284results about How to "Prevent loosening and falling off" patented technology

The invention provides an automobile gear end surface polishing device, and relates to the technical field of automobile gear polishing. The automobile gear end surface polishing device comprises a working table, standing columns are fixedly installed on both sides of the top of the working table, and motor mounting blocks are fixedly installed on both sides of the inner wall of each standing column. According to the automobile gear end surface polishing device, through arrangement of telescopic motors, threaded rods, telescopic blocks, sliding rods, a strip-shaped sliding groove and a cross plate, a polishing device body on the bottom of the cross plate can vertically move between the two standing columns under driving of the telescopic motors; through arrangement of the cross plate, the sliding groove and supports, the polishing device body on the bottom of the cross plate can transversely move on the bottom of the cross plate; through arrangement of a polishing table, a rotating rod and a clamping base, a gear to be polished which is fixed to the top of the clamping base in a clamped mode can conduct circular motion on the bottom of a polishing motor under driving of the rotating rod. In sum, by means of the automobile gear end surface polishing device, the effect that adjustment is convenient is achieved, it is convenient for people to polish the end surface of the gear from different angles, and the quality of the gear after polished is better.

The invention provides a structure for manually adjusting direction of a lamp head. The structure comprises the lamp head, a support hinged to the lamp head, a rotating disc and a fixed disc, the support is mounted on the rotating disc which is rotatably arranged on the fixed disc, a positioning component is arranged on the outer side of the rotating disc and comprises a supporting seat and inserting pins penetratingly arranged on the supporting seat, positioning holes used for arranging the inserting pins in an inserted manner are uniformly arranged on the circumference of the fixed disc, an arc-shaped guide hole is arranged in the support, and a fastening member is arranged at a position, opposite to the guide hole, on the lamp head, penetrates the guide hole and locks a butterfly-shaped nut. The structure is simple, stable and reliable, and horizontal lighting direction and pitching angle of the lamp head can be adjusted manually without the help of any tools. The invention further provides a lamp which comprises a base box. The lamp is provided with the structure, and the fixed disc is mounted on the base box. The horizontal lighting direction and the pitching angle of the lamp head of the lamp can be conveniently adjusted without the help of any tools.

The invention discloses an inherent frequency measuring device for 600 DEG C high-temperature thermal vibration coupling test of a high-speed cruise missile airfoil surface. The device comprises a missile airfoil surface structure test piece, a quartz lamp heating array, a vibration exciter, a ceramic extension rod, an acceleration transducer, a computer and a heat insulation baffle plate. In the high-temperature thermal vibration coupling test of the cruise missile airfoil surface, the missile airfoil surface is quickly heated by using the quartz lamp heating array and generates random vibration through the vibration exciter at the same time to form a 600 DEG C high-temperature thermal vibration coupling test environment. The rigid ceramic extension rod with high rigidity and high temperature resistance is arranged on the missile airfoil surface to guide the vibration signals on the missile airfoil surface out of the high-temperature thermal field, and the high-temperature resistant lightweight ceramic fiber heat insulation baffle plate is used for implementing thermal diffusion prevention shielding for the radiation thermal field. The normal temperature acceleration transducer arranged at the cold end of the ceramic extension rod dynamically tracks and measures the vibration signals guided to the missile airfoil structure of the normal temperature zone to acquire the change rule of the inherent frequency of the missile airfoil surface under the high-temperature thermal vibration coupling test environment; and the device provides an effective dynamic high-temperature thermal vibration coupling test means for researching and manufacturing high-speed cruise missiles.

