42results about How to "Improve waterproof sealing performance" patented technology

The utility model relates to the technical field of sunlight rooms, in particular to a movable sunlight room. The movable sunlight room comprises a track and two sets of telescopic arch assemblies oppositely arranged at the two ends of the track. For any telescopic arch-shaped assembly, the telescopic arch-shaped assembly comprises a fixed arch-shaped unit and a movable arch-shaped unit, the fixed arch-shaped unit is fixedly arranged at the end of the track, and the movable arch-shaped unit is arranged outside the fixed arch-shaped unit in a sleeving mode and is in sliding connection with the track; the two movable arch units can slide oppositely along the track until the opposite ends of the two movable arch units abut against each other, and the other ends of the two movable arch units are connected with the corresponding fixed arch units in an adjacent mode respectively. A'side wall + top 'omnibearing ventilation mode can be provided, so that the permeability of the sunlight room is improved.

The invention provides a main shaft structure which comprises a pipeline disc, a rear end seat, a shaft core, a water retaining ring and a rear shaft core end cover, the rear end seat is located on the periphery of at least part of a shaft section of the shaft core, the pipeline disc and the rear end seat are arranged at intervals in the axial direction, and the water retaining ring is further arranged between the pipeline disc and the rear end seat. At least part of the structure of the water retaining ring is located on the periphery of at least part of the structure of the shaft core, the rear shaft core end cover is arranged at the axial upper end of the shaft core, a containing cavity is formed in the upper end of the rear shaft core end cover, a water outlet hole is formed in the water retaining ring, and the water outlet hole is located below the containing cavity and can be communicated with the containing cavity. Water in the containing cavity can be discharged out of the main shaft structure through the water outlet hole. Water can be effectively prevented from entering the motor at the lower end of the spindle structure, the waterproof sealing effect on the motor of the spindle structure is achieved, and the problem that in the prior art, water easily enters the motor of an electric spindle, and potential safety hazards are caused is solved.

The utility model relates to the technical field of charging guns, and particularly discloses a waterproof, anti-heating, anti-electric shock and anti-arc structure of a conversion head, which comprises a CCS1 gun head and an NACS interface connected with the CCS1 gun head, a first copper contact pin, a first signal pin and a PCBA circuit board are arranged in the CCS1 gun head, a first button and a second button are arranged on the NACS interface, and a second copper contact pin is arranged on the first button. The inner side of the first button and the inner side of the second button are each provided with a microswitch electrically connected with the PCBA circuit board, a copper bar, a second copper pin and a second signal pin are arranged in the NACS interface, and a waterproof sealing strip is arranged between the CCS1 gun head and the NACS interface. According to the utility model, the first copper pin and the second copper pin are both connected with the copper bar in a pressure riveting manner, the first button and the second button are internally provided with the microswitches, power is cut off before the gun is pulled out, electric arc generation is avoided, the electric arc prevention function is realized, and the electric shock prevention function is realized by arranging the safety door structure at the output end of the CCS1 gun head. The waterproof sealing performance is improved by arranging the waterproof sealing strip, and the waterproof grade is improved.

The application discloses a kind of stainless steel gutter side TPO fixed structure, including galvanized support by pin fixed on gutter keel;With the fixed stainless steel gutter socket type fixed folding piece of stainless steel;Roof TPO waterproof roll goods are fixedly connected with socket type fixed folding piece of stainless steel and galvanized support device.The application adopts galvanized support piece, and it has gutter fixing and TPO roll support function, improves the stability of overall structure;The application adopts socket type fixed folding piece of stainless steel and is welded with gutter, to ensure reliable connection, excellent waterproof performance;TPO waterproof roll goods in the application and fixed folding piece are mechanically connected and sealed by glue injection, to enhance wind lifting capacity and waterproof tightness;The structure and process of the application can ensure overall sealing effect even in the case of TPO non-full-paved gutter, to prevent rainwater from pouring into indoor.

