DE2409579A1 - DEVICE FOR ADJUSTING THE HEIGHT AND / OR INCLINATION OF THE SEAT SURFACES OF SEATS - Google Patents

Description

Dr.R./Ln./Rz. February 21, 1974

15 362/366

Bremshey Aktiengesellschaft

565 Solingen-Ohligs

Ahrstr. 5-7

Device for adjusting the height and / or inclination of the seat surfaces of seats

The subject of the invention is a device for heights and / or inclination adjustment of the seat surface of seats, in particular motor vehicle seats, in which the seat is connected toggle-like with toothed segments rotatably mounted in the underframe, in which toothed segments are hand-lever-operated Toothed locking bolt engage.

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A known embodiment of generic adjustment devices looks for the height adjustment of the front and the rear seat section configured in different ways Components before. In the front seat section, the toothed segments are rotatably arranged on an axis of the underframe. An arm extends from each tooth segment, which arm is fixed to the tooth segment and articulated at its free end is connected to the seat frame. The frontal toothing of the facing in the direction of the front end of the seat Toothed segments interacts with a locking bolt designed as a swivel plate and toothed in a corresponding manner. The locking bolt is pivotably arranged on a stationary axis of the underframe. The locking bolt here has a Control pin, which engages in a control slot of a link plate, which is pivotable on the same axis how the tooth segment sits. The slot in the link plate is aligned eccentrically to the pivot point of the plate. Furthermore, a push rod engages the link plate, which

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via a handle, by means of a control pin extending from the handle and protruding into a slot in the push rod is relocatable. If the push rod is shifted in the direction of the toothed segment, the Interlocking of the locking bolt through the eccentric control of the link disk from the interlocking of the toothed segment and releases the relocation. In the rear seat area are also around an axis of the base rotatable toothed segments are provided, which also have a permanently assigned arm, but which has a The intermediate lever is articulated on the seat frame. The pivoting displacement of these rear tooth segments is blocked by horizontally displaceable locking bolts, which engage in the toothing of the toothed segments. This rear Locking bolts are also in the tooth release position via push rods that can be displaced by the handle and an intermediate link bringable. The locking position of the locking bar is stabilized by spring loading. The multitude however, the components of this embodiment have a significant disadvantage. Also the diversion in different Direction of movement for disengaging the locking bolt is disadvantageous for a favorable application of force and high stability in use. Due to the unfavorable diversions of the

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moving parts, the disadvantage arises that, despite the slight displacement of the locking bolt to dissolve the Tooth engagement position a considerable swivel range for the Handling is necessary.

The object of the invention is, in particular, i.e. in addition to the task resulting from the description and claims, a generic adjustment device advantageous in terms of use in a simple manner in terms of production technology train in such a way that with a small number of components a functionally reliable and stable use as well a simplified adjustment with the smallest dimensions of the underframe and extremely small swivel range of the Handle is achieved.

This object is achieved by the inventions specified in claims 1 and 9.

The subclaims represent advantageous developments of Inventions.

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As a result of such a configuration, there is an adjusting device of the generic type created of increased use value. A major advantage is achieved in that the teeth of the tooth segments facing each other. On the one hand, this gives favorable forces, on the other hand, it is for the shift the locking bolt in the locked position no deflection of the movement path necessary. The opposite movement path the two locking bar runs linearly in the horizontal direction. In this way there is a significant reduction in the number of components achieved, and created a Verstellüngeinrichtung that takes up little space. The underframe faces opposite significantly smaller dimensions of the seat. Due to the favorable lever, despite the simplified design, a high stability achieved. The forces that occur at the toothing points between the components are distributed favorably. Since the shifting of the locking bolt takes place only in one movement path, the pivoting range of the operating lever is kept small. This leads to convenient operation; especially when the height of the seat is shifted by energy storage springs takes place, this shift can even be made when the user is on the seat ELatz g3-

