PASSENGER'S WEIGHT MEASUREMENT DEVICE FOR VEHICLE SEAT

• US 20090301794A1
• Filed: 08/05/2009
• Published: 12/10/2009
• Est. Priority Date: 07/30/2004
• Status: Active Grant

• Current Assignee: TS Tech Company Limited
• Original Assignee: TS Tech Company Limited
• Inventors: ENDO, Shigeru, Sato, Kenji
• Granted Patent: US 8,002,071 B2
• Time in Patent Office: Days
• US Class Current: 177/136
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60N 2/0732 Attachment of seat frame to the slide, e.g. eyelets
• CPC Class Codes: B60N 2/4263 with anti-submarining systems
• CPC Class Codes: B60N 2/68 Seat frames
• CPC Class Codes: B60N 2/686 Panel like structures
• CPC Class Codes: B60R 21/015 including means for detecting the presence or position of passengers, passenger seats or child seats , and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
• CPC Class Codes: B60R 21/01512 Passenger detection systems
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means
• CPC Class Codes: B60R 21/0152 using strain gauges
• CPC Class Codes: G01D 11/30 Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
• CPC Class Codes: G01G 19/08 for incorporation in vehicles
• CPC Class Codes: G01G 19/4142 for controlling activation of safety devices, e.g. airbag systems electrical circuits for triggering safety arrangements in case of vehicle accidents B60R21/015
• CPC Class Codes: G01L 5/00 Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes

Abstract

To realizes an easy maintenance of the load sensor.

A passenger'"'"'s weight measurement device 1 comprises a left and right pair of fixed lower rails 3 which are fixed on the vehicle floor, a left and right pair of movable upper rails 4 which are disposed to move in a front-and-rear direction on the fixed lower rail 3, load sensors 50 and 60 which are fixed to an upper surface of the right movable upper rail 4, load sensors 70 and 80 which are disposed on the movable upper rail 4 to be movable in a left-and-right direction with respect to the right movable upper rail 4, a sub frame 110 which is mounted on the load sensors 50, 60, 70, and 80, side frames 141 and 142 which are welded to the sub frame 110, and a pan frame 143 which is detachably disposed to the side frames 141 and 142 to cover the front of the side frames 141 and 142. A gouged section 151 is formed on the side frame 141.

Claims

1. A passenger'"'"'s weight measurement device for a vehicle seat, comprising:

a pair of right and left frame members for supporting the vehicle seat, the frame members extending in a front-and-rear direction;

load sensors which are mounted on a front portion and a rear portion of each of the frame members;

a first connecting member for connecting between rear load sensor attachment portions of the pair of right and left frame members, the rear load sensor attachment portions attaching rear load sensors which are mounted to the rear portion of each frame member; and

a second connecting member for connecting the pair of right and left frame members in front of the first connecting member;

wherein a middle portion of the first connecting member is disposed higher with respect to a plane of the frame members than the rear load sensor attachment portions, and

wherein a middle portion of the second connecting member is disposed at a position lower with respect to a plane of the frame members than front load sensor attachment portions for attaching front load sensors mounted to the front portion of each frame member.

2. The passenger'"'"'s weight measurement device as claimed in claim 1, wherein both end attachment portions of the second connecting member are arranged lower than both end attachment portions of the first connecting member.

3. The passenger'"'"'s weight measurement device as claimed in claim 1, wherein in at least one frame member of the pair of frame members, a gouged portion is provided that faces one of the load sensors.

4. The passenger'"'"'s weight measurement device as claimed in claim 3, wherein the gouged portion is provided outside one of the load sensors.

13. The passenger'"'"'s weight measurement device as claimed in claim 1, wherein a hole portion is formed at each of both end portions of the second connecting member.

16. The passenger'"'"'s weight measurement device as claimed in claim 1, wherein a cross section of a fixed frame for connecting between an upper part of the front sensor attachment portion and an upper part of the rear load sensor attachment portion is formed in substantially a U-shape.

