KR100297637B1 - Seat Height Adjuster - Google Patents

Abstract

The present invention relates to a height adjusting device for sheets, in particular for automobile sheets.

The height adjustment device is used for raising and lowering the sheet portion with respect to the vehicle floor surface by the pivot support portions connected to each other in pairs via the swing shaft, connected to the regions of the respective sheet edges. In this case, each pivot shaft is connected to an actuating lever for the connection of the regulating device.

In the case of locking with only one adjustment drive forming the support member, in order to increase the strength of the height adjusting device, the upper part of the swing shaft having two pivot support portions projected upward by an operating lever disposed in an area of a wide side of the sheet Projecting lever, the actuating lever has a connecting point for the adjusting device disposed on the axis center of the pivot shaft 13, while the actuating lever disposed in the region of the other sheet wide side has two pivoting supports projecting upwards. It has a connection point for the adjusting device protruding downward from the swing shaft and disposed below the axis center of the swing shaft, wherein the adjusting device is formed by an operating lever of a rod regulator connected to each other.

Description

Seat height adjuster

FIG. 1 is a cross-sectional view along the line I-I of FIG. 2 from the inside surface of the seat, showing a first embodiment of the height adjustment device.

FIG. 2 is a half plan view showing only an operating side of the height adjusting device shown in FIG.

3 is another embodiment of a height adjustment device similar to that shown in FIG.

FIG. 4 is a half plan view similar to FIG. 2 for the height adjustment device shown in FIG.

5 is a front view of the height adjustment device shown in FIG. 3 viewed from the front side of the seat.

* Explanation of symbols for main parts of the drawings

10: guide rail device 13, 14: swing shaft

15: turning support 16: support

17: seat frame 18: swing support

19, 20: operating lever 21: adjusting device

22: rod regulator 23, 24: connection point

25, 55: manual lever 26: locking head

27: ratchet 28: seat load compensation spring

29: strap rail 30, 32: bolt

31, 34, 40, 51: longitudinal slots 35, 41, 44, 59: peg

36: release lever 35: catch

39, 49: shaft bolt 43: segment lever

46: locking device 47: tooth part

48, 70: stopper 50: tooth catch lever

52: bracket 53: tappet

54: working shaft 56: torsion spring

The invention allows the vehicle to be raised and lowered relative to the floor surface by means of a pivoting support, which is connected in pairs with each other via a pivoting shaft, in which the seating sections are connected in the area of each seat edge, and each pivoting shaft is operated for the connection of the adjusting device. A height adjusting device for seats, in particular for automobile seats, configured to be connected to the lever.

In German Patent Publication No. 36 36 786 there is a pivotal support in the region of each seat edge, but the pivotal supports are placed in turn on both longitudinal sides of the seat so that the lower side is formed of a guide rail device, for example. Height adjusting devices for sheets connected to a support are known. The transverse connection of the pivot support arranged on both seat longitudinal sides is made on the one hand via the vehicle bottom and on the other hand via the seat section or frame thereof connected to the free end of the pivot support. In this case, it is via the seat portion or frame thereof connected at the sheet longitudinal side. In this case, the rear pivot support has an adjustment arm, a sleeve-type spindle nut is connected to the free end of the arm, a screw spindle is inserted into the spindle nut, and the screw spindle is It is rotatable in the front region of the support on the operating side but supported without bending in the axial direction. The transfer of the adjustment movement from the rear pivot support to the front pivot support arranged on the same seat longitudinal side is made by the seat portion or frame structure thereof acting as a connecting rod. Of course, the transfer of the control movement to the longitudinal side of the sheet facing the operating side and running parallel to it is likewise made by the seat or its frame. Although the frame or sheet portion is formed torsionally in consideration of such a situation, tilting may be caused during the adjusting movement because squeaking may occur due to the play of the play and the asymmetry caused by the manufacture at the support point.

