Abstract: Provided is a spring lock mechanism including: a lock drum (11) provided on either one of a first member (20) and a second member (20); a coil spring (12) secured to the other member, abutting on the lock drum (11), and locking turning of the second member (30) in one direction relative to the first member (20) due to a frictional force; and a switching mechanism causing the second member (30) to turn relative to the first member (20) to switch a state in which the locking has been established and a state in which the locking has been released and held, in which the coil spring (12) abuts on an inner circumferential surface of the lock drum (11), the diameter of the coil spring (12) increases through compression of a spring wire material of the coil spring (12) in a longitudinal direction caused by the turning of the second member (20), the coil spring thus further presses the inner circumferential surface of the lock drum (11) and locks the turning due to the frictional force, and the switching mechanism acc

Abstract: Provided is a spring lock mechanism including: a lock drum (11) provided on either one of a first member (20) and a second member (20); a coil spring (12) secured to the other member, abutting on the lock drum (11), and locking turning of the second member (30) in one direction relative to the first member (20) due to a frictional force; and a switching mechanism causing the second member (30) to turn relative to the first member (20) to switch a state in which the locking has been established and a state in which the locking has been released and held, in which the coil spring (12) abuts on an inner circumferential surface of the lock drum (11), the diameter of the coil spring (12) increases through compression of a spring wire material of the coil spring (12) in a longitudinal direction caused by the turning of the second member (20), the coil spring thus further presses the inner circumferential surface of the lock drum (11) and locks the turning due to the frictional force, and the switching mechanism acc

Abstract: A head rest that can secure backward view when it is not used, and enable adjustment of its front-and-rear position in use. The head rest is rotatable from a rearmost position to a stored position in which the head rest is tilted down forward. When the head rest is in a use range from the rearmost position to a forward adjustment limit position located in front, the tilting angle of the head rest is adjustable, and the head rest can be rotated forward to the stored position and rotated backward to the rearmost position. By contrast, when the head rest is in the stored position, forward rotation and backward rotation of the head rest are regulated, and the head rest can be rotated backward to the rearmost position.

Abstract: A headrest with a lock urging member in which unintentional change in an urging direction will hardly occur is provided. The headrest includes a first member, a second member, a backward urging member, a lock plate, a lock urging member, a lock switching member, and a resistance member. The lock switching member is provided with a switching pin abutment portion A, a switching pin abutment portion B, and a switching cam abutment portion. The lock plate includes a switching cam abutted portion. In a lock adjustment range, the lock switching member is moved together with the second member by the resistance member configured to apply resistance to movement of the lock switching member with respect to the second member. In addition, in rotation further forward beyond a forward adjustment limit position, the switching abutment portion B abuts against the switching pin fixed to the first member, so that the lock switching member does not follow the second member, whereby the headrest is unlocked.

Abstract: A headrest (1) includes a stay (6), a framework (2) supported by the stay (6) in a turnable manner toward a head of a sitting person, and supporting the head thereof, a shaft member (4) to be actuated in conjunction with the turning of the framework (2), and turning at a larger angle than a turning angle of the framework (2), and a coil spring (5) including a coil (50) wound around a pivot portion (47) of the shaft member (4) in a direction tightening the shaft member (4) when the framework (2) turns to the opposite side to the head side of the sitting person, and supports the head of the sitting person.

Abstract: A head rest is provided that can secure backward view when it is not used, and enable adjustment of its front-and-rear position in use. A head rest is rotatable from a rearmost position to a stored position in which the head rest is tilted down forward. When the head rest is in a use range from the rearmost position to a forward adjustment limit position located in front, the tilting angle of the head rest is adjustable with in-use tilting-angle adjustment means, and the head rest can be rotated forward to the stored position and rotated backward to the rearmost position with unlock means. By contrast, when the head rest is in the stored position, forward rotation and backward rotation of the head rest are regulated with storage backward rotation regulating means, and the head rest can be rotated backward to the rearmost position with unlock means.

