42results about How to "Self-locking stability" patented technology

The invention relates to an automatic zipper head which comprises a pull head body, a pull piece, a hook, a straight elastic piece and a cap which are sequentially arranged from bottom to top. Two ends of the hook are both embedded in the pull head body, a containing space is formed by the hook and the pull head body to contain the end portion of the pull piece, two ends of the cap are mechanically connected with the pull head body, two ends of the straight elastic piece are mechanically connected on the inner wall of the cap, and the middle of the straight elastic piece is adjacently connected with the hook. The automatic zipper head has the advantages of being simple and convenient to operate, convenient to assemble and the like.

The invention discloses an explosion-proof ball, which comprises a ball body, a ball cover, a ball cover positioning control arm, a supporting plate and a worm reduction gear. The ball cover positioning control arm is fixedly connected with the supporting plate, and the supporting plate is fixedly connected with the ball cover. The explosion-proof ball is characterized in that an arc-shaped groove at the lower end of a vertical rod of the ball cover positioning control arm is movably connected with central shafts at two ends of the ball body; a swinging rod and a torsion spring are sleeved on a swinging rod shaft hinged with the supporting plate; a chain hinged with the upper end of the swinging rod is sequentially in wrapped connection with a second guide wheel hinged on the ball body, a sprocket wheel fixedly connected onto an output shaft of the worm reduction gear, a first guide wheel hinged on the ball body, and a third guide wheel; the tail end of the chain is hinged with the ball cover; an input shaft of the worm reduction gear is fixedly connected with an output shaft of a speed increaser; an input shaft of the speed increaser is fixedly connected with a hand wheel or a motor; and a supporting wheel hinged with the lower end of the supporting plate is in contact with and matched with a bracket of the ball body. The explosion-proof ball has the advantages that the structure is simple, the ball cover is convenient to be lifted, opened and closed, the action is reliable, the self-locking of the ball cover is firm, the marching bumpiness in various road conditions is not worried, and the like.

A household appliance switch bracket with a self-locking device comprises a switch bracket body, a door hook support, a microswitch and a door hook. The door hook is located on a door body. The household appliance switch bracket is characterized in that a rotary joint, the door hook and a slide bar are arranged on the switch bracket body, the rotary joint is provided with a spring bolt and a self-locking hole, the door hook is provided with a clamping hole, the slide bar is provided with a guide pillar, the rotary joint is clamped to the clamping hole and the guide pillar through the spring bolt and the self-locking hole respectively, and then self-locking structures of the appliance switch bracket are formed. According to the household appliance switch bracket with the self-locking device, the door hook and the rotary joint form one self-locking structure, the slide bar and the rotary joint form the other self-locking structure, the two different self-locking structures enable the household appliance switch bracket to be self-locked more stably, and efficient self-locking of the household appliance switch bracket is realized; the door hook support makes contact with the rotary joint and the slide bar, so that self-locking of the household appliance switch bracket is relieved; meanwhile, the household appliance switch bracket is of a mechanical structure, is high in reliability and has the advantages of being simple and reasonable in structure, quick and convenient to operate, long in service life, high in stability and the like.

The invention relates to a self-locking type buckle scaffold which is convenient for adjusting the height of the frame body. The device includes a vertical bar and a horizontal bar. The vertical bar is sleeved with a ring-shaped connecting plate, and the middle bar is wound with a spiral fin. A rise angle a is formed between the spiral fin and the horizontal plane. The relationship between the equivalent friction angle b is: a ≤ b ≤ 1.2a, a ring disc is sleeved on the middle rod above the connecting disc, and a plurality of sliding rails are fixed on the eaves of the lower surface of the ring disc, each Slide rails are slidably connected with sliders, one end of the slider is fixedly connected with an arc-shaped plate, and the inner surface of the arc-shaped plate is provided with teeth, and the other end of the slider is connected with the side eaves of the connecting plate through a connecting rod. And the connecting discs cooperate to form a crank slider mechanism. This device not only achieves the effect of adjusting the height of the horizontal scaffolding, but also makes the self-locking of the scaffolding more firm. It is suitable for industrial production and has strong practicability.

The invention discloses a sunshade, which comprises a bracket and a roof. A plurality of support rods are arranged vertically on the bracket. A mounting rod located above the support rod is arranged on the roof. A self-locking rod is arranged between the support rod and the mounting rod. Mechanism; the self-locking mechanism includes a locking plate arranged on the mounting rod, first racks are provided on both sides of the locking plate, and a locking groove for sliding and embedding of the locking plate and the first rack is provided on the supporting rod; the supporting rod The outer wall of the sliding sleeve is slidingly connected with a sliding sleeve, and the second rack is arranged in the sliding sleeve; a connecting groove is arranged on the supporting rod, and a gear meshing with the first rack and the second rack is connected in the connecting groove; the outer wall of the mounting rod An elastic block is provided, and a card slot is provided on the inner wall of the sliding sleeve. The present invention has the following advantages and effects: by setting a self-locking mechanism that automatically locks and fixes, the locking and fixing of the support rod and the installation rod is realized, that is, the self-locking and fixing of the bracket and the roof is realized, so that the assembly process of the bracket and the roof is easier. It is easy and convenient, achieving the effect of convenient installation.

The present invention discloses a RF coaxial contact pin connector with high mechanical strength and reliable self-locking / unlocking performance. It contains contact head, contact pin, insulator, housing, connecting sleeve, spring, clamping ring, steel ball, and arc-shaped trough. Said invention has high mechanical strength, stable and reliable self-locking and unlocking advantages.