In the seat height adjustment device disclosed in German Patent Publication No. 31 30 280, the pivot support of each seat longitudinal side in which the adjustment movement is fixed to the pivot shaft by the use of a pivoting shaft across the seat wide side in the front and rear seat regions. The adjustment movement from one seat longitudinal side to the other seat longitudinal side is not effected by the seat portion itself or its frame because it is transmitted uniformly by injury. Outside the pivot support, each pivot shaft has an actuating lever in its central region, which acts downwardly with respect to the pivot axis of each pivot shaft. At the free end of each actuating lever, a control member which can be pushed out linearly is fixed in the form of a rod adjuster, and the rear end of the rod adjuster is provided on a pivot shaft opposite to a pivot shaft whose head of the rod adjuster is fixed through the actuating lever. Is supported. The rod regulator may be a piston-cylinder unit or a spindle rod portion operable pneumatically or hydraulically. In this case, however, two rod regulators are needed that work in opposite directions. By this solution, tilting and squeaking can be prevented and also in the case of fixing a sufficiently large strength of the adjusting device can be obtained, but this requires an increase in the part cost and assembly cost since two adjusting devices must be installed. do.

The object of the invention is, according to the invention, likewise projecting upwards on a pivoting shaft with two pivoting supports projecting upwards, with an actuating lever disposed in the region of one side seat wide side, arranged above the axis center of the pivoting shaft. An actuating lever disposed in the region of the other seat wide side, while having a connection point for the regulating device, projects downward from the pivoting shaft with two pivoting supports projecting upwards and the regulating device is an actuating lever of the rod regulator connected to each other. By forming. The rod adjuster is connected to an actuating lever raised above the swing shaft in one seat end region and connected to the actuating lever extending below the swing shaft in the other seat end region such that the longitudinal axis of the rod adjuster extends diagonally with respect to the swing shaft plane, The pivot shaft forms a plurality of bar connections connected by rod adjusters with its pivot support and its actuation lever. Thus, two triangular shaped link structures are produced, thereby obtaining a great strength of the regulating device in the resting state.

In the simplest case the rod regulator has a locking head which can be manually operated in stages, which locking head can be locked against the force of the seat load compensation spring by a ratchet. In this case, the locking head may be formed of two plates including a strap-shaped rail therebetween, and a catch that engages into the teeth of the strap-shaped rail between the plates is supported and the catch is held in a fixed direction. By being placed in the release position by a release lever pivotally supported on the plate, which is pressurized, the step height adjustment of the seat portion relative to the vehicle floor surface is possible by the weight displacement of the seat user. In this case, the step of adjustment corresponds to the pitch of the teeth of the strap-shaped rail and catch.

Of course, it is also possible to form an unlocking manually operable locking head, in which case a silent ratchet formed in a known manner is used instead of the ratchet described above.

Another embodiment of the present invention, in order to adjust the height of only one of the seat width sides in addition to the co-parallel height adjustment of the front and rear seat regions, i. According to an example, the actuating levers arranged in the area of one side of the seat wide side simultaneously form a pivoting support and in addition to the connection points for the adjusting device, the sides have a connection for a segment lever hinged to the seat frame, in this case An operable locking device, arranged in the seat frame, secures the segment levers and releases them as necessary. The segment lever preferably has a tooth defined by a stopper and a funded tooth catch lever which is loaded in the locking direction by a spring is engaged with the tooth.

In this case, the tooth catch lever preferably has a longitudinal slot into which a tappet of a bracket fixed on the actuating shaft engages, the actuating shaft being loaded in the locking direction by a torsion spring.

To adjust the seat steplessly, the rod adjuster can be formed as a spindle rod. The spindle of the rod adjuster preferably has a screw shaft at one end and a drive shaft driveable at the other end, the drive shaft being rotatable but axially supported at the connection point of one actuating lever, The threaded shaft is inserted into a spindle nut that is pivotable but not rotatable to another actuating lever.

For example, manual actuation of the spindle can be achieved by actuating the drive shaft of the spindle by means of a manual crank. Of course, it is also possible to motor-drive the spindle by coupling the drive shaft of the spindle of the rod regulator to the output member of the geared motor on the rotary follower. In this case the geared motor may preferably be fixed to the motor fixing plate, which is fixed to the pivoting shaft at intervals parallel to and parallel to the pivoting support which forms an actuating lever pivotally by a peg. It is connected to the auxiliary lever.

In order to prevent squeaking and in any case to maintain the operational readiness of the spindle rod, it is desirable for the spindle to have a stopper on which it limits the adjustment distance at the end of the threaded shaft.

Since the spindle nut is a component of a sleeve covering the threaded shaft in the inserted state of the spindle rod, contamination and damage of the threaded shaft of the spindle can be avoided.

