44results about How to "Realize waterproof and dustproof" patented technology

The invention relates to a solar street lamp with dustproof and waterproof functions. The street lamp comprises a base, a lamp pot, a lamp body, a solar panel, a storage battery and a storage mechanism, wherein the lamp body is arranged on the base through the lamp post; the storage mechanism comprises a box body, a driving assembly, a driven assembly and an opening assembly; and the solar panel and the storage battery are arranged in the box body. The solar street lamp with the dustproof and waterproof functions is ingenious in design; the solar panel absorbs solar energy and converts the solar energy into electric energy to supply power to the street lamp, so lighting is realized; the solar panel is inclined by a certain angle through the opening assembly, so better power generation efficiency is realized; the solar panel is protected through the box body; the solar panel is covered with covering cloth, so rainwater is prevented from permeating into the solar panel, rain prevention is achieved, and the service life of the solar panel is prolonged; the covering cloth is folded while the solar panel is unfolded through two-way lead screws, so the lighting efficiency of the solar panel is improved; and automatic control is achieved through a PLC, and a better protection effect is achieved.

The invention discloses a surface cover of a door fingerprint lock of a manager room. The surface cover of the door fingerprint lock of the manager room comprises a lock cover body, wherein a window is formed in the outer surface of the lock cover body, and fingerprints can penetrate through the window. The surface cover of the door fingerprint lock of the manager room further comprises a gear reducer and a cover plate which is used for covering the window in an overturned mode, wherein the gear reducer comprises a box body and a gear train installed in the box body, the output end of the gear train is connected with the cover plate, a driving gear which extends out of the box body is arranged at the output end of the gear train, and is installed on an output shaft of the gear train, a blind hole is formed in the output shaft, a notch is formed in an inner hole, corresponding to the blind hole, of the driving gear, a spring is arranged in the blind hole, a clamping ball is clamped between the spring and the notch, one end of the clamping ball extends into the blind hole, and the other end of the clamping ball extends into the notch. The surface cover of the door fingerprint lock of the manager room is simple in structure, capable of preventing overload, small in size, low in cost and beneficial to installation and use.

The invention relates to an ultrathin backlit laser waterproof keyboard and a production method thereof. The laser waterproof keyboard is formed by a one-piece button, a button square support, a printed circuit film located below the one-piece button and a keyboard base plate supported below the printed circuit film. The one-piece button is formed through carrying out hard and soft glue secondary injection molding on several hard glue button surfaces and several soft-rubber concave connection bodies possessing elasticity. The button square support is one rigid panel. The rigid panel is provided with several square through holes which form one-to-one correspondence with the hard glue button surfaces. By using the above structure and the method, the keyboard possesses the following advantages that the one-piece button is not shifted because of deformation when being pressed; secondary injection molding is realized through the hard and soft glue; and dustproof and waterproof performance can be realized. Cost is low, and assembling is simple and convenient. Keyboard characters are not abraded and possess a stereoscopic impression.

The invention discloses an E-band wide beam antenna, comprising a feed source assembly, a medium filling block and a reflection surface. The feed source assembly comprises a waveguide transmission cavity and a loudspeaker feed source. The loudspeaker feed source is connected with the waveguide transmission cavity. The medium filling block is nested in a loudspeaker opening of the loudspeaker feedsource. The reflection surface receives electromagnetic waves radiated by the loudspeaker feed source, thereby carrying out reflection to transmit the electromagnetic waves externally. The loudspeakerfeed source is located at a focus position of the reflection surface. An E-band wide beam antenna device provided by the invention comprises the E-band wide beam antenna and an exposure unit which are fixed on a lifting rod through a hanger. According to the E-band wide beam antenna and the antenna device, a wide half-power angle is achieved, so shake influence can be effectively resisted; the performance is excellent; a standing-wave ratio is low; the return loss is low; the gain is high; an antenna size is relatively small and compact; a structure is reliable; a windward area is reduced; the wind resistance ability is relatively high; the weather resistance ability is excellent; the cost is low; the electrical performance can be ensured; and the antenna can be prevented from being influenced by a complex and hostile environment.

