Transmission drive unit of a seat adjusting device

Patent metadata

Field	Value
Publication number	US-10190664-B2
Application number	US-201514927424-A
Country	US
Kind code	B2
Filing date	Oct 29, 2015
Priority date	Oct 29, 2014
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A transmission drive unit of a seat adjusting device, comprising an electrical drive motor (2), a spindle drive (3) comprising a spindle (30) which is able to be driven by the drive motor (2), a nut (31) which is connected to a first seat component, and a housing (4), wherein the housing (4) is produced from a plastic material, the housing (4) comprises a first interface (5) for attaching to a second seat component, and the housing (4) comprises a first bearing surface (7) for bearing the spindle (30) of the spindle drive (3).

First claim

What is claimed is:

1. A transmission drive unit ( 1 ) of a seat adjusting device comprising:
an electrical drive motor ( 2 ),
a spindle drive ( 3 ) comprising a spindle ( 30 ) which is configured to be driven by the drive
motor ( 2 ) and a nut ( 31 ) which is connected to a first seat component,
a housing ( 4 ), wherein the housing ( 4 ) is produced from a plastic material, the housing ( 4 ) including a first interface ( 5 ) configured to be attached to a second seat component, wherein the first interface ( 5 ) includes a through-hole extending through the plastic housing ( 4 ) and configured to receive a hinge pin, and the housing ( 4 ) further includes a first bearing surface ( 7 ) bearing the spindle ( 30 ) of the spindle drive ( 3 ), and
a metallic reinforcing element ( 13 ) arranged on an outer face of the housing ( 4 ) and extending partially around the first interface ( 5 ).

2. The unit according to claim 1 , further comprising a second bearing surface ( 22 ) on the housing ( 4 ), said second bearing surface bearing an output shaft ( 21 ) of the drive motor ( 2 ).

3. The unit according to claim 1 , further comprising a cover ( 40 ) closing the housing ( 4 ), wherein the cover ( 40 ) is produced from plastic.

4. The unit according to claim 3 , characterized in that the cover ( 40 ) is fixed to the housing ( 4 ) by a first metal screw bolt ( 11 ) and a second metal screw bolt ( 12 ), wherein a longitudinal axis of the spindle ( 30 ) intersects in a perpendicular manner a plane (E) in which the first and second screw bolts ( 11 , 12 ) are located.

5. The unit according to claim 4 , characterized in that the first and second screw bolts ( 11 , 12 ) extend over an entire width (B) of the housing ( 4 ).

6. The unit according to claim 4 , characterized in that the first and second screw bolts ( 11 , 12 ) are arranged relative to an axial direction (X-X) of the spindle ( 30 ) between a first spindle end ( 32 ) and the first bearing surface ( 7 ) on the housing ( 4 ).

7. The unit according to claim 4 , further comprising a worm gear-axial stop ( 81 ) which is arranged on the spindle ( 30 ), wherein the spindle ( 30 ) extends along a first, axial direction (X-X), wherein the worm gear-axial stop ( 81 ) extends along a second direction that is perpendicular to the axial direction (X-X), wherein the worm gear-axial stop ( 81 ) extends a distance along the second direction that is greater than a distance between the first and second screw bolts along the second direction, such that the worm gear-axial stop ( 81 ) at least partially covers the first and second screw bolts along the first, axial direction (X-X).

8. The unit according to claim 4 , further comprising a worm gear-axial stop ( 81 ) which is arranged on the spindle ( 30 ), wherein a complete covering is present relative to an axial direction (X-X) between the first and second screw bolts and the worm gear-axial stop ( 81 ).

9. The unit according to claim 8 , further comprising a reinforcing element ( 13 ) made of metal arranged on an outer face of the housing ( 4 ).

10. The unit according to claim 9 , characterized in that a transition fit or a clearance fit is formed between the reinforcing element ( 13 ) and the housing ( 4 ).

11. The unit according to claim 9 , characterized in that the reinforcing element ( 13 ) is substantially C-shaped, with a first end region ( 18 ) and a second end region ( 19 ), wherein the first and second screw bolts ( 11 , 12 ) connect the first and second end regions ( 18 , 19 ) together.

12. The unit according to claim 9 , further comprising a disk-shaped support component ( 27 ) made of metal, which together with the reinforcing element ( 13 ) encloses the housing ( 9 ).