Referring to the present invention in more detail with reference to the embodiment shown in the drawings as follows.

In the height adjusting device shown in FIGS. 1 and 2, the pivot shaft 13 is supported on the console plate 12 of the moving rail 11 of the guide rail device 10 in the front seat area. The pivot shaft 14 is supported in the rear seat region. In this embodiment, the two pivot shafts consist of pipes and the end region of the rear pivot shaft 14 is bent. Both end regions of the front pivot shaft 13 are connected to the pivot support 15, which pivots up beyond the axial center of the pivot shaft 13 and in a known manner to the support 16. It is connected to the seat frame 17 in the form of a hinge. The end region of the rear pivot shaft 14 also has a pivot support 18 connected to the pivot shaft 14, which likewise hinges to the seat frame 17 via the support 16. Leads to.

2 projecting upward through the axial center of the pivoting shaft 13 parallel to one another at small intervals on the pivoting shaft 13 outside the seat longitudinal center between the pivotal supports 15 disposed on the two longitudinal sides of the seat. Two actuating levers 19 are fixed to the pivoting shaft 13 by welding, for example, an actuating lever 20 is arranged on the pivoting shaft 14, the actuating lever 20 being an actuating lever 19. Unlike), it projects downward from the lower axis of the pivot shaft 14 and may likewise be connected to the pivot shaft 14 by welding.

The connection point 23 at the free end of the actuating lever 19 lifted above the swing shaft 13 is connected to the connecting point 24 at the free end of the actuating lever 20 protruding downward from the swing shaft 14. 21). In the illustrated embodiment the adjustment device may be a rod regulator 22. The rod regulator 22 can be configured in a known manner and can be manually released via the manual lever 25 in the illustrated embodiment. The rod regulator 22 of the embodiment shown in FIGS. 1 and 2 includes a locking head 26. The locking head 26 comprises a ratchet 27 and is pushed by a seat load compensation spring 28. The rod adjuster 22 shown in FIGS. 1 and 2 comprises a strap-type rail 29, one end of the strap-type rail 29 having a bolt at the connection point 24 of the actuating lever 20. 30 in the form of a hinge, the other end of which has a longitudinal slot 31 covering the bolt 32 at the connection point of the actuating lever 19. The bolt 32 is likewise supported in a hinged form by two plates 33 comprising strap-shaped rails between which the plates 33 are arranged in another longitudinal slot 34 of the strap-shaped rail 29. Is guided by a peg 35 penetrating through the strap-shaped rail 29 and the plate 33. The plate 33 belonging to the locking head 26 is covered on both sides by a fork-shaped release lever 36, which lever 36 on the one hand is pivotable on the shaft 37 on the plate 33. Supported and connected to the manual lever 25 on the other hand. The plate 33 is also supported by a catch 38 by an axial bolt 39, the teeth of which catch 38 can engage the racked teeth of the strap rail 29. The catch 38 also has a longitudinal slot 40 inclined towards the tooth, and a peg 41 fixed to the release lever 36 is inserted into the slot 40 as a separation hub of the catch 38. . Here, the release lever 36 is pushed in the locking direction by an accumulator not shown.

As the manual lever 25 is raised and the release lever 36 pivots clockwise, the catch 38 then emerges from the teeth of the strap rail 29 and the peg 41 and longitudinal slot 40. Ascending upward, the ratchet 27 is disengaged. Accordingly, the strap-type rail 29 is pulled out of the locking head 26 or pushed into the locking head 26 according to the seat load, thereby connecting the connecting points 23 and 24 of the actuating levers 19 and 20. The distance between the can be shortened or extended. For this reason, the actuation lever 19 and 20 or the turning support parts 15 and 18 are rotated in one direction or another direction according to the direction of action of the force exerted on the seat part frame by the sheet user, whereby the seat The subframe 17 and the seat are raised or lowered. When the desired adjustment position is reached, the ratchet 27 is locked by the catch 38 after removal of the manual lever 25 in the manner illustrated in FIG. 1, thereby adjusting the seat frame 17 and the seat. Position is secured with respect to the guide rail device 10.

