# US 10,945,534 B2 · Child seat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,945,534 B2 - Document ID: US10945534B2 - Status: Granted - Kind: B2 - Application number: 16/387,257 - Filed: 2019-04-17 - Published: 2019-10-24 - Granted: 2021-03-16 - Earliest claimed: 2018-04-23 - Assignees: Wonderland Switzerland AG - Applicants: Wonderland Switzerland AG - Inventors: Zhiren Zhong - Web page: https://patentgrep.com/patent/US10945534B2 ## CPC - A47D 1/006: {dismountable} - A47D 1/02: Foldable chairs {(foldable rocking-chairs A47D13/101)} - A47D 1/10: capable of being suspended from, or attached to, tables or other articles - A47D 15/006: {in chairs} - B62B 7/142: {Means for securing the body to the frame} - B62B 9/102: {characterized by details of the seat} - B62B 9/104: {with adjustable or reclining backrests} - B62B 9/12: involving parts that are adjustable, attachable or detachable {(B62B9/102, B62B9/14 take precedence)} - B62B 9/24: Safety guards for children, e.g. harness (cat nets B62B9/14; devices for use in guiding or supporting children, e.g. safety harness A47D13/08) - B62B 2202/42: Persons or animals, dead or alive - B62B 2205/20: Catches; Locking or releasing an articulation - B62B 2205/30: Detachable, retractable or collapsible load supporting means - A47D: FURNITURE SPECIALLY ADAPTED FOR CHILDREN (school benches or desks A47B39/00, A47B41/00) - B62B: HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES (characterised by animal propulsion B62C; propulsion of sledges by driver or engine B62M) ## Abstract A child seat includes a seat portion fixedly connected with a first coupling part, a connector that is pivotally connected with the first coupling part of the seat portion and is operable to detachably engage with a corresponding structure provided on a child supporting apparatus, a locking mechanism operable to lock and unlock the connector with respect to the seat portion, and a backrest frame fixedly connected with a second coupling part and operatively connected with the locking mechanism, the second coupling part being pivotally connected with the first coupling part, wherein the backrest frame is rotatable in a folding direction to cause the locking mechanism to unlock the connector with respect to the seat portion and in an unfolding direction to cause the locking mechanism to lock the connector with respect to the seat portion. ## Claims ### Claim 1 A child seat comprising: a seat portion fixedly connected with a first coupling part; a connector pivotally connected with the first coupling part of the seat portion, the connector being operable to detachably engage with a corresponding structure provided on a child supporting apparatus; a locking mechanism operable to lock and unlock the connector with respect to the seat portion, the locking mechanism locking the connector with respect to the seat portion in a locking state and unlocking the connector with respect to the seat portion in an unlocking state; and a backrest frame fixedly connected with a second coupling part and operatively connected with the locking mechanism, the second coupling part being pivotally connected with the first coupling part, wherein the locking mechanism is switchable between the locking state and the unlocking state by a rotation of the backrest frame relative to the seat portion and the connector, the backrest frame being rotatable in a folding direction to cause the locking mechanism to unlock the connector with respect to the seat portion and in an unfolding direction to cause the locking mechanism to lock the connector with respect to the seat portion. ### Claim 2 (depends on 1) The child seat according to claim 1, wherein the second coupling part is pivotally connected with the first coupling part at an inner side of the first coupling part, and the connector is pivotally connected with the first coupling part at an outer side of the first coupling part. ### Claim 3 (depends on 1) The child seat according to claim 1, wherein the locking mechanism includes a latching device slidably connected with the first coupling part, the latching device being movable to engage with and disengage from a housing of the connector, the connector being locked in position with respect to the seat portion when the latching device engages with the housing and unlocked with respect to the seat portion when the latching device disengages from the housing. ### Claim 4 (depends on 3) The child seat according to claim 3, wherein the latching device includes a stem portion and a locking portion connected with each other, the stem portion being slidable along a guide slot provided in the first coupling part, and the locking portion protruding at a side of the stem portion, the connector being locked in position with respect to the seat portion when the locking portion is engaged with the housing and unlocked with respect to the seat portion when the locking portion is disengaged from the housing. ### Claim 5 (depends on 4) The child seat according to claim 4, wherein the locking mechanism further includes a spring connected with the stem portion, and an actuating part fixedly connected with the second coupling part, the spring biasing the latching device toward an unlocking position, and the actuating part being movable along with the backrest frame between a hold state corresponding to an unfolded state of the backrest frame and a release state corresponding to a folding of the backrest frame, the actuating part contacting with the stem portion in the hold state to hold the latching device in a locking position against a biasing force of the spring, and the actuating part being displaced away from the stem portion in the release state for movement of the latching device to the unlocking position under the biasing force of the spring. ### Claim 6 (depends on 4) The child seat according to claim 4, wherein the backrest frame and the connector are respectively connected pivotally with the seat portion about a first and a second pivot axis, and the stem portion is slidable along an axis substantially orthogonal to the first and second pivot axes. ### Claim 7 (depends on 4) The child seat according to claim 4, wherein the stem portion and the locking portion are fixedly connected with each other. ### Claim 8 A child seat comprising: a seat portion fixedly connected with a first coupling part; a connector pivotally connected with the first coupling part of the seat portion, the connector being operable to detachably engage with a corresponding structure provided on a child supporting apparatus; a locking mechanism operable to lock and unlock the connector with respect to the seat portion; and a backrest frame fixedly connected with a second coupling part and operatively connected with the locking mechanism, the second coupling part being pivotally connected with the first coupling part, wherein the backrest frame is rotatable in a folding direction to cause the locking mechanism to unlock the connector with respect to the seat portion and in an unfolding direction to cause the locking mechanism to lock the connector with respect to the seat portion; wherein the locking mechanism includes a latching device movably connected with the first coupling part, and an actuating part fixedly connected with the second coupling part, the latching device being movable to engage with and disengage from a housing of the connector, and the actuating part being movable along with the backrest frame between a hold state corresponding to an unfolded state of the backrest frame and a release state corresponding to a folding of the backrest frame, the actuating part contacting with the latching device in the hold state to keep the latching device in a locking position engaged with the housing of the connector, and the actuating part being displaced away from the latching device in the release state for movement of the latching device to an unlocking position disengaged from the housing of the connector. ### Claim 9 (depends on 8) The child seat according to claim 8, wherein the second coupling part is pivotally connected with the first coupling part at an inner side of the first coupling part, and the connector is pivotally connected with the first coupling part at an outer side of the first coupling part. ### Claim 10 (depends on 8) The child seat according to claim 8, wherein the latching device includes a stem portion and a locking portion connected with each other, the stem portion being slidable along a guide slot provided in the first coupling part, and the locking portion protruding at a side of the stem portion, the connector being locked in position with respect to the seat portion when the locking portion is engaged with the housing and unlocked with respect to the seat portion when the locking portion is disengaged from the housing. ### Claim 11 (depends on 10) The child seat according to claim 10, wherein the locking mechanism further includes a spring connected with the stem portion, the spring biasing the latching device toward the unlocking position, the actuating part contacting with the stem portion in the hold state to hold the latching device in the locking position against a biasing force of the spring, and the actuating part being displaced away from the stem portion in the release state for movement of the latching device to the unlocking position under the biasing force of the spring. ### Claim 12 (depends on 10) The child seat according to claim 10, wherein the backrest frame and the connector are respectively connected pivotally with the seat portion about a first and a second pivot axis, and the stem portion is slidable along an axis substantially orthogonal to the first and second pivot axes. ### Claim 13 (depends on 10) The child seat according to claim 10, wherein the stem portion and the locking portion are fixedly connected with each other.