The invention discloses a PVC road cone with an alarming function. The PVC road cone comprises a base. A switch is inserted in the bottom of the base. A shell is inserted in the top of the base. An installation hole is formed in the top center position of the shell. A spring column is in sliding connection with the inner wall of the installation hole. The spring column penetrates through a fixinghole and a first insertion hole to make contact with the switch. A distance sensor is inserted in the top outer wall of the spring column. A protective shell is arranged on the outer wall of the distance sensor. Alarms and line plugs are clamped at the top of the base. Protective shells are arranged on the outer walls of the alarms. All component leads are connected with the line plugs. The inputend of the switch is connected with a miniature controller through a lead. The miniature controller is connected with a power source through a lead. By the adoption of the PVC road cone with the alarming function, in the use process, installation is simple and easy, the switch is arranged at the top of the road cone, use is convenient, the alarms automatically work to give an alarm, main exposed components are provided with the corresponding protective shells, dust and water are resisted, the safety performance is high, when the PVC road cone is not used, detachment is convenient, and the occupied area is saved.

The invention provides a novel protective board insulation packaging process and a lithium battery and aims to achieve properties of stable production, convenient assembling, high structural strengthand high space utilization. The lithium battery includes a battery core and a protective board electrically connected with the battery core, wherein the protective board includes a circuit board, multiple electronic components connected with the circuit board and a packaging casing, and the packaging casing is integrally molded on the multiple electronic components and the circuit board. The lithium battery is applied to the battery technology field.

The invention discloses an overall structure of a fingerprint recognition module and a physical key. The overall structure comprises an upper cover, a fingerprint module, a module gasket, an elastomer, a pressing block and a pcb. The overall structure is characterized in that the elastomer is arranged, the pressing side of the elastomer is arranged on the frame of the pressing block, the module gasket is arranged in the groove of the elastomer, the pressing block and the pcb fix and press the pressing side of the elastomer on the top part in the upper cover, the elastomer seals the module table and the module gasket on the top part in the upper cover and only the fingerprint acquisition mirror is exposed out of the through hole of the upper cover. The touch column of the lower bottom surface of the module gasket contacts the flexible key cap of the key switch on the pcb through the through hole of the elastomer and the through hole of the pressing block so that the combined structure of the fingerprint module and the physical key can be integrally formed, the volume in the equipment space is small, the fingerprint module component is sealed on the top part in the upper cover and thus the waterproof and dustproof performance of the fingerprint component can be realized and the service life of the fingerprint module can be enhanced.

The invention relates to the technical field of electronic devices, and discloses a wireless charging hearing aid, which comprises a shell, an inner shell arranged on the inner surface of the shell, arechargeable battery assembled on one side of the inner shell, a bracket connected with the rechargeable battery, and a control key movably connected with the bracket. According to the wireless charging hearing aid, induction current is obtained by utilizing an electromagnetic induction technology, so that a built-in battery is charged. Internal components of the shell do not need to be in contact with an external charging head, the sealing performance of the shell is better, complete waterproof and dustproof effects are achieved, and the use adaptability of the wireless charging hearing aidis improved. Due to the fact that the shape and the number of layers of the receiving coil can be flexibly designed according to requirements, and meanwhile the magnetic conductive sheet is adopted toshield the induced magnetic field, the electromagnetic induction efficiency is improved, the negative influence of the induced magnetic field on other components is avoided, all the components in theshell can be arranged at will, and the flexibility of overall appearance design is improved.

The invention discloses a method and a device for setting cryptographic key factors of dynamic tokens, wherein the method comprises the following steps: receiving cryptographic key data outputted by a first intelligent cryptographic key device by a second intelligent cryptographic key device; and generating cryptographic key factors according to the cryptographic key data. By using the method and the device provided by the invention, the sealing of a dynamic token can be achieved without arranging an opening which is used for programming cryptographic key factors on a shell of the dynamic token.

