187results about How to "Reduce mechanical friction" patented technology

A variable force solenoid is described, wherein the solenoid has a relatively long stroke and a relatively low profile. The solenoid includes an armature with at least one tapered surface and a pole piece with at least one tapered surface. The armature and the pole piece may each be provided with multiple tapers on more than one surface thereof.

The invention provides a displacement amplifying type 2D electro-hydraulic proportional directional valve. The displacement amplifying type 2D electro-hydraulic proportional directional valve is that the right end of the 2D valve is fixedly connected with a bidirectional electric-mechanical conversion device through a roller type pressing torsion coupling and a pin; a wedge-shaped part is in contact with a central shaft through a roller; a right sensitive cavity is formed between a right circular bead at the end part a valve element, an end cover of the pressing torsion coupling and a valve body; a left sensitive cavity is formed between a left circular bead at the end part of the valve element, a left piston ring and the valve body; high pressure holes are formed in the circular beads at the end parts and are communicated with a P opening through inner holes of the valve element; low pressure holes are formed in the end part of the valve element and directly communicated with the T opening; sensitive channels of which the diameter is in a form of a semicircular section are formed in the upper two ends of the inner hole wall of the valve body; the sensitive channels are respectively communicated with the left sensitive cavity and the right sensitive cavity; the high and low pressure holes in the circular beads in two ends of the valve element are intersected with the sensitive channels to form two micro opening areas which are connected in series to form hydraulic resistance half axles; pressure of the sensitive cavities in two ends is respectively controlled by the hydraulic resistance half axles at two ends.

The invention provides a method for the axial elastic force application connection of electrical connector contact pairs. The method adopts an elastic element to apply axial external force to a contact pair consisting of a contact piece A (1) and a contact piece B (2), so as to combine the two tightly, thereby forming the electric connection with lower conductive resistance. One end of the elastic element is in contact with an insulating base so as to turn into a relative fixed end; and the other end of the elastic element directly acts on a preset fixed end face of an electric conductor contact piece, and is a relative displacement end during axial force application. The contact pair is independently formed by the end planes of the two contact pieces with simple structure. As axial elastic connection can not be affected by shock or other external factors, the connection reliability is higher. The contact pair can be formed by a positive contact piece and a negative contact piece as well, which ensures that the radial and axial directions of the contact pair are uniform in stress and contact.

The invention relates to a mechanical arm which is used for transporting silicon chips. The invention is characterized in that the mechanical arm comprises a horizontal driving mechanism, a vertical driving mechanism, a rotationally driving mechanism and a frame which is used for installing the three driving mechanisms, wherein the horizontal driving mechanism comprises a horizontal driving motor connected with a bracket which can horizontally move along two horizontal feeding rods through a first transmission device; the vertical driving mechanism comprises a vertical driving motor which is connected to the bracket, and the vertical driving motor is connected with a lifting frame which moves along two vertical feeding rods from top to bottom through a second transmission device; and the rotationally driving mechanism comprises a rotationally driving motor which is connected to the lifting frame and is connected with a main arm through a third transmission device, the top of the main arm perforates through the top of the bracket and is connected with a paw, the upper surface of the paw is provided with a sucking disk, and a vacuum air channel which is communicated with the sucking disk is arranged in the center of the main arm and the paw. The invention has simple structure, small volume and low cost, and can be widely used for a transporting process of various silicon chips.

The invention relates to an automatic control silicon wafer detection system which comprises an operation table provided with a mechanical hand for taking and sending a silicon wafer, a silicon wafer box platform, a silicon wafer surface detection mechanism, an object stage, a lens set and a vacuumizing device, and the automatic control silicon wafer detection system also comprises a computer system used for controlling all devices. The mechanical hand comprises a three-dimensional horizontal, vertical and rotary motion mechanism which finishes the linear movement which forms certain angle with the horizontal movement direction at certain altitude. The silicon wafer box platform comprises a crank link mechanism. A connecting bar supports a pitching swing turnover plate. A silicon wafer box is arranged on the turnover plate. The silicon wafer surface detection mechanism is provided with a vacuum chuck which can process horizontal revolution, pitching swing and autorotation. The silicon wafer is arranged on the chuck. The object stage comprises a lower layer guideway set which drives an upper layer guideway set and the object stage for coarse positioning, the upper layer guideway set drives the object stage for precise positioning, and the lens set is arranged above the object stage. The automatic control silicon wafer detection system takes, sends and observes the silicon wafer fast and conveniently, and each device can be used in a combination way and can also be used separately.