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has taken. This is individually an optimally favorable one Seat adjustment possible. The movement path of the swivel lever is also most favorable, towards the rear of the seat tend, the operating lever is moved in one pivoting direction, wherein the pivoting movement is advantageous is limited to the stroke; To lift the rear end of the seat, the swivel lever is in the other swivel end position brought. In order to achieve a parallel height shift of the seat, first the front, then the rear Seated raised. The upward movement of the seat can be supported by conventional springs or by force storage springs be completely taken over. The control stages of the locking bars take an advantageous one for a favorable actuation Position to the control pin of the operating lever. It is for the relocation of both locking bolts only requires a control pin, since the control stages are so offset to one another are arranged that the distance is slightly larger than the diameter of the control pin. Also is through this convenient, central location of the control pin to the control steps an equal pivoting path of the operating lever in both pivoting directions for the optional height shift of the Given seat sections. Because the two locking bolts

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are under spring load, there is the advantage of a stable locking position, which then fixes itself remains when strong vibrations, which are particularly common in motor vehicles, occur. The feathers can for example be designed as tension springs, each attached to a stationary underframe section, for example the guide tabs, and a locking bolt attack. The toothed segments are offset in height according to the arrangement of the locking bolts one above the other arranged. This makes it possible, despite the height difference, both in the front and in the rear The same adjustment device components are to be used in the seat area, i.e. the toothed segments are all of the same type shaped and the same size; both seat sections have the same production area, which means it is possible to choose the most favorable seat position even in the adjustment end positions. For the spring loading of the Locking bolt in the latching position is also an inexpensive option without being stationary on the underframe provided sections to arrange the spring. A tension spring is preferably used here, one of which

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End on one locking bolt and the other end engages the other locking bolt. The tension spring is aligned in such a way that that their application of force is as acute angled as possible to the plane of movement of the locking bolt. But it still exists another advantageous possibility of the spring arrangement. One compression spring for each locking bolt can be installed in a blind hole of the locking bolt can be arranged between the locking bolt surface and the guide tab, with one spring end is supported on a retaining projection of the guide plate and the other spring end at the end of the blind hole. These The spring arrangement is favorable above all because the springs are protected from use by the concealed position lie in. The favorable design of the guide tabs enables partial sections of both locking bars to guide in sections, with a guide tab on each side in the end areas of the locking bolt is arranged so that each guide tab the head of a locking bolt and the tail of the other locking bolt leads. For smooth guidance under low frictional forces, it is advantageous that the locking bolt both on their broad and on their transverse surfaces of

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comprises sliding pieces arranged on the guide tabs will. As a result, the guide is not only smoother, but also more stable, since the locking bolt has almost no play be guided. In addition to the reduced surface area of the adjustment device, it is even possible to use a lower one Achieve design. The locking bolts are arranged next to each other at the same height, the same trained control levels then lie on the same side for both locking bolts. Despite being next to each other all the advantages described are retained here as well. Another favorable solution is that both locking bars can be disengaged at the same time by shifting the hand lever. In this way, not only is the swivel path of the operating lever is reduced even more, but it is a parallel height adjustment or a. Tilt adjustment the seat can be operated using the same controls. The front and rear seat sections must be adjusted in height can no longer be lifted alternately, but by moving the seat, for example Use a force storage spring in parallel. An inclination

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Adjustment in the individually most favorable position remains
however also preserved. The locking bolts are also designed in the same way as described above,
only the control pin being designed as a control pressure piece, the free ends of which cause a displacement of the locking bolt on both sides at the same time when the operating lever is displaced. The control pressure piece is conveniently arranged so that it sits coaxially to the operating lever pivot axis. The spring loading of the locking bolt in the locking direction results from the design of the pressure piece
and selection of the offset of the control stages the advantage that the unlocked locking bolt automatically enter the locking position again after releasing the operating lever due to spring force and the operating lever hereby moves back and fixes it in its one pivot end division.

