31results about How to "Reliable locking function" patented technology

The invention discloses a sliding device and a head-mounted display. The sliding device comprises a transmission support, a sliding groove base and a pushing member, wherein the sliding groove base is provided with a sliding groove; the transmission support can be inserted in the sliding groove in a sliding mode, and a locked member is arranged between the transmission support and the sliding groove; the pushing member is driven by external force to move in a reciprocating mode and is provided with a push-and-pull portion matched with the locked member; the push-and-pull portion pushes the locked member in a reciprocating mode, forward moving locking or backward moving locking of the locked member is released correspondingly, and the transmission support is driven to correspondingly move forward or backward further; when the push-and-pull portion stops pushing, the locked member returns to a locking state. The head-mounted display is provided with the sliding device. The sliding device has a self-locking function, and therefore solves the technical problem that an existing sliding device is easy to operate mistakenly. The head-mounted display has the advantages of being reliable, difficult to operate mistakenly and the like.

The invention discloses a vibration exciter fixed mounting device which mainly comprises a vibration exciter fixing platform assembly, supporting foot assemblies, a screw rod sliding assembly and a rotary table assembly. The vibration exciter fixing platform assembly is fixed at one end of the screw rod sliding assembly by a nut; the screw rod sliding assembly is arranged on the rotary table assembly; the supporting foot assemblies are connected with the rotary table assembly so as to support the vibration exciter fixing platform assembly. The vibration exciter fixed mounting device is flexible to regulate, is reliable to fix, is simple to mount, has a compact structure, has a lighter weight, is convenient to use in the external field and has better adaptability.

Floor panels (1, 1', 1' ' ) are shown, which are provided with a mechanical locking system on long and short edges (5a, 5b, 4a, 4b) allowing installation with vertical folding and where the long edge (5a, 5b) locking system prevents separation of the short edges (4a, 4b) during the folding action.

A return preventing portion flexible locking piece (20) and return preventing portion (52) for preventing a lever (40) from returning from a standby position to a mount position and a locking means flexible locking piece (20) and lock arm (47) for locking the lever (40) at a connection position are provided. The flexible locking piece (20) return preventing means, locking means of a first housing (10) one member is engaged with the lock arm (47) of the lever (40) (other member), whereby the lever (40) is locked at the connection position. The shape of the first housing (10) can be simplified since it is not necessary to provide the first housing (10) with a locking means for exclusive use in addition to the flexible locking piece (20).

The invention relates to an emergency escape window for a rail transit vehicle, and the window comprises a window frame, a casement, and an actuation mechanism which is used for locking or opening the casement. The actuation mechanism comprises a four-rod structure which is formed by the sequential connection of an action block, a first connecting rod, a handle, and a second connecting rod. The casement is locked in the window frame through a dead point of the four-rod structure, and can be unlocked through the unlocking of the dead point, thereby opening the window. The invention also provides the rail transit vehicle comprising the above window. The window is locked through the dead point of the four-rod structure, is reliable in locking function, is short in starting transmission link, and is quick in emergency usage. The window is simple in structure, is more convenient in installation and use, and is high in reliability.

The invention relates to a desk circular saw machine. The begone stopper member is pressed on the side of the safety cup to form moving resistance, therefore the safety cup maybe not rotate smoothly, wherein the stopper member is used to locking the safety up which rotates relative to cutter shield to switch the cutter at the dead point on the main body of cutting-off machine to make it not open. In the said invention, even the stopper member is bunted with the side, the safety cup will rotate smoothly. The stopper member (41) is separated into stopper supporter (42) and stopper main body (43), and a second energizing unit (43b) is mounted betweent the two parts, to make the energized force on the restrict part (43a) of the stopper main body (43) less than the first energized force of the dead point locking mechanism.

An output shaft locking device for a power tool includes a positioning ring having a circular inner periphery and an output shaft extends through the positioning ring. Two activation members are between the positioning ring and the output shaft. Each activation member has a first protrusion on a central portion of one side thereof, and a second protrusion and a third protrusion are on two ends of the other side thereof. The first protrusions of the two activation members contact the output shaft, and the second protrusions and the third protrusions face the circular inner periphery of the positioning ring. When the output shaft rotates clockwise, the activation members are pushed outward and the second protrusions contact the positioning ring which applies a reaction force to pivot the activation members so that the third protrusions contact the positioning member to lock the output shaft from rotation.