The invention relates to a device for controlling the open and close of lifter door, especially a lifter door switch controller with non-gear speed reducer, wherein the controller via the rotor position signal output by the increment coder or other position sensor uses the spatial voltage vector impulse modulation (SVPWM) frequency-variable speed adjustment, to control the magnetic-permanent synchronous motor, to generate stable electromagnetic torque, to flexibly and smoothly adjust the size and direction of motor speed in large range; and said controller uses the position signal to find the position and speed of lifter door, to switch the lifter door, via preset smooth speed curvature. The inventive driver has high efficiency, low cost, and non-gear speed reducer.

The invention relates to a linkage clutch of a washing machine. The linkage clutch comprises a drive shaft and a drive shaft sleeve, wherein the drive shaft is rotatablely arranged in the drive shaft sleeve, a drive fluted disc is fixedly connected to the drive shaft, a driven fluted disc is fixedly connected to the drive shaft sleeve, a planetary gear which is synchronously meshed with the two fluted discs is arranged between the drive fluted disc and the driven fluted disc, the planetary gear is arranged on a planetary wheel cage with external teeth, a clutch gear ring is sleeved outside the planetary wheel cage and meshed with the planetary wheel cage and can slide up and down, insertion teeth are arranged at the lower end of the clutch gear ring, slots matched with the insertion teeth are arranged on the drive fluted disc, an electromagnetic coil is arranged above the clutch gear ring, a spring is arranged between the clutch gear ring and the electromagnetic coil, and the lower part of the drive shaft is connected with a drive member. In the linkage clutch of the washing machine, a plane bevel planetary wheel transmission mechanism and an electromagnetic clutch mechanism are adopted, the insertion teeth for inserting connection and the planetary wheel cage are adopted to serve as an internal gear mechanism of the clutch, and the advantages of compact structure, small volume, high transmission intensity, accuracy for control, skillful and reasonable structure design and strong practicability are achieved.

A first camshaft (24) operates the exhaust valves (18) and a first intake valve (12) for each cylinder (8), and a second camshaft (38) operates the second intake valve per cylinder (14), the second camshaft further having a phase adjuster (62) for adjusting the timing of the second camshaft (38) relative to the first camshaft (24). Both the exhaust valves and the first intake valve are actuated by rocker arms (30), (36), for providing a short and light-weight first intake valve rocker (36) having a high maximum operational speed capability and low friction. The first camshaft (24) is located above the rockers, the cam followers are located generally in the middle of the rockers (30), (36), and the rocker mounts (33), (35) are located on the inboard ends of the rockers, providing rockers that have both light-weight and a small pivot angle for providing low valve stem to rocker friction.

The present invention provides transdermal drug delivery devices (i.e., patches) comprising O-desmethylvenlafaxine (ODV), a selective serotonin and norepinephrine re-uptake inhibitor, or a pharmaceutically acceptable salt thereof, which, among other, offer the advantage of eliminating or reducing the adverse side effects associated with the oral administration of ODV. Also provided are methods of preparing and using these transdermal delivery systems for the treatment of depression, anxiety disorders, vasomotor symptoms and pain.

A variable force solenoid is described, wherein the solenoid has a relatively long stroke and a relatively low profile. The solenoid includes an armature with at least one tapered surface and a pole piece with at least one tapered surface. The armature and the pole piece may each be provided with multiple tapers on more than one surface thereof.

The invention discloses a vertical axis propeller eccentric circle control mechanism. The vertical axis propeller eccentric circle control mechanism is characterized in that a vertical axis propeller rotating shaft is installed in the center of a base; a chassis, an upper end plate and a lower end plate are sleeved respectively with the vertical axis propeller rotating shaft; the upper end plate is connected with the base; the low end plate is connected with the chassis; the upper end plate and the lower end plate are connected through a first connection plate and a second connection plate to form a second revolute joint composed of a part of the upper end plate and a part of the first connection plate, a third revolute joint composed of a part of the lower end plate and a part of the first connection plate, a fourth revolute joint composed of a part of the lower end plate and a part of the second connection plate, and a fifth revolute joint composed of a part of the upper end plate and a part of the second connection plate; and the upper end plate, the lower end plate, the first connection plate, the second connection plate, the second revolute joint, the third revolute joint, the forth revolute joint and the fifth revolute joint compose a parallelogram mechanism. The vertical axis propeller eccentric circle control mechanism can control the position of the parallelogram mechanism through a control rocker arm of the upper end plate and a control rocker arm of the first connection plate to drive orderly the lower end plate and the chassis so that relative positions of the vertical axis propeller rotating shaft and the chassis are changed thus a blade pitch angle can be controlled.