The subject matter of the invention is based on several exemplary embodiments explained in more detail below in the drawing. Show it:

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1 shows a first embodiment of the adjusting device in the lowest position of the seat support,

Fig. 2 shows the section along line H-II in Fig. 1,

3 shows the first embodiment of the adjusting device with the rear seat support section raised,

4 shows a detail in the area of a guide leash

with particular clarification of the spring arrangement,

5 shows a second embodiment of the adjusting device,

Fig. 6 shows the second embodiment with raised locking bolts.

7 shows a variant of the second embodiment, 8 shows a third embodiment of the adjusting device,

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Fig. 9 is a partial plan view of this and

Fig. 10 is a perspective view of a slider.

The seat, not shown in detail, for example a motor vehicle, is supported by a seat support 1. Of the Seat support is relatively adjustable in height and / or inclination to an underframe 2 on the underside, which is fixed, for example is arranged on the vehicle floor.

In the front seat section 1, the seat support 1 is like a toggle lever via an intermediate lever articulated on it

3 also articulated to a bracket 4, which is stationary on a rotatable between the side walls of the underframe transverse axis 5 is hinged. The tab

4 is a toothed segment 6 on the axis 5 radially opposite. The toothed segment 6 is at its end face 6 * with a Toothing 7 equipped.

The rear end of the seat support 1 ″ has a downwardly directed one rigid boom 8, which carries a shock absorber 48 and is also articulated via a hinge point 9

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engages a tab 4, which is fixedly seated on a transverse axis which is also rotatably mounted in the underframe. A toothed segment 11, which is also provided with a toothing 12 ^{on its end face 11 f,} also lies radially opposite this tab 4 on the axis 10.

The boom 8 and the intermediate lever 3 of the seat support 1 are preferably in pairs on both sides of the seat support arranged and articulated via the tabs 4 on the tubes 5 and 10, respectively. The toothed segments 6 and 11, however, only have to be provided on a seat frame side.

The toothed segments 6 and 11 cooperate with locking bolts 13, 14, which locking bolts are horizontally displaceable from vertically aligned, on the one underframe wall 2 * attached, bridge-shaped guide tabs 15 between circuit of sliders 16 and 17 are carried.

The sliders are L-shaped in cross section, one leg L1 of the upper slider 16 being the Upper edge of the locking bolt 13 overlaps and the lower edge of the locking bolt 13 on the L-leg LI of the middle

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Supports the slider. The inner surface of the leg Ll of the middle slide 16 in turn covers the upper edge of the locking bolt 14, the lower edge of the locking bolt 14 runs on the leg L3 of the lower slide 17.

The sliders are designed so that their other, vertically oriented L-leg L is a transverse Support rib 18 extends, by means of which the sliding pieces are inserted into correspondingly shaped openings in the guide plate 15 be inserted. The then still free end portion of the legs L bridges the space between the guide tab and the locking bolts under the guidance of the latter opposite lateral guidance experience the locking bolt through the wall 2 *.

The locking bolts 13, 14 are used to fix the position of the seat support. The head 13 'of the locking bolt 13 has this in Ratchet teeth 13 "pointing towards the tooth segment 6, which fit together with the toothing of the tooth segment.

The locking bolt 14 also has locking teeth on its head 14 ' 14 ", which work together with the teeth of the toothed segment 11.

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The locking bolts 13, 14 are, as already mentioned, horizontally displaceable, the displacement via a control pin 19 of an operating lever serving as a handle 20 takes place. The central axis of the control pin 19 sits on the parting line between the two locking bolts.

For the entry of the control pin 19, the locking bolts 13 and 14 have recesses 21 on the mutually facing sides 22 on which control stages 23, 24 form for attacking the control pin 19. The tax levels 23,24 are around here the cross-sectional dimension of the control pin offset from one another.

The pivot point 25 of the operating lever 20 is close to the floor of the underframe 2. When the operating lever is pivoted 20 in the direction of the arrow χ, the control pin moves concentrically to the pivot point 25 and controls via the control stage eh 24 the ratchet teeth 14 ″ of the locking bolt 14 from the toothed segment 11; the toothed segment 11 is now with the Axis 10 rotatable and the rear end of the seat support 1 ″ and thus the seat can be shifted in height, whereby at the same time

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Maintaining the position of the front seat end 1 'a Inclination adjustment is achieved. The pivoting end positions of the operating lever are here by means of a stop bracket 20 'limited to the limit.