The present invention discloses a storage plate, a storage plate combination unit, and a battery swap station or energy storage station. The storage plate includes a protruding end and a matching end arranged at two opposite ends of the storage plate. A protruding cavity is formed in the protruding end and the matching end. The protruding end and the matching end both protrude from the same side surface of the storage plate and extend in the same direction. The matching end is used to match with the protruding end of an adjacent storage plate when multiple storage plates are assembled. The protruding end and the matching end are used to control liquids such as rainwater to be discharged from the storage plate from both ends of the extension direction of the protruding end and the matching end, so as to prevent liquids such as rainwater from penetrating into the interior of the storage plate from the connection between the two storage plates. The instantaneous rainfall needs to at least overflow the highest point of the protruding end or the matching end before it can flow to the connection between the two, thereby enhancing the waterproof effect. The structure of the cavity facilitates the assembly of multiple storage plates. Through the connection and matching of the matching ends of two adjacent storage plates with the protruding ends, the rapid assembly of the battery swap station or energy storage station is realized, the assembly efficiency is accelerated, and the structural strength of the storage plate itself and the connection is improved.

The utility model relates to the technical field of external wall panel waterproof structures, in particular to a waterproof structure of an assembly type external wall panel connecting node, which comprises a first external wall panel, a cast-in-place connecting plate and a second external wall panel which are sequentially arranged from bottom to top, and an overhanging connecting rib is arranged at the top of the first external wall panel and extends into the cast-in-place connecting plate; a connecting groove is formed in the bottom of the second external wall panel, a connecting block is arranged on the top of the cast-in-place connecting plate and embedded into the connecting groove, and a waterproof assembly is arranged between the bottom of the second external wall panel and the top of the cast-in-place connecting plate. The overhanging connecting rib, the connecting block and the waterproof assembly have high use stability, and long-term stable use can be ensured.

The utility model relates to an environment-friendly ecological cofferdam which comprises a plurality of cofferdam plates, the cofferdam plates are connected through bolts, one side of each cofferdam plate is fixedly connected with an inserting strip, the other side of each cofferdam plate is fixedly connected with a U-shaped connecting strip, the inserting strips are matched with the U-shaped connecting strips, and the two sides of the outer wall of each inserting strip are fixedly connected with first sealing gaskets. First connecting holes are uniformly formed in the inserting strip and the first sealing gasket; second connecting holes matched with the first connecting holes are uniformly formed in the U-shaped connecting strip; according to the scheme, when the cofferdam is used, the inserting strips and the U-shaped connecting strips are fixed through bolts from the first connecting holes and the second connecting holes, so that the connecting positions between the adjacent cofferdam plates can be limited, and the sealing performance of connection between the adjacent cofferdam plates can be enhanced through the first sealing gaskets; and a second sealing gasket can enhance the waterproof sealing performance between the bottom of the cofferdam plate and the ground, so that when the environment-friendly ecological cofferdam is used, the water flow interception effect can be enhanced.

This utility model discloses a waterproof and sealed wire and cable connector structure for plant lights, including a wire body and a connector body. The connector body is fixedly connected to the end of the wire body, and a sealing protective sleeve is fixedly installed on the outer wall of the connector body. A sealing rubber sleeve is fixedly connected to the inner wall of one end of the sealing protective sleeve, and a transmission ring is fitted on the outer wall of the other end of the sealing protective sleeve. A sealing ring is movably arranged on the inner wall of the transmission ring, and a sealing ring is adhered to the outer wall of the side of the sealing ring. A support arm is fixedly connected to the lower surface of the sealing protective sleeve below the sealing rubber sleeve, and a positioning frame is movably installed at the lower end of the support arm. A protective mechanism is provided on the inner wall of the end of the positioning frame. This waterproof and sealed wire and cable connector structure for plant lights enhances waterproof sealing, thereby preventing water vapor from corroding the connector and improving the safety and stability of the connector.

