JPH0213428U

JPH0213428U -

Info

Publication number: JPH0213428U
Application number: JP9176188U
Authority: JP
Priority date: 1988-07-11
Filing date: 1988-07-11
Publication date: 1990-01-26

Description

[Brief explanation of the drawing]

第１図乃至第８図は本考案に係る一実施例を示
し、第１図は要部拡大図、第２図は第１図の−
線矢視断面図、第３図はシートの概略側面図、
第４図Ａ，Ｂ乃至第７図Ａ，Ｂは作用説明図、第
８図はシートバツクの移動状態を示すシートの側
面図である。１０……シート、１２……シートクツシヨン、
１４……シートバツク、１６……上部シートバツ
ク、１８……下部シートバツク、２０……アーム
、２４……枢支軸、２８……スプロケツト、３０
……アーム、３６……リクライニング軸、３８…
…スプロケツト。 1 to 8 show one embodiment of the present invention, FIG. 1 is an enlarged view of the main part, and FIG. 2 is a -
A sectional view taken along the line, FIG. 3 is a schematic side view of the seat,
4A, B to 7A, B are action explanatory views, and FIG. 8 is a side view of the seat showing the moving state of the seat bag. 10... Sheet, 12... Seat cushion,
14... Seat back, 16... Upper seat back, 18... Lower seat back, 20... Arm, 24... Pivot shaft, 28... Sprocket, 30
...Arm, 36...Reclining axis, 38...
...Sprocket.

Claims

[Scope of utility model registration request]

The seat bag is divided into an upper seat bag and a lower seat bag, the upper seat bag is provided with a first arm part, the lower seat bag is provided with a second arm part, and the seat bag is rotatable in the front-rear direction with respect to the seat cushion; a first pivot shaft that is inserted into one end of the arm portion and the second arm portion and rotatably supports the first arm portion; The first part is integrally connected to the arm part.
a second sprocket that is inserted into the other end of the second arm and rotatably supports the second arm.
a second sprocket that is pivotally supported on a pivot shaft; a chain that connects the first sprocket and the second sprocket;
an engaging member that connects the arm portion and the second sprocket; and a release member that acts on the engaging member and releases the connection between the second arm portion and the second sprocket when the lower seat bag is tilted forward at a predetermined angle. When the lower seat back is tilted forward by a predetermined angle or more, the second sprocket is prevented from rotating relative to the seat cushion, and as the lower seat back is further tilted forward, the second sprocket is moved relative to the second arm portion. A seat characterized by comprising: a rotation blocking member.