HEADREST GUIDE AND VEHICLE SEAT

• US 20200130549A1
• Filed: 03/12/2018
• Published: 04/30/2020
• Est. Priority Date: 03/13/2017
• Status: Active Grant

• Current Assignee: TS Tech Company Limited
• Original Assignee: TS Tech Company Limited
• Inventors: IZUMIDA, Makoto, KUBO, Naoki, NAKAMURA, Mitsuru
• Granted Patent: US 10,940,783 B2
• Time in Patent Office: Days
• CPC Class Codes: B60N 2/00 Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles railway seats B61D33/00; cycle seats B62J1/00; aircraft seats B64D11/06, B64D25/04, B64D25/10
• CPC Class Codes: B60N 2/80 Head-rests
• CPC Class Codes: B60N 2/809 vertically slidable
• CPC Class Codes: B60N 2/897 with sleeves located in the back-rest for guiding the rods of the head-rest

Abstract

This headrest guide 52 for holding a pillar 43 protruding from a headrest 4 is provided with cylindrical section 61 having formed therein a through-hole 63 which extends in a longitudinal direction and into which the pillar 43 is inserted. The cylindrical section 61 has a protrusion 64 provided on the inner peripheral surface of the through-hole 63 and coming in contact with the pillar 43 inserted in the through-hole 63. The protrusion 64 extends in the longitudinal direction of the cylindrical section 61, and the length of the protrusion 64 in the top-bottom direction is set to be greater than the length thereof in the left-right or front-rear direction. The configuration makes it possible to suppress the rattling of the headrest because of an increase in the region of contact with the pillar inserted in the through-hole.

Claims

1. A headrest guide that holds a pillar projecting from a headrest, the headrest guide comprising:

tubular portion with a through-hole which is formed along a length direction and through which the pillar is inserted,

wherein

the tubular portion has a protrusion provided on an inner peripheral surface of the through-hole to abut on the pillar inserted through the through-hole, and

the protrusion extends along a longitudinal direction of the tubular portion, and a length in a vertical direction of the protrusion is set to be longer than a length in a lateral or fore-aft direction of the protrusion.

3. The headrest guide according to claim 1, wherein the protrusion projects from the inner peripheral surface of the through-hole along the fore-aft direction.

4. The headrest guide according to claim 1, wherein the tubular portion has a second protrusion provided at a position opposite to the protrusion in the fore-aft direction on the inner peripheral surface of the through-hole.

5. The headrest guide according to claim 4, wherein a length in the vertical direction of the second protrusion is set to be shorter than a length in the vertical direction of the protrusion.

6. The headrest guide according to claim 4, wherein a length in the lateral direction of the second protrusion is set to be shorter than a length in the lateral direction of the protrusion.

7. The headrest guide according to claim 1, wherein

the protrusion is provided below a central part in the vertical direction of the tubular portion, and

the tubular portion has an upper protrusion spaced from the protrusion in the vertical direction on the inner peripheral surface of the through-hole and provided above a central part in the vertical direction of the tubular portion.

8. The headrest guide according to claim 7, wherein a length in the vertical direction of the upper protrusion is set to be shorter than the length the vertical direction of the protrusion.

9. The headrest guide according to claim 7, wherein

a plurality of the upper protrusions are provided on the inner peripheral surface of the through-hole, and

the plurality of upper protrusions are arranged separately on left and right of the protrusion in a case of seeing through the tubular portion in a direction of seeing the protrusion in front.

10. A vehicle seat, comprising:

the headrest guide according to claim 1;

a seat cushion that supports buttocks of an occupant;

seatback attached rotatably to the seat cushion; and

a headrest provided at an upper part the seatback,

wherein

a seat frame constituting the seatback is provided with a holder that holds part of the tubular portion of the headrest guide, and

at least part of the protrusion is provided on the inner peripheral surface of the through-hole in a region not held by the holder in the tubular portion.

2. The headrest guide according to claim I, wherein the protrusion is provided on the inner peripheral surface of the through-hole in a range including a vicinity of a lower end part of the tubular portion.