The invention discloses a recyclable micro-seismic sensor drilling rapid installation device and method. The device comprises a water-soluble coupling agent flexible paste, a tamping block body, a sensor clamping sleeve, a reused pushing pipe, a hole protecting sleeve and a water filling rubber pipe. The inner wall of a drilled hole is protected through the hole protecting sleeve; the tamping block body is pushed through the reused pushing pipe to compact the water-soluble coupling agent flexible paste at the bottom of the drilled hole to form a water-soluble coupling agent base; the sensor clamping sleeve on which a micro-seismic sensor is placed is pushed into the water-soluble coupling agent base before solidification through the reused pushing pipe; the water filling rubber pipe communicates through the reused pushing pipe to inject water into the solidified water-soluble coupling agent base under pressure, and the sensor clamping sleeve provided with the micro-seismic sensor is pulled out of the dissolved water-soluble coupling agent base through the reused pushing pipe. The device is simple in structure, low in cost and easy to produce; and a water-soluble coupling agent material is creatively adopted, so that the complexity of a recyclable sensor mounting device (machine) is greatly reduced.

The invention discloses a machining method of a worm gear type pivoting support and belongs to the technical field of pivoting support machining. The machining method of an outer ring of the worm gear type pivoting support comprises the steps of rough turning, half finish turning, heat treatment, finish turning, hobbing, scribing, drilling and lathe grinding. The machining method of a middle ring of the worm gear type pivoting support comprises the steps of rough turning, boring and drilling, half finish turning, heat treatment, finish turning, scribing, drilling and lathe grinding. The machining method of an inner ring of the worm gear type pivoting support comprises the steps of rough turning, half finish turning, finish turning I, gear shaping, heat treatment, finish turning II, scribing, drilling and lathe grinding. The pivoting support machined through the machining method can meet the requirements of entertainment machinery, light industry machinery, filling machinery and the like for bidirectional rotational motion and bear large turning torque, the abrasion resistance of gear teeth is remarkably improved, installation between a sealing ring and the pivoting support is firmer, the sealing ring and the pivoting support are not prone to falling off, and the service life of the worm gear type pivoting support is greatly prolonged.

The invention discloses a limb surgical apparatus with the exsanguination and hemostasis functions. The limb surgical apparatus comprises an elastic retraction ring. The outer surface of the elastic retraction ring is composed of an inner ring face, an outer ring face and two side faces, wherein the inner ring face and the outer ring face are coaxially arranged, and the inner ring face and the outer ring face are spliced into an annular whole by the two side faces. The width of the inner ring face is no smaller than 2cm, the smallest flexible diameter of the inner ring face is 2.5-10cm, the largest flexible diameter of the inner ring face is 5-15cm, and the smallest flexible diameter is smaller than the largest flexible diameter. The limb surgical apparatus can achieve the two functions of exsanguination and hemostasis at the same time by means of elastic force of the elastic retraction ring and is simple in overall structure, low in cost, capable of being used safely in a disposable mode, sanitary and easy to use and operate, professional requirements for a user are not high, and thus the limn surgical apparatus is convenient to use.

The invention discloses an anti-drop cable connecting mechanism, and belongs to the related technical field of cables. According to the technical scheme, a connecting threaded sleeve is fixedly installed on the left side of the surface of a cable, an equipment connector is in threaded connection with the interior of the connecting threaded sleeve, a transmission sleeve is in threaded connection with the surface of the connecting threaded sleeve, T-shaped plates are fixedly connected to the two sides of the transmission sleeve, and the surfaces of the T-shaped plates are sleeved with connectingsleeves. The transmission sleeve drives the connecting sleeves to move through the T-shaped plates, then the connecting sleeves limit the connecting threaded sleeve through a fixing mechanism, and finally a clamping plate and the transmission sleeve are limited through a limiting mechanism, so that the beneficial effect that the threaded sleeve can be prevented from loosening and falling off is achieved, the problem of unstable signal transmission caused by the fact that screws and nuts are mostly adopted for connection between an existing cable and equipment, and the screws are prone to loosening and even rotating and falling off after long-time use through manual screwing is solved, and use is convenient.

