167results about How to "Avoid tightness" patented technology

The invention relates to the technical field of batteries, and discloses a battery and a shell assembly thereof, and the shell assembly comprises a top cover provided with a mounting hole; the electrode piece penetrates through the mounting hole, the electrode piece comprises a pole part, a connecting part and a fixing part, one end of the pole part is connected with one end of the connecting part, a groove is formed in the other end of the connecting part, the fixing part is arranged at an opening of the groove, the fixing part is arranged around the connecting part, the fixing part is located on one side of the plate face of the top cover, and the fixing part is used for being electrically connected with the tab; the connecting plate is arranged on the other side of the plate surface of the top cover, the connecting plate is welded on the pole part to form a welding part, and the connecting plate is used for being electrically connected with the busbar; wherein the thickness of the groove wall of the groove is t mm, the depth of the welding part is h1 mm, and t / h1 is larger than or equal to 0.25 and smaller than or equal to 3. According to the invention, external overcurrent and internal overcurrent can be balanced, so that the phenomenon of local overheating is avoided, and insulation or sealing failure of an insulating part and a sealing part is prevented.

The invention discloses electrodialysis equipment, and belongs to the field of water treatment devices. The spraying assembly is matched with the electrodialysis assembly; the hydraulic cylinder is connected with the electrodialysis assembly; an oil tank; one end of the pump body is communicated with the oil tank; the inlet end of the one-way valve is communicated with the other end of the pump body, and the outlet end of the one-way valve is communicated with the hydraulic cylinder; one end of the pressure sensor is communicated with the oil tank, and the other end of the pressure sensor is communicated between the outlet end of the one-way valve and the hydraulic cylinder; one end of the electromagnetic valve is communicated with the oil tank, and the other end of the electromagnetic valve is communicated between the outlet end of the one-way valve and the hydraulic cylinder; and the controller is electrically connected with the pressure sensor and the electromagnetic valve. The invention has the technical effects that the pressure can be automatically controlled conveniently, the pressure is prevented from being too large or too small, and the cleaning performance is good.

The invention provides a vehicle door glass pre-bending molded surface design method, an analogue simulation system, a device and a storage medium. The vehicle door glass pre-bending molded surface design method comprises the following steps: defining a pre-bending area and a pre-bending amount according to glass molded surface data, and constructing a glass pre-bending molded surface according to the pre-bending area and the pre-bending amount data; the pre-bending molded surface of the vehicle door glass is designed by optimizing the pre-bending molded surface of the glass according to the glass forming parameters, the vehicle door glass with the molded surface pre-bending in a local area can be obtained by means of the design method, and outward deformation of the vehicle door glass is counteracted; and a good sealing state of a vehicle door glass area and a normal lifting function of glass are ensured.

The utility model discloses a high-rise outer wall aluminum mold K plate slurry leakage prevention structure which comprises a flow guide part, the top of the flow guide part is located between the surface of an outer wall and an aluminum mold, the bottom of the flow guide part is far away from the surface of the outer wall, the bottom of the flow guide part is provided with a connecting and guiding part, and the flow guide part guides leaked slurry to the connecting and guiding part. Leaked slurry is guided to the guiding part through the flow guiding part, the slurry is effectively prevented from flowing to the surface of an outer wall, and therefore the smoothness and attractiveness of the surface of the outer wall are guaranteed, the overall quality of a building is improved, and the workload of later repair and decoration is reduced. And secondly, the slurry leakage prevention structure simplifies the cleaning process, and the construction cost is reduced. Due to the fact that the slurry is collected in the connecting and guiding part in a centralized mode, constructors only need to clean the connecting and guiding part regularly without tedious cleaning work on the surface of the whole outer wall, and the construction efficiency is improved.

The present invention discloses a liquid flow battery stack glue injection sealing structure and a glue injection method, the purpose is to solve the technical problems that the existing stack sealing structure is easy to fail and the removal cost is high. The technical scheme is: a liquid flow battery stack glue injection sealing structure and a glue injection method, including a plurality of electrode frames, an upper end plate and a lower end plate, glue injection grooves are provided on both sides of the electrode frame, a connecting hole is provided between the two glue injection grooves, a plurality of electrode frames are stacked to form a stack, the upper end plate is arranged on the top surface of the stack, the lower end plate is arranged on the bottom surface of the stack, and is fixedly connected by a screw rod, two glue injection holes are provided on the top surface of the upper end plate, and a connected glue injection channel is formed between the glue injection groove, the connecting hole and the glue injection hole, and the glue injection hole can also be provided on the side of the electrode frame. Through the glue injection sealing surface structure, the present invention can improve the applicability and durability of the seal while ensuring the sealing effect, and extend the service life of the battery stack seal.

