60results about How to "Good self-locking function" patented technology

The invention relates to a fast plugging and self-locking coaxial connector which comprises a female connector and a male connector, wherein the male connector comprises a connecting sleeve, a shell, an insulator and a contact pin. The fast plugging and self-locking coaxial connector is characterized in that the male connector also comprises a compression spring, balls, an opening closing ring and a sealing ring, the connecting sleeve is sleeved at the front part of the shell, the compression spring is installed between the back front part of the connecting sleeve and the shell, a closing ring groove is arranged on the inner wall of the front part of the shell, the balls are distributed on the closing ring groove, the opening closing ring is inlaid in the closing ring groove, the balls are arranged in a ball hole, a circle of ball grooves is arranged at the front part of an inner conical surface of the connecting sleeve, the balls can be sleeved outside the shell so as to switch between the inner conical surface of the connecting sleeve and the ball groove when moving back and forth, and the sealing ring is installed in the sealing groove on the inner wall of the shell. The invention has the advantages of reasonable structure, fast plugging, strong self-locking function and favorable contact.

Provided is a retractable pedal for an automobile. The pedal comprises a driving support (2), a drive mechanism (4) and a footrest (5), wherein both the driving support (2) and the drive mechanism (4) are installed on the same side of the bottom of an automobile body; the driving support (2) comprises a first transmission mechanism and a first connecting rod (2d), and the front end of the first connecting rod (2d) is fixedly connected to the footrest (5); the first transmission mechanism drives the first connecting rod (2d) to expand and retract; the pedal further comprises at least one driven support (3) which synchronously moves with the driving support (2). According to this pedal, a traditional gear transmission mechanism is omitted so as to reduce manufacturing costs and reduce the generation of abnormal sounds, and the footrest can be ensured to retract in place.

A lockset for tool case belongs to the technical field of hardware manufacture and comprises a lock shell, a lock cylinder body, a spring, a push plate, a lock hook plate and a torsion spring, whereinthe middle of the lock shell is provided with a lock cylinder hole, the front end thereof a panel and the back end thereof a lock hook plate bracket, the hole wall of the lock cylinder hole is provided with a lock tongue slot, and the bottom of the lock cylinder hole is provided with a supporting seat and a lock cylinder positioning lug; the lock cylinder body is arranged in the lock cylinder hole, the middle of the front end of the lock cylinder body is provided with a lock cylinder and a lock tongue and the back end thereof is provided with a spring seat, a slide slot is arranged on the spring seat, and the tail of the spring seat is provided with a square head; the spring is sheathed at the spring seat of the lock cylinder body and is contacted and matched with the supporting seat; thepush plate is fixed on the square head; the lock hook plate is pivoted on the lock hook plate bracket and provided with a push pin and a lock hook pin; and the torsion spring is mounted on a pin shaft, a first torsion spring pin of the torsion spring is fixed with the lock hook plate and the second first torsion spring pin thereof is fixed with the lock hook plate bracket. The invention has the advantages of good concealment, outstanding anti-pry and anti-theft performance, good self-locking function, long service life, labor-saving and convenient operation, simple structure and good closeness effect.

The invention provides a self-locking type manual pressure machine which is mainly composed of a machine body 1, a working table 2, a pressing rod 3, a pressing head 5, a connecting plate 6 and some transmission mechanisms. The lever principle is applied ingeniously, thus the pressing head obtains larger pressure, by the adoption of a ratchet wheel and pawl mechanism, the device keeps a certain self-locking function, a gear and rack transmission mechanism is utilized, and when the pressing head works, stress is uniform. The device is simple in structure, convenient to adjust and high in reliability, and has a good self-locking function, and continuous pressure of the pressing head can be kept.

The invention relates to a switch reluctance electromotor with the function of power-off self locking. An electromotor stator comprises N excitation salient pole pairs, a rotor comprises M permanent magnet salient pole pairs, N is a natural number which is more than or equal to 2, M is an even number which is more than or equal to 2, M=kN, k is the even number when N is the odd number, k is the natural number when N is the even number, and a closed-magnetic return path is formed by the excitation salient pole pairs and the permanent magnet salient pole pairs under the condition of power off, so that an electromotor can be self-locked. In order to lead the electromotor to be normally turned on, the switch reluctance electromotor adopts the radial asymmetric structure design between some excitation salient pole pairs on the stator or some permanent magnet salient pole pairs on the rotor, so that the electromotor which is self-locked under k statues always has one salient pole of the excitation salient pole pairs on the stator to be shifted relatively to the salient poles of the permanent magnet salient pole pairs on the rotor in a misplacing way, therefore, the electromotor can be guaranteed to be turned on by an confirmed rotation direction. The switch reluctance electromotor is extremely high in self-locking capability under the status of power off, and is simple and reliable in excitation control method.