In the embodiment shown in FIGS. 3 to 5, the operating levers 19 and 20 fixed to the front pivot shaft 13 and the rear pivot shaft 14 by the rod adjuster 22 and thus the pivot support part ( 15) 18 is movable on the one hand and fixed on the other hand. Also in this embodiment, the pivot support portions 15 are fixed at both end regions of the front pivot shaft 13 so as to transmit the rotation moment and protrude upwards on the longitudinal axis of the pivot shaft 13. The pivot support 15 arranged on the operating side with the rod adjuster 22 simultaneously forms an actuating lever 19, which actuates the regulating device 21 formed of the rod adjuster 22. It has a connection 42 arranged out of its connection point 23 and laterally displaced above and about the connection point 23. The connecting portion 42 is hingedly connected to the segment lever 43 by the support 16, and the segment lever has a plate 45 whose side is fixed to the seat frame 17 by a peg 44. Is pivotally supported. In addition, the segment lever 43 has a tooth 47 restricted by the stopper 48, and a partial circle of the tooth 47 is formed at a constant radius around the peg 44. In the plate 45 belonging to the seat frame 17, the tooth catch lever 50 is pivotally arranged by an axial bolt 49 fixed to the plate 45, and the tooth catch lever 50 is a toothed tooth. Has a longitudinal slot 51 inclined with respect to the tooth in its tooth region that engages the portion 47, into which the tappet 53 of the bracket 52 engages, The bracket 52 is fixed on the operating shaft 54 supported on the seat frame 17 or on its plate 45. The segment lever 43, together with the tooth catch lever 50, the bracket 52, and the operation shaft 54, is used for fixing the segment lever 43 to the plate 45 of the seat frame 17 in a liftable manner. The locking device 46 is formed. On the longitudinal side of the seat the actuating shaft 54 is firmly connected to the manual lever 55 and the manual lever 55 is pushed in the locking direction by the torsion spring 56. An auxiliary lever 57 that similarly performs the function of the operating lever at intervals with respect to the pivot support portion 15 by the actuating lever 19 is firmly connected to the front pivot shaft 13. The motor fixing plate 58 is connected to the pivot support 15 and the auxiliary lever by a peg 59 in the connection point 23 region between the pivot support 15 and the auxiliary lever 57 serving as the actuation lever 19. It is rotatably supported. A gear device 61 of a geared motor is fixed to the motor fixing plate 58, and the gear device 61 may be formed of, for example, a worm gear device. In this case, the drive shaft 63 of the rod regulator 22 formed of the spindle rod 62 is engaged into the worm gear of the gear device 61. The drive shaft 63 is a component of the spindle 64 and is supported by the gear unit 61 to be rotatable but not axially movable, thereby resulting in the connection of the gear unit and the motor fixing plate 58 to the spindle 62. Is supported at the connecting point 23 of the actuating lever 19 in the axial direction. The spindle 64 has a threaded shaft 65 fitted to the spindle nut 66 at an end opposite to the drive shaft 63, in which the permanent spindle nut 66 in the illustrated embodiment surrounds the threaded shaft 65. The sleeve 67 is formed. The sleeve 67 is supported on an actuating lever 20 fixed on the rear pivot shaft 14 by a pedestal 68 protruding from the sleeve casing laterally about its longitudinal axis on both sides. The receptacle for the pedestal 68 of the actuating lever 20 lies below the support point 69 of the pivot shaft 14 in the console plate 12. In the region of the support point 69, the pivot support 18 is firmly connected to the pivot shaft 14, as in the embodiment shown in FIGS. 1 and 2, the pivot support 18 being connected to the support 16. The seat portion frame 17 is supported in the form of a hinge.

At the end of the threaded shaft 65 is placed a ring which acts as a stopper 70 and which is fixed to the spindle 64 to limit the adjustment movement in one direction and the other.

In the area of the seat wide side in front and the seat longitudinal side opposite the rod adjuster 22 the pivot support 15 shown on the left in FIG. 5 is not only to the pivot support 15 shown on the right but also the actuating lever 19. Corresponds to the lever acting as). However, the lever 15 disposed on the left side does not have a bore forming a connection point for receiving the peg 59. This is because only the pivot support 15 is connected via the support 16, likewise with the tooth catch lever 50, to the segment lever 43 which forms the locking device on the seat longitudinal side.