In order to achieve a parallel height adjustment of the seat support 1, after lifting one end of the seat support 1 ", the operating lever 20 must be moved in the direction of arrow y, whereby the control pin 19 shifts the locking bolt 13 via the control stage 23, so that its ratchet teeth 13 ^M out of locking engagement with . enter the toothed segment 6 the toothed segment 6 is also rotatable with the axis 5, the vordereSitzträgerende 1 ¹ can thus also be increased.

To fix the meshing positions of the teeth, the locking bars are spring-loaded in the locking direction. To this everyone owns Locking bolt 13 and 14 each have a tension spring 26, which at one end on a pin 27 of the guide tabs 15 and at the other end attack on a pin 28 of the locking bolt 13 and 14, respectively. The locking bolts are activated when the operating lever is released according to the spring force automatically back in the locked position, the operating lever through the control stages is simultaneously brought into its starting position via the control pin.

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Despite the different height arrangement of the locking bolt, the toothed segments have the same design same swivel range. This is achieved in that the rotatable axes 5 and 10 of the toothed segments in opposite the locking bolts are arranged offset in height in a corresponding manner.

Another embodiment for spring loading the Locking bolt is illustrated in FIG. Here a guide tab 15 is shown, which is between the sliders 16.17 leads the tail 14 * "of the locking bolt 14. Im of the Guide tab covered area of the tail 14 '"has the locking bolt 14 has a blind hole 29. In this blind hole 29, a compression spring 30 is inserted, which at one end on the bottom 29 of the blind bore 29 and at the other end on a fixed seat on the guide bracket, into the Blind hole protruding projection 31 is supported. The compression spring is under tension.

Figs. 5 and 6 show a second embodiment of the Adjusting device. With the exception of the operating lever 32, all components are designed in the same way as in the first exemplary embodiment. The operating lever 32, however, has a rectangular control pressure piece 33, which is coaxial to the lever

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Pivot axis 34, which is mounted on the underframe 2, is seated. The narrow sides of the pressure piece 33 correspond approximately the distance between the control steps 23,24 of the locking bolt 13,14, the recesses 21,22 here somewhat deeper in the Latch surface protrude than in the first embodiment. By the pressure piece 33 it is achieved that with a single shift of the operating lever in the direction of arrow y with both locking bolts 13, 14 at the same time except for locking engagement the tooth segments are brought. This is done in that the diagonally opposite corner areas 33 ', 33 " of the pressure piece step against a locking bolt at the same time and move it.

The pivoting movement of the operating lever 32 is also here limited by a stop bracket 35.

A further variant of the spring arrangement is shown in FIG. 5 for the locking position of the locking bolt, which is loaded by spring force. Here a tension spring 36 is provided, one end of which on a pin 37 of the locking bolt 13 and the other end

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engages on a pin 38 of the locking bolt 14. The tension spring 36 thus braces the locking bolts in opposite directions to one another.

A second variant of the pressure piece is shown in FIG. 7. Here the pressure piece only consists of two corresponding ones the pressure arms 39, 40 aligned with the diagonals of the pressure piece 33 and extending from the lever pivot axis 34. These pressure arms fulfill the same purpose as the corners 33 ′ and 33 ″ of the pressure piece 33.

8 and 9 show a third embodiment of the adjusting device. Except for the operating lever 40 and the guide tabs 41, the other components are also here designed according to the embodiments described above; only the locking bolt 13 has been turned so that its recess 21 points upwards corresponding to the locking bolt 14 and in the same height arrangement next to the locking bolt 14 lies. The axes 5 and 10 of the toothed segments 6 and 11 are at the same height in this embodiment arranged. The guide tabs 41 are also smaller here

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formed, or the upper portion, which in the embodiments described above, the uppermost slide 16 is not necessary here. The locking bars only run between the middle slide 16 and the lower slider 17. The one L-leg L1 or L3 of the slider is, however, correspondingly longer in this case designed so that it overlaps or engages under both locking bolts. The operating lever 40 has a pivot point 42, which is arranged above the locking bolt on the underframe. The lever 40 continues over the pivot point 42 downwards and protrudes into the space 43 between the locking bolts 13, 14. The free end of the lever carries a split control pin, one section 44 of which extends from one broad side of the lever and section 45 from the other. The section

44 protrudes into the recess 22 of the locking bolt 14 and the section

45 into the recess 21 of the locking bolt 13.