The invention relates to an inspecting device for an ophthalmology department, in particular to an adjustable inspecting device for the ophthalmology department. The adjustable inspecting device for the ophthalmology department achieves the technical purposes that the structure is flexible, regulation can be performed, the using requirement of different workers can be met, and burdens of medical workers and patients can be relieved. According to the technical scheme, the adjustable inspecting device for the ophthalmology department comprises a base, a large fixing plate, a first lifting plate,a second lifting plate, a bed plate, a rotating shaft, a worm gear, a worm, a long connecting shaft, a first bearing pedestal, a second bearing pedestal and the like; the large fixing plate is connected to the top of the base. The adjustable inspecting device for the ophthalmology department is flexible in structure, can be adjusted, can meet the using requirements of different workers, can relieve burdens of medical workers and patients, and is capable of performing examination and treatment on patients conveniently, safe and reliable in performance, convenient to use, easy to maintain and low in maintenance cost.

The invention relates to a transmission self-locking device for a rotary Z shaft of a spray-painting device. The transmission self-locking device comprises a rectangular base frame (12), wherein the rectangular base frame (12) is provided with a horizontal base plate (13); an X beam, a Y beam and a Z beam capable of moving relatively are arranged on the rectangular base frame; a rotary Z shaft (9) is arranged inside the Z beam; the lower end of the Z shaft (9) is provided with a spray-painting head (11). The transmission self-locking device is characterized in that the upper end of the Z beam (10) is provided with a supporting plate (8); the supporting plate (8) is provided with a worm and gear speed reducer (6); the input shaft of the worm and gear speed reducer (6) is connected with a motor shaft of a motor (5); the output shaft is provided with a belt wheel I (7); a belt wheel II (4) connected with the belt wheel I through a transmission belt is also arranged at the upper end of the Z shaft (9). The transmission self-locking device has the beneficial effect that the Z shaft has a good self-locking function through the application of the worm and gear speed reducer.

The invention relates to a transmission self-locking device for a rotary Z shaft of a spray-painting device. The transmission self-locking device comprises a rectangular base frame (12), wherein the rectangular base frame (12) is provided with a horizontal base plate (13); an X beam, a Y beam and a Z beam capable of moving relatively are arranged on the rectangular base frame. The transmission self-locking device is characterized in that one side of the Z beam (10) is provided with a linear guide rail (9); a moving rack (3) on the Y beam is provided with a linear bearing (7) matched with the linear guide rail (9); a worm and gear speed reducer (4) is also arranged on the moving rack (3); an input shaft is connected with a motor shaft of a motor (5); an output shaft is provided with a gear wheel (6); the other side of the Z beam (10) is provided with a gear rack (8) meshed with the gear wheel (10). The transmission self-locking device has the beneficial effect that the Z beam has a good self-locking function through the application of the worm and gear speed reducer, and the Z beam adopts aluminum extruded sections, so that the inertia generated when the Z beam moves can be reduced.

The invention discloses an adjustable wheelchair seat lifting device which comprises a seat, a lifting plate, two connecting rods, two slide bases and a driving mechanism. The seat is arranged on a wheelchair in a liftable mode. The lifting plate is fixedly arranged at the bottom of the seat. The two connecting rods are located at the lower portion of the lifting plate in a crossed mode. The upper ends of the two connecting rods are respectively hinged to two ends of the lifting plate. The lower ends of the two connecting rods are hinged to the slide bases respectively. The driving mechanism is used for driving the two slide bases to move in the opposite directions at the same time. By driving the two slide bases to move in opposite directions, the two connecting rods can drive the lifting plate so as to drive the seat to rise and fall, the height of the seat can be flexibly adjusted, and therefore people who are inconvenient to walk can conveniently switch between the wheelchair and a bed.