The utility model relates to the technical field of cable installation and laying. The transformer high-low voltage integrated cable box device comprises a main body structure, the main body structure comprises a base, a cabinet body structure, ventilation openings and sealing washers, and the number of the ventilation openings is two; and the protection structure comprises a hinge and a sealing ring, and one end of the hinge is fixedly connected with the outer surface of one side of the cabinet body structure. According to the utility model, through the attachment of the sealing ring and the sealing washer, a gap generated when the cabinet body structure is attached to the protective door can be filled as much as possible, so that the waterproof sealing capability of the protective structure can be improved to a certain extent, external air can enter the waterproof box only through the air inlet, and the opening of the air inlet is vertically downward; therefore, rainwater can be prevented from flowing into the air inlet, and the design can effectively prevent the rainwater from entering the cabinet body structure.

The utility model provides a reflective film capable of being embossed to form an edge. The reflective film comprises a film body, the film body is provided with a reflective surface layer, a waterproof layer, a polystyrene foam layer and a bottom glue layer which are laminated from top to bottom; the thickness of the polystyrene foam layer is greater than that of the waterproof layer, and the thickness of the polystyrene foam layer is greater than that of the bottom glue layer; the polystyrene foam layer is configured to be capable of correspondingly forming a whole circle of edge finding structure on the peripheral side of the film body in an overflow form after the reflective film is embossed and formed; the polystyrene foam layer is arranged in the film body, the thickness of the polystyrene foam layer is larger than the thickness of the waterproof layer and the thickness of the bottom glue layer, a continuous and uniform edge finding structure can be formed on the periphery of the reflective film at a time according to the principle that polystyrene foam overflows during imprinting forming, and continuous annular protrusions are formed on the periphery of the edge finding structure, so that the reflective area is enlarged, and the reflective effect is improved. Light rays can be reflected more effectively from the side direction and different angles, and the warning effect is remarkably improved.

The utility model relates to cement pole flange reinforcing technical field, and disclose a kind of conical cement pole flange reinforcing structure, including flange plate one, the bottom side of flange plate one is provided with radial support subassembly, the outside sleeve joint of radial support subassembly has conical cover, the sidewall of radial support subassembly is connected with reinforcement rib subassembly and is penetrated, the bottom end of radial support subassembly is fixedly connected with flange plate two, the upper end of flange plate one the conical cover is welded with welding frame. Through radial support subassembly through vertical passage one, circular buffer ring and vertical passage two form elastic support system, both can pass through rigid channel transmission axial load, and circular buffer ring of rubber material can also be used to absorb radial impact force, reduce stress concentration to the damage of cement pole;Radial rod, oblique rod and annular reinforcement rib in reinforcement rib subassembly constitute three-dimensional rigid network, can effectively disperse axial tension, pressure and torque, improve structure overall deformation resistance.

The utility model discloses a drainage pipe anti-seepage device for engineering construction, and relates to the technical field of construction drainage pipes, the drainage pipe anti-seepage device comprises an anti-seepage sealing pipe and drainage pipes, one end of each drainage pipe is provided with a sealing supporting assembly, and a sealing material filling pipe can fill sealing materials to the connecting position of the two drainage pipes through a plurality of filling holes in the bottom. Four supporting frames fix arc-shaped blocks in sliding grooves through locking bolts, the practical stability of an upper clamp and a lower clamp is improved, meanwhile, the effect of limiting a sealing material filling pipe is achieved, and the two upper limiting hoops and the two lower limiting hoops move in adjusting grooves in the outer wall of the anti-seepage sealing pipe through moving blocks; the position distance between every two adjacent upper limiting hoops can be adjusted according to the lengths of different drainage pipes, a locking barrel fixes a sealing strip plate to the tops of the two upper limiting hoops through a movable rod, and the effect of sealing and protecting filler holes formed in the top of a supporting frame is achieved.