The invention discloses an electronic watch, which comprises a housing, wherein a transparent layer is fixedly arranged in the middle of the housing; the two ends of the housing are each provided withtwo fixing strips; a first watchband and a second watchband are arranged on the two sides of the housing respectively; first rotating shafts are arranged at joints of the first watchband and the twofixing strips at the corresponding positions and joints of the second watchband and the two fixing strips at the corresponding positions respectively; and a frame body is arranged on the section, awayfrom the first watchband, of the second watchband. According to the electronic watch, the first watchband is inserted into the frame body; an insertion strip on the second rotating shaft is insertedinto an insertion opening; the first watchband and the second watchband are adjusted by inserting the insertion strip into different insertion openings, such that the first watchband and the second watchband are suitable for wrists with different thicknesses, when adjustment is completed, the insertion strip is in lap joint with a notch, meanwhile, the end, away from the housing, of the first watchband is inserted into a sliding sleeve, a displayer is observed through the transparent layer, and time observation is achieved.

The invention relates to a host as well as a case and a housing thereof. The case comprises a front cover plate, a rear cover plate and the housing arranged between the front cover plate and the rear cover plate, wherein the housing comprises an upper side plate and a lower side plate which are connected with the upper end and the lower end of a corresponding power module in a heat conduction manner; a heat dissipation pipe which runs through the upper and lower side plates in a vertical direction and is sealed in a circumferential direction is formed between the upper side plate and the lower side plate; the upper end and the lower end of the heat dissipation pipe are connected with the upper side plate and the lower side plate in a heat conduction manner respectively; and the front and rear cover plates and the housing define a sealed installation space. The invention provides the case which can improve the heat dissipation effects of power modules and is waterproof and dustproof, the housing used in the case, and the host using the case.

The invention provides an interlocking device of simple constitution capable of operating a front wheel brake as well as a rear wheel brake when operating a brake pedal in a motorcycle. A joint member 20 is mounted to an intermediate part of a front brake wire 4, and a bell crank 27 is journalled to a cover 28 fastened to a head pipe 8a, in proximity to the joint member 20. A first arm 27a is connected to the brake pedal 3 through an interlocking brake wire 6, and a second arm 27b is placed facing the joint member 20 so as to abut on and separate from it. When pulling the interlocking brake wire 6 by the brake pedal 3, the bell crank 27 moves the joint member 20 in the operating direction of the front brake Bf, and when pulling the front brake wire 4 by a brake lever 2, the joint member 20 is separated from the bell crank 27.

The invention relates to an ultrathin backlit laser waterproof keyboard and a production method thereof. The laser waterproof keyboard is formed by a one-piece button, a button square support, a printed circuit film located below the one-piece button and a keyboard base plate supported below the printed circuit film. The one-piece button is formed through carrying out hard and soft glue secondary injection molding on several hard glue button surfaces and several soft-rubber concave connection bodies possessing elasticity. The button square support is one rigid panel. The rigid panel is provided with several square through holes which form one-to-one correspondence with the hard glue button surfaces. By using the above structure and the method, the keyboard possesses the following advantages that the one-piece button is not shifted because of deformation when being pressed; secondary injection molding is realized through the hard and soft glue; and dustproof and waterproof performance can be realized. Cost is low, and assembling is simple and convenient. Keyboard characters are not abraded and possess a stereoscopic impression.