Abstract: An armrest comprises an arm body in which a through hole is formed, an arm connected to the arm body, a drum that includes a cylinder inserted in the through hole, a bottom, and planar walls extending outside from a part of an end of the cylinder, is arranged rearward the arm body, and pivots the arm body about the cylinder; and mounting metal fittings that are integrally connected to the drum while locking the bottom and can be mounted on the seat frame. The armrest can adjust a position of the arm at a storage state and at a use state. The planar walls are arranged in such a manner as to position in a front-and-rear direction of the arm body in the use state, and the arm body is sandwiched between the planar walls and the mounting metal fittings in an axial direction of the cylinder.

Abstract: A headrest (1) includes a stay (6), a framework (2) supported by the stay (6) in a turnable manner toward a head of a sitting person, and supporting the head thereof, a shaft member (4) to be actuated in conjunction with the turning of the framework (2), and turning at a larger angle than a turning angle of the framework (2), and a coil spring (5) including a coil (50) wound around a pivot portion (47) of the shaft member (4) in a direction tightening the shaft member (4) when the framework (2) turns to the opposite side to the head side of the sitting person, and supports the head of the sitting person.

Abstract: A headrest with a lock urging member in which unintentional change in an urging direction will hardly occur is provided. The headrest includes a first member, a second member, a backward urging member, a lock plate, a lock urging member, a lock switching member, and a resistance member. The lock switching member is provided with a switching pin abutment portion A, a switching pin abutment portion B, and a switching cam abutment portion. The lock plate includes a switching cam abutted portion. In a lock adjustment range, the lock switching member is moved together with the second member by the resistance member configured to apply resistance to movement of the lock switching member with respect to the second member. In addition, in rotation further forward beyond a forward adjustment limit position, the switching abutment portion B abuts against the switching pin fixed to the first member, so that the lock switching member does not follow the second member, whereby the headrest is unlocked.

Abstract: An armrest comprises an arm body in which a through hole is formed, an arm connected to the arm body, a drum that includes a cylinder inserted in the through hole, a bottom, and planar walls extending outside from a part of an end of the cylinder, is arranged rearward the arm body, and pivots the arm body about the cylinder; and mounting metal fittings that are integrally connected to the drum while locking the bottom and can be mounted on the seat frame. The armrest can adjust a position of the arm at a storage state and at a use state. The planar walls are arranged in such a manner as to position in a front-and-rear direction of the arm body in the use state, and the arm body is sandwiched between the planar walls and the mounting metal fittings in an axial direction of the cylinder.

Abstract: The rotary damper includes a brake drum (10) whose either end is integrally connected to the first member (100); a cylindrical case (20) covering the brake drum (10) in a state that the cylindrical case relatively rotates with respect to the brake drum, and being connected to the second member (200) in a state that the cylindrical case rotates in conjugation with the second member; a brake spring (30) being externally fitted to the brake drum (10) with the coil spring tightened, and being configured by a coil spring whose one end is fixed to one end of the cylindrical case (20) and other end is fixed to other end of the cylindrical case. The brake drum (10) is provided with a releasing concave portion (10c) on an outer periphery thereof and fixing portions for winding the brake spring rotating independently from the brake drum.

Abstract: The rotary damper includes a brake drum (10) whose either end is integrally connected to the first member (100); a cylindrical case (20) covering the brake drum (10) in a state that the cylindrical case relatively rotates with respect to the brake drum, and being connected to the second member (200) in a state that the cylindrical case rotates in conjugation with the second member; a brake spring (30) being externally fitted to the brake drum (10) with the coil spring tightened, and being configured by a coil spring whose one end is fixed to one end of the cylindrical case (20) and other end is fixed to other end of the cylindrical case. The brake drum (10) is provided with a releasing concave portion (10c) on an outer periphery thereof and fixing portions for winding the brake spring rotating independently from the brake drum.

Abstract: A headrest for vehicles including a stationary plate secured to the seat back of a vehicle; an attachment shaft supported by the stationary plate; a coil spring wound on the attachment shaft and having a fixed end and a free end with its inner diameter being smaller than the outer diameter of the attachment shaft; and a headrest base plate attached to the stationary plate so as to turn forward and rearward. The fixed end of the coil spring is fixed to the base plate so as to secure the attachment shaft to the base plate or the fixed end of the coil is fixed to the stationary plate so as to secure the attachment shaft to the base plate, and the winding direction of the coil spring is set in a direction that tightens the spring when the base plate is turned rearward, thus restricting this rearward turning.