The invention discloses a screw-type adjusting plate for an electric power line, belongs to the technical field of electric power line connection fittings, and aims at solving the technical problems that a wire length adjusting device for the electric power line is low in labor intensity and can carry out live-working. According to the technical scheme, the screw-type adjusting plate for the electric power line comprises an adjusting plate body, a screw body and a slide block body, wherein an adjusting plate connecting hole is formed in one side of the adjusting plate body; a through hole which is narrow in two ends and wide in middle is formed in the middle of the adjusting plate body; a slide chute is formed in the middle of the through hole; a guide rail is arranged at one side of the slide chute; the screw body is arranged in the through hole in the middle of the adjusting plate body; the slide block body is arranged in the through hole in the middle of the adjusting plate body; a through threaded hole is formed in the slide block body; the slide block body is in threaded connection with the screw body through the through threaded hole; one end of the slide block body and the slide chute are in clearance fit; a guide rail stop bench at the other end and the guide rail are in sliding connection; and a slide block connection hole is formed in one side of the slide block body. The screw-type adjusting plate for the electric power line is applied to an adjustment of wire sag of the electric power line.

The invention discloses a belt wheel tensioning and fast-changing device which comprises a machine frame; a machine is arranged at the top of the machine frame; guide rails are arranged on the two sides of the lower part of the machine frame; a motor support is arranged on the guide rails in a spanning manner and can move along the guide rails; a motor is fixedly arranged on the motor support and is connected with the machine through a belt; a lead screw is arranged under the motor support; a motor support nut is arranged on the surface of the bottom of the motor support; the lead screw penetrates through the motor support nut and realizes the effect that the lead screw drives the motor support to move in a threaded connection way; the two ends of the lead screw are placed on the machine frame; a bearing is arranged at the connecting part of the lead screw and the machine frame. The belt wheel tensioning and fast-changing device is simple in structure and convenient to operate, has a good self-locking function, can easily realize the tensioning of the belt and can also realize the fast change of the belt among different machines; meanwhile, the device can be directly mounted on an existing machine, thereby being economic and practical.

The invention relates to a cargo unloading door open and close device using a control device controlling a 5 bar like system, whose change of location enabling the open or close of the down unloading discharge door. It mainly comprises the basic bar system, additive bar system and the control device. One end of the basic bar connects with the joint and installation base or chassis, freely oscillating of the joint at X and Y directions, the other end of the basic bar connecting with one end of the bent lever and crook lever, the other end of the bent lever and the crook lever connecting through joint, with the installation base or chassis formed fixed bar forming 5 bar discharge door and close mechanism.

The invention discloses a geotechnical cloth thickness measuring device, which comprises a base. A vertical plate is fixed on the base; a pressing rod arranged horizontally is hinged to the vertical plate; and a pressure block is hinged at one end of the pressing rod. A support plate being abutted against the pressing rod is fixedly arranged on the base. A gauge is abutted against the upper surface of the pressing rod. An upper pressing ring is fixedly arranged at one end, facing the base, of the vertical rod; a lower pressing ring arranged on the base is abutted against the lower surface of the upper pressing ring; an adjusting tube is fixed on the surface, being opposite to the upper pressing ring, of the lower pressing ring; and at least one straight line is formed in the cross sectionof the adjusting tube. An avoidance hole that accommodates the adjusting tube and cooperates with an upper bottom plate is formed in the base. A limiting ring arranged in the inner cavity of the baseis fixedly arranged at the side of the adjusting tube; a driving screw is arranged at one end, extending into the base, of the adjusting tube in threaded connection; and the driving screw and the baseare in rotating connection; and a driving mechanism for driving the driving screw to rotate around the own axis is connected to the driving screw. Therefore, the damage on the gauge caused by liftingof the pressing rod is damaged and the measurement precision is improved.

The invention relates to a self-locking snap ring which comprises a snap ring body composed of multiple connecting joints hinged together in sequence, and a lock assembly. One end of a bolt of the lock assembly is hinged to one end of the snap ring body. The other end of the bolt penetrates the other end of the snap ring body and a swivel nut and is then provided with a nut. A lock shell is arranged outside the swivel nut. A spring is pressed on the lock shell and the swivel nut. The end of the lock shell is matched with the outer contour of the nut. The swivel nut is provided with a pin. The pin extends into an axial groove of the bolt and an axial through hole of the lock shell respectively. Compared with a traditional quick-detached snap ring, the self-locking snap ring has the beneficial effects that the self-locking and detaching functions are more convenient, the snap ring is rapidly installed, locked and detached, and the requirements for installation reliability and repair economic efficiency of the snap ring are met.

