Passenger's Weight Measurement Device for Vehicle Seat

• US 20080084086A1
• Filed: 07/29/2005
• Published: 04/10/2008
• Est. Priority Date: 07/30/2004
• Status: Active Grant

• Current Assignee: TS Tech Company Limited
• Original Assignee: TS Tech Company Limited
• Inventors: Sato, Kenji, Endo, Shigeru
• Granted Patent: US 7,878,570 B2
• Time in Patent Office: Days
• US Class Current: 296/68.1
• 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 2/0025 by using weight measurement
• CPC Class Codes: B60N 2/0031 mounted on the frame
• 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 2210/16 Electromagnetic waves
• CPC Class Codes: B60N 2230/30 Signal processing of sensor data
• 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 21/01516 using force or pressure sensing means
• CPC Class Codes: B60R 21/0152 using strain gauges
• 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

Abstract

To provide a passenger'"'"'s weight measurement device for a vehicle seat which can be assembled to prevent the occurrence of the initial deformation and the initial load.

The passenger'"'"'s weight measurement device 1 comprises a pair of left and right fixed lower rails 3 fixed on the floor of a vehicle, a pair of movable upper rails 4 disposed to be movable in a front-and-rear direction on each of the fixed lower rails 3, load sensors 50 and 60 fixed on an upper surface of the left movable upper rail 4, load sensors 70 and 80 mounted on the movable upper rail 4 to be movable in a left-and-right direction with respect to the right movable upper rail 4, and a rectangular frame 110 mounted on the load sensors 50, 60, 70, and 80. The mounting holes 121, 122, 123, and 124 are formed on the rectangular frame 110, and the rods 53, 63, 73, and 83 are inserted into the mounting holes from bottom up. Further, the rods 53, 63, 73, and 83 are engaged with the nuts.

Claims

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

a pair of left and right movable rails which are disposed to be movable in a front-and-rear direction on each of a pair of left and right fixed rails fixed on a vehicle side,

a plurality of load sensors which are mounted on the pair of movable rails and which comprises rods extending above,

a rectangular frame which is disposed on an upper side of the pair of movable rails and in which a plurality of mounting holes corresponding to the plurality of load sensors are formed to penetrate in an up and down direction, wherein

the rectangular frame in which the rods of the plurality of load sensors are inserted into the plurality of mounting holes from bottom up, is mounted on the plurality of load sensors.

2. The passenger'"'"'s weight measurement device for the vehicle seat as claimed in claim 1, wherein nuts are engaged with the plurality of rods and the rods are fixed to the rectangular frame by tightening of the nuts.

3. The passenger'"'"'s weight measurement device for the vehicle seat as claimed in claim 1, wherein

one load sensor of the plurality of load sensors is mounted on one movable rail of the pair of movable rails in a state that the one load sensor is fixed to the one movable rail, and

another load sensor of the plurality of load sensors is mounted on the other movable rail of the pair of movable rails so as to move in a left-and-right direction with respect to the other movable rail.

4. The passenger'"'"'s weight measurement device for the vehicle seat as claimed in claim 1, further comprises a bridging member which is provided between the pair of fixed rails.