The invention discloses an oral implantation method for improving a jaw bearing mode and a screw implant. A spring-shaped screw with internal and external threads is made of pure titanium or titanium alloy with a diamond section; and the screw consists of a cortical bone section with fine threads and a cancellous bone section with coarse threads, and is arranged in a jaw spare hole in a compressed state, so that prestretching stress is formed in a bone tissue. A matrix is a cylindrical external thread main body, and is separated into a gum penetration section, a fine thread section, a coarse thread section and a guide section from top to bottom, and the center of the matrix is a composite cavity; external threads of the fine thread section and the coarse thread section are matched with internal threads of the cortical bone section and the cancellous bone section to form threaded connection; and the guide section is a one-third segment, and the bottom of the guide section is provided with a crossed groove. By the invention, the conventional integrated implant is optimized into a composite implant that the screw and the matrix are matched, the invention has the advantages of reliable connection and low possibility of loosening, the stress level of the alveolar ridge crest can be reduced, chewing impact can be relieved, and jaw damage and absorption can be effectively prevented.

The invention discloses a safety locking device and method for an explosive mixed loading vehicle, and belongs to the technical field of safety locking. The safety locking device comprises a lock shell and a spring bolt arranged in the lock shell, wherein one side of the spring bolt is provided with strip teeth; a driving cavity and a fixing seat are arranged outside the lock shell; a motor is arranged in the driving cavity; the output end of the motor is provided with a rotating shaft; a first bevel gear is arranged at one end of the rotating shaft; a second bevel gear matched with the firstbevel gear is arranged outside the first bevel gear; a rotating rod is arranged inside the second bevel gear, a circular gear matched with the strip teeth is arranged outside the rotating rod; an airbag is arranged on one side of the lock shell; an air pump is arranged in the fixing seat, one end of the air pump is connected with a connecting pipe; and the other end of the connecting pipe communicates with the air bag. According to the safety locking device and method for the explosive mixed loading vehicle, a side screw device is convenient to take and place, so that labor is saved, automatic locking of the side screw device is achieved, locking force is improved, and the problem that the side screw device loosens and falls off when the explosive mixed loading vehicle moves is solved.

The invention discloses an IoT-based anti-interference electronic communication device comprising a casing, a positioner, a signal receiver and an anti-interference device, wherein the casing is provided therein with a processor; a heat dissipation fan is installed above the processor; a mounting plate is mounted above the positioned; the top of the casing is provided with a through hole; a fixingring is mounted on the upper end of the casing; a signal transmitter is mounted on the upper end of the mounting plate; and a stabilized voltage supply is disposed under the anti-interference device;a binding post is disposed outside the casing; a control panel is disposed above the binding post; and the casing is provided with an access door. The IoT-based anti-interference electronic communication device has the advantages of 1, convenient use, flexible operation, stable power supply, convenient detection and maintenance, and good practicability; 2, reinforcing the signal transmitter and the signal receiver to prevent loosening and falling off; 3, being resistant to interference, dissipating heat inside the device and extending the service life of the device.

The invention discloses a bolt assembly suitable for motor installation. The bolt assembly comprises a threaded rod, wherein a screw cap is arranged at one end of the threaded rod, and a threaded section is arranged at the other end of the threaded rod. The antitheft bolt further comprises a nut matched with the threaded section. A plurality of evenly-distributed through holes are formed in the threaded section. A limiting hole coaxial with the through holes is formed in the nut. The portion, between the nut and the screw cap, of the threaded rod is sleeved with an elastic metal washer. The through holes are formed in the threaded section, the limiting hole is formed in the nut matched with the threaded rod, fixation of the threaded rod and the nut can be completed through a pin after the nut is connected to the threaded rod in a screwed manner, it is avoided that the nut rotates or axially moves, and loosening or falling of the nut is prevented; and the elastic metal washer is connected between the screw cap and the nut in a sleeving manner, the effects of adjusting the position of the nut and absorbing part of vibration can be achieved through the elastic metal washer, and stability is further improved.

