 the gap between housing_re 6 and housing_li 7 seals.