615results about How to "Large locking force" patented technology

A clip has a head part adapted to be contacted with a peripheral edge of a fitting hole in a panel to be fitted, and a leg part adapted to be inserted into the fitting hole thereby to be engaged with the peripheral edge of the fitting hole. The leg part has a post suspended from a center of a lower face of the head part, at least three projections which are radially extended from the post in a diametrical direction and connected to the lower face of the head part at their upper ends, and engaging pieces which are extended from these projections in a circumferential direction to be respectively positioned between the projections. The engaging pieces are connected to the head part at their upper ends, and provided with slits between their circumferentially extended ends and the opposed projections.

The invention relates to a lamp installing bracket and a lamp thereof. The lamp installing bracket comprises a supporting plate for connecting the lamp; a bracket is rotatably connected with the supporting plate; a cambered hole is arranged in the supporting plate; a regulating piece passes through the bracket and the cambered hole; a fastening piece is arranged at one end where the regulating piece passes through the cambered hole; the fastening piece is used for being matched with the regulating piece to lock the bracket and the supporting plate; and the regulating piece is arranged below the connecting point of the bracket and the supporting plate. The lamp installing bracket of the invention can reduce the strength for adjusting the angle of the lamp and can also increase the locking force between the bracket and the supporting plate, so that the lamp can be more stably fixed and has large adjustable angle range, simple structure and convenient use.

The invention discloses an adjustable spanner, and belongs to the technical field of hardware tools. The adjustable spanner mainly comprises a spanner body, a sleeve hole and grooves distributed uniformly are formed in the spanner body, a movable fluted disc and a pawl which are matched mutually are arranged in the spanner body, an arc groove A matched with the grooves is formed in the movable fluted disc, sliding blocks are arranged in the grooves, penetrate through the arc groove A through a pin shaft and are movably connected with the movable fluted disc, and the included angle a between the tangent line of any point on the circumference of the movable fluted disc and the tangent line, passing the point, of the outer circumference of the arc groove A is 45-60 degrees; an arc groove B is concentrically formed in the movable fluted disc; the pawl is hinged to the spanner body through a pin shaft, and an elastic device is arranged between the pawl and the spanner body. The adjustable spanner is simple in structure, convenient to use, capable of tightening fasteners different in specification and size, large in locking force and not prone to slipping, protects a workpiece from injury and is mainly used for screwing a bolt or nut.

Into a housing (3) is hermetically inserted an annular piston (5), and into the annular piston (5) is hermetically inserted an output rod (8). A spring (14) located below the piston (5) moves the piston (5) upward for locking, pressurized oil in a release chamber (12) formed above the piston (5) moves the piston (5) downward for releasing. On an upper surface of the piston (5) is provided a pressing surface (38), on an inner periphery of a peripheral wall of the release chamber (12) is provided a first tapered surface (41), which narrows upward, and on an outer periphery of the output rod (8) is provided a second tapered surface (52), which narrows downward. Between the pressing surface (38), the first tapered surface (41) and the second tapered surface (52) are inserted a plurality of balls (55) circumferentially at intervals. Thereby, when the spring (14) moves the piston (5) upward for locking, a moving stroke of the output rod (8) is larger than that of the piston (5).

The invention relates to a mold locking device of a hollow plastic product forming machine, belonging to the field of a plastic product forming machine. The hollow plastic product forming machine comprises a left mold frame and a right mold frame, the mold locking device comprises a mold-locking actuating cylinder, a mold locking box and a mold-locking actuating cylinder grabbing mechanism, wherein the mold locking box comprises a mold locking box body, a cover plate, a first guide plate and a second guide plate; the mold-locking actuating cylinder grabbing mechanism comprises an upper actuating cylinder, an upper actuating cylinder seat plate, an upper engagement clamp block, a lower actuating cylinder, a lower actuating cylinder seat plate and a lower engagement clamp block; and the mold-locking actuating cylinder is horizontally arranged on the left mold frame, and cylinder column engagement teeth are formed at the surface of a mold-locking actuating cylinder column of the mold-locking actuating cylinder, at one end facing the mold locking box body. The mold locking device has the advantages that the closing effect of one pair of semi-molds can be ensured; the upper engagement clamp block and the lower engagement clamp block can be prevented from deflection to affect clamping forces on the mold-locking actuating cylinder column; the stability of vertical movement of the upper engagement clamp block and the lower engagement clamp block can be maintained in a long time; and the structure can be simplified, large locking forces for the mold-locking actuating cylinder column can be obtained with small mold locking forces, and electric energy can be saved.