The invention discloses a coarse-fine milling cutter capable of discharging scraps quickly. The coarse-fine milling cutter comprises a cutter handle and a cutter head connected with one end of the cutter handle, the cutter head is provided with spiral cutting edges, the cutting edges comprise coarse cutting edges and fine cutting edges, a scrap discharging groove is formed between two adjacent cutting edges, a strip-shaped protrusion is arranged at the bottom of each of the scrap discharging grooves and extends from the front section of the corresponding scrap discharging groove to the rear end of the corresponding scrap discharging groove, and an annular clamping groove is formed in the cutter handle. The strip-shaped protrusions can perform the function of dredging scraps so that the scrap discharging grooves of the cutter head cannot be blocked by the scraps, and the drilling speed is improved; meanwhile, the cutter head is coated with a chromium nitride coating which can effectively reduce abrasion of the cutter head, and accordingly the service life of the milling cutter is prolonged.

The invention discloses an external fixing and locking nail plate system for treating femoral intertrochanteric fracture. The system comprises a thighbone locking plate, wherein a shape similar to the shape of the skin on the outer side of the hip of a human body is formed on the inner surface of the thighbone locking plate; an upper main locking hole, a lower main locking hole, an upper sub locking hole, a lower sub locking hole, an upper main locking screw, a lower main locking screw, an upper sub locking screw, a lower sub locking screw and a lower locking screw are formed on the thighbone locking plate; the upper main locking hole, the lower main locking hole, the upper sub locking hole and the lower sub locking hole are provided with internal screw threads and countersunk heads; the upper main locking screw, the lower main locking screw, the upper sub locking screw, the lower sub locking screw and the lower locking screw are provided with first threaded parts, second threaded parts and smooth screw rods; and the second threaded parts of the upper main locking screw, the lower main locking screw, the upper sub locking screw and the lower sub locking screw are coarse threads. The system is arranged on the outer side of the human body and is good in fixing effect. After surgery, a patient can conveniently wear trousers, nursing is convenient to perform, the operation wound is small, the surgery cost is low, and the system can be taken out through outpatient service after the fracture is healed and is particularly suitable for patients with poor cardio-pulmonary function.

The invention discloses a distribution box preventing electrical fire. The distribution box comprises a distribution box shell; the distribution box shell is of a reticulate structure; a ground wire is arranged on the distribution box shell; a first partition plate and a second partition plate are arranged in the distribution box shell; a circuit mounting plate is arranged between the first partition plate and the second partition plate; N mounting holes are formed in the circuit mounting plate; springs are arranged in the mounting holes; one end of each spring is connected with the inner wall of the corresponding mounting hole; the other ends of the springs are connected with fixed pieces; cooling water is contained in the first partition plate and the second partition plate; the surface of the first partition plate and the surface of the second partition plate are each provided with a heat dissipation silica gel layer; M fans are arranged on the inner wall of the distribution box shell; N joint fixing structures are arranged in the distribution box shell; the technical effects that joints in the distribution box are steadily fixed, circuits are arranged in order, the internal temperature of the distribution box is proper, the distribution box is good in ventilation and heat dissipation effects, and the electrical fire is not prone to happening are achieved.

The invention discloses rubber for sealing metal and a preparation method thereof. The rubber is prepared from the following raw materials in parts by weight: 100 parts of hydrogenated butadiene-acrylonitrile rubber, 10-30 parts of epoxy resin, 5-10 parts of liquid polysulfide rubber, 15-30 parts of white carbon black, 4-8 parts of zinc oxide, 5-10 parts of a vulcanizing agent, 30-45 parts of a curing agent, 1-10 parts of softener and 10-15 parts of a coupling agent. The method comprises the following steps: (1) premixing; (2) mixing; and (3) vulcanizing.The rubber prepared by the method can be used for effectively adsorbing metal when being applied to a metal device, preventing the metal device from loosening or falling and ensuring the sealing property, is convenient to take and replace,and forms a magnet-like effect with metal.