The invention provides a multi-item bearing seal rotary shaft system used for a laser radar scanning rotating mirror. The rotary shaft system comprises a base, the base is provided with shaft holes, the laser radar scanning rotating mirror rotary shaft and a drive rotary shaft are installed in the shaft holes, and the rotary shaft system further comprises a crossed pin roller shaft ring installed between the base and the laser radar scanning rotating mirror rotary shaft and the drive shaft. An outer bearing pressing ring is pressed on the crossed pin roller shaft ring. A radial fiber reinforcement oil seal is arranged between the outer bearing pressing ring and the laser radar scanning rotating mirror rotary shaft to achieve rotary sealing. The radial fiber reinforcement oil seal is adopted for obtaining the waterproof and dustproof shaft system in the natural environment, and gas exchanging between the inside of a cabin and the outside of the cabin can be prevented. The crossed pin roller shaft ring is adopted for bearing the radial load, axial load and torque load. An internal pressure bearing wedge-shaped ring and an external pressure bearing wedge-shaped ring are used for reinforcing the bearing pressure inside and outside the fiber reinforcement radial oil seal. The effects that the shaft system is convenient and rapid to lubricate and maintain, and sealing is good are achieved.

The invention provides a true wireless Bluetooth headset suite and an assembling method thereof. The true wireless Bluetooth headset suite comprises a Bluetooth headset and a charging box, and the Bluetooth headset and the charging box are arranged in a matched mode; the charging box comprises an outer shell, an inner shell, a rotating shaft part and a limiting part, the limiting part is fixedly connected with one side of the inner shell, the rotating shaft part is arranged in the central axis area of the outer shell and the inner shell in a penetrating mode, and the outer shell is arranged onthe outer side of the inner shell in a sleeving mode; the inner shell comprises a base, earphone limiting grooves are symmetrically formed in the base, and the Bluetooth earphone is connected with the earphone limiting grooves in a matched mode. The charging box is integrally of a circular structure, is small in size and more convenient to carry, is convenient to open and close for use, is matched with the Bluetooth earphone for use, provides different use schemes for users, is stable in overall structure, can realize daily water and dust prevention, and can effectively improve the assembly efficiency of the earphone and the diversified requirements of products.

The invention relates to a microcrystalline surface LED display screen, which comprises a PCB, LED lamp beads, a mask and a microcrystalline layer, and is characterized in that the LED lamp beads arearranged on the PCB in an array manner; lamp holes corresponding to the LED lamp beads are formed in the mask, and each LED lamp bead corresponds to one lamp hole and penetrates out of the lamp hole.The mask and the LED lamp beads are packaged on the PCB through the microcrystal layer, and glass beads are arranged in the microcrystal layer. The mask and the LED lamp beads are packaged on the PCBthrough the microcrystal layer, so that the waterproof and dustproof effects are realized, the wear resistance and scratch resistance can be realized, and the surface protection capability of the microcrystal surface LED display screen is greatly enhanced.

The invention relates to the technical field of unmanned aerial vehicles, in particular to an electronic injection valve body assembly and an unmanned aerial vehicle. The electronic injection valve body assembly comprises an electronic injection valve body, a throttle valve shaft is rotationally arranged in the electronic injection valve body, and a throttle valve blocking piece used for adjusting the opening degree of an electronic injection valve is fixedly arranged on the throttle valve shaft; and the steering engine shell is connected with the electronic injection valve body in a sealed mode, a steering engine is fixedly arranged in the steering engine shell, and the steering engine is connected with the throttle valve shaft through a transmission structure. According to the arrangement mode, the steering engine is arranged in the steering engine shell, and the steering engine shell is hermetically connected with the electronic injection valve body, so that water and dust can be prevented, and the reliability of the engine is improved. Meanwhile, the steering engine directly drives the throttle valve shaft to rotate through the transmission structure, the response speed of the throttle valve can be increased, and the air inflow of the engine can be more accurately controlled.

The invention provides a keyboard frame for a notebook computer, which includes a frame body, and a plurality of key grooves for accommodating keys are provided in the frame body. flush with clearance fit; the upper end of the frame body is detachably connected to a cover plate, and a plurality of through holes corresponding to the key grooves are opened in the cover plate, and the hole wall of each through hole is provided with The rubber ring fixed on the cover plate; the keys are sequentially set in the key groove and the through hole from bottom to top, and the through hole is located in the middle of the key, and the inner diameter of the rubber ring is equal to the outer diameter of the middle of the key, so that the rubber ring The inner circumference fits the outer circumference in the middle of the button. There is no gap between the inner circumference of the rubber ring and the middle of the button, which can prevent dust and water from entering the keyway, and realize dustproof and waterproof; moreover, the cover can be easily removed for cleaning through the detachable connection between the frame body and the cover. It is very convenient to install after drying.