This utility model discloses a concrete pipe pile molding mold with a biodegradable release agent, belonging to the field of mold technology. It includes a shell with an upper plate at the top of its outer surface. A rotating wheel is inserted inside the shell, and a knob is installed at the top of the outer surface of the rotating wheel. A connecting block is sleeved inside the outer surface of the rotating wheel. The mold employs a precise temperature control system using heating wires, allowing the curing temperature to be set according to the concrete characteristics. This avoids gas expansion caused by high temperatures, reducing porosity at the source and ensuring a uniform and dense internal structure of the concrete. A vacuum pump at the top of the housing, along with valves and air pipes, actively extracts air from the pipe during concrete pouring, eliminating internal air bubbles and improving concrete density and waterproof sealing performance. Furthermore, the mold's wear-resistant protective layer and heat-insulating buffer layer effectively extend its service life and maintain stable curing temperature, providing a reliable guarantee for the production of high-performance concrete pipe piles.

A kind of steel roof eaves wind-resistant structure, it relates to steel roof technical field, including batten board, multiple self-tapping screws and sealing device.Self-tapping screw passes through the opening on batten board and is connected with eaves beam, and compacts roof board;The diameter of opening is larger than the major diameter of screw, and sealing device is arranged in it, including protective sleeve embedded in hole and sealing ring arranged between screw and protective sleeve, sealing ring is expanded and tightly holds screw when screw is compacted and compacts roof board, and sealing is realized.Ring-shaped gasket and its bottom boss, annular groove on screw, and bending protrusion on batten board are arranged.Sealing device is arranged in the inside of opening, and is less affected by ultraviolet rays, rain, temperature difference and the like, has long service life, and is easy to maintain.The utility model improves the wind resistance and long-term sealing stability of roof.

This utility model discloses a Bluetooth headset with good waterproof sealing performance, including a bottom shell, a front shell, a circuit board, a first button assembly, and a battery. The bottom shell and the front shell are connected by a sealing connection, forming an accommodating cavity between them. The battery is electrically connected to the circuit board. The side wall of the front shell has a first button groove, and the first button assembly is located in the first button groove and electrically connected to the circuit board. The first button assembly includes a button cap, a waterproof soft rubber sleeve, and a pressure-sensitive button. The waterproof soft rubber sleeve is fitted into the first button groove, and the button cap is used to abut against the pressure-sensitive button when compressed. By providing a first button groove on the side wall of the front shell and having the first button assembly located in the first button groove, this utility model can effectively prevent moisture and dust from entering the headset, thereby improving waterproof sealing performance, button sensitivity and resilience, and extending the service life of the Bluetooth headset.

The utility model discloses a deep foundation pit assembly type supporting structure, including steel sheet pile, the lower side of steel sheet pile is equipped with concrete base, the bottom array of concrete base is equipped with a plurality of anchor rods, is equipped with a plurality of groups of hydraulic cylinder on concrete base, the top of hydraulic cylinder all is connected and is equipped with leveling steel sheet, is equipped with profile steel on leveling steel sheet, one side of profile steel is equipped with support rod, is equipped with support plate on support rod, is equipped with connecting rod on profile steel, is equipped with moving block on connecting rod, is equipped with clamping groove symmetrically on moving block, is equipped with clamping spring and clamping block on clamping groove, the lower part of split type concrete prefabricated base is the base with conical anchor rod, and the upper part is steel leveling platform, and then horizontal support profile steel and support rod, are convenient for horizontal support to steel sheet pile in foundation pit, through the cooperation of clamping spring and clamping block on moving block, it is convenient for support plate and profile steel connection, profile steel and support rod connection.

The utility model discloses a cylindrical grinding machine main shaft, including the axle body, the shell, the inner cover, the outer cover, the air curtain hole, the drain hole, the axle body is coaxially loaded in the shell, the both ends of shell are covered with the inner cover, the outer cover is stacked with the inner cover outside, be provided with first water retaining ring on the axle body, the inner cover is provided with the integrative second water retaining ring, the second water retaining ring installs in the port inner wall of shell, first water retaining ring, second water retaining ring mutually cooperate and form the zigzag water retaining joint, the inner cover is provided with the air curtain hole in the outer end port of water retaining joint, the outer cover is cooperated in the axle body outer peripheral surface and forms the water inlet joint. Through above -mentioned mode, the utility model provides a cylindrical grinding machine main shaft, forms the quick drainage channel through the air curtain hole and the drain hole, and realizes directional control and arranges simultaneously with air seal groove and guide angle, and the bearing distribution structure is optimized to the grinding wheel load simultaneously, thereby significantly improved the waterproof sealing performance and running stability of main shaft whole.

