# US 9,751,434 B2 · Vehicle seat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,434 B2 - Document ID: US9751434B2 - Status: Granted - Kind: B2 - Application number: 14/735,221 - Filed: 2015-06-10 - Published: 2015-10-01 - Granted: 2017-09-05 - Earliest claimed: 2012-03-14 - Assignees: Ts Tech Co., Ltd. - Applicants: Ts Tech Co., Ltd. - Inventors: Shinji Sugiyama; Kazunori Ishihara; Shuichi Shimizu - Web page: https://patentgrep.com/patent/US9751434B2 ## CPC - B60N 2/42745: {of the back-rest (B60N2/433 takes precedence; higher part of the back-rest moving together with the headrest B60N2/888)} - B60N 2/02: the seat or part thereof being movable, e.g. adjustable (adjustable arm-rests B60N2/75; adjustable head-rests B60N2/806) - B60N 2/4228: {due to impact coming from the rear} - B60N 2/68: Seat frames - B60N 2/72: Attachment or adjustment thereof - B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR ## Abstract A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot. ## Claims ### Claim 1 A vehicle seat, comprising: a seat cushion; a seat back which includes left and right side frames; a pressure-receiving member disposed rearwardly of an occupant between the left and right side frames; and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward, wherein the pressure-receiving member includes a pressure-receiving portion configured to support a back of the occupant, and a pair of support portions provided at left and right end portions of the pressure-receiving member and extending in a leftward-and-frontward direction and in a rightward-and-frontward direction, respectively, to support upper body side regions of the occupant, wherein the rocking mechanism includes: a pressing member configured to press the left or right end portion of the pressure-receiving member in a front-rear direction; and an actuator configured to actuate the pressing member, wherein the actuator is disposed rearwardly of a corresponding support portion, to overlap the support portion as viewed in the front-rear direction, and the actuator has an axis, the actuator being configured to cause the pressing member to pivot about the axis. ### Claim 2 (depends on 1) The vehicle seat according to claim 1, wherein the actuator is disposed at a laterally inner side of a corresponding side frame. ### Claim 3 (depends on 1) The vehicle seat according to claim 1, wherein the actuator has an elongated shape of which a longitudinal direction is arranged along a corresponding side frame. ### Claim 4 (depends on 1) The vehicle seat according to claim 1, wherein each support portion is disposed laterally opposite to a corresponding side frame, and wherein the actuator is disposed between the support portion and the corresponding side frame in a lateral direction. ### Claim 5 (depends on 1) The vehicle seat according to claim 1, wherein a front end portion of each support portion extends along an outer surface of the actuator in a laterally outside direction. ### Claim 6 (depends on 1) The vehicle seat according to claim 1, wherein each support portion includes a projection protruding rearward, and wherein the actuator is separate from the projection. ### Claim 7 (depends on 6) The vehicle seat according to claim 6, wherein the pressure-receiving member further includes a connecting wire configured to support the pressure-receiving portion and the support portions from rear sides thereof, an end portion of the connecting wire being connected with the pressing member, wherein the pressure-receiving portion and the support portions include engageable claws configured to engage with the connecting wire whereby the pressure-receiving member is supported by the connecting wire, and wherein an engageable claw provided in each support portion is formed integrally with the projection in a single-piece construction. ### Claim 8 (depends on 7) The vehicle seat according to claim 7, wherein the engageable claw provided in each support portion includes a base portion extending rearward from the projection, and a claw portion extending from a rear end of the base portion downward beyond a lower edge of the projection. ### Claim 9 (depends on 6) The vehicle seat according to claim 6, wherein the projection includes a first portion and a second portion that are arranged separate from each other, and wherein the pressing member is disposed between the first portion and the second portion. ### Claim 10 (depends on 9) The vehicle seat according to claim 9, wherein the pressing member is configured to contact a portion of a corresponding support portion between the first portion and the second portion of the projection at least when the pressure-receiving member is in a frontmost position. ### Claim 11 (depends on 6) The vehicle seat according to claim 6, wherein the pressing member is configured to contact the projection. ### Claim 12 (depends on 6) The vehicle seat according to claim 6, wherein the pressure-receiving portion and the support portions are formed integrally in a single-piece construction, and wherein the pressure-receiving portion includes a second projection protruding rearward, the second projection being continuous with the projection provided in each support portion. ### Claim 13 (depends on 1) The vehicle seat according to claim 1, wherein the pressure-receiving member further includes a connecting wire configured to support the pressure-receiving portion from a rear side thereof, an end portion of the connecting wire being connected with the pressing member, wherein the pressure-receiving portion includes an engageable claw configured to engage with the connecting wire whereby the pressure-receiving member is supported by the connecting wire, and wherein the engageable claw is provided at a laterally outer end portion of the pressure-receiving portion. ### Claim 14 (depends on 1) The vehicle seat according to claim 1, wherein the actuator includes a motor. ### Claim 15 (depends on 14) The vehicle seat according to claim 14, wherein the rocking mechanism further includes a biasing member configured to bias the pressing member toward an initial position thereof. ### Claim 16 (depends on 1) The vehicle seat according to claim 1, wherein the pressing member is arranged to contact a corresponding support portion. ### Claim 17 (depends on 16) The vehicle seat according to claim 16, wherein the pressure-receiving member further includes a connecting wire configured to support the pressure-receiving portion from a rear side thereof, an end portion of the connecting wire being connected with the pressing member. ### Claim 18 (depends on 16) The vehicle seat according to claim 16, wherein the pressing member is configured to contact the support portion at least when the pressure-receiving member is in a frontmost position. ### Claim 19 A vehicle seat comprising: a seat cushion; a seat back which includes left and right side frames; a pressure-receiving member disposed between the left and right side frames, the pressure-receiving member being configured to support an upper body of an occupant; and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward, wherein the rocking mechanism includes: a pressing member configured to press a left or right end portion of the pressure-receiving member in a front-rear direction; and an actuator configured to actuate the pressing member, and wherein the actuator is disposed to overlap the left or right end portion of the pressure-receiving member as viewed in the front-rear direction, and the actuator has an axis, the actuator being configured to cause the pressing member to pivot about the axis. ### Claim 20 A vehicle seat, comprising: a seat cushion; a seat back which includes left and right side frames; a pressure-receiving member disposed rearwardly of an occupant between the left and right side frames; and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward, wherein the pressure-receiving member includes a pressure-receiving portion configured to support a back of the occupant, and a pair of support portions provided at left and right end portions of the pressure-receiving member and extending in a leftward-and-frontward direction and in a rightward-and-frontward direction, respectively, to support upper body side regions of the occupant, wherein the rocking mechanism includes: a pressing member configured to press the left or right end portion of the pressure-receiving member in a front-rear direction; and an actuator configured to actuate the pressing member, wherein the actuator is disposed rearwardly of a corresponding support portion, to overlap the support portion as viewed in the front-rear direction, the actuator includes a motor, and the rocking mechanism further includes a biasing member configured to bias the pressing member toward an initial position thereof.