The invention provides a packaging device, a preparation method thereof and electronic equipment, relates to the technical field of electronics, and is used for solving the problems that the area of the packaging device is increased and the lightness of the electronic equipment is not facilitated due to the fact that pins of the packaging device are located on the side surface. The packaging device includes a circuit board, a first plastic package layer and at least one first pin, wherein the circuit board is provided with a first surface; the first plastic package layer covers the first surface, the first plastic package layer comprises at least one first channel, the first channel penetrates through the first plastic package layer in a first direction, and the first direction is perpendicular to the first surface; and the at least one first pin is electrically connected with the circuit board, one first pin is located in one first channel, at least part of the first pin is connectedwith the inner wall of the first channel, the first channel is exposed out of the first conductive surface, which is away from the circuit board, of the first pin, and the first pin is electrically connected with an external device through the first conductive surface.

The invention discloses an integrated brush and its injection mold. The integrated brush includes a brush handle and brush filaments. The brush handle is molded by injection molding, and is integrally formed with the brush filaments through injection molding. The integrated brush The injection mold of the injection mold comprises a fixed mold and a movable mold, the fixed mold is installed on the bottom of the fixed template, the movable mold is installed on the upper part of the movable template, guide columns are arranged on the top surface of the movable template, and the movable template The bottom of the bottom is connected with a support column and a base in turn, and a push shaft is sleeved in the base, and the top of the push shaft has a push plate, a push rod and a push rod guide rod in turn. The invention integrates the brush handle covered with the brush wire through the injection molding process, the bonding is firm and reliable, the material can be directly remelted and utilized, the waste of resources and equipment cost investment are reduced, the product specifications are relatively uniform, and the production efficiency is high.

The invention discloses bidirectional pulling safety tongs convenient to use. The bidirectional pulling safety tongs comprise an upper supporting plate, upper brake wedge blocks, an upper wear resisting block, a safety tong body and a brake mechanism arranged on the lower side of the safety tong body. A rolling mechanism is arranged on the upper side of the upper brake wedge block and comprises aU-shaped block, a bearing, a groove, a connecting rod rotary shaft, a fixed protrusion and a clamping groove. The upper supporting plate is mounted and fixed on the upper side of the safety tong body,and the upper brake wedge blocks are symmetrically mounted and placed in the upper supporting plate. The connecting rod rotary shaft rotates in the bearing, friction force on the joint of the connecting rod rotary shaft and a brake rod is reduced, the surface of the connecting rod rotary shaft is prevented from being abraded and damaged, the service life of the connecting rod rotary shaft is prolonged, and the demounting and overhauling period of the connecting rod rotary shaft is prolonged. The bearing is clamped and fixed into a groove through the fixed protrusion and the clamping groove, the bearing can be mounted and fixed into the U-shaped block conveniently, and later demounting and replacing of the bearing are convenient.

A dehumidifier consists of a chassis for forming bottom, top and two side panel for forming cabinet, panel for forming front surface, an air filter sets at back panel of cabinet, a blower sets at internal of cabinet,a heat exchanger formed by evaporator and condenser, compressor, condensed water tray, baffle, water groove, airflow guide hole set between said blower and said heat exchanger for guiding airflow and motor support orifice plate being formed in integral way at internal of airflow guide hole.

The invention relates to a granule spray-seeding construction method. The method comprises the following steps that S1, a slope surface is cleaned, wherein the slope surface of a slope is cleaned andtrimmed; S2, a wire mesh is laid, wherein the wire mesh is laid on the trimmed slope surface from top to bottom; S3, the wire mesh is anchored, wherein the wire mesh is fixed to the slope surface through anchoring parts; S4, granule spray-seeding is conducted, wherein a matrix layer is sprayed to the slope surface; S5, maintenance management is conducted, wherein maintenance management starts after spray-seeding, and a plant layer is formed after plant seeds germinate and grow. At least one anchoring part is a reinforcement type anchoring part which comprises a screw rod perpendicular to the slope surface, a nut sleeving the upper portion of the screw rod and a clamping plate, wherein the lower portion of the screw rod is fixed into the slope, the clamping plate comprises a base and a through hole running through the middle of the base, and the through hole sleeves the middle of the screw rod. The wire mesh is fixed between the nuts and the clamping plates, and the lower end faces of the clamping plates are attached to the slope surface.

