The present disclosure relates to a mechanical extension apparatus for an extendable chair unit and a chair unit including such mechanical extension apparatus. The mechanical extension apparatus includes: a reclining apparatus that include multiple links attached to the seat, the backrest and the footrest of the extendable seat, and such reclining apparatus is configured to convert the extendable seat between a sitting position, a TV position, and a lying position. The mechanical extension apparatus also includes an actuator that is attached to the reclining apparatus, and the actuator is configured to electronically convert the extendable seat between the sitting position and the TV position; and the reclining apparatus is configured to convert the extendable seat between the TV position and the lying position by non-electric actuation.

A multifunctional swivel chair tray includes a main body. The main body is connected with a warping plate through a second rotating shaft. An ascending and descending block penetrates through the second rotating shaft. The ascending and descending block is connected with an ascending and descending driving mechanism. A first adjusting rod penetrates through one side of the main body. The first adjusting rod is connected with a multi-spring grouping adjusting mechanism. A second adjusting rod is arranged on another side of the main body. The second adjusting rod is connected with a gear adjusting mechanism. The warping plate is connected with a base plate through a third rotating shaft. A slide plate is slidably connected onto the base plate. A slide plate locking mechanism is arranged between the base plate and the slide plate.

A multifunctional swivel chair tray includes a main body. The main body is connected with a warping plate through a second rotating shaft. An ascending and descending block penetrates through the second rotating shaft. The ascending and descending block is connected with an ascending and descending driving mechanism. A first adjusting rod penetrates through one side of the main body. The first adjusting rod is connected with a multi-spring grouping adjusting mechanism. A second adjusting rod is arranged on another side of the main body. The second adjusting rod is connected with a gear adjusting mechanism. The warping plate is connected with a base plate through a third rotating shaft. A slide plate is slidably connected onto the base plate. A slide plate locking mechanism is arranged between the base plate and the slide plate.

The present disclosure provides a multifunctional collapsible stool including a collapsible stool body. An upper end and a lower end of the collapsible stool body include an upper seat and a lower seat respectively, the collapsible stool body includes a cavity, and an upper cover capable of opening and closing the cavity is mounted on the upper seat. A rear end of the upper seat is rotatably connected to a backup ring located between the upper seat and the upper cover. A rear end of the upper cover is rotatably connected to the rear end of the upper seat. The multifunctional collapsible stool designed this way can be utilized as a closestool or a garbage bin with the upper cover opened in addition to being utilized as a stool. Further, the multifunctional collapsible stool may also be utilized for storage. With these functions, the use requirements of more consumers can be satisfied.

A control mechanism for a chair comprises a baseplate configured to be coupled to a chair base assembly, a support plate configured to be coupled to a chair seat, and an elastic element arranged between the base plate and the support plate. The elastic element enables the support plate to be tilted with respect to the base plate around a first tilt axis and a second tilt axis different from the first tilt axis. The control mechanism further comprises a control handle configured to be actuated in an actuating direction, and at least one stop element. Each stop element is arranged between the base plate and the support plate and configured to limit a minimum distance between the base plate and the support plate at the position of the corresponding stop element. A stop element adjust mechanism is coupled to the control handle and configured to adjust the minimum distance of each stop element in response to actuating the control handle in the actuating direction.

A control mechanism for a chair comprises a baseplate configured to be coupled to a chair base assembly, a support plate configured to be coupled to a chair seat, and an elastic element arranged between the base plate and the support plate. The elastic element enables the support plate to be tilted with respect to the base plate around a first tilt axis and a second tilt axis different from the first tilt axis. The control mechanism further comprises a control handle configured to be actuated in an actuating direction, and at least one stop element. Each stop element is arranged between the base plate and the support plate and configured to limit a minimum distance between the base plate and the support plate at the position of the corresponding stop element. A stop element adjust mechanism is coupled to the control handle and configured to adjust the minimum distance of each stop element in response to actuating the control handle in the actuating direction.

A locking device for furniture, in particular for furniture which may be adjusted by rotation of a furniture section is provided. The locking device includes an axle which is rotatable for adjusting the furniture and which has an engagement recess limited to an angular segment about the axle. The locking device further includes a blocking element which is configured for rotational blocking of the axle by engaging in the engagement recess. The locking device further includes a support bearing which is configured to support the blocking element in a fixed rotational manner about the axle. The locking device further includes an adjusting ring rotating about the axle, which has a contoured recess for radial adjustment of the blocking element within the support bearing upon rotation of the adjusting ring about the axle. The blocking element is engageable in the engagement recess by the radial adjustment, so that the axle is lockable rotationally with the support bearing via the blocking element.

A locking device for furniture, in particular for furniture which may be adjusted by rotation of a furniture section is provided. The locking device includes an axle which is rotatable for adjusting the furniture and which has an engagement recess limited to an angular segment about the axle. The locking device further includes a blocking element which is configured for rotational blocking of the axle by engaging in the engagement recess. The locking device further includes a support bearing which is configured to support the blocking element in a fixed rotational manner about the axle. The locking device further includes an adjusting ring rotating about the axle, which has a contoured recess for radial adjustment of the blocking element within the support bearing upon rotation of the adjusting ring about the axle. The blocking element is engageable in the engagement recess by the radial adjustment, so that the axle is lockable rotationally with the support bearing via the blocking element.

A chair comprises a seat pan member, a seat back member having a lumbar support member, a lumbar support assembly operatively connected to the lumbar support member and configured for moving the lumbar support member, with respect to the seat pan member and the seat back member, between at least a first position and a second position, and an actuator configured to operate the lumbar support assembly for movement of the lumbar support member between at least the first position and the second position. When the lumbar support member is in the second position, the lumbar support member is positioned forwardly, in a direction toward the seated user's lower back, relative to the seat back member so as to enable the user to be seated forwardly on the seat pan member while being engaged with the lumbar support member.

A chair comprises a seat pan member, a seat back member having a lumbar support member, a lumbar support assembly operatively connected to the lumbar support member and configured for moving the lumbar support member, with respect to the seat pan member and the seat back member, between at least a first position and a second position, and an actuator configured to operate the lumbar support assembly for movement of the lumbar support member between at least the first position and the second position. When the lumbar support member is in the second position, the lumbar support member is positioned forwardly, in a direction toward the seated user's lower back, relative to the seat back member so as to enable the user to be seated forwardly on the seat pan member while being engaged with the lumbar support member.