Abstract: An armrest apparatus including an arm, which is fitted to a drum provided on a seat side member, and a coil spring, which is provided on the drum, wherein one end of the spring is fixed to the arm-rest member and another end of the spring, a free end, is curved outwardly in the direction away from the center axis of the drum, and this coil spring is loosely wound around the drum so as to tighten when the arm-rest member is rotated downward, and further a coil end receiving surface that receives the curved part of the coil spring is provided in the drum. When the arm-rest member is rotated downward and reaches a predetermined set angle, the coil end receiving surface receives the curved part of the coil spring, so that the coil spring tightens the drum by a downward load applied to the arm, restricting the downward rotation of the arm.

Abstract: A headrest including a base material having a front base member and a rear base member, a turn restricting bracket installed the front and rear base members and having an abutting portion and a protruding step, a center shaft attached to the turn restricting bracket, and a latching panel installed between the front and rear base members with one end thereof hinged to the rear base member, the latching panel being pulled by a spring. The headrest has forward and rearward use limitation positions: at forward use limitation position, when the headrest turns forward and a latching surface formed in the latching panel catches on the protruding step, a further forward turning of the headrest is restricted; and at the rearward use limitation position, when the headrest turns rearward and the abutting portion strikes the front base member, further rearward turning of the headrest is restricted.

Abstract: A position adjustable armrest for a seat, including a drum fixed to the seat or the armrest, a casing fixed to the armrest or the seat and rotatable relative to the drum, a coil spring with one end thereof fixed to the casing and wound around the drum and the other end being in a free state, a cam that acts on the free end of the coil spring and displaces the free end in an axial direction and peripheral direction of the coil spring according to the relative angular displacement between the drum and the casing, and a spring guide that acts on the free end of the coil spring and allows the displacement in the peripheral direction of the coil spring to be maintained and returned according to the relative angular displacement.

Abstract: A headrest including a base material having a front base member and a rear base member, a turn restricting bracket installed the front and rear base members and having an abutting portion and a protruding step, a center shaft attached to the turn restricting bracket, and a latching panel installed between the front and rear base members with one end thereof hinged to the rear base member, the latching panel being pulled by a spring. The headrest has forward and rearward use limitation positions: at forward use limitation position, when the headrest turns forward and a latching surface formed in the latching panel catches on the protruding step, a further forward turning of the headrest is restricted; and at the rearward use limitation position, when the headrest turns rearward and the abutting portion strikes the front base member, further rearward turning of the headrest is restricted.

Abstract: A headrest for vehicles including a stationary plate secured to the seat back of a vehicle; an attachment shaft supported by the stationary plate; a coil spring wound on the attachment shaft and having a fixed end and a free end with its inner diameter being smaller than the outer diameter of the attachment shaft; and a headrest base plate attached to the stationary plate so as to turn forward and rearward. The fixed end of the coil spring is fixed to the base plate so as to secure the attachment shaft to the base plate or the fixed end of the coil is fixed to the stationary plate so as to secure the attachment shaft to the base plate, and the winding direction of the coil spring is set in a direction that tightens the spring when the base plate is turned rearward, thus restricting this rearward turning.

Abstract: A position adjustable armrest for a seat, including a drum fixed to the seat or the armrest, a casing fixed to the armrest or the seat and rotatable relative to the drum, a coil spring with one end thereof fixed to the casing and wound around the drum and the other end being in a free state, a cam that acts on the free end of the coil spring and displaces the free end in an axial direction and peripheral direction of the coil spring according to the relative angular displacement between the drum and the casing, and a spring guide that acts on the free end of the coil spring and allows the displacement in the peripheral direction of the coil spring to be maintained and returned according to the relative angular displacement.

Abstract: An access floor system comprising (1) block panels made up of one or more panel units, (2) a groove structure defined by adjacent block panels, the groove structure capable of containing wiring, (3) lid panels for covering the groove structure, and (4) central locking plates to cover the spaces remaining at the juncture of lid panels and to lock the assembly together.