The utility model provides a multi-channel door and window drainage structure which is used for solving the technical problems that an existing door and window drainage effect is poor, and rainwater easily enters a room and a door and window sliding groove. Comprising a lower frame body, a blocking frame is installed on the lower frame body in a buckled mode, a hidden sliding groove and a first clamping groove are formed by the two sides of the blocking frame and the two sides of the lower frame body respectively, and a grating plate is arranged on the blocking frame; a plurality of first flow channels are formed in the grating plate and the blocking frame at intervals, the first flow channels are used for communicating the upper end face of the grating plate with the upper end face of the lower frame body, a plurality of second flow channels are formed in the upper end face of the lower frame body at intervals, and the second flow channels are used for communicating the hidden sliding grooves, the first flow channels, the first clamping grooves and the outer side of the lower frame body. By arranging the first flow channels and the second flow channels, rainwater can be smoothly drained to the outer side of the window, the drainage performance is good, rainwater is effectively prevented from being accumulated in the window frame, and the waterproof sealing performance of the window is improved.

This invention discloses an integrated waterproofing and sealing construction system for the intersection nodes of municipal underground utility tunnels, belonging to the field of municipal engineering technology. It includes a base, a liquid storage tank fixedly connected to the right side of the upper surface of the base, a support block fixedly connected to the left side of the upper surface of the base, a pump fixedly connected to the upper surface of the liquid storage tank, a pumping pipe fixedly connected to the input end of the pump, and the output end of the pumping pipe extending into the interior of the liquid storage tank. A pipe clamping cavity is fixedly connected to the upper surface of the support block. This construction system achieves efficient utilization of waterproofing and sealing materials through multiple designs, significantly reducing construction costs and material waste. On one hand, the liquid storage tank is equipped with an integrated stirring and wall-mounting cleaning structure. A motor drives a rotating disk to move a rotating column and rod, causing the sliding vertical column to move up and down along the extension cavity. When the sliding block slides along the curved groove, it drives the stirring blades to rotate, continuously stirring the material.

The utility model discloses a clothes processing device and combined clothes processing equipment. The clothes processing device comprises a first box body and a first roller arranged in the first box body, the first roller is provided with a containing cavity and a roller opening communicating with the containing cavity. The diameter d1 of the cylinder opening and the diameter d3 of the containing cavity meet the condition that d3 / d1 is larger than 1.2 and smaller than 1.7. According to the clothes processing device, the size proportion of the cylinder openings relative to the containing cavity is controlled, so that the diameter of the cylinder openings and the diameter of the containing cavity can be reasonably considered, that is, the diameter of the containing cavity is larger than that of the cylinder openings, and in the height direction of the first box body, the edge of the lower cylinder opening needs to be higher than the inner wall face of the lower side of the containing cavity; when clothes enter the containing cavity, the clothes cannot cross the edge of the barrel opening, and therefore the situation that the clothes are clamped when the barrel opening is sealed by the door body can be prevented. Besides, when the relation is met, the size of the barrel opening can be increased as much as possible under the condition that the diameter size of the containing cavity is considered, and therefore a user can put clothes conveniently.

The utility model provides a food plastic box with good waterproof and sealing effects. The plastic food box with the good waterproof and sealing effects comprises a plastic box body, the bottom sealing waterproof rubber ring is fixedly arranged at the bottom of the plastic box body; the bottom plate is mounted at the bottom of the plastic box body; the butterfly bolts are arranged on the bottom plate and are in threaded connection with the plastic box body; the auxiliary drying mechanism is mounted on the bottom plate and is used for drying the food stored in the plastic box body; the cover plate is positioned at the top of the plastic box body; the top sealing waterproof rubber ring is arranged at the bottom of the cover plate; and the plurality of clamping lock fixing mechanisms are arranged on the plastic box body and are used for clamping and fixing the cover plate on the top of the plastic box body. The food plastic box with the good waterproof sealing effect has the advantages of being good in waterproof sealing effect, having an auxiliary drying function on food and being beneficial to long-term storage of the food.