When pivoting the operating lever 14 either in the direction of the arrow χ or y, the corresponding section 44 or 45 takes the corresponding locking bolt with it via its locking step and thereby removes the locked position. Here is the one too

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Pivoting path of the lever 40 is limited by a stop bracket 46 by means of a stop bracket 46.

The third embodiment according to FIGS. 8 and 9 also brings the possibility of a simultaneous actuation of both locking bolts. For this purpose, the recesses 21 and 22 are deeper formed so that, for example, a pressure piece 33 can be arranged centrally in the recess. The pressure piece lies in this case coaxial to the Hebe! pivot axis and displaced despite Side by side of the locking bolts when pivoting the lever, both locking bolts at the same time.

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Claims (12)

- 22 - 15 362/366 February 21, 1974 claims 1.) \ Device for height and / or inclination adjustment V- / the seat surface of seats, especially motor vehicle seats, in which the seat is connected toggle-like with toothed segments rotatably mounted in the base, in which tooth segments engage hand-lever-operated tooth locking bars, characterized in that the Toothings (7 or 12) of the two tooth segments (6 or 11) are facing each other and the toothed locking bolt (13,14) in the clear space between the two tooth segments (6, 11) adjacent to one another and displaceable in opposite directions are. 2.) Device according to claim 1, characterized in that the two locking bolts (13, 14) lie one above the other are arranged and on their facing longitudinal edges offset from one another lying control stages (23,24) have, in the area in which a control pin (19) of the operating lever (20) common to both control stages lies. 5 0 9836/0201 - 23 - 15 362/366 February 21, 1974 3.) Device according to claim 1, characterized in that the two locking bolts (13,14) in the tooth engagement direction are spring loaded. 4.) Device according to claim 1 and 2, characterized in that the two tooth segments (6,11) offset in height are arranged to each other. 5.) Device according to claims 1 and 3, characterized in that that the two locking bolts (13, 14) against each other by a common spring (36), preferably tension spring are burdened. 6.) Device according to claims 1 and 3, characterized in that that the locking bolt spring (30) is arranged in a locking bolt blind hole (29). 7.) Device according to claim 1, characterized in that both locking bolts (13,14) are mounted in the area of the locking bolt heads (13 ', 14 ^f ) lying guide tabs (15 or 41), which are preferably with sliders (16,17 ) are equipped. 509836/0201 - 24 - 15 362/366 February 21, 1974 8.) Device according to claim 1, characterized in that the two locking bolts (13,14) side by side at the same height and both control stages are on the same side on both sides of the hand lever control pin (47) (23,24). 9.) Device for adjusting the height and / or inclination of the seat surface of seats, in particular motor vehicle seats, in which the seat is connected toggle-like with toothed segments rotatably mounted in the underframe, in which Toothed segments engage hand lever-operated toothed locking bolts, characterized in that both locking bolts (13,14) simultaneously by means of a hand lever shift are disengageable. 10.) device naph claim 9, characterized in that the adjacent locking bars (13, 14) have control stages on both sides on opposite sides a control pressure piece (33) of the operating lever (32). 509836/0201 -25 - 15 362/366 February 21, 1974 11.) Device according to claim 10, characterized in that the control pressure piece (33) of the operating lever (32) is coaxial to the operating lever pivot axis (34). 12.) Device according to claims 1 and 3 or 10, characterized characterized in that the control stages (23,24) according to the spring loading of the locking bolt (13,14) on the control pressure piece (33) of the operating lever. 509836/0201