76results about How to "Good dustproof function" patented technology

The invention provides a mobile terminal and a side key structure thereof. The side key structure of the mobile terminal comprises a shell, a side key and side key silica gel, wherein the shell is provided with a side key hole; the side key comprises a pressing part and a skirt part arranged at the edge of the pressing part; the pressing part is inserted into the side key hole and is limited through the skirt part; and the side key silica gel is arranged in the shell and is used for isolating the shell into an inner region and a side key acting region, so as to prevent foreign matters from entering the inner region from a gap between the side key and the side key hole when the side key is pressed down. Through the manner, the inner region of the shell can be completely isolated from the outer space; the mobile terminal and the side key structure thereof have good waterproof and dustproof functions; and the side key and the side key silica gel are separately and fixedly arranged, so that the cost of a double-colored injection mould in the prior art is saved and the production cost is reduced.

The invention relates to a ball screw type electric cylinder of which a transmission element is a ball screw pair. The ball screw type electric cylinder comprises a power transmission box, a rectangular rod transmission shaft, a hollow ball screw, a sleeve nut and an outer sliding sleeve, wherein the power transmission box is provided with a power device and a transmission device; the rectangular rod transmission shaft is vertically arranged on the power transmission box; the hollow ball screw, the sleeve nut and the outer sliding sleeve sequentially coaxially sleeve the transmission shaft from inside to outside; the transmission shaft and the ball screw can slide relative to each other; the sleeve nut and the ball screw form the ball screw pair; the upper end of the inner pore wall of the outer sliding sleeve is connected to the upper end of the outer wall of the ball screw through a supporting bearing; the ball screw can be rotated relative to the outer sliding sleeve; the outer sliding sleeve and the sleeve nut can up and down linearly slide through guide keys; and an upper top plate is mounted on the top part of the outer sliding sleeve. When in work, the power device is capable of driving the transmission shaft to rotate through a transmission device; the transmission shaft in rotating drives the ball screw to rotate; and the ball screw in rotating drives the outer sliding sleeve to up and down move, and thus the function of lifting up and down working load is achieved.

The invention discloses a positive-pressure ventilating outdoor cabinet which has relatively high dustproof function and waterproof function, thereby facilitating replacement and cleaning of a second filtering device. The positive-pressure ventilating outdoor cabinet comprises a cabinet body with a cabinet door. The cabinet body is internally provided with an area for accommodating a plurality of equipment modules. The cabinet door of the cabinet body is provided with an air inlet. The air inlet outer cover of the cabinet body is provided with a cabinet air inlet cover. The inside air inlet of the cabinet door is provided with a first filtering device and a fan assembly which are fixed relative to the cabinet door, wherein the first filtering device and the fan assembly are successively arranged in an air inlet direction. The upper position in the cabinet body is provided with an air outlet pipe. Furthermore the air outlet end of the air outlet pipe is arranged on one surface of the cabinet body, wherein the surface of the cabinet body faces the cabinet door equipped side of the cabinet body. The air inlet end of the air outlet pipe faces an area for accommodating a plurality of equipment modules in the cabinet body. The second filtering device is inserted into the cabinet body from the cabinet door equipped side to the air outlet end equipped side. The second filtering device covers the air inlet end of the air outlet pipe.

The invention provides a monitoring product imaging module device comprising a lens and an image sensor, wherein the monitoring product imaging module device further comprises a lens bracket structure, a push plate structure and a back plate structure; the lens bracket structure comprises a supporting plate, and a plurality of guide rods are arranged below the supporting plate; the push plate structure comprises a circuit board and a push plate main body, the back plate structure comprises a back plate main body and a screw, and a top end of the screw penetrates through the back plate main body and leans against a bottom surface of the push plate main body; the guide rods connect the circuit board, the push plate main body and the back plate main body together, a compression spring is arranged on the guide rod between the supporting plate and the circuit board, and a light shielding structure is further arranged between the supporting plate and the circuit board. The monitoring product imaging module device has high compatibility on different lenses and different image sensors, and relatively high market adaptability; in addition, the lens is fixed more quickly due to a self-centering fixing mode, and the reject ratio of the product is greatly reduced; and the wavy light shielding structure is more difficult to leak light or enter dust.

A motor apparatus and a motor driving circuit are provided. The motor apparatus includes a motor module and the motor driving circuit. The motor driving circuit includes a plurality of bridge arm circuits, a temperature sensor, and a control circuit. Each of the bridge arm circuits is controlled by one of the first PWM signals and one of the second PWM signals generated by the control circuit and outputs a driving signal to drive the motor module. The temperature sensor senses a temperature of the bridge arm circuits and provides a temperature sensing value to the control circuit. When the temperature sensing value is greater than or equal to a threshold temperature value, the control circuit increases a duty cycle of the first PWM signal of one bridge arm circuit and a duty cycle of the second PWM signal of the other bridge arm circuits to lower the temperature.

