Conveyance seat device

Patent metadata

Field	Value
Publication number	US-12168494-B2
Application number	US-202017605262-A
Country	US
Kind code	B2
Filing date	Apr 20, 2020
Priority date	Apr 22, 2019
Publication date	Dec 17, 2024
Grant date	Dec 17, 2024

Abstract

A conveyance seat includes a saddle-type seat on which an occupant sits to straddle and a seat height adjustment unit which is attached below the seat and is able to adjust a height position of the seat. The seat height adjustment unit includes a rotation link which rotates together with the seat with respect to a chassis to adjust a height position of the seat, an upper link support member that is provided between the seat and the rotation link and is used so that an upper end portion of the rotation link is attached thereto, a lower link support member that is provided between the rotation link and the chassis and is used so that a lower end portion of the rotation link is attached thereto, and a flexible cover member that covers the rotation link from the outside in a front to back direction of the seat and a width direction of the seat.

First claim

The invention claimed is:

1. A conveyance seat device, comprising:
a saddle-type seat on which an occupant of a conveyance sits to straddle; and
a seat height adjustment unit which is attached below the seat and is able to adjust a height position of the seat,
wherein the seat height adjustment unit includes:
a rotation link which rotates together with the seat with respect to a main body of the conveyance to adjust the height position of the seat,
a motor device which rotates the rotation link,
a harness which supplies electric power to the motor device,
a flexible cover member that covers the rotation link and the motor device from the outside in a front to back direction of the seat and a width direction of the seat,
a plate-shaped upper link support member provided between the seat and the rotation link and is used so that an upper end portion of the rotation link is attached thereto, and
a lower link support member provided between the rotation link and the main body of the conveyance and is used so that a lower end portion of the rotation link is attached thereto;

wherein the rotation link and the motor device are covered by the cover member, the upper link support member, and the lower link support member; and
wherein a harness passage hole for inserting the harness is formed in a bottom wall portion of the lower link support member.

2. The conveyance seat device according to claim 1 ,
wherein the cover member has a bag shape and is configured to wrap the rotation link, the upper link support member, and the lower link support member.

3. The conveyance seat device according to claim 1 ,
wherein the cover member is a polyhedron which is formed by joining terminals of a plurality of seat materials, and
wherein a portion formed by joining the terminals is located on a ridge of the cover member.

4. The conveyance seat device according to claim 1 ,
wherein the seat height adjustment unit is able to move the seat between a normal position and an upper position in which the seat is moved above the normal position,
wherein the cover member changes its shape in accordance with a movement operation of the seat and is configured to be folded when the seat moves from the upper position to the normal position, and
wherein the cover member includes a cover overhanging portion which is provided so that a lateral portion corresponding to the rotation link in the cover member projects outward when the cover member is folded.

5. The conveyance seat device according to claim 4 ,
wherein the cover overhanging portion is formed by bending a part of the lateral portion of the cover member outward and is disposed at a peripheral position of a corner portion located at a position closest to the rotation link among a plurality of corner portions in the lateral portion of the cover member.

6. The conveyance seat device according to claim 5 ,
wherein the cover overhanging portion is formed by joining the bent portion and is disposed between two ridges defining the corner portion in the lateral portion of the cover member.

7. The conveyance seat device according to claim 6 ,
wherein the rotation link includes a front link and a rear link which are disposed at different positions in the front to back direction of the seat, and
wherein the cover overhanging portion is disposed at a lateral portion corresponding to a link serving as a drive link in the front link and the rear link and extends along a center line between two ridges defining the corner portion while starting from the corner portion located at a position closest to the drive link in the lateral portion of the cover member.

8. The conveyance seat device according to claim 1 ,
wherein each of an upper surface and a bottom surface of the cover member is provided with an opening hole taking in or taking out components of the seat height adjustment unit,
wherein the upper opening hole formed in the upper surface of the cover member is disposed at a position corresponding to an upper surface of the upper link support member, and
wherein the lower opening hole formed in the bottom surface of the cover member is disposed at a position corresponding to a bottom surface of the lower link support member.

9. The conveyance seat device according to claim 8 ,
wherein a center hole portion provided at a center portion of each of the upper surface and the bottom surface of the cover member and a plurality of slit hole portions radially extending from the center hole portion and having a slit shape are formed as the opening hole formed in each of the upper surface and the bottom surface of the cover member,
wherein the upper surface and the bottom surface of the cover member are respectively provided with an upper cover attachment portion and a lower cover attachment portion used to be attached to the upper link support member and the lower link support member, and
wherein each of the upper cover attachment portion and the lower cover attachment portion is disposed between the slit hole portions formed to be adjacent to each other in the surface of the cover member.

10. The conveyance seat device according to claim 1 , further comprising:
vibration suppressing members that are attached between the seat height adjustment unit and the main body of the conveyance in an up to down direction and suppresses vibration transmitted from the main body of the conveyance to the seat height adjustment unit,
wherein the vibration suppressing members are arranged at predetermined intervals in the front to back direction of the seat and the width direction of the seat.

11. The conveyance seat device according to claim 10 ,
wherein the seat height adjustment unit includes a chassis attachment plate which is attached onto the main body of the conveyance,
wherein a chassis assembly portion for vertically assembling to an assembled portion provided in the main body of the conveyance is formed in the chassis attachment plate, and
wherein the vibration suppressing member is attached to the chassis assembly portion or the assembled portion.

12. The conveyance seat device according to claim 11 ,
wherein the chassis attachment plate is attached onto the main body of the conveyance by assembling an assembly bolt while a chassis assembly hole serving as the chassis assembly portion and an assembly hole serving as the assembled portion communicate with each other,
wherein the vibration suppressing member is fitted and attached to the chassis assembly hole, and
wherein the vibration suppressing member includes a through hole through which the assembly bolt penetrates.

13. The conveyance seat device according to claim 11 ,
wherein the seat height adjustment unit includes a lower link support member that is provided between the rotation link and the chassis attachment plate and is used so that a lower end portion of the rotation link is attached thereto,
wherein the chassis attachment plate is provided with an attachment portion for vertically attaching to an attached portion provided in the lower link support member,
wherein the vibration suppressing member includes a first vibration suppressing member that is attached to the chassis assembly portion or the assembled portion and a second vibration suppressing member that is attached to the attachment portion or the attached portion, and
wherein a plurality of the first vibration suppressing members is arranged to sandwich the second vibration suppressing member in the front to back direction of the seat and the width direction of the seat.

14. The conveyance seat device according to claim 1 , wherein:
the lower link support member

Assignees

• Ts Tech Co Ltd

Inventors

• Ogawa Tatsuro

Classifications

• B60N2/02246

  Electric motors therefor · CPC title

• B60N2/165

  Gear wheel driven mechanism · CPC title

• B60N2/1615

  Parallelogram-like structure · CPC title

• B62K2201/02

  Rubber springs · CPC title

• B62J2001/085

  Seat pillars having mechanisms to vary seat height, independently of the cycle frame · CPC title