Headrest holder and fixing structure therefor

Patent metadata

Field	Value
Publication number	US-12545163-B2
Application number	US-202418645530-A
Country	US
Kind code	B2
Filing date	Apr 25, 2024
Priority date	Apr 28, 2023
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

A plurality of pressing portions 38 protrude inward in a radial direction from an inner peripheral surface of a tubular main body portion 35 (part of a tube body) and are each fixed at both ends thereof in an up-down direction to the main body portion 35 . Since the plurality of pressing portions 38 are aligned in the up-down direction, a stay 22 or 23 can be inhibited from oscillating with a contact portion between one pressing portion 38 and the stay 22 or 23 as a fulcrum. As a result, rattling of the stay 22 or 23 relative to a headrest holder 30 or 31 can be suppressed.

First claim

The invention claimed is:

1 . A headrest holder to be attached to an upper frame of a back frame of a passenger seat, the headrest holder comprising:
a tube body into which a stay of a headrest capable of supporting a head of a seated person from back is inserted from an upper end thereof; and a plurality of pressing portions protruding inward in a radial direction from an inner peripheral surface of the tube body so as to be pressed against the stay, and formed so as to be aligned in an up-down direction, wherein each of the pressing portions is fixed at both ends thereof in the up-down direction to the tube body; wherein the tube body includes: a tubular upper end portion forming an upper end side of the tube body, and a tubular main body portion extending downward from the upper end portion, a projection portion protrudes inward in the radial direction from a front side of an inner peripheral surface of the upper end portion, and the pressing portions protrude inward in the radial direction from a back side of an inner peripheral surface of the main body portion; wherein the headrest holder has a locking mechanism for fixing a vertical position of the stay by engaging a groove provided on an outer peripheral surface of the stay, or does not have the locking mechanism, and the projection portion is provided separately from the locking mechanism when the headrest holder has the locking mechanism.

2 . The headrest holder according to claim 1 , wherein each of the pressing portions includes
a pair of inclined portions inclined inward in the radial direction as extending from both ends in the up-down direction toward each other, and a contact portion connecting the pair of inclined portions in the up-down direction and capable of coming into surface contact with the stay.

3 . The headrest holder according to claim 1 , further comprising a second projection portion protruding inward in the radial direction from the inner peripheral surface of the tube body, making a pair of projection portions,
wherein the pair of projection portions are arranged symmetrically in a circumferential direction at positions opposing the pressing portions when viewed in an axis direction of the tube body.

4 . The headrest holder according to claim 1 , wherein a cut portion is formed on one side in a circumferential direction of the plurality of pressing portions in the tube body from the one side to positions opposing the pressing portion, over the circumferential direction, so as to be continuous in the up-down direction.

5 . The headrest holder according to claim 1 , wherein
the headrest holder is a headrest holder to be attached to the upper frame including an upper surface portion and a lower surface portion spaced apart from each other in the up-down direction, the headrest holder comprises
an upper fitting portion to be fitted into a hole provided in the upper surface portion, and
a lower fitting portion to be fitted into a hole provided in the lower surface portion, and
the pressing portions are formed at positions away from the upper fitting portion and the lower fitting portion in the up-down direction.

6 . The headrest holder according to claim 5 , further comprising:
an upper narrow projection portion protruding from the front side of an outer peripheral surface of the upper fitting portion; an upper thick projection portion protruding from the back side of the outer peripheral surface of the upper fitting portion and having a larger width in a circumferential direction than the upper narrow projection portion; a lower narrow projection portion protruding from the back side of an outer peripheral surface of the lower fitting portion; and a lower thick projection portion protruding from the front side of the outer peripheral surface of the lower fitting portion and having a larger width in the circumferential direction than the lower narrow projection portion.

7 . A headrest holder fixing structure comprising the headrest holder according to claim 5 and an upper frame to which the headrest holder is attached, wherein
the upper frame includes
an upper surface portion having a hole into which the upper fitting portion is fitted, and
a lower surface portion placed below the upper surface portion so as to be spaced apart from the upper surface portion and having a hole into which the lower fitting portion is fitted, and

the pressing portions are located away from the upper frame.

8 . A headrest holder to be attached to an upper frame of a back frame of a passenger seat, the headrest holder comprising:
a tube body into which a stay of a headrest capable of supporting a head of a seated person from back is inserted from an upper end thereof; and a plurality of pressing portions protruding inward in a radial direction from an inner peripheral surface of the tube body so as to be pressed against the stay, and formed so as to be aligned in an up-down direction, wherein each of the pressing portions is fixed at both ends thereof in the up-down direction to the tube body; further comprising a pair of projection portions protruding inward in the radial direction from the inner peripheral surface of the tube body, wherein the pair of projection portions are arranged symmetrically in a circumferential direction at positions opposing the pressing portions when viewed in an axis direction of the tube body.

Assignees

• Tachi S Co

Inventors

• Myochin Keita
• Yokoyama Takashi
• Koike Atsushi
• Suzuki Shogo

Classifications

• B60N2205/20

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

• B60N2/897 Primary

  with sleeves located in the back-rest for guiding the rods of the head-rest · CPC title

• B60N2/818 Primary

  with stepwise positioning · CPC title

• B60N2/894

  with rods solidly attached to the back-rest · CPC title

• B60N2/812 Primary

  characterised by their locking devices · CPC title