The invention discloses a manual maintenance switch and belongs to the technical field of electric passenger vehicles. The manual maintenance switch comprises a socket and a plug detachably connectedwith the socket. The plug comprises a first shell and a handle. One end of the handle is movably connected to the outer side wall of the first shell and the other end of the handle is respectively provided with a primary locking piece used for locking the handle to the first shell and a secondary locking piece used for locking the primary locking piece. The first locking piece is arranged on the inner side of the handle and is matched with a first locking groove arranged on the outer side wall of the first shell. The secondary locking piece is slidingly arranged on the handle The secondary locking piece comprises a spring bolt located on the inner side of the handle and a limiting plate connected with the spring bolt. The spring bolt is matched with a second locking groove arranged at theside of the primary locking piece. The limiting plate is in sliding connection with the primary locking piece. The manual maintenance switch is provided with a reliable locking mechanism and can be connected with the outside in three directions. The unlocking operation direction of the product is convenient to operate in a narrow space in the length direction of the product.

The invention discloses a large-load actuating cylinder control sliding lock, and aims to provide a sliding block lock which is simple in structure, capable of bearing large loads and high in lockingcapacity and actuating capacity.. The sliding block lock is realized through the following technical scheme: a sliding block assembled in the actuating cylinder is installed in a guide groove of the piston rod, the sliding block abuts against the axial locking groove slope of the inner wall of the piston cylinder and the tail end face of the outer ring face through a locking slope, the rear end ofthe sliding block abuts against the end face of the piston rod and slides in the radial direction of the guide face of the guide groove, and a sliding sleeve overcomes spring elastic force through aspring sleeve assembled on the lead screw nut. During locking, the sliding sleeve overcomes the elastic force of the spring through the spring sleeve assembled on the lead screw nut to push the sliding block to move; when the sliding block pushes the conical surface to move to the locking groove inclined surface, the sliding sleeve is pushed by the spring to enable the sliding block to slide outwards in the radial direction of the guide groove guide surface, the tail end face of the outer ring surface of the sliding sleeve moves and abuts against the inner ring surface of the sliding block, external loads cannot enable the sliding block to disengage from a space formed by the piston cylinder, the piston rod guide groove and the sliding sleeve, and locking is achieved. During unlocking, thelead screw nut drives the sliding sleeve through the lead screw to be disengaged from the inner ring face of the sliding block, and unlocking of the sliding block lock is achieved.

The invention discloses a lock mechanism. The lock mechanism comprises a cushion movable side board and a cushion fixed side board hinged to the cushion movable side board; the lock mechanism furthercomprises a limiting baffle, a lock pin and a lock pulling mechanism, wherein the limiting baffle is fixedly connected with the cushion fixed side board and provided with a lock hole; the lock pin isarranged on the cushion movable side board and clamped into the lock hole along with turning up of the cushion movable side board so that locking of the lock mechanism can be achieved when a seat is turned upwards; the head of the lock pulling mechanism is connected with the tail of the lock pin, and by pulling the lock pulling mechanism upwards, the lock pin is pulled out from the lock hole so that unlocking of the lock mechanism can be achieved; the plug pin type lock mechanism is simple in structure, small in part quantity and reliable in lock function; and manual unlocking is conducted after a passenger on the third row sits down or gets out completely, and safety and reliability are achieved.

The invention discloses a side-hung type lower side door for a railway open wagon. The lower side door comprises a door frame, a door plate, a primary locking mechanism and a secondary locking mechanism, wherein the door frame is arranged on the side wall of a carriage of the railway open wagon, the door plate is hinged to the door frame through a hinge, the hinge is arranged on one side, close to the wagon head or the wagon tail of the railway open wagon, of the door plate, and a lock seat is arranged on the door frame; and a locking hole is formed in the lock seat, the primary locking mechanism is arranged on the door plate, and a lock arm of the primary locking mechanism is matched with the locking hole in an inserted mode. The lower side door is hinged to the door plate through the door frame to form the side-hung type lower side door, and the locking function of the lower side door is quite reliable through the primary locking mechanism and the secondary locking mechanism; and comprehensively compared with an existing lower side door, the lower side door has high practicability and economical efficiency for improving the unloading speed of the open wagon, reducing the transportation cost and reducing the transportation workload and the risk coefficient.

The invention discloses a wedge-shaped locking and sealing structure of a camera handle key, which is characterized in that a wedge-shaped locking piece is arranged in a camera handle from outside toinside, and the direction of extrusion force is changed through a wedge-shaped inclined plane, so that key silica gel is extruded by a key fixing plate and the inner surface of the camera handle, andthe sealing of the position of the camera handle key is realized; and the sealing and mounting modes are effective and reliable.