This invention proposes a wireless bike brake light that can respond to braking when bikes are in motion. The invention employs a MEMS (micro electro mechanical system)-structured accelerometer chip as sensor to detect related signals. A control circuits unit processes the signals, and then sends appropriate brake light to following vehicles based. The features of the invention are that (1) It can provide extra security when serving as a brake light with independence of braking system, (2) It is easily to install and durable, (3) It can be also applied to such sports as skiing, skateboarding, etc. that are not equipped with apparent brake devices, and thus hard to incorporate brake lights.

The invention discloses a spherical electric vehicle magnetic suspension flywheel battery; an inner housing, a spherical stator, a spherical cavity rotor, two permanent magnets and two magnetic suspension spherical surface bearings are arranged in a vacuum cavity; the spherical stator is arranged in the right center of the flywheel housing; the spherical cavity rotor is arranged outside the spherical stator; the spherical cap shape inner housing having the same spherical core is arranged outside the spherical cavity rotor; the bottom opening of the inner housing is seamlessly fixedly connected with the first permanent magnet in a spherical cap shape; the inner housing and the spherical cavity rotor are fixedly connected through a rotor connector; the second permanent magnet in the spherical cap shape is arranged right below the first permanent magnet, and fixedly connected on the inner surface of the flywheel housing; the two magnetic suspension spherical surface bearings are arranged between the flywheel housing and the inner housing, fixedly connected on the inner wall of the flywheel housing, and two central shafts thereof are intersected. The spherical electric vehicle magnetic suspension flywheel battery can eliminate air friction losses on the flywheel, and can increase the gyro control moment scope, thus inhibiting the flywheel gyroscopic effect.

The invention relates to a wide-working-condition annual refrigeration type evaporative cooling magnetic suspension refrigerating unit and a control method. The wide-working-condition annual refrigeration type evaporative cooling magnetic suspension refrigerating unit comprises a plurality of direct-expansion coils, the output ends of the plurality of direct-expansion coils are integrated into a pipeline through a plurality of pipelines and then connected with the inlet end of a vapor-liquid separator, an air outlet and an auxiliary air port of the vapor-liquid separator communicate with an air suction port and an air supplement port of a magnetic suspension compressor through the pipelines respectively, an exhaust port of the magnetic suspension compressor is connected with the inlet endof an evaporative cooling type condenser through the pipelines, the outlet end of the evaporative cooling type condenser is connected with the inlet end of a liquid storage tank through the pipelines,the outlet end of the liquid storage tank is connected with the inlet end of a dry filter, and the outlet end of the dry filter is connected with a liquid spraying connector of the magnetic suspension compressor and the inlet ends of the direct-expansion coils through the pipelines correspondingly. According to the wide-working-condition annual refrigeration type evaporative cooling magnetic suspension refrigerating unit and the control method, the evaporation temperature range of the unit can be adjusted within -5 DEG C to 18 DEG C, the requirement for multi-working-condition changes can bemet, the magnetic suspension compressor reduces mechanical friction of moving parts by utilizing the magnetic suspension technology, and the service life of the unit is greatly prolonged.

The invention relates to a heart assisting device, in particular to a magnetic fluid suspension type axial pump heart assisting device implanted into the human body in the field of biomedical engineering. The magnetic fluid suspension type axial pump heart assisting device is characterized in that a section of flow channel is divided into an inner flow channel and an outer flow channel by an outer ring wrapping the middle section of an impeller blade, and spiral tooth ripples are engraved on the outer wall of the ring; the top wall of the tooth ripples is in an oblique shape, so that an inflowing opening of the outer flow channel is large, and an outflowing opening is small, and an impeller is subjected to hydraulic pressure when rotating to be radially suspended; an opening is formed in the side wall of the tooth ripples; a pair of convex-concave magnetic cones are embedded in the back end of an impeller hub and a back guide blade hub, and are in the axial magnetic direction, and unlike poles attract each other; a backward pull force generated on the impeller resists the blood forward push force borne by rotating the impeller, and a stator iron core has a binding force, so that the impeller is axially suspended, and thus the impeller is fully suspended; the impeller and front and back guide blade hubs are respectively embedded with two pairs of sliding bearings, which protect the magnetic cones, blades, and the inner wall of a pump pipe, and position and help the impeller suspension.

