Abstract: Provided is a two-way clutch capable of making a size in an axial direction thereof compact. A first engaging element and a second engaging element are arranged in a first wedge-shaped space and a second wedge-shaped space between an outer member and an inner member. The first engaging element is held by the first retainer and the first retainer is enabled to swing to the outer member. The second engaging element is held by the second retainer and the second retainer is enabled to swing to the outer member. In a side view orthogonal to an axial direction of the first engaging element and the second engaging element, at least a part of the first engaging element and at least a part of the second engaging element overlap in the axial direction.

Abstract: Provided is a two-way clutch capable of making a size in an axial direction thereof compact. A first engaging element (5) and a second engaging element (6) are arranged in a first wedge-shaped space (S1) and a second wedge-shaped space (S2) between an outer member (2) and an inner member (3). The first engaging element (5) is held by the first retainer (7) and the first retainer (7) is enabled to swing to the outer member (2). The second engaging element (6) is held by the second retainer (8) and the second retainer (8) is enabled to swing to the outer member (2). In a side view orthogonal to an axial direction of the first engaging element (5) and the second engaging element (6), at least a part of the first engaging element (5) and at least a part of the second engaging element (6) overlap in the axial direction.

Abstract: A wall body attachment unit (1) is secured by screws (2) to a wall body (W), a shelf board support unit (4) is removably attached to the wall body attachment unit (1) by engaging a curved engagement portion (4a) into a corresponding engaged portion of the wall body attachment unit (1). The shelf board support unit (4) holds a shelf board between a shelf board holding board portion (4b) and a shelf board holding lower board portion (4e) while a distance between the upper and lower members (4A) and (4B), which are secured to each other. Thus, the shelf board (3) can be supported by the shelf board support unit (4) at a low position on the ground, but not at an attachment position on the wall body.

Abstract: A connecting cylindrical part of a second hinge member is inserted between first and second support arm parts of a first hinge member such that an axis of the second hinge member is aligned with that of a rotation axis. A hinge cylinder is passed through the connecting cylindrical part. The hinge cylinder is non-turnably fitted to opposite end parts of the connecting cylindrical part. The opposite end parts of the hinge cylinder projecting from the connecting cylindrical part are turnably fitted to the first and second support arm parts through bearings, respectively.

Abstract: A fastening device B comprises a support member secured to one body to be fastened, a base member secured to the other body to be fastened, an operating lever having a U-shaped configuration in section and a basal end of which is turnably connected to the base member through a first shaft, an arm one end part of which is turnably connected to the support member through a second shaft and the other end part of which is turnably connected to the basal end part of the operating lever through a third shaft, and a lock mechanism for locking the operating lever at an overlap position with respect to the base member. The lock mechanism includes a lock claw disposed at the base member, a lock pin laid between opposite side walls of the operating lever, and a pin biasing member received in the operating lever for biasing the lock pin toward the lock claw.

Abstract: A connecting cylindrical part of a second hinge member is inserted between first and second support arm parts of a first hinge member such that an axis of the second hinge member is aligned with that of a rotation axis. A hinge cylinder is passed through the connecting cylindrical part. The hinge cylinder is non-turnably fitted to opposite end parts of the connecting cylindrical part. The opposite end parts of the hinge cylinder projecting from the connecting cylindrical part are turnably fitted to the first and second support arm parts through bearings, respectively.

Abstract: A fastening device B comprises a support member secured to one body to be fastened, a base member secured to the other body to be fastened, an operating lever having a U-shaped configuration in section and a basal end of which is turnably connected to the base member through a first shaft, an arm one end part of which is turnably connected to the support member through a second shaft and the other end part of which is turnably connected to the basal end part of the operating lever through a third shaft, and a lock mechanism for locking the operating lever at an overlap position with respect to the base member. The lock mechanism includes a lock claw disposed at the base member, a lock pin laid between opposite side walls of the operating lever, and a pin biasing member received in the operating lever for biasing the lock pin toward the lock claw.

Abstract: A wall body attachment unit (1) is secured by screws (2) to a wall body (W), a shelf board support unit (4) is removably attached to the wall body attachment unit (1) by engaging a curved engagement portion (4a) into a corresponding engaged portion of the wall body attachment unit (1). The shelf board support unit (4) holds a shelf board between a shelf board holding board portion (4b) and a shelf board holding lower board portion (4e) while a distance between the upper and lower members (4A) and (4B), which are secured to each other. Thus, the shelf board (3) can be supported by the shelf board support unit (4) at a low position on the ground, but not at an attachment position on the wall body.