The invention relates to a quick assembling and wiring device for a cable box. The quick assembling and wiring device comprises a cable box connecting plate, cable conveying mechanisms, a cable wiring manipulator and a wiring plate; the cable conveying mechanisms and the cable wiring manipulator are arranged at the bottom of the cable box connecting plate; and the cable conveying mechanisms are symmetrically arranged on the left side and the right side of the cable wiring manipulator; the wiring plate is arranged below the cable wiring manipulator; the cable box connecting plate, the cable conveying mechanisms, the cable wiring manipulator and the wiring plate are all arranged in the cable box; a mounting plate is arranged at the top of the cable box; a connecting sliding rail is fixedly connected to the top of the cable box connecting plate; the left side and the right side of the cable box are respectively and fixedly connected with cable inlet pipes. The quick assembling and wiring device for the cable box can rapidly achieve connection and installation of cables, achieve the automatic operation of cable installation, is safer and more convenient, is convenient to carry, can be conveniently installed in the cable box during wiring, can be used constantly after being installed, and is convenient to disassemble after being used.

The invention provides a shock isolation device, which comprises a shock isolation body and a position limiting mechanism, wherein the shock isolation body is provided with a first through hole in the axial direction; the position limiting mechanism is arranged in the first through hole, and is connected with the shock isolation body. The shock isolation device provided by the invention comprises the shock isolation body and the position limiting mechanism; the position limiting mechanism is arranged in the through hole formed in the shock isolation body; the position limiting mechanism is connected with the shock isolation body; when the shock isolation body generates transverse deformation due to shock, the hole diameter of the first through hole can be reduced in the deformation direction; therefore the shock isolation body can extrude the position limiting mechanism; the position limiting mechanism can limit the shock isolation body to generate too great transverse deformation after being extruded by the shock isolation body, so that the shock isolation device has a good self locking function; further, an object which is subjected to shock isolation and is connected with the upper part of the shock isolation device can be effectively prevented from generating too great horizontal displacement to be disengaged from the shock isolation device.

The invention relates to a transmission self-locking device for a paint spray head rotating shaft of a paint spraying device. The transmission self-locking device comprises a rectangular underframe (14), wherein the rectangular underframe (14) is provided with a horizontal soleplate (15), an X beam, a Y beam and a Z beam, which can make relative movement, are arranged on the rectangular underframe, a rotating Z shaft (9) is arranged inside the Z beam, the lower end of the Z shaft (9) is provided with a paint spray head (11), and the transmission self-locking device is characterized in that a Z shaft (10) is a hollow shell, the upper end of the Z shaft (10) is provided with a motor (5), the lower end of the Z shaft (10) is provided with a worm reducer (12), the lower end of the Z shaft (10) is connected with a motor shaft and an input shaft of the worm reducer (12) through a rotating shaft (16), and the paint spray head (13) is arranged on an output shaft of the worm reducer (12). The transmission self-locking device has the beneficial effects that the Z shaft has a good self-locking function by utilizing the worm reducer.

The invention provides a comprehensive test table for a mass center and a rotational inertia of a large-tonnage product. A lower table board is provided with an air flotation rotary system, a liftingsystem and an inclination auxiliary assembly. The air flotation rotary system and the lifting system are arranged on the front end and the rear end of the lower table board. The inclination auxiliaryassembly is arranged between the air flotation rotary system and the lifting system. The inclination auxiliary assembly can rotate forward in the direction towards the lifting system and rotate backward in the direction towards the air flotation rotary system. An upper table board is arranged above the lower table board. The air flotation rotary system includes an air flotation plate, a main shaft, a bipolar speed reduction device, a secondary planetary reduction gear and a servo motor I. The lower end of the main shaft is connected with the bipolar speed reduction device. The bipolar speed reduction device is connected with the secondary planetary reduction gear. The secondary planetary reduction gear is driven by the servo motor I. The lower end of the main shaft is provided with a rotary encoder. Therefore, the comprehensive test table with high bearing capacity, high precision and high stability is realized.

The invention discloses a vacuum on-load tap changer which comprises a rack, a power driving mechanism, three vacuum envelope switching mechanisms and a transformer winding tap position adjustment device, wherein the power driving mechanism is arranged above one side of the rack, controls a skateboard to perform horizontal stepped movement quickly, and drives the transformer winding tap position adjustment device to move through a driving shaft; each vacuum envelope switching mechanism comprises a shifting fork, a gauge finder and two vacuum envelopes; each shifting fork is driven by the skateboard, and then drives each gauge finder to rotate to drive every two vacuum envelopes to be switched vertically by turns; the transformer winding tap position adjustment device comprises two screw rods, an insulation shaft and two insulation cross beams mounted on nuts of the screw rods; the insulation shaft is driven by the driving shaft to drive the two screw rods to rotate; and the nuts of the screw rods drive the two insulation cross beams to perform longitudinal movement to realize position adjustment of a transformer winding tap. The tap changer has the advantages of low cost, high safety, high precision and long service life.