This utility model discloses a wearable heatstroke early warning and monitoring device, including an outer shell with a wristband connected to it. A heart rate sensor, a blood oxygen sensor, a body temperature sensor, and a sweat sensor are housed inside the outer shell. A sweat collection groove is provided on the wristband, communicating with the sweat sensor. A controller and an alarm are also provided inside the outer shell, communicating with the heart rate sensor, blood oxygen sensor, body temperature sensor, and sweat sensor. A detachable bottom shell is provided at the bottom of the outer shell. A first groove is provided on the bottom edge of the outer shell, with two elastic baffles fixed in the middle of the first groove. A first sealing ring is installed between the outer elastic baffle and the outer edge of the first groove, and a second sealing ring is installed between the inner elastic baffle and the inner edge of the first groove. A ball head is provided on the inner side of the bottom shell to engage with the elastic baffles. This utility model overcomes the shortcomings of the prior art, facilitates the replacement of the sealing rings, and improves the sealing performance of the wristband.

The utility model discloses a bathroom double-movable moving door with a waterproof sealing function, which comprises a bathroom wall and a bathroom doorsill, and the bathroom doorsill is fixedly connected with the lower part of the bathroom wall; and a bathroom moving door is arranged above the bathroom doorsill. A track rubber mat is arranged on the inner side of the door moving track, is connected with the bathroom moving door in a sliding manner and is used for preventing water from seeping from the space between the bathroom moving door and the door moving track; the movable door of the bathroom is divided into an upper part and a lower part, the upper part is a first door part, and the lower part is a second door part. Due to the design of the bathroom wall and the bathroom doorsill, the user can have a bath in the bathroom. The track rubber mat can prevent water from seeping from the space between the bathroom moving door and the door moving track, and the waterproof sealing performance of the bathroom during bathing is improved; and due to the separate design of the movable door of the bathroom, the user can be prevented from feeling discomfortable due to claustrousness, and the risk of oxygen deficit caused by steam gathering can be prevented.

This utility model discloses a maintenance-free apron deck, relating to the field of low-altitude airport construction technology. Its structure includes a row of decks connected side-by-side, a row of spaced supports, and water troughs installed at both ends of the deck. The supports are placed below the deck, and the deck and supports are connected by a first fastener. The water troughs are equipped with connecting plates and water-retaining grooves that overlap with the ends of the deck, and the connecting plates and water-retaining grooves are connected to the deck by a second fastener. This utility model features excellent waterproof and drainage performance, anti-slip safety, lightweight yet high strength, easy installation and maintenance of electric heat tracing systems, stable structure and convenient adjustment, a complete water guiding system, and protected cable management; overall, it improves the safety and applicability of the apron.

The invention discloses a high-air-tightness COB light source structure which comprises a substrate, a circle of box dam rubber ring is arranged on the upper surface of the substrate, a die bonding groove is defined by the box dam rubber ring, a plurality of LED chips are arranged in the die bonding groove of the substrate, and the die bonding groove of the substrate is filled with fluorescent powder glue so that the LED chips can be wrapped by the fluorescent powder glue. The upper surface of the fluorescent powder glue is covered with an isolation glue layer, the joint between the isolation glue layer and the box dam rubber ring is provided with a circle of covering rubber ring, and the manufacturing method comprises the following steps: arranging a plurality of LED chips in a light source area on the upper surface of the substrate; a circle of box dam rubber ring surrounding the light source area is arranged on the upper surface of the substrate, and heating and pre-curing are conducted; the solid crystal groove is filled with fluorescent powder glue, and heating and pre-curing are carried out; spraying isolation glue on the upper surface of the fluorescent powder glue and the top of the box dam rubber ring, heating and curing to form an isolation glue layer, and enabling the isolation glue layer to cover the whole upper surface of the fluorescent powder glue and the top of the box dam rubber ring; and a covering rubber ring is arranged at a connecting gap between the isolation rubber layer and the box dam rubber ring, and heating and pre-curing are carried out.