A novel intelligent bus duct disclosed by the invention comprises a bus duct, phase bars, PE bars and a connector assembly, wherein the number of the phase bars is four, the phase bars are divided into two groups and are symmetrically arranged at the left side and the right side of the inner wall of the bus duct, and the PE bars are arranged at the upper side or the lower side of the inner wall of the bus duct; PE bar connecting pieces are arranged at the connecting ends of the PE bars; phase bar connecting pieces are arranged at the connecting ends of the phase bars; the connector assembly comprises a left connector, a right connector and a connector cover plate, a left connector lower supporting piece is arranged at the bottom part of the left connector, a right connector lower supporting piece is arranged at the bottom part of the right connector, and the connector cover plate is arranged at the top ends of the spliced left connector and right connector; and the connector assembly is arranged between the adjacent bus ducts, and the front and rear ends of the connector assembly are connected with the adjacent bus ducts through connecting rods respectively. The novel intelligent bus duct has the advantages of being small in occupied space, high in protection level, high in reliability, convenient to install and high in electricity taking flexibility.

The embodiment of the present invention provides an output terminal and a current transformer. The output terminal includes a backplane, a magnetic ring, and a plurality of binding posts, wherein theplurality of binding posts pass through the backplane and are fixedly connected to the backplane; the plurality of binding posts are insulated from each other; the first end of each binding post is located on the first side of the backplane; the second end of each binding post is located on the second side of the backplane; the magnetic ring is fixedly connected to the backplane to surround the plurality of binding posts; and the magnetic ring protruding from the second side of the backplane has a smaller size than the second end of each binding post protruding from the second side of the backplane. In the embodiment of the invention, the binding posts and the magnetic ring are integrated into the backplane, and the output terminal can be waterproof and dustproof without a cable gland. Wiring points can be checked without disassembling a current transformer box, which facilitates the installation and maintenance of the output terminal, eliminates the need for separately installing themagnetic ring, and reduces the need for installation space.

The invention discloses a minitype car ignition switch device which comprises a rear cover assembly and a contact bridge assembly; the contact bridge assembly comprises a contact bridge body, a contact bridge working face, an elastic sheet and a regulation contact; the contact bridge working face is arranged on the front side of the contact bridge body in a protruding way, the elastic sheet is arranged on the back surface of the contact bridge body, one end of the elastic sheet is fixed on the contact bridge body, the other end of the elastic sheet is fixedly connected with the regulation contact which is arranged on the contact bridge working face, a through hole for allowing the regulation contact to pass through is formed on the position of the contact bridge working face corresponding to the regulation contact, the rear cover assembly and the contact bridge assembly are matched for use, the middle part of the contact bridge assembly is provided with a rotary interface, and five contacts are arranged on the rear cover assembly. Due to the ignition switch, the one-time pass rate of the produced product is increased, the current situation of high aftersale failure rate is changed, and meanwhile, the waterproof and dustproof purpose is achieved and the service life of the product is prolonged.

The invention discloses a mobile phone connector convenient to disassemble and assemble, and particularly relates to the technical field of connectors. The mobile phone connector comprises data linesand a shell, the two sides of the shell are fixedly connected with two groups of data lines, and the top end of the shell is fixedly connected with a supporting structure. By arranging a first connector, a second connector, a third connector and a fourth connector, when a traditional mobile phone connecting base is used for charging connection of a mobile phone, only one connector can be used on the connecting base, therefore the application range of the connecting base is small; four different connectors, i.e. the first connector, the second connector, the third connector and the fourth connector are installed on the connecting base, charging connection can be conducted on an existing mobile phone interface on the market, the first connector can be directly connected with a mobile phone through a data line, the mobile phone does not need to be fixed, The use effect of the connecting base is further improved through the multiple connectors and two sets of connecting modes, and the application range of the connecting base is widened.