The invention discloses a proportional controllable braking energy recycling device. The device comprises a position control mechanism composed of an oil guide pipe, a plunger cylinder, a pin, a bearing seat, a bearing and a reset spring, an energy change motor composed of a transmission shaft, a long bond, a rotor, a rotor magnetic pole, a stator and a stator coil and an energy recycling circuit composed of a braking switch used for electric energy recycling, a conditioning circuit, a snubber capacitor and a storage battery; the plunger cylinder pushes the rotor to slide in the axial direction to change the induced electromotive force in the stator coil, and then the braking torque on a wheel axle is controllable; the conditioning circuit and the snubber capacitor recycle and store converted electric energy and charge the storage battery. According to the proportional controllable braking energy recycling device, the braking energy is recycled through the energy change motor and the conditioning motor, therefore, mechanical friction is reduced, and the energy recycling rate is increased; the braking torque is controlled by adjusting the position of the rotor, and the braking stability is improved.

The invention discloses an environment-friendly cable insulation layer, and belongs to the field of wire cable. The environment-friendly cable insulation layer comprises an internal insulation layer and an external insulation layer; a double layer co-extrusion insulation layer is composed of the internal insulation layer and the external insulation layer; the internal insulation layer is preparedfrom an irradiation crosslinked polyethylene insulation material; the external insulation layer is prepared from a low-smoke halogen-free flame-resistant irradiation crosslinked polyolefin insulationlayer; the external insulation layer comprises, by weight, 43 to 65 parts of an ethylene-vinyl acetate copolymer, 40 to 60 parts of linear low density polyethylene, 35 to 47 parts of ethylene propylene diene monomer, 54 to 75 parts of a scratch-resistant agent, 25 to 30 parts of a sensitizing agent, 48 to 60 parts of a silicon nitrogen flame retardant, 25 to 35 parts of a composite anti-aging agent, 12 to 20 parts of a reinforcing filler, and 25 to 35 parts of a composite compatilizer. The environment-friendly cable insulation layer, is friendly to the environment, and is capable of improvingthe scratch resistance of cables greatly.

The invention relates to a ball float type liquidometer with vernier display. The ball float type liquidometer comprises a ball float chamber and a ferromagnetic spherical floating ball arranged therein, a vernier outside the ball float chamber, a calibrated scale and a vernier guide rail. The vernier comprises magnetic steel, a frame and a rolling system which is horizontally fixed and sleeved in the frame; the rolling system comprises rolling wheels which are provided with radial grooves along a circumferential surface, rolling bearings and shafts; the magnetic steel is disposed between the ball float chamber and the frame and is fixed outside one side surface close to the ball float chamber on the frame, and the magnetic pole of the magnetic steel is right oriented towards the floating ball; the vernier guide rail is sleeved in the frame and is disposed between the magnetic steel and the rolling system; and the rolling system enables the rolling wheels to roll vertically along the vernier guide rail at groove positions through a magnetic coupling force between the magnetic steel and the floating ball. The ball float type liquidometer is simple and scientific in structure, reliable in application performance, easy to manufacture and low in cost, reduces defects in the prior art and effectively meets needs in correlation fields.

The invention relates to an energy-saving compact vacuum extruder, which comprises speed reducer (1), aerated clutch (2), block coupler (3), extruding axle (19), transmission gears (5, 6, 15), mixing axles (4, 26), Haf mixing blade (8), vacuum room (11), compressing plate (12), extruding cylinder (13), head (14), extruding mold (21), upper, middle, and lower boxes (22, 23, 25), machine base (24), and material hopper (7). The invention is characterized in that: the output axle wheel (17) of power machine (18) via transmission belt (16) drives the aerated clutch belt wheel (2) at the input of speed reducer (1); the output of speed reducer via block coupler (3) rotates the extruding axle (19); the active gear (15) at the back extruding axle makes the inactive gear (5) to rotate the active mixing axle (4), and makes the gear (6) axial with active gear (15) to rotate the inactive mixing axle (26). The invention can reduce mechanical friction and save enegy.