The invention discloses a meter support assembly for a motorcycle. The meter support assembly for the motorcycle comprises a meter support (1) and a meter assembly (6); the meter support (1) has an H-shaped platy structure and consists of a horizontal section (1a) and longitudinal sections (1b) which are in bilateral symmetry with each other; the upper ends of the longitudinal sections (1b) are provided with first bolt through holes (2); a second bolt through hole (3) is formed in the middle of the horizontal section (1a); rubber mats (9) are fixedly embedded into the first bolt through holes (2) and the second bolt through hole (3); and a bolt fixed on the back of the meter assembly (6) penetrates through the rubber mats (9) and is locked by a first nut (7). By changing the model of the meter support and arranging the rubber mats between the bolt on the back of the meter assembly and the meter support, the condition that the meter assembly is loosened to fall off the meter support due to vibration can be effectively avoided, noise is reduced and the service life of the meter assembly is prolonged; and the meter support assembly has the characteristics of ingenious conception, simple structure, simplicity in improvement, low improvement cost and the like.

The invention discloses an insulating rod type wire clipper and a using method thereof. The wire clipper comprises a wire clipper fitting and an insulating torsion crank rod, wherein the wire clipperfitting comprises a quick plugging connector, an upper jaw transmission part, a lower jaw transmission part, a transmission bolt and an anti-drop nut, the insulating torsion crank rod comprises a quick plugging interface, a first fixed outer rod, a second fixed outer rod, a transmission inner rod, a crank connecting seat and a crank, the quick plugging interface is fixed at the top of the first fixed outer rod, the quick plugging interface is used for being in quick plugging fit with a quick plugging connector of the wire clipper fitting, the bottom of the first fixed outer rod is connected with the second fixed outer rod through the crank connecting seat, the transmission inner rod is assembled in the first fixed outer rod, an upper end is used for being in transmission connection with the quick plugging connector of the wire clipper fitting, a lower end is in transmission connection with the crank connecting seat, and the crank is plugged into one side of the crank connecting seat. The wire clipper is advantaged in that the wire clipper is simple in structure, convenient to operate, stable and reliable in transmission force, time-saving, labor-saving, low in working strength, reliable in connection, safe to use, high in working efficiency and the like.

The invention discloses a welding fixture for titanium, zirconium and titanium zirconium alloy electrode blocks. The welding fixture comprises an upper supporting plate and a lower supporting plate, wherein two clamping beams are arranged between the two supporting plates; fixed propping screw sleeves are arranged on the upper supporting plate and the lower supporting plate; fixed propping screws are arranged inside the fixed propping screw sleeves; fixed propping locating plates are arranged at the inner ends of the fixed propping screws; the fixed propping locating plates are connected with fixed propping baffle plates; and movable propping devices are arranged on the clamping beams. According to the welding fixture, fixed propping devices at the two ends are matched with the movable propping devices, so that electrode combinations with different lengths can be axially pressed and clamped conveniently, the axial tightness among the electrode blocks during welding is guaranteed, the seam is narrowed, the welding quality of the electrode blocks is improved, the centering property during radial electrode block pressing is achieved, the electrode blocks are effectively prevented from getting loose and falling off during rotary welding, the axial stress uniformity of the clamping beams is guaranteed, and the welding fixture has the characteristics of compact structure, wide application range, small volume, low cost and high reliability.