The utility model relates to the technical field of corrugated pipe manufacturing, and discloses an injection molding device for a corrugated pipe, which comprises a working table, a vertical plate is fixedly mounted at the top of the working table, a sliding groove is formed in the vertical plate, two sliding blocks are movably mounted in the sliding groove, and the two sliding blocks are movably mounted on the working table. An upper die is fixedly installed on the front face of one sliding block. Compared with a traditional device, the device has the advantages that the upper mold is conveniently sealed through the two-way screw rod and the sliding block, and then injection molding liquid is injected from a preset injection molding pipe to quickly fill the mold, so that a corrugated part and an embedded flaring part of the corrugated pipe are formed on a forming machine at a time; by means of the technical innovation, the production process is simplified, the problems that in the flaring manufacturing process, pipe socket and spigot joint are difficult, and the sealing performance is poor are solved, and the product quality and the production efficiency are greatly improved.

The utility model relates to bag technology field discloses a kind of outdoor sports backpack quick tightening mechanism, including backpack main body, elasticity mechanism, cloth belt, shoulder strap and fixed band, the utility model in to the elasticity of backpack main body side face is contracted, so that elasticity drives the fixed band of backpack main body side face to be mutually close, so that backpack main body side face is contracted by the contraction of elasticity and is tightened space, prevent the interior article of backpack main body from being less and producing shaking when moving, make elasticity continuous "S" shape contraction and tighten the stability of article in the backpack main body, prevent the part article in the backpack main body from being not easily fastened by elasticity and shaking when moving, and the force of upper and lower sides of blocking plate and arc strip clamping elasticity is under the action of improving fixed force to resist the contraction force of elasticity, so as to improve the fastening effect of elasticity contraction, prevent the jolt in the process of moving to cause elasticity slowly loosen and tighten backpack main body.

The utility model discloses a simple rubber waterstop connecting structure which comprises a connecting structure body used for being connected to the combination portion of a first waterstop plate and a second waterstop plate, and the connecting structure body comprises a supporting table arranged at the connecting end of the first waterstop plate in an extending mode; the lapping plate is arranged at the connecting end of the second water stop plate in an extending manner, is connected to the upper part of the supporting table and is used for connecting the first water stop plate and the second water stop plate into a whole; the connecting piece is connected to the connecting end of the first water stop plate and the connecting end of the second water stop plate and used for stably connecting the first water stop plate and the second water stop plate together. The rubber waterstop is simple in structure and novel and reasonable in design, the two adjacent rubber waterstops are tightly connected, the problems that after the rubber waterstops are installed, the joint portion possibly falls off, sealing is not tight and the like can be effectively prevented, meanwhile, the connecting pieces can ensure that the joint portion is tightly attached to the surrounding area, a good sealing effect is achieved, and the service life of the rubber waterstops is prolonged. And moisture permeation is effectively prevented.

The utility model discloses an ammonium nitrate solution concentration blending reation kettle with anti -explosion function belongs to reation kettle equipment technical field, the utility model discloses a reation kettle body is communicated with the discharge valve at reation kettle body bottom, can carry out even heating to solution through the electric heating plate in the reation kettle body inner wall bottom groove, avoid local temperature too high and cause ammonium nitrate to decompose gas and cause explosion, the cooperation design of stirring rod and top motor can carry out sufficient stirring to ammonium nitrate solution in reation kettle, make solution concentration distribution even. The annular ring and the explosion -proof pipe fixedly connected with the annular ring that reation kettle body surface sets up up and down, effectively enhanced the overall structural strength of reation kettle, the gas outlet pipe of top annular ring and the gas inlet pipe of bottom annular ring mutually cooperate, and the outside cold gas enters the space between the explosion -proof pipe and reation kettle body, and then even cooling is carried out to reation kettle body, and then gas is discharged to the outside from the gas outlet pipe, and the device has the advantages that the explosion -proof effect is good.