The invention discloses an intelligent busway, which includes a busway, a phase row, a PE row and a connector assembly. There are four phase rows, which are divided into two groups and arranged symmetrically on the left and right sides of the inner wall of the busway. The PE row described above is arranged on the upper or lower side of the inner wall of the bus duct; the connection end of the PE row is provided with a PE row connector; the connection end of the corresponding row is provided with a row connector; the connector assembly includes a left connector , the right connector and the connector cover, the bottom of the left connector is provided with a left connector lower support, the bottom of the right connector is provided with a right connector support, and the connector cover is provided on the top of the assembled left connector and right connector; the connector assembly is arranged between adjacent bus ducts, and the front and rear ends of the connector assembly are respectively connected to the adjacent bus ducts through connecting rods; the present invention It has the following advantages: small space occupation, high protection level, high reliability, convenient installation, and high flexibility in taking power.

The invention provides a waterproof and dustproof device of an informatization power supply for an individual soldier. The waterproof and dustproof device comprises an elastic hooping mechanism, a main shell and a waterproof rubber pad, wherein an inputting joint and an outputting joint are hooped by the elastic hooping mechanism; the main shell and the waterproof rubber pad are embraced; a sealing cavity for sealing a mobile power supply is formed between the main shell and the waterproof rubber pad; the elastic hooping mechanism comprises an inputting clamping head, an outputting clamping head and an elastic rubber ring; the elastic rubber ring twines the inputting clamping head and the outputting clamping head in a tensioned manner; and the inputting clamping head and the outputting clamping head are respectively positioned at two ends of the waterproof rubber pad. The waterproof and dustproof device of the informatization power supply for the individual soldier has the advantages that the mobile power supply is sealed through the main shell and the waterproof rubber pad, the inputting joint of the mobile power supply is clamped on the waterproof rubber pad through the inputting clamping head, the outputting joint of the mobile power supply is clamped on the waterproof rubber pad through the outputting clamping head, so that a waterproof and dustproof effect of the mobile power supply is achieved, outdoor application of the mobile power supply is expanded, and the waterproof and dustproof device is not affected by an outdoor environment.

The invention discloses a method and a device for setting cryptographic key factors of dynamic tokens, wherein the method comprises the following steps: receiving cryptographic key data outputted by a first intelligent cryptographic key device by a second intelligent cryptographic key device; and generating cryptographic key factors according to the cryptographic key data. By using the method and the device provided by the invention, the sealing of a dynamic token can be achieved without arranging an opening which is used for programming cryptographic key factors on a shell of the dynamic token.

The invention discloses a stereo panoramic camera with bidirectional support and heat dissipation structure, and relates to the technical field of panoramic cameras. The invention includes a dish-shaped shell, an installation panel, a side video module, an upper video module, a lower video module, a first panel, a second panel, a partition board, a cooling fan, a lithium battery, and a processor. During the lifting shooting, the lifting structure is matched with the first threaded mounting ring to carry out the lifting shooting; when the high-level flight shooting is carried out, the lifting structure is mounted by the UAV and the second threaded mounting ring is used for lifting shooting; the cooling fan rotates The air is returned to the outside from the outside through the first air hole, the cavity, the first air hole, the casing chamber, the second air hole, the chamber, and the second air hole in order to form a heat dissipation closed circuit cycle. The invention can adapt to different shooting requirements, has a delicate structure design, realizes wired signal input and output control, has strong control efficiency and ability, can efficiently dissipate heat, is waterproof and dustproof, and has a long service life.