The invention discloses insertion type exterior wall insulation integrated plates. Each insertion type exterior wall insulation integrated plate comprises an exterior wall decorative plate body and an insulating layer, and the exterior wall decorative plate bodies and the insulating layers are all square plates and are consistent in dimension in the length direction and the dimension in the width direction; after being staggered by 30mm in the length direction, each exterior wall decorative plate body and the corresponding insulating layer are fixedly connected together through bonding with silicone weather-proof glue, so that the exterior wall insulation integrated plates are formed, wherein each exterior wall decorative plate body and the corresponding insulating layer extend out of the two ends, in the length direction, of the corresponding exterior wall insulation integrated plate; the exterior wall insulation integrated plates are spliced by inserting the insulating layer extending out of one plate into the inner side of the corresponding exterior wall decorative plate body of another plate, a gap is reserved between every two adjacent exterior wall decorative plate bodies, the gap between every two adjacent exterior wall decorative plate bodies is sealed with polyethylene rubber rods, and every two adjacent exterior wall decorative plate bodies are bonded and fixed together through silicone weather-proof glue. By means of the insertion type exterior wall insulation integrated plates, rainwater and other substances can be prevented from entering the gaps among the insulating layers, and the thermal insulation effect of an exterior wall is improved at the same time.

The invention discloses a worm wheel type slewing bearing capable of achieving opposite rotational motion of internal and external teeth, and belongs to the technical field of slewing bearings. The worm wheel type slewing bearing capable of achieving opposite rotational motion of internal and external teeth comprises an outer ring, a middle ring and an inner ring. A roller way between the outer ring and the middle ring and a roller way between the inner ring and the middle ring are both provided with steel balls and isolation blocks. The outer ring gear teeth are machined on the outer ring. The inner ring gear teeth are machined on the inner ring. The outer ring gear teeth are in a worm wheel type, and the inner ring gear teeth are in a dual-diameter-pitch mode. Hyperbola sealing grooves are correspondingly machined in the combination face between the outer ring and the middle ring and the combination face between the middle ring and the inner ring respectively. A dual-lip sealing ring is installed inside each sealing groove. The slewing bearing can meet the requirement of the industries of entertainment machines, light industry machines, filling machines and the like for two-way rotational motion, and can bear the large turnover torque, the abrasion resistance of the gear teeth is remarkably improved, the installation between the sealing ring and the slewing bearing is firmer, the slewing bearing is not likely to fall down, and the service life of the slewing bearing is greatly prolonged.

The invention discloses a dustproof fiber optic transceiver connection interface comprising a fiber optic transceiver body, a capacitor and a positioning slot. A USB output end is fixedly installed inone end of the fiber optic transceiver body; the capacitor is arranged in a connector body, and a signal connection port is installed at the other end of the connector body; a limiting push block isarranged at the middle position of the outer side of the connector body; the positioning slot is formed in the side edge of a sliding chute on the connector body, and an elastic extrusion gasbag and an elastic telescopic gasbag are separately arranged in the sliding chute and the positioning slot; a lifting plate is fixedly installed at the bottom of a seal strip; an extrusion bump is arranged onthe side edge of the signal connection port in the other end of the connector body; and the bottom of the extrusion bump is penetrated through the connector body to be arranged in an outer seal ring.By using the dustproof fiber optic transceiver connection interface, the end part of the data line can be conveniently fixed after connection, the connection of the data line can be prevented from being loosened and dropped, the gaps at the joint also can be isolated and protected, and the external dust can be prevented from entering.

The invention discloses a single-mold multi-cavity automobile accessory casting mold. The single-mold multi-cavity automobile accessory casting mold comprises a lower mold, an upper mold, a pouring pipeline and a main runner, a mounting groove is reserved in the lower mold, a cavity box is arranged on the inner side of the mounting groove, the cavity box is connected with the lower mold through the mounting groove, diversion channels are reserved in the cavity box and the lower mold correspondingly, a limiting plate is located on the inner side of a containing groove, the limiting plate is connected with the lower mold through the containing groove, the outer side of the limiting plate is provided with a connecting tooth block, the outer side of the limiting plate is provided with a driving gear, the limiting plate is connected with the driving gear through the connecting tooth block, the lower end of the pouring pipeline is connected with the main runner, and the main runner is connected with the diversion channels. The mold disclosed by the invention has the advantages that the purpose of replacing the cavity in the mold can be realized by replacing the cavity box, so that the purpose of producing different parts can be realized, the utilization rate of the mold is avoided; and meanwhile, the waste of the mold material can be avoided.