The invention discloses an electromagnetic braking cooperation mechanism self-locking navigation inertial unit transposition locking mechanism, and belongs to the technical field of space navigation control, and aims to solve the problems in the prior art that a mechanism toothed disc is stuck and cannot be tested continuously, the failure rate is high, the mechanism test error is large, the mechanism state cannot be freely switched, and the test efficiency is low. The electromagnetic braking cooperation mechanism self-locking navigation inertial unit transposition locking mechanism comprises: a mechanism frame; a transmission shaft system positioned in the mechanism frame and in running fit relative to the mechanism frame, wherein the transmission shaft system at least comprises a first transmission locking shaft, a hollow shaft and a second transmission locking shaft which are coaxially arranged in sequence; a driving self-locking device connected with the end portion of the first transmission locking shaft, wherein driving self-locking and rotation driving of the transmission shaft system are realized through the driving self-locking device; an electronic braking device connected with the end portion of the second transmission locking shaft and used for braking the transmission shaft system; and a high-precision split testing device used for measuring the angle change of a navigation inertial unit in the hollow shaft.

The embodiment of the invention discloses an orthodontic bracket and an orthodontic assembly, and relates to the field of medical equipment. The orthodontic bracket comprises a bracket main body and a sliding cover which is arranged on the bracket main body in a sliding manner; a first groove for accommodating an arch wire is formed in the surface of the bracket main body; the sliding cover covers the first groove at the first position and opens the first groove at the second position; one of the bracket main body and the sliding cover is provided with an elastic piece; the other one of the bracket main body and the sliding cover is provided with a self-locking groove matched with the elastic piece; the self-locking groove extends in the sliding direction of the sliding cover; furthermore, a first recess is formed in the wall surface of the self-locking groove; and, when the sliding cover slides to a first position, the elastic piece abuts against the first recess under the elastic effect, so that the sliding cover is limited to slide relative to the bracket main body. According to the orthodontic bracket disclosed by the invention, the arch wire can be conveniently mounted on the bracket main body and locked. Due to the fact that the sliding cover has a good self-locking function, the installed structure has good stability.

The invention relates to a protection method of secondary battery and the intelligent connection components device built-in protection circuit. The method includes: the battery protection circuit is set in the intelligent connection component, when a single cell is abnormal, the detecting module would detect and the control unit would control the electric switch to take action to cut off the cell from battery. The other cells still an intact secondary battery. The intelligent connector is L shape and is set battery protection circuit. At the end of the connector and the corner, there are location holes. The out of the location holes set conductor. Thus, the invention is easy to be manufactured. And the intelligent connector has reasonable structure, easy connecting and reliability of the capacity of the battery.

The invention relates to a non-slip safety ladder with clamping devices and belongs to the technical field of daily life tools. The non-slip safety ladder comprises a left standing column and a right standing column, a plurality of crosspieces are mounted between the two standing columns, the upper end of each of the left standing column and the right standing column is provided with one clamping device, the lower end of each of the left standing column and the right standing column is provided with a tensioning device, and each tensioning device is connected with the corresponding clamping device through a traction rope. The ladder is mainly specifically used for cylindrical structures or suspended platforms with protrusions, and safety is increased.

The invention discloses a connector device of a silencer for a firearm. The connector device is used for achieving rapid installation of the silencer and the firearm. The connector device of the silencer for the firearm comprises a connector body and a locking sleeve, wherein a plurality of radial holes are formed in the connector body; steel balls are in clearance fit with the interiors of the radial holes respectively; a limiting disc is arranged at one end of the connector body; connector threads are arranged at the other end of the connector body; the locking sleeve is in clearance fit with the connector body; one end of the locking sleeve is axially positioned on the limiting disc; the other end of the locking sleeve is axially positioned on a check ring clamped on the locking sleeve; involute-shaped locking grooves corresponding to the steel balls are formed in the inner circumferential surface of the locking sleeve in the circumferential direction and used for limiting the positions of the steel balls in the radial holes; a mounting hole is formed in the end face of the locking sleeve in the axial direction; a positioning spring and a positioning head are sequentially arranged in the mounting hole from inside to outside; and a plurality of spherical pits are formed in the limiting disc and matched with the positioning head, so that the circumferential position of the locking sleeve is elastically locked, and then the positions of the steel balls are kept.