The invention relates to the technical field of golf carts, and particularly discloses a golf cart roof adjustable fixing device which comprises a cart body, a base is fixedly connected to the top of the cart body, two sets of sliding rail mechanisms are arranged on the edge of the upper side of the base, a trunk is arranged between the two sets of sliding rail mechanisms in a sliding mode, and a driving mechanism is arranged on the base. A box cover is arranged on the upper side of the luggage box, a plurality of inserting grooves are fixedly connected to the inner wall of the luggage box, a plurality of partition plates are detachably connected into the inserting grooves, linkage supporting mechanisms are arranged between the luggage box and the two sets of sliding rail mechanisms, the luggage box can be controlled to be overturned to one side of the vehicle body, and the difficulty of storing articles is greatly reduced; especially for storing heavy articles, the articles are easier to store and take, certain potential safety hazards are avoided, and the possibility that the articles fall off during storage can be reduced.

The utility model discloses a water tank with constant pressure measurement function belongs to water tank technical field, aims at solving the most water outlet point of prior art is located water tank under one side of liquid level, and the position of water outlet point is fixed immovably, along with the water supply of carrying out, the liquid level in water supply water tank is constantly reduced, wherein the distance between water outlet point and liquid level will constantly reduce, lead to the water pressure of water outlet point constantly small, although the water tank usually has the water replenishing mechanism to reach the purpose of time water replenishing, but actually still can form fluctuation to the water pressure of water supply water tank, cannot realize constant pressure water supply, and the water replenishing of water tank single, every day also cannot carry out measurement statistics, thereby the actual water replenishing of subsequent management personnel cannot know water tank accurately, thereby bring the problem of influence to the judgment and overhaul of personnel. Including stainless steel water tank, the upper side of stainless steel water tank is connected with inlet pipe, and the other side below of stainless steel water tank is connected with outlet pipe.

The application discloses a power transmission coupling device of a high-power diesel generator set, which comprises a moving and carrying trolley, a first axial pushing mechanism arranged on the moving and carrying trolley and located below a motor rotor, a lifting part capable of lifting and a bearing contact part rotatably arranged on the top of the lifting part, a plurality of ball bearings are arranged on the bearing contact part, the bearing contact part is used for bearing the motor rotor in a drooping state and allowing the motor rotor to rotate and reset to axial flatness, and an axial butt joint moving and carrying mechanism arranged on the moving and carrying trolley, the axial butt joint moving and carrying mechanism comprises a butt joint shaft capable of horizontally moving and rotating, and a convex block is arranged on the butt joint shaft. The device solves the problem that the axial flatness of the motor rotor is maintained during the installation process of the motor shell, the uniform gap between the inner wall of the motor shell and the outer circular surface of the motor rotor is maintained, the large-area contact and sliding jam caused by the drooping of the rotor are avoided, the anti-corrosion coating or the insulating layer on the outer surface of the motor rotor is prevented from being scratched and peeled off, and the insulating reliability and the internal cleanliness of the generator are ensured.

The utility model provides a kind of vacuum chamber sealing door, including sealing cover and lifting mechanism, the front and back of sealing cover are equipped with the opening allowing material to go in and out;Two vertical sliding rails are equipped on the inner side wall of sealing cover, door frame is slidably installed on sliding rail, door body is slidably installed in door frame, limit block is equipped in sealing cover inside;Guiding hole is equipped in the side wall of door frame, guiding pin matched with guiding hole is equipped in the side wall of door body, sealing ring is equipped on the abutting surface of door body and sealing cover.The utility model determines the height position of door body by limit block, and utilizes the constraint of guiding hole, forcibly drives door body to move horizontally when door frame continues to drop, so that it is automatically pressed in the inner side of sealing cover opening, converts lifting movement directly into sealing pressing force, without additional pressing device, simplify overall structure and improve action reliability, significantly reduce the complexity of equipment, manufacturing cost and maintenance difficulty, while ensuring that sealing performance meets the stringent requirements of vacuum chamber.