The invention provides a Ttap type waterproof connector assembly, and relates to the technical field of waterproof connectors. The Ttap type waterproof connector assembly comprises an SC connector, wherein the outer side of the SC connector is sleeved with a waterproof inner shell, the outer side of the waterproof inner shell is sleeved with a waterproof outer shell, and an end cap in threaded connection with the waterproof outer shell is arranged at the front end of the SC connector. The rear end of the SC connector is provided with a connecting piece in threaded connection with the waterproof outer shell, the connecting piece is provided with a waterproof ring abutting against the end of the waterproof outer shell, the end, which is away from the waterproof inner shell, of the connectingpiece is connected with a waterproof tail cap through a thread, and the waterproof tail cap is fixedly arranged on an optical cable sheath. The Ttap type waterproof connector assembly provided by theinvention can be prefabricated on a connector in a factory, can also be assembled on site, and is convenient to operate, simple to construct and reliable in waterproof performance.

The invention provides a novel waterproof dustproof charger with a function of bottom heat dissipation, and the charger comprises a heat-dissipation aluminum plate (1), a PCB (printed circuit board) (2), a housing bottom case (4), a housing top case (5), a housing front baffle plate (6), and a housing rear baffle plate (7). An important high-power chip needing good heat dissipation is tightly attached to the heat-dissipation aluminum plate (1), so as to achieve good heat dissipation of the chip. Meanwhile, the central part of the heat-dissipation aluminum plate (1) is hollowed out to arrange a fan, so as to accelerate the air circulation and achieve the function of the bottom heat dissipation better. The surface is jagged so as to enlarge the contact area of air for good heat dissipation of the aluminum plate (1). During the assembly of the housing of the charger, all modules are fixed through screws, thereby improving the striking resistance of the charger. Internal seaming joints are jointed through glue, thereby forming full-sealed package, and effectively achieving the waterproof and dustproof effects of IP66 level. When the charger is used in a ship and environments full of dust, there is no need of worrying about that an internal chip may be burnt caused by poor effect of heat dissipation, letting alone that dust enters into the charger to cause the short circuit condition of a circuit or the chip. The charger provided by the invention effectively solves the problem of electric energy storage outdoors or in a severe environment.

The invention discloses a modular round lighting lamp. The lamp comprises a power source, a center circle assembly, a ring outer frame part and an LED lamp bead assembly; a connecting groove is formed in the side edge of the center circle assembly, and is in clamped connection with the ring outer frame part through a connecting part, and connection of the center circle assembly and the ring outer frame part can be achieved; at least three assembling grooves are formed in the center circle assembly, the LED lamp bead assembly is located in the ring outer frame part, and is inserted in any one assembling groove through a mother inserting card in the assembly, and connection of the LED lamp bead assembly and the center circle assembly is achieved. Meanwhile, the LED lamp bead assembly is connected with the power source through the wire. The invention further provides an assembling method of the modular round lighting lamp. Modular assembling of the round lighting lamp can be achieved, the number and the position of the LED lamp bead assembly can be adjusted freely, the whole height of the lamp can be freely adjusted, the actual lighting angle and lighting strength needs can be met, and the lamp mounting needs an be better met.

The invention provides a dicing saw. The dicing saw comprises a spindle, a cutting knife which is fixedly connected with the spindle and is driven by the spindle to rotate, and a waterproof and dustproof device which is used for preventing water or dust from entering the dicing saw in the rotating process of the cutting knife. The dicing saw further comprises two guide grooves which extend in the Y-axis direction and are parallel to each other, a fixed frame surrounded by two roller shutter covers connected with the tail ends of the two guide grooves, a movable frame which is located inside the fixed frame and can slide in the guide grooves back and forth, and a PVC thin film, wherein one end of the PVC thin film is fixedly connected with the movable frame, and the other end of the PVC thin film is contained in the roller shutter covers in a winding mode. The waterproof and dustproof device comprises a Y-axis waterproof and dustproof structure and a Z-axis waterproof and dustproof structure. The Y-axis waterproof and dustproof structure comprises waterproof rubber tapes which are installed in the guide grooves so as to prevent water or dust from entering the guide grooves. The Z-axis waterproof and dustproof structure comprises a Z-axis motion part located below the movable frame and a Z-axis water shield with one end being fixedly connected with the Z-axis motion part and the other end being fixedly connected with the movable frame.