13. The unit according to claim 12 , characterized in that the disk-shaped support element ( 27 ) has a spring region ( 28 ).

14. The unit according to claim 12 , characterized in that the reinforcing element ( 13 ) and the disk-shaped support component ( 27 ) are connected by screw bolts ( 29 ) extending in an axial direction (X-X) of the spindle, wherein the spindle extends through the disk-shaped support element ( 27 ) and the worm gear-axial stop ( 81 ) is arranged inside the disk-shaped support component ( 27 ) and the reinforcing element ( 13 ).

15. The unit according to claim 1 , characterized in that a transition fit or a clearance fit is formed between the reinforcing element ( 13 ) and the housing ( 4 ).

16. The unit according to claim 1 , characterized in that the reinforcing element ( 13 ) is substantially C-shaped, with a first end region ( 18 ) and a second end region ( 19 ), wherein first and second screw bolts ( 11 , 12 ) connect the first and second end regions ( 18 , 19 ) together.

17. The unit according to claim 1 , further comprising a disk-shaped support component ( 27 ) which together with the reinforcing element ( 13 ) encloses the housing ( 9 ).

18. The unit according to claim 17 , characterized in that the disk-shaped support element ( 27 ) has a spring region ( 28 ).

19. The unit according to claim 17 , characterized in that the reinforcing element ( 13 ) and the disk-shaped support component ( 27 ) are connected by screw bolts ( 29 ) extending in an axial direction (X-X) of the spindle, wherein the spindle extends through the disk-shaped support element ( 27 ).

20. A transmission drive unit ( 1 ) of a seat adjusting device comprising:
an electrical drive motor ( 2 ),
a spindle drive ( 3 ) comprising a spindle ( 30 ) which is configured to be driven by the drive motor ( 2 ) and a nut ( 31 ) which is connected to a first seat component,
a housing ( 4 ), wherein the housing ( 4 ) is produced from a plastic material, the housing ( 4 ) including a first interface ( 5 ) configured to be attached to a second seat component, and the housing ( 4 ) including first bearing surface ( 7 ) bearing the spindle ( 30 ) of the spindle drive ( 3 ),
a cover ( 40 ) closing the housing ( 4 ), wherein the cover ( 40 ) is produced from plastic, wherein the cover ( 40 ) is fixed to the housing ( 4 ) by a first metal screw bolt ( 11 ) and a second metal screw bolt ( 12 ), wherein a longitudinal axis of the spindle ( 30 ) intersects in a perpendicular manner a plane (E) in which the first and second screw bolts ( 11 , 12 ) are located, and
a worm gear-axial stop ( 81 ) which is arranged on the spindle ( 30 ), wherein the spindle ( 30 ) extends along a first, axial direction (X-X), wherein the worm gear-axial stop ( 81 ) extends along a second direction that is perpendicular to the axial direction (X-X), wherein the worm gear-axial stop ( 81 ) extends a distance along the second direction that is greater than a distance between the first and second screw bolts along the second direction, such that the worm gear-axial stop ( 81 ) at least partially covers the first and second screw bolts along the first, axial direction (X-X).

21. A transmission drive unit ( 1 ) of a seat adjusting device comprising:
an electrical drive motor ( 2 ),
a spindle drive ( 3 ) comprising a spindle ( 30 ) which is configured to be driven by the drive motor ( 2 ) and a nut ( 31 ) which is connected to a first seat component,
a housing ( 4 ), wherein the housing ( 4 ) is produced from a plastic material, the housing ( 4 ) including a first interface ( 5 ) configured to be attached to a second seat component, and the housing ( 4 ) including first bearing surface ( 7 ) bearing the spindle ( 30 ) of the spindle drive ( 3 ), and
a reinforcing element ( 13 ) arranged

Assignees

• Bosch Gmbh Robert

Inventors

• Riedinger Markus
• Stock Andreas
• Peter Gilles
• Angerer Christof
• Lopez Allan Dassaev Cadena
• Ortiz Luis Angel Ramirez

Classifications

• F16H25/20 Primary

  Screw mechanisms (with automatic reversal F16H25/12) · CPC title

• F16H2025/209

  using worm gears · CPC title

• B60N2002/0236

  Operations & Transport · mapped topic

• F16H2025/2084

  Perpendicular arrangement of drive motor to screw axis · CPC title

• F16H2025/2031

  Actuator casings · CPC title