The invention relates to a pneumatic self-locking clamping fixture. The fixture comprises a clamping device, wherein the clamping device adopts a wedge clamping mechanism, the wedge clamping mechanism comprises a wedge column (10) and a roller (9), a piston rod mounting double-screw bolt is arranged at one end of the wedge column (10), and the roller (9) is arranged on an inclined working surface of the wedge column (10). Compared with the prior art, the fixture has the beneficial effects as follows: clamping self-locking is controlled by the aid of a double-acting air cylinder, convenient and quick mounting and dismounting are realized, automatic and synchronous clamping is realized by the aid of a double-pressing-plate clamping structure, and the fixture can clamp a to-be-machined part firmly and realize quick self-locking in an instant and can also release the to-be-machined part in an instant after machining is completed, so that the mounting and dismounting efficiency is substantially improved; two guiding columns are arranged to form a cross structure, and thus relatively small workpieces can be clamped to be machined; the fixture has an oblong appearance, and multiple machining stations can be arranged according to sizes of workpieces, accordingly, the multiple workpieces can be machined simultaneously, the machining cost is saved, and the economic benefit is substantially increased.

The invention relates to a self-lock slide fastener head, which comprises a slide block, an elastic piece, a pulling piece and a cap cover, wherein the pulling piece is sleeved on the cap cover; the slide block is provided with a connecting block and a through hole; the front end of the cap cover is pivoted on the connecting block; the rear end of the cap cover is provided with a buckle piece; thebuckle piece is inserted in the through hole of the slide block; and one end of the elastic piece is connected with the connecting block, while the other end is contacted with the cap cover to applyelastic force on the cap cover. The slide fastener head has the advantages of stable structure, firm self locking, fewer required elements, and favorability for mechanical automatic assembly.

An orthopedic knee arthroscopic joint spreader, comprising a hollow cylindrical extension column, the front end of the extension column is provided with a control panel that can swing up and down, and the top and bottom ends of the control panel are provided with a vertically movable, front and back swing The extension head; the outer circumference of the rear end of the extension column is rotatably connected with a disc-shaped rotating disk, the rear end surface of the extension column is fixedly connected with a pointer plate, and the rotating disk is hinged on the inner side of the ring-shaped positioning ring. The left and right ends of the positioning ring are provided with inserting plates that can move back and forth. The front ends of the inserting plates are hinged with clamping plates that can swing left and right. The bottom ends of the clamping plates are connected by a clamping belt. The left and right ends of the clamping belt The clamping plate protrudes and attaches with Velcro. The invention effectively solves the problem that the spreader has too high requirements on the incision in the current knee arthroscopic operation, and the spreader cannot effectively stretch the patient's knee joint for a long time.

The invention provides a cooling fin fixing structure, which is suitable for accommodating of cables of electronic products. The fixing structure comprises a cooling fin with a first locking hole, a mainboard with a second locking hole, and a locking piece which comprises a fixed column, an elastic arm, a gasket and a locking arm; the fixed column comprises a column body and a clamping hook; a containing groove is formed between the column body and the clamping hook; the gasket is provided with a through hole; when an external force is applied to the locking piece, the locking arm penetrates through the first locking hole of the cooling fin and the second locking hole of the mainboard, the gasket is abutted with the cooling fin, and the elastic arm is pressed to be bent for enabling the clamping hook to penetrate through the through hole of the gasket, the first locking hole of the cooling fin and the second locking hole of the mainboard; and when the external force is released, the locking arm enters the containing groove of the clamping hook and supports the clamping hook to be open, and the clamping hook hooks the mainboard to realize self-locking. The self-locking is stable andfirm; the installation is rapid; the structure is simple; and the cost is low.

The invention discloses a rapid clamping mould box which comprises a movable mould box and a clamping mechanism, wherein the movable mould box is defined by a baseplate, a front end plate, a rear end plate and two side plates, the front end plate and the rear end plate are respectively fixed at the front and rear ends of the baseplate, the two side plates are respectively arranged at the left andright sides of the baseplate and fixedly connected with the front end plate and the rear end plate, and a plurality of baffle plates parallel to the front end plate and the rear end plate are fixed between the two side plates; and the clamping mechanism is used for clamping battery packs, and comprises a connecting plate, two draw bars, a plurality of pressing plates and a rapid clamp, the pressing plates are fixed between the two draw bars and distributed at the intervals of the baffle plates, the rapid clamp is used for driving the connecting plate to make a forward and backward movement and fixedly connected with the connecting plate, the front ends of the two draw bars are respectively fixed at the two sides of the connecting plate, the rear ends of the two draw bars extend along the direction parallel to the side plates, and the connecting plate is fixedly connected with the rapid clamp. The rapid clamp drives the connecting plate to make a forward and backward movement along thedirection parallel to the draw bars, therefore, the clamping stroke of the clamping mould box is long, so that the clamping mould box is suitable to be used for battery packs with various thicknesses, and the type and quantity of the mould boxes are effectively reduced.

The invention discloses a position-limiting irradiation sample hole plug, which comprises a main body of the irradiation plug, an upper end cover is installed on the upper end of the main body of the irradiation plug, an operating rod is movably installed in the upper end cover, and a Self-locking mechanism, the lower end of the above-mentioned operating rod is provided with a self-locking trigger end, the middle part of the above-mentioned operating rod is provided with a first buckle; the lower part of the above-mentioned upper end cover is provided with a second buckle, which is used for mutual interaction between the second buckle and the first buckle Locking, the lower part of the above-mentioned upper end cover is also equipped with a wedge-shaped telescopic mechanism, in order to solve the complex structure of the irradiation sample hole plug, and the irradiation sample hole plug needs to be displaced to the locking position, and then locked by artificial means. The problem of inefficiency.