17. The passenger'"'"'s weight measurement device as claimed in claim 16, wherein an elongated hole that is elongated in the front-and-rear direction is formed in the fixed frame.

20. The passenger'"'"'s weight measurement device as claimed in claim 1, wherein connectors of the front load sensors attached to the pair of the frame members are disposed to face rearward along each frame member, and connectors of the rear load sensors attached to the pair of the frame members are disposed to face frontward along each frame member.

5. A passenger'"'"'s weight measurement device for a vehicle seat, comprising:

a pair of right and left frame members for supporting the vehicle seat, the frame members extending in a front-and-rear direction;

load sensors which are mounted on a front portion and a rear portion of each frame member;

a first connecting member for connecting between rear load sensor attachment portions of the pair of right and left frame members, the rear load sensor attachment portions attaching rear load sensors which are mounted on the rear portion of each frame member; and

a second connecting member for connecting the pair of right and left frame members in front of the first connecting member;

wherein a middle portion of the first connecting member is disposed higher with respect to a plane of the frame members than the rear load sensor attachment portions,

wherein a middle portion of the second connecting member is disposed lower with respect to a plane of the frame members than front load sensor attachment portions for attaching front load sensors mounted on the front portion of each frame member, and

wherein the middle portion of the second connecting member is disposed lower with respect to a plane of the frame members than lower surfaces of the pair of right and left frame members.

6. The passenger'"'"'s weight measurement device as claimed in claim 5, wherein both end attachment portions of the second connecting member are arranged lower than both end attachment portions of the first connecting member.

7. The passenger'"'"'s weight measurement device as claimed in claim 5, wherein in at least one frame member of the pair of frame members, a gouged portion is provided that faces one of the load sensors.

8. The passenger'"'"'s weight measurement device as claimed in claim 7, wherein the gouged portion is provided outside one of the load sensors.

14. The passenger'"'"'s weight measurement device as claimed in claim 5, wherein a hole portion is formed at each of both end portions of the second connecting member.

18. The passenger'"'"'s weight measurement device as claimed in claim 5, wherein a cross section of a fixed frame for connecting between an upper part of the front sensor attachment portion and an upper part of the rear load sensor attachment portion is formed in substantially a U-shape.

19. The passenger'"'"'s weight measurement device as claimed in claim 18, wherein an elongated hole that is elongated in the front-and-rear direction is formed in the fixed frame.

9. A passenger'"'"'s weight measurement device for a vehicle seat, comprising:

a pair of right and left frame members for supporting the vehicle seat, the frame members extending in a front-and-rear direction;

load sensors which are mounted to a front portion and a rear portion of each frame member;

a first connecting member for connecting between rear load sensor attachment portions of the pair of right and left frame members, the rear load sensor attachment portions attaching rear load sensors which are mounted on the rear portion of each frame member; and

a second connecting member for connecting the pair of right and left frame members in front of the first connecting member;

wherein a middle portion of the first connecting member is disposed higher with respect to a plane of the frame members than the rear load sensor attachment portions,

wherein a middle portion of the second connecting member is disposed lower with respect to a plane of the frame members than front load sensor attachment portions for attaching front load sensors mounted to the front portion of each frame member, and

wherein both end portions of the second connecting member are wider than the middle portion of the second connecting member.

10. The passenger'"'"'s weight measurement device as claimed in claim 9, wherein the middle portion of the second connecting member is disposed lower than lower surfaces of the pair of right and left frame members.

11. The passenger'"'"'s weight measurement device as claimed in claim 9, wherein in at least one frame member of the pair of frame members, a gouged portion is provided that faces one of the load sensors.

12. The passenger s weight measurement device as claimed in claim 11, wherein the gouged portion is provided outside one of the load sensors.

15. The passenger'"'"'s weight measurement device as claimed in claim 9, wherein a hole portion is formed at each of the both end portions of the second connecting member.