Abstract: An industrial heavy load electric linear actuator includes a gearbox (10), an electric motor (20), a lead screw (30), an extension pipe (40) and a load baring structure (50). The electric motor (20) is connected to the gearbox (10). A portion of the lead screw (30) is received inside the gearbox (10) and driven by the electric motor (20), and another portion of the lead screw (30) is extended out of the gearbox (10). The extension pipe (40) is movably fastened to the lead screw (30). The load bearing structure (50) includes a sleeve (51), a bearing (52), a fastening element (53), a fixation seat (54) and a rear supporting seat (55). The sleeve (51) is mounted to the lead screw (30) and holds the bearing (52) jointly with the fastening element (53). The fixation seat (54) and the rear supporting seat (55) hold the bearing (52) at outer perimeters of the sleeve (51) and the fastening element (53).

Abstract: An actuator with a worm gear positioning mechanism, which includes: a shell casing (10); a motor (20) having a worm rod (21); a transmission assembly (30) having a guiding screw rod (31), a worm gear (32) and a bearing (33), the worm gear (32) having an annular member (321) having an inner circumferential surface (322); an outer tube (40) having an outer circumferential surface (41) attached to the inner circumferential surface (322), the worm gear (32) being positioned between the worm rod (21) and the outer tube (40) on a radial direction; and a telescopic tube (50) disposed in the outer tube (40) and having an inner tube (51) and a screw nut (52), the screw nut (52) moveably screwed with the guiding screw rod (31) to make the inner tube (51) linearly movable relative to the outer tube (40).

Abstract: A lifting table stand includes a pair of telescopic columns, a carrier, an actuation module, and a passive mechanism. Each telescopic column includes multiple tubes adapted to sheathe with each other and move telescopically relative to each other. The carrier includes a beam straddling the telescopic columns and a pair of support members perpendicularly connected to two ends of the beam. The actuation module includes a receiving member detachably installed to the beam and a driver connected to the receiving member. The passive mechanism includes a transmission shaft and a pair of gear sets installed in the tubes. The transmission shaft passes the driver and is connected to each gear set. Since the receiving member is detachably installed to beam, the actuation module may be changed to different types to control the elevation of the lifting table stand.

Abstract: A lightweight beam structure includes a first and a second frame. The first frame includes an upper plate, two inner side plates downward bent and extended from two sides of the upper plate, two outer side plates upward bent and extended from two inner side plates respectively and two fixing plates bent and extended from two outer side plates respectively. Each outer side plate is formed outside each inner side plate. A groove is formed between each inner side plate and each outer side plate. The second frame is connected with the first frame and includes a top plate and two intermediate plates downward bent and extended from two sides of the top plate. Each intermediate plate is received in each groove. The top plate is formed over the upper plate. Therefore, the stability is maintained and the weight is reduced so that the material costs may be decreased.

Abstract: The disclosure is a beam structure for a leg stand of an electric table, which includes a first frame and a second frame. The first frame includes an inner bottom plate, an inner side plate and an inner embedding plate. The inner embedding plate is formed on outside of the inner side plate. The inner embedding plate includes an exposed section. The second frame is movably connected with the first frame. The second frame includes an outer bottom plate, an outer side plate and an outer connecting plate. The inner bottom plate is formed above the outer bottom plate. The inner side plate is formed on inside of the outer side plate. The inner embedding plate is correspondingly embedded in the outer connecting plate. The exposed section is exposed from the outer connecting plate.

Abstract: The disclosure is a nut structure for an electric pushing rod. The electric pushing rod has a guide screw (A) with an outer thread (A1). The nut structure includes a metal cylinder (10) and a plastic intermediate component (20). The metal cylinder (10) has a pivot hole (11) being passed through by the guide screw (A). An inner wall of the pivot (11) is provided with an inner thread (12). The plastic intermediate component (20) covers the inner thread (12) and is disposed of between the outer thread (A1) and the inner thread (12). The plastic intermediate component (20) includes a fixed side thread (21) mounted on the inner thread (12) and a driving side thread (22) screwed with the outer thread (A1). Therefore, the strength may be enhanced to avoid both the nut structure from being broken and the driving side thread (22) from getting stripped.

Abstract: A leg structure of an electric table includes a pair of support assemblies (10), multiple horizontal rods (20) and a pair of drive assemblies (30). The support assemblies (10) are arranged spacedly and parallelly to each other. Each support assembly (10) includes a connecting rod (11) and a pair of telescopic posts (12). Each telescopic post (12) is connected and fixed to the connecting rod (11). Each horizontal rod (20) is separately connected to each support assembly (10) and is parallel to each other. Each drive assembly (30) is separately received in each support assembly (10) for driving each telescopic post (12) to ascend or descend. Therefore, the leg structure of an electric table may be easily assembled and the whole structure is stable.

Abstract: A linear actuator (1) and the centrifugal safety device (50) thereof is disclosed. The safety device (50) includes an outer socket (51) having a stop portion (512) and a first accommodation portion (513), an inner socket (53) having a raised portion (531) and a second accommodation portion (532) and a centrifugal assembly (55) having a centrifugal block (551) and an elastic element (555). The inner socket (53) drives the centrifugal assembly (55) to rotate. If the centrifugal force of the centrifugal block (551) is smaller than the elasticity of the elastic element (555), then the centrifugal block (551) is limited in the second accommodation portion (532) by the elastic element (555), or else the centrifugal block (551) moves into the first accommodation portion (513) and clamped by the raised portion (531) and the stop portion (512).

Abstract: A lifting device with a cable management is provided. The lifting device includes: an outer pipe, an actuation mechanism, a linkage member, a cable, and a cable management component. The actuation mechanism is accommodated in the outer pipe and has a motor and a screw rod. The linkage member is accommodated in the outer pipe and mutually screw-fitted with the screw rod to operate, and moves relative to the outer pipe. The cable has a spiral coiled cable unit. A shaft core line in parallel with the screw rod is defined by the spiral coiled cable unit. The cable management component is disposed in the outer pipe and in parallel to the shaft core line. The spiral coiled cable unit is reeled on the cable management component. Accordingly, the cable may be stably positioned and the cable may be prevented from rubbing or being tangled with the screw rod.

Abstract: A lifting table stand includes a pair of telescopic columns, a carrier, an actuation module and a passive mechanism. Each telescopic column includes multiple tubes adapted to sheathe with each other and move telescopically relative to each other. The carrier includes a beam straddling the telescopic columns and a pair of support members perpendicularly connected to two ends of the beam. The actuation module includes a receiving member detachably installed to the beam and a driver connected to the receiving member. The passive mechanism includes a transmission shaft and a pair of gear sets installed in the tubes. The transmission shaft passes the driver and is connected to each gear set. Since the receiving member is detachably installed to beam, the actuation module may be changed to different types to control the elevation of the lifting table stand.

Abstract: A retractable column structure includes a metal outer tubular member, a retaining bracket, and an inner tubular member. The outer tubular member includes a wall having outer, inner and end surfaces. The outer tubular member includes slots extending from the end surface to the inner surface. A rear end of each slot includes a hook protruding out of the inner surface. The retaining bracket includes a frame member abutted against the wall and locking hooks inserted into the inner surface and locked onto each corresponding hook. The inner tubular member moveably penetrates into the retaining bracket disposed between the tubular members and is concealed inside the outer tubular member. Accordingly, excellent support of inner and outer tubular members can be achieved for stable sliding therebetween.