The invention discloses an infrared integrated dustproof vidicon. The infrared integrated dustproof vidicon comprises a vidicon body, a dustproof cover and self-cleaning dustproof glass, wherein the section of the dustproof cover is in a U shape, a buckling cover is arranged on the vidicon body, the self-cleaning dustproof glass is installed at the front end of the vidicon body, a high-definition camera and an infrared lamp located on the periphery of the high-definition camera are installed at the front end of the vidicon body, and the self-cleaning dustproof glass is located outside the high-definition camera and the infrared lamp. In this way, the infrared integrated dustproof vidicon has good dustproof and self-cleaning functions, the service life of the vidicon can be effectively prolonged, and the photography effect of the vidicon can be effectively improved.

The invention belongs to protection equipment of rail tracks, and particularly relates to a track bed ice-melting water-draining protection device which protects sleepers and ballasts in a shielding mode through sleeper protection covers, end protection covers, clamping plate protection covers, water-draining grooves with changeable width and other components. The variety of the components of the track bed ice-melting water-draining protection device is small, the specification is uniform, manufacturing is convenient, clamping bars and claming grooves are adopted between the components, and locking connection is achieved through elastic deformation. The structure is simple, connection is reliable, mounting and dismounting are easy, the ballasts can be conveniently sieved and maintained, and all the components are made of glass reinforced plastic sandwich panels. The track bed ice-melting water-draining protection device has the advantages of being high in strength, low in weight, corrosion resistant, waterproof, aging resistant, long in service life, convenient to maintain, and the like. Carbon fiber electric hot plates are arranged in internal paving layers of all the components, a microcomputer is used for controlling temperature, the track bed ice-melting water-draining protection device has the functions of heating and ice melting, and can prevent frost and snow damage. The track bed ice-melting water-draining protection device is suitable for ice melting, water draining and protection of railway coal transportation dust suppression stations and rail track beds where snow hazards easily occur in winter.

The invention discloses a sortable archive management device based on artificial intelligence, and relates to the technical field of archive management. The device comprises a frame body, outer boxesare fixedly connected to both sides of the frame body, screw rods are rotatably connected between the tops and the bottoms of the inner walls of the outer boxes, bottom boxes are fixedly connected tothe bottom of the sides, back to each other, of both outer boxes, motors are fixedly connected to the bottoms of the bottom boxes, first belt pulleys are rotatably connected to the bottoms of one sides of the inner walls of the outer boxes through a supporting block, and second belt pulleys are fixedly connected to one ends of output shafts of the motors. By means of the sortable archive management device based on the artificial intelligence classification, the outer boxes are fixedly connected to both sides of the frame body, a very good dustproof function is achieved, the device can be opened only by fingerprints, the safety is improved, the output end of a semiconductor fingerprint sensor is connected with the input end of a fingerprint acquirer, and the device is opened only when archive is taken and stored, the operation is intelligent, and the safety is improved.

The invention discloses a double-lip oil-seal sealing device. The double-lip oil-seal sealing device is provided with a framework, wherein the framework is provided with lip rubber, reinforcing ribs, springs, lateral lips and first annular grooves; the lip rubber and the first annular grooves are arranged on a plane of a sealing surface of the framework; the lateral lips are arranged at the bottoms of the first annular grooves; springs are arranged on gaps opposite to the sealing surface of the framework. The double-lip oil-seal sealing device provided by the invention has the advantage that a plane where shafts are vertical to each other is sealed in combination with characteristics of a radial oil seal and an axial oil seal, and has a relatively good dustproof effect.

The invention discloses projector dust preventing device and method as well as a projector equipped with the dust preventing device and relates to the field of projection equipment. The invention aims to achieve more favorable dust preventing function. The projector comprises an air inlet and an air outlet, wherein the air inlet and the air outlet are provided with dust preventing devices; each dust preventing device comprises a grating group which comprises at least two adjacent and parallel gratings; and all the gratings in the grating group are pivoted at the air inlet and the air outlet of the projector. The projector dust preventing method comprises the following steps of: shutting down the projector; driving all the gratings in the grating group pivoted to the air inlet and the air outlet of the projector to rotate; and shutting down the air inlet and the air outlet of the projector by the rotation of all the gratings in the grating group. The projector dust preventing device and method can be used for carrying out dust prevention on the projector.

The invention discloses an environment-friendly nontoxic water-based nail polish remover and a preparation method thereof, and belongs to the field of cosmetic preparation. The nail polish remover isprepared from the following raw materials in parts by weight: 2%-5% of marula oil, 0.5%-2% of polydimethylsiloxane, 0.1%-3% of Indian myrrh resin, 0.2-0.8% of lauric acid, 3%-6% of avocado oil, 5%-8%of modified chitosan, 6%-10% of glycerol and the balance of deionized water. The nail polish remover prepared with the preparation method has the characteristics of being low in production cost, strong in cleaning effect and free of irritating smell, avoiding nail whitening after washing and nail inflammation and being volatilized rapidly. Besides, the nail polish remover has the effects of bacteriostasis and moisture preservation, and finger edge skin after nail polish removal is free of peeling and nail polish residues.