The application relates to the field of underwater propelling motor matching equipment, and proposes an integrated driver for an underwater propelling motor, which comprises a shell one, the outer wall of the shell one is provided with a fixed frame, the outer wall of the fixed frame is inserted with a shell two, the outer wall of the shell one is fixedly connected with an arc-shaped frame, the outer wall of the shell two is fixedly connected with a connecting frame, the outer wall of the arc-shaped frame is inserted with a splicing frame one, the bottom end of the splicing frame one is inserted with a splicing frame two, the inner wall of the splicing frame one is screw-connected with a bolt, and the inner wall of the shell two is fixedly connected with a sealing gasket. In the utility model, the shell can be quickly disassembled through the cooperation of the bolt and the splicing frame, and when underwater operation is carried out, water flow can enter the cavity to uniformly extrude the sealing gasket, so that the sealing gasket is tightly attached to the shell connecting end face, the waterproof sealing performance of the sealing cavity of the driver is effectively enhanced, and the underwater operation stability of the device is guaranteed.

The utility model relates to the technical field of waterproof structures, and provides a waterproof structure which comprises a flexible silica gel sleeve, and a first connecting ring and a second connecting ring are coaxially arranged at the two ends of the flexible silica gel sleeve correspondingly. The first connecting ring is used for being connected with the top cavity wall of a mounting cavity of a lamp shell of the variable beam angle mining lamp, and the second connecting ring is used for being connected with a lens of the variable beam angle mining lamp. The waterproof performance of the waterproof structure is improved, and the limitation of the waterproof structure on the movement of the lens is reduced.

The utility model belongs to the technical field of circuit boards, in particular to a waterproof sealing structure for a PCB (printed circuit board), which comprises a waterproof shell, a groove is arranged above one side of the waterproof shell, a pressure spring is arranged in the groove, and a limit block is arranged at one end of the pressure spring. According to the utility model, the clamping block is pressed to enable the limiting block to extrude the pressure spring, so that the clamping block is driven to leave the clamping groove and retract into the groove, and then the cover plate is pulled to move upwards to open the waterproof shell, so that a maintainer can directly take out the circuit board main body for maintenance; the operation of taking out the circuit board from the interior of the waterproof shell is relatively convenient, the interior of the waterproof shell is always in a dry state through a drying agent, then the waterproof shell is sealed through clamping of a cover plate and the waterproof shell, the waterproof sealing performance of the device is further improved, and meanwhile the waterproof sealing performance of the device is improved through embedding of a rubber sealing plate and a rubber sealing frame. And the waterproof sealing performance of the device is further enhanced.

The utility model relates to the technical field of maternal and infant feeding, specifically is a breast pump with liquid level detection device, including host computer, host computer casing and milk storage casing, host computer sets up in the host computer casing, and milk storage casing has the milk storage cavity, and the host computer casing is installed with liquid level sensor, and the waterproof sealing structure is installed between the host computer casing and liquid level sensor, and the installation surface elasticity of waterproof sealing structure presses in liquid level sensor surface and / or the surface of host computer casing, and liquid level sensor passes through waterproof sealing structure electricity connection host computer. The utility model improves waterproof sealing effect of installation position through waterproof sealing structure between host computer casing and liquid level sensor, and through installation surface elasticity presses in liquid level sensor surface and the surface of host computer casing, avoids the situation that installation gap is easily infiltrated liquid and enters host computer casing inside, and easily user cleans the surface liquid trace, realizes waterproof sealing effect, and the characteristic of elasticity presses in facilitates assembly personnel to dismount waterproof sealing structure, improves assembly efficiency.