A mechanical clock movement includes a resonator, an escapement linked to the resonator, and a display of at least one item of time information. The display is driven by a mechanical drive device via a counter wheel train, the work rate of which is set by the escapement. At least the resonator is housed in a chamber, in which a reduced pressure in relation to atmospheric pressure prevails. The escapement is a magnetic escapement including an escape wheel coupled directly or indirectly to the resonator via a non-contact magnetic coupling system, wherein the magnetic coupling system is formed so that a non-magnetic wall of the chamber runs through the magnetic escapement so that a first part of the escapement is located inside the chamber whereas a second part of the escapement is located outside the chamber.

The present disclosure relates to a cone-shaped crusher. The cone-shaped crusher includes a main shaft, a mantle core assembly which is coupled to and movable up and down the main shaft, and a crushing gap control support positioned below the mantle core assembly and fixed to the main shaft . In addition, the crushing gap control support has an annular cylindrical unit extending upward therefrom and receiving a piston unit which extends downward from the mantle core assembly so that the piston unit is movable up and down in the cylindrical unit . The whole mantle core assembly formed with the piston unit moves up and down by a pressure of hydraulic oil flowing in and out of an internal space of the cylindrical unit.

The vertical 3D fabric knitting machine includes one solid-liquid two phase under pan comprising one liquid phase layer and one solid phase layer floated on the liquid phase layer; one shuttle comprising yarn storing device, bobbin on the yarn storing device and electric heating wire outside the bobbin; one driving device comprising driving hand and driving arm; and one frame for the other parts to be set on. The solid phase layer is normally solid and may be converted into liquid state after being heated and returned to solid state after being cooled; the liquid phase layer is always in liquid phase; the bobbin and the electric heating wire penetrate the solid phase layer; the yarn storing device is located inside the liquid phase layer and connected to the driving hand via one separable interface; and the electric heating wire is connected to the power source. The said structure makes it possible for the shuttle to move in any locus in the under pan plane and is simple and low in cost.

The invention discloses a driving mechanism of shift door lock, comprising lock shell, dialing wheel accommodated in the lock shell and lock core fixed in the lock body. At the axial tail end of lock core shifting fork, which can rotate in coaxial axis, can be set and shifting fork port is also set at the side of said dialing wheel. The central axial line of said lock core is dislocation with the central axial line of said dialing wheel. The shifting fork of said lock core extends into said shifting fork port. Other mechanisms matched with the driving mechanism of shifting door lock also comprises lock tongue accommodated in the lock shell, locating shaft of lock tongue, locating plate and guiding shaft of locating plate. When lock is opened and closed, the key inserts into the lock core to rotate shifting fork and the shifting fork inserts into the shifting fork port set on the dialing wheel to drive the dialing wheel rotate in the opposite direction. The dialing wheel drives the locating plate slide along the guiding shaft of locating plate. The locating plate drives the lock tongue bounce in or out of lock shell on the locating shaft of lock tongue. The invention makes the shift door lock high safety. It can be applied in shift door lock needed in various shift doors.

Disclosed is a low drag piston for a reciprocating engine that comprises a piston head that reduces mechanical and viscous friction while improving oil lubrication and thermal load dissipation throughout the piston stroke. The piston comprises a cylindrical crown and lower skirt area such that these elements are the only surfaces in contact with the cylinder walls and support a plurality of piston rings, while the interior skirt region is recessed inward in a concave shape to reduce drag, friction and thermal expansion interferences. An additional oil control ring increases oil outflow to further reduce friction and drag, while the pin boss that holds the connection between the piston head and the connecting rods is recessed inward within the inwardly concave central portion.

An energy converting system for converting wind energy into kinetic energy has at least one energy converting mechanism that includes a fixed shaft unit including an upright fixed shaft, a windmill device, an air compartment, and a purifying device. The windmill device includes a windmill unit disposed rotatably around the fixed shaft and including at least two first blades driven by the wind energy. The air compartment is disposed above the windmill device. Rotation of the first blades of the windmill unit results in upward flow of compressed air into the air compartment to thereby allow the solar-heated air to be jetted out of the air compartment in such a manner to rotate the windmill device about the fixed shaft. The purifying device is disposed in the air compartment for filtering out impurities in air before the air flows out of the air compartment.