The invention discloses a computer case having the function of cooling a power supply, which includes a case body, a power supply body, a rubber pad and a water tank; the power supply body is fixed in the case body, and a heat dissipation channel is arranged on the top of the case body, the upper end of the heat dissipation channel is provided with a top groove, and a dust-proof ventilation net is installed in the top groove, the spring and the rubber pad are arranged at the bottom of the case body, and a fixing groove is reserved at the side end of the case body, a protruding block is installed in the fixing groove and fixed to the edge side of a side plate which is provided with a reserved ventilation hole, the ventilation hole is inside provided with a dust-proof filter screen, and thewater tank is fixed on the inner wall of the case body, one end of a water cooling pipe is mutually connected with the water tank, and the edge side of the case body is provided with a fan. The computer case having the function of cooling a power supply can dissipate heat of the power supply body through air cooling and water cooling, and has the functions of shock absorption and dust prevention.

The invention discloses a home design drawing show device, and belongs to the technical field of a show device. The home design drawing show device comprises a first support plate, wherein a positionlimiting base is arranged at the upper surface of the first support plate; a first position limiting element is arranged at the top end of the position limiting base; the bottom end of the position limiting base is provided with an electric telescopic rod corresponding to the first position limiting element; a second support plate is arranged above the position limiting base; support rods are arranged at connecting parts of the first position limiting element and the second support plate; a second position limiting element is arranged above the second support plate; and the top end of the second support plate is provided with a driving motor corresponding to the second position limiting element. The home design drawing show device has the advantages that the structure is simple; the use isconvenient; an illumination function is realized, so that a user can conveniently use the show device under the condition with poor light rays; in the use process, the position of a drawing plate canbe regulated in multiple directions, so that the user can more conveniently regulate the position of the drawing plate; and the use experience of the user is improved.

The invention discloses a ventilation and heat dissipation device for low-voltage complete equipment, which comprises an equipment casing, an air inlet is arranged on the right side of the equipment casing, an air outlet is arranged on the left side of the equipment casing, and a fan group is arranged on the inner side of the air outlet. The outer side of the air outlet is provided with a cooling grille, and the outer side of the cooling grille is equipped with a self-hanging louver air outlet. The inside of the equipment housing is equipped with an intelligent temperature controller, and the intelligent temperature controller is equipped with a wireless transmission module. There are also a number of temperature sensors, and an alarm device is provided on the upper end of the equipment shell. The temperature sensor includes a protective shell and a thermistor. There are several thermistors. The thermistor is located in the protective shell. A heat-conducting bonding material is provided, and a heat-insulating packaging material is provided on the outside of the heat-conducting bonding material, and a wire is connected to the thermistor, and a heat-conducting insulating material is provided on the outside of the wire. The invention has the advantages of simple structure, convenient use, good heat dissipation effect, high use safety and accurate temperature monitoring.

The invention discloses a combined type multifunctional router, which relates to the technical field of routers. The router comprises a router main body. The right end of the router main body is detachably connected with an expanded function block. The front side of the router main body is provided with a signal input port and multiple signal output ports. The router main body is articulated with a charging head which can be hidden inside the router main body. The back side of the router main body is articulated with three identical antenna mechanisms. The right side of the expanded function block is provided with a plurality of additional signal output ports and two LED illumination lights. The expanded function block is connected with a dust cover by a hinge mechanism. According to the invention, the structure of the router is simple; the output ports can be expanded to serve as chargers and illumination lights.

The invention provides skin-brightening pearl kudzu vine root cream which has a good effect of whitening and nourishing skin, and enables dark and gloomy skin to be rapidly recovered to be in a healthy state and smooth, fine, white and attractive. The skin-brightening pearl kudzu vine root cream is prepared from the following raw materials in parts by weight: 190-200 parts of water, 5-10 parts of glycerinum, 1-5 parts of sodium lauryl sulfate, 0.1-1 part of allantoin, 0.3-3 parts of pearl powder, 0.1-3 parts of a kudzu vine root extract, 0.1-2 parts of tocopherol, 8-20 parts of mineral oil, 10-30 parts of stearyl alcohol, 0.2-0.5 part of methylparaben, 0.2-0.5 part of methylparaben, 5-15 parts of glyceryl stearate, 1-8 parts of polydimethylsiloxane and 0.1-0.5 part of essence. The invention further provides a preparation method of the skin-brightening pearl kudzu vine root cream.

A dental handpiece is disclosed which has a head housing, a gear shaft having a gear part with gear teeth and a shaft part extending from the gear part, and a dust control seal sealingly fit on the circumferential surface of the shaft part of the gear shaft. The dust control seal is an annular member, and has a seal body, a first lip projecting radially inwardly from the seal body, and a second lip projecting radially inwardly from the seal body above and spaced apart from the first lip, with a space defined between a contact area between the first lip and the shaft part, and a contact area between the second lip and the shaft part.