End stop with free play elimination to improve stiffness

Patent metadata

Field	Value
Publication number	US-9981576-B2
Application number	US-201715496384-A
Country	US
Kind code	B2
Filing date	Apr 25, 2017
Priority date	May 25, 2016
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

An end stop assembly includes a pivot bracket, an end stop bracket, a strap, and a pin assembly. The pivot bracket defines a first adjustment slot and a first pivot hole. The end stop bracket defines a second adjustment slot and a second pivot hole. The end stop bracket has a first stop tab positioned about the second pivot hole. The second pivot hole is held concentrically to the first pivot hole. The strap defines an attachment hole. The pin assembly holds the strap and end stop bracket to the pivot bracket. The pin assembly is positioned through the first adjustment slot, the second adjustment slot and the attachment hole such that the pin assembly is movable by along the first adjustment slot and the second adjustment slot from a first position to a second position by pulling the strap.

First claim

What is claimed is:

1. An end stop assembly for a vehicle seatback frame, the end stop assembly comprising:
a pivot bracket having one or more attachment sections for securing the pivot bracket to a vehicle, the pivot bracket defining a first adjustment slot and a first pivot hole;
an end stop bracket defining a second adjustment slot and a second pivot hole, the end stop bracket having a first stop tab positioned about the second pivot hole, the second pivot hole being held concentrically to the first pivot hole;
a strap defining an attachment hole; and
a pin assembly holding the strap and end stop bracket to the pivot bracket, the pin assembly being positioned through the first adjustment slot and the second adjustment slot and the attachment hole such that the pin assembly is movable by along the first adjustment slot and the second adjustment slot from a first position to a second position by pulling the strap, the first position being more distant from the first pivot hole than the second position wherein when the pin assembly is at the first position, the first stop tab is positioned at a first tab position and when the pin assembly is positioned at the second position, the first stop tab is positioned at a second tab position that is rotated with respect to the first tab position.

2. The end stop assembly of claim 1 further comprising a pivot bushing positioned that holds the second pivot hole concentrically to the first pivot hole.

3. The end stop assembly of claim 1 wherein the strap is plastic.

4. The end stop assembly of claim 1 wherein the strap includes a head section, an elongated section extending from the head section, and a connection section that defines the attachment hole, the connection section being positioned on an opposite end of the elongated section than the head section.

5. The end stop assembly of claim 1 wherein the first adjustment slot has a first longitudinal axis and the second adjustment slot has a second longitudinal axis, the first longitudinal axis being at a first angle with respect to the second longitudinal axis when the pin assembly is in the first position.

6. The end stop assembly of claim 1 wherein the end stop assembly is adapted to receive a pivot pin attached to a seat back frame the pivot pin having a pivot rod section and an end section, the end section having a second stop tab that face the first stop tab with a gap between the first stop tab and the second stop tab when the pin assembly is in the first position.

7. The end stop assembly of claim 6 wherein the second stop tab contacts the first stop tab when the strap is pulled to the second position.

8. The end stop assembly of claim 1 , wherein the strap has a weak point.

9. A vehicle seat comprising:
a seat bottom;
a seatback having a seatback frame and a pivot pin attached to the seatback frame, the pivot pin having a pivot rod section and an end section; and
an end stop assembly attached to the seatback frame, the end stop assembly including:
a pivot bracket having one or more attachment sections for securing the pivot bracket to a vehicle, the pivot bracket defining a first adjustment slot and a first pivot hole;
an end stop bracket defining a second adjustment slot and a second pivot hole, the end stop bracket having a first stop tab positioned about the second pivot hole, the second pivot hole being held concentrically to the first pivot hole;
a tear-away strap defining an attachment hole and having a weak point; and
a pin assembly holding the tear-away strap and end stop bracket to the pivot bracket, the pin assembly being positioned through the first adjustment slot and the second adjustment slot and the attachment hole such that the pin assembly is movable by along the first adjustment slot and the second adjustment slot from a first position to a second position by pulling the tear-away strap, the first position being more distant from the first pivot hole than the second position wherein when the pin assembly is at the first position, the first stop tab is positioned at a first tab position and when the pin assembly is positioned at the second position, the first stop tab is positioned at a second tab position that is rotated with respect to the first tab position, wherein the end section of the pivot pin has a second stop tab that face the first stop tab with a gap between the first tab stop and the second tab stop when the pin assembly is in the first position.

10. The vehicle seat of claim 9 further comprising an upper corner lock.

11. The vehicle seat of claim 9 wherein the end stop assembly further comprises a pivot bushing positioned that holds the second pivot hole concentrically to the first pivot hole.

12. The vehicle seat of claim 9 wherein the tear-away strap includes a head section, an elongated section extending from the head section, and a connection section that defines the attachment hole, the connection section being positioned on an opposite end of the elongated section than the head section.

13. The vehicle seat of claim 9 wherein the first adjustment slot has a first longitudinal axis and the second adjustment slot has a second longitudinal axis, the first longitudinal axis being at a first angle with respect to the second longitudinal axis when the pin assembly is in the first position.

14. The vehicle seat of claim 9 wherein the second stop tab contacts the first stop tab when the tear-away strap is pulled to the second position.

15. A method of assembling a vehicle seat, the method comprising:
a) attaching an end stop assembly to a vehicle floor, the end stop assembly including:
a pivot bracket having one or more attachment sections for securing the pivot bracket to a vehicle, the pivot bracket defining a first adjustment slot and a first pivot hole;
an end stop bracket defining a second adjustment slot and a second pivot hole, the end stop bracket having a first stop tab positioned about the second pivot hole, the second pivot hole being held concentrically to the first pivot hole;
a strap defining an attachment hole;
a pin assembly holding the strap and end stop bracket to the pivot bracket, the pin assembly being positioned through the first adjustment slot and the second adjustment slot and the attachment hole such that the pin assembly is movable by along the first adjustment slot and the second adjustment slot from a first position to a second position by pulling the strap, the first position being more distant from the first pivot hole than the second position wherein when the pin assembly is at the first position, the first stop tab is positioned at a first tab position and when the pin assembly is positioned at the second position, the first stop tab is positioned at a second tab position that is rotated with respect to the first tab position; and
b) attaching a seatback frame to the end stop assembly, the seatback frame having a pivot pin extending from a bottom edge of the seatback frame, the pivot pin having a pivot rod section and an end section, the end section having a second stop tab, the seatback frame being attached to the end stop assembly by positioning the pivot pin in the first pivot hole such that there is a gap between the second tab stop and the second tab stop; and
c) pulling the strap such that the first tab stop contacts the second tab stop.

16. The method of claim 15 wherein the strap has a weak point and in step c), the pin assembly is pulled by the strap towards the second pivot hole causing rotation of the end stop bracket until contact the first stop tab contacts the second stop tab and the strap separates at t

Assignees

• Lear Corp

Inventors

• Tarade Kishore
• Pater Rafal

Classifications

• B60N2/433 Primary

  Safety locks for back-rests, e.g. with locking bars activated by inertia · CPC title

• B60N2205/20

  Measures for elimination or compensation of play or backlash · CPC title

• B60N2/015

  Attaching seats directly to vehicle chassis · CPC title

• B60N2/36

  into a loading platform {(B60N2/065 takes precedence)} · CPC title

• B60N2/20

  the back-rest being tiltable, e.g. to permit easy access (B60N2/04, B60N2/22 {, B60N2/3002} take precedence) · CPC title