The invention discloses a shaftless type submersible axial flow electric pump and belongs to the technical field of water pumps. The shaftless type submersible axial flow electric pump comprises a water intake section, a submersible motor section and a flow deflector section; the lower end of the submersible motor section is connected with the water intake section through a fastening bolt; the flow deflector section is connected with the upper end of the submersible motor section and comprises a flow deflector and a flow deflecting blade; the flow deflector is a frustum shaped cylinder; the flow deflecting blade integrally cast with the frustum shaped cylinder of the flow deflector is arranged on the inner wall of the frustum shaped cylinder of the flow deflector; and the water intake section at the bottom of the pump is a bellmouth shaped cylinder. The shaftless type submersible axial flow electric pump has the following advantages: the shaftless type submersible axial flow electric pump shortens the overall size of the water pump, increases the passing area of the water flow passing through the cavity of the water pump, increases the water passing flow of the water pump, improvesthe hydraulic efficiency, lowers the noise during the operating process of the water pump, improves the passing capacity of sundries in water, and reduces the probability that a water pump impeller is wound with long fiber or other sundries. A magnetic fluid double suspension block bearing increases and improves the operating speed and operating stability of a motor rotor to improve the performance of the water pump.

A full electromagnetic suspension type magnetic control rotor system comprises variable magnetic controllers, a rotor ball, a stator magnetic coil, an inner curved surface ring stator and a rotor fusion, wherein the stator magnetic coil is fixed on the outer ring of the inner curved surface ring stator, and the outer ring of the stator magnetic coil is sleeved with the rotor fusion; the variable magnetic controllers are mounted at the top of the rotor ball, and a control system is arranged in the rotor ball and used for controlling magnetic change of the variable magnetic controllers; the rotor ball is sleeved with the inner curved surface ring stator. The system is simple and reliable on the whole, and mechanical friction among structures is effectively reduced; when a rotor rotates to produce lift force, repulsive force of a variable magnetic part can be changed, so that a rotor disc swings around the rotor ball in a controllable range, and pitching and roll control of a rotor craftis realized; the full electromagnetic suspension type magnetic control rotor system adopts simple and reliable principles and has more concise and higher efficiency as compared with a main rotor system of a helicopter.

The invention provides an electric door and window guide rail with a magnetic levitation linkage function, and belongs to the field of an electric guide rail for doors and windows. The electric door and window guide rail comprises a motion block, a fixed part, a linear motor driving device, a linkage component and pulleys, wherein the fixed part is resting relatively to a mobile part; the motion block moves in an empty slot of an outer frame guide rail in the fixed part, and the linear motor driving device is arranged on the outer side of the fixed part; the pulleys are fixedly arranged on thetwo sides of the motion block and are in clearance fit to slide in the empty slot of the fixed part; and the linkage component is connected with a driving motion block and a driven motion block of atrack, and thus one motor can drive two doors and windows for linkage moving. The electric door and window guide rail has the advantages of simple structure, easiness in maintenance and high practicality and prevents the fixed part from deforming and linking. Meanwhile, the electric door and window guide rail does not need transmission equipment during electrical moving, so that friction is small,and noise is low.

The invention relates to a spacing device of shift door lock, comprising lock shell, dialing wheel fixed in the lock shell and locating plate. The dialing arm is set at the side of dialing wheel and a fork is set at the side of locating plate. The invention also comprises three rings of special-shape spring. The head end of special-shape spring is fixed on the dialing arm and the tail end is fixed on the lock shell. The dialing arm extends into the fork to form the dialing connection. Other mechanism matched with the spacing device of shift door lock also comprises lock tongue accommodated in the lock shell and locating shaft for lock tongue. The top of lock tongue can be fixed on the locating shaft in rotation. A boss is set in the middle of lock tongue and inserts into the hole set in the locating plate to form the swinging-arm mechanism. Two long-strip sliding groove ports are set in the middle of locating plate and by two long-strip sliding groove the locating plate can be mated on the locating shaft of lock tongue and the spring guiding shaft in slide so that the locating plate slides along the track limited by said locating shaft of spring and said locating shaft of lock tongue. The invention can be applied in shift door lock needed in various shift doors.