30results about How to "Strong locking force" patented technology

The invention relates to the field of optical distribution networks and discloses a quick-plug optic fiber connection component. The optic fiber connection component comprises an adapter and a connector, one end of an adapter body is provided with a locking structure, and the locking structure comprises a positioning limiting groove, a steel ball, an outer sleeve and an inner sleeve. A plug body of the connector is provided with a positioning limiting projection fitting the positioning limiting groove, the plug body is externally provided with a plug outer sleeve, a pushing device for pushingthe inner sleeve is arranged at the front end of the plug outer sleeve, the outer surface of the plug body is peripherally provided with an annular groove fitting the steel ball, and the adapter and the connector can be locked when the steel ball is pressed into the annular groove and clamped tightly by a slope of the outer sleeve of the adapter. By the optic fiber connection component, convenience and quickness in plugging and unplugging of the adapter and the connector can be achieved, locking reliability is realized, and problems of locking force insufficiency and inconvenience in pluggingand unplugging of an existing optic fiber connection component are effectively solved.

The invention discloses a telescopic device which comprises an outer tube, an inner tube and a connecting sleeve, wherein the upper end of the inner tube extends into the outer tube; the upper part of the connecting sleeve is fixedly connected with the lower end of the outer tube; a locking sleeve which sleeves on the inner tube is installed in the lower part of the connecting sleeve; an opening in an axial direction is formed in the locking sleeve; a conical part is arranged on the outer wall of the locking sleeve; and a rotation stopping structure is arranged between the inner tube and the locking sleeve. According to the telescopic device, when the inner tube rotates, threads between the connecting sleeve and the locking sleeve make the locking sleeve move in the axial direction, the inner wall of the connecting sleeve extrudes the conical part of the locking sleeve to make the locking sleeve shrink towards the axis and lock the inner tube, and locking or unlocking can be realized by rotating the inner tube; the telescopic device between the outer tube and the inner tube is arranged at the lower end of the outer tube, and a longer interval section does not exist between the lower end of the outer tube and the inner tube, so that shaking cannot occur between the outer tube and the inner tube after locking is finished; and the locking force of a leg tube is strong, the stability is high, the operation is simple and rapid, and the stability of a product can be effectively improved.

The invention discloses a lock-type hoisting device which comprises a supporting seat, a spreading shaft, an upper limited block, a drawing wheel, a lower limited block, a spreading pin and a bearing block, wherein the spreading shaft is inserted in a middle hole of the supporting seat, and the external lateral surface of a pin body of the spreading shaft is provided with threads; the upper limited block is fixed on the supporting seat; the central shaft of the drawing wheel is in thread fit with the spreading shaft; the lower limited block is fixed on the supporting seat, so that the spreading shaft can not rotate with the drawing wheel; the spreading pin is fixed on the supporting seat, and the upper part of the spreading shaft is nested into the spreading pin; and the bearing block is locked on the spreading pin. The lock-type hoisting device disclosed by the invention is simple in structure and easy to operate, can generate a large locking force, and does not fall off, thereby improving the security of the hoisting device.

The invention discloses a self-locking compression type portable grounding wire capable of being assembled and disassembled quickly, which comprises an upper clamping plate, a lower clamping plate, avertical clamping plate, a movable clamping plate, a supporting rod, a fixed clamping piece, a movable clamping piece, a round rod and an insulating rod, and is characterized in that one end of the upper clamping plate is connected with the upper end of the vertical clamping plate, one end of the lower clamping plate is connected with the lower end of the vertical clamping plate, one end of the supporting rod is connected with one end of the insulating rod, a first round hole is formed in the lower clamping plate, the other end of the supporting rod penetrates through the first round hole andextends out of the first round hole, the movable clamping plate is arranged at the end, which extends out of the first round hole, of the supporting rod, a wedge-shaped groove is formed in the supporting rod, a cavity is formed in the lower clamping plate, the fixed clamping piece is arranged on the side, which is close to the vertical clamping plate, in the cavity, the movable clamping piece is arranged on the side, which is away from the vertical clamping plate, in the cavity, a spring is arranged at the end, which is away from the vertical clamping plate, of the movable clamping piece, theother end of the spring is connected with the lower clamping plate, a clamping plate is arranged at the end, which is close to the vertical clamping plate, of the movable clamping piece and matched with the wedge-shaped groove.

The present invention relates to a folder for file, letter head pliers, etc., which can prevent accidental movement of a clamp in a clamping state in a releasing direction. A lining plate (120) is adhibited with a plurality of reinforcing sheets on one edge therefore the lining plate is hard to bend compared with other parts. Furthermore one edge of each reinforcing sheet, which is opposite with other reinforcing sheet, and one edge of another reinforcing sheet, which is opposite with the former edge, are used as guiding parts. The clamp (200) is used for clamping the lining plate (120) and has an approximately U-shaped section. Furthermore the lining plate (120) is sandwiched in the approximate U-shaped section. At positions which are opposite with the guiding part, the projections with widths which are approximately same with that of the guiding part are set in a direction from one side of the U-shaped section to the other side. Each projection is respectively inserted in a corresponding guiding part.

The invention discloses an improved vacuumizing sealing machine capable of automatically locking a cover. The improved vacuumizing sealing machine comprises an automatic cover locking mechanism, the automatic cover locking mechanism comprises a cover locking driving mechanism, at least two cover locking grooves and cover locking sliding blocks corresponding to the cover locking grooves, the cover locking grooves are matched with the cover locking sliding blocks in a buckled mode, the cover locking driving mechanism is matched with the cover locking sliding blocks in a transmission mode, and when the cover locking sliding blocks move relative to the cover locking grooves, an upper cover moves downwards; a vacuumizing device comprises a vacuumizing chamber and an air exhaust assembly, the vacuumizing chamber is arranged on the front side of the vacuumizing sealing machine, the air exhaust assembly is installed on the top of the front side of a lower base, the air exhaust assembly is movably provided with an air exhaust pipe, the air exhaust pipe is arranged in the vertical direction, and a vacuumizing pump is connected with the vacuumizing chamber and / or the air exhaust assembly; and the vacuumizing chamber is provided with a pressure relief opening, the upper cover and / or the lower base are / is provided with a pressure relief mechanism, and the pressure relief mechanism is matched with the pressure relief opening in a sealed mode. The cover locking does not need pre-pressing, the cover loosening does not need manual unlocking of a lock catch, the pressure relief force is large, two air exhaust devices are combined, the adaptability is high, the structure is simple, and the cost is low.

A quick release locking mechanism (10), a handle structure (100) and a handheld platform (1000). The quick release locking mechanism (10) includes a cam (112), a locking block (122) and a trigger block (132). The cam (112) includes a cam body (1122), a protrusion (1124) and a trigger (1126). The locking block (122) includes a contact portion (1222) and a locking portion (1224) corresponding to the protruding portion (1124), and the locking portion (1224) is used to cooperate with the locking surface (322) of the fitting to trigger The block (132) includes a trigger protrusion (1322), the trigger block (132) can move relative to the cam (112), and when the trigger block (132) is in the first position, the trigger protrusion (1322) interferes with the trigger portion (1126) ; When the trigger block (132) is in the second position, the trigger projection (1322) releases the trigger portion (1126).