Now, when the locking device 46 is placed in its operating position as shown in FIG. 3, the seat frame 17 is carried out in accordance with FIGS. 1 and 2 by adjustment of the spindle rod 62. The height can be adjusted with respect to the guide rail device 10 in the same manner as in the example. In order to perform additional tilt adjustment, the manual lever 55 is raised against the force of the traction spring 56 and thereby the spindle 52 fixed by turning the bracket 52 clockwise through the actuating shaft 54 ( In 62 the locking device 46 is released. In this case, the manual lever 55 is lifted from the teeth of the tooth 47 to the tappet 53 of the bracket 52 and the longitudinal slot 51 in the tooth catch lever 50 so that each segment lever ( 43 can pivot around the support 16 of the connection part 42 so that the front region of the seat frame 17 can be raised or lowered according to the load of the seat part. That is, the tilt of the sheet can be adjusted in addition to the height adjustment.

As described above, the illustrated embodiments are illustrative of the present invention, and the present invention is not limited to the illustrated embodiments. Many variations and other embodiments of the invention are possible. Although not explicitly claimed in the claims, all new features mentioned in the specification and / or shown in the figures are the subject of the invention.

Claims (8)

The vehicle seat portion can be raised and lowered from the bottom of the vehicle body through the pivot support portions 15 and 18 connected to each other by the pivot shafts 13 and 14 in pairs to each seat edge portion, and each pivot shaft 13 (14) is an automobile seat height adjustment device that is firmly coupled with the operation levers (19) and (20) for the connection of the height adjustment device (21), the operation being provided on the wide side portion of one side of the seat The lever 19 extends upwardly from the pivoting shaft 13 with two pivotal supports 15 mounted thereon and a connecting portion 23 of the adjusting device 21 above the center of the pivoting shaft 13. The operating lever 20 mounted on the other wide side of the seat extends downward from the swing shaft 14 on which two swing supports 18 are mounted, and has a connection portion 24 of the adjusting device 21. , The adjusting device 21 is a rod (rod) for connecting the operating levers (19, 20) to each other Is formed of 21, the rod adjuster 21 is composed of a spindle rod 62 for the endless height adjustment of the seat portion, the spindle 64 of the spindle rod is a drive shaft at one end And a threaded shaft 65 at the other end thereof, wherein the drive shaft 63 is rotatably supported relative to the connecting portion 23 of the automatic lever 19 on one side, and the threaded shaft 65 The seat height adjustment device, characterized in that the pivoting movement, but is inserted into the spindle nut (66) fixed to the other operation lever 20 so as not to rotate. 2. The actuating lever (19) according to claim 1, wherein the actuating lever (19) mounted on the wide side portion of one side of the seat is formed simultaneously as the pivot support (15), and the actuating lever (19) is a connecting portion (23) of the adjusting device (21) and In addition, the side portion has a connecting portion 42 of the segment lever 43 is pivotally connected to the seat frame 17, the locking device 46 coupled to the seat frame 17 locks the segment lever 43 Seat height adjustment device characterized in that the fixed or released to move. The toothed catch lever (50) according to claim 2, wherein the segment lever (43) is provided with a toothed portion (47) having stoppers (48) disposed at both ends thereof, and is biased by a spring (56) in the locked direction. ) Is meshed with the toothed portion (47). 4. The toothed catch lever (50) has a slot (51), wherein the tappet (53) of the bracket (52) fixed to the operating shaft (54) is engaged in the slot (51) and is operated. The shaft 54 is seat height adjustment device characterized in that the force is applied in the locking direction by the torsion spring (56). 2. A seat height adjustment device according to claim 1, characterized in that the drive shaft (63) of the rod adjuster (22) (62) is connected to the output side of the geared motor (60) (61). The geared motor (60) (61) is fixed to the motor fixing plate (58), and the motor fixing plate (58) is pivoted to form the actuating lever (19) by a peg (59). Seat height adjustment device characterized in that it is pivotally connected to an auxiliary lever (57) fixed to the pivot shaft (13) at intervals parallel to the pivot support (15). The seat height adjustment device according to claim 1, characterized in that a stopper (70) is provided at the end of the threaded shaft (65) of the spindle (64) to limit the adjustment distance. The seat height adjusting device according to claim 1, wherein the spindle nut (66) is integrally formed with the sleeve (67), and the threaded shaft (65) enters the inside of the sleeve in a contracted state of the spindle rod. .