This utility model relates to the field of glass processing technology, and in particular to a fully automatic integrated glass bonding and gluing machine. The fully automatic integrated glass bonding and gluing machine includes: a base, a glass body placed on top of the base, an electric push rod fixedly connected to the top of the base, an extrusion plate fixedly connected to the output end of the electric push rod, adjusting plates equidistantly installed on the top of the base, a first clamping plate fixedly connected to the side of the adjusting plate closest to the glass body, a second clamping plate fixedly connected to the side of the adjusting plate closest to the glass body, a scraper plate installed between multiple sets of corresponding first and second clamping plates, a driving component for moving the adjusting plates, a reciprocating component for reciprocating movement of the scraper plate installed inside the multiple sets of first clamping plates, and an adjusting component for changing the position of the adjusting plates. The fully automatic integrated glass bonding and gluing machine provided by this utility model has the advantages of precise clamping, automatic scraping, and flexible adjustment.

The utility model relates to the technical field of water faucet, concretely relates to a bathroom faucet convenient to assemble, technical solution main points include valve body, valve core subassembly, end cover and handle, the hot water flow channel, cold water flow channel, water outlet flow channel and installation groove are arranged in the valve body, the tank bottom of installation groove sets up hot water hole, cold water hole and water outlet hole, the isolation department is arranged in the valve body, the isolation department is symmetrically arranged two and separates hot water and cold water, two isolation departments form the hook groove area, the canyon area, hot water hole, cold water hole are in the hook groove area, and water outlet hole is in the canyon area, and at least two positioning grooves are arranged on the tank bottom, the positioning column of two with the positioning groove insertion is arranged on the valve core subassembly, makes the water pass hole of valve core subassembly and hot water hole, cold water hole and water outlet hole mutually coincide. The utility model realizes reliable convenient assembly through above -mentioned structure.

The utility model discloses a clamping and embedding assembled button switch which comprises a switch body which comprises an insulating outer shell and a switch function assembly. A main body of the insulating outer shell is a regular cylindrical barrel, an annular clamping and embedding step edge is formed on the upper edge of the regular cylindrical barrel, and the switch function assembly is packaged in the regular cylindrical barrel. First concave parts are formed in the positions, on the two sides of the regular cylindrical barrel, of the insulating outer shell, elastic buckles are formed at the positions of the first concave parts, and the elastic buckles are matched with the annular clamping and embedding step edges to form a combined clamping and embedding structure. The insulating outer shell is respectively provided with a group of wiring structures on the bottom surface and one side of the lower part of the regular cylindrical barrel, and the wiring structure on one side of the lower part of the regular cylindrical barrel is located in the second concave part. The utility model has the advantages of good assemblability, excellent insulating property, strong stability, long service life and the like, and is suitable for various electronic devices, especially for the operation panel assembly work of closed devices.

This application relates to the field of gas sensor packaging technology, specifically to an automated packaging method, system, and packaging device for gas sensors. The method includes: pre-establishing a packaging process parameter-gas-sensitive channel adaptation model; calculating the actual coaxiality deviation and correcting the sealing pressure reference value based on the gas-sensitive channel aperture; starting the integrated packaging unit, applying pre-pressure according to the corrected sealing pressure, and simultaneously collecting the temperature of the sealing area through an infrared temperature measurement module to determine whether dynamic adjustment of the welding temperature is needed; after welding, maintaining the corrected sealing pressure, and dynamically adjusting the pressure holding time based on the gas-sensitive channel length and the creep coefficient of the sealing material to complete the sealing process. This application achieves a precise balance between sealing performance and conduction efficiency by establishing a dynamic adaptation model of process parameters and gas-sensitive channel structure, overcoming the coupling imbalance bottleneck of existing technologies.

The utility model discloses a kind of early warning devices about preventing steel wire rope to be twisted into speed reducer, it is related to early warning device technical field, to solve the problem of steel wire rope running groove and being twisted into speed reducer to cause its damage, operation interruption. The device includes support, touch type positioner, alarm, screw rod and contactor;Support is welded on the outside of speed reducer, across speed reducer and steel wire rope reel, for fixing other components;Touch type positioner is installed on the top of support by screw rod, for signal transmission;Alarm is installed in crane cab;Contactor is installed in hoist electrical control cabinet, for controlling hoist operating circuit and triggering alarm. When working, if steel wire rope deviates from predetermined path and touches touch type positioner, positioner sends signal to contactor, contactor immediately cuts off hoist power supply to make it stop running, and triggers alarm to prompt operator to handle. The device can prevent steel wire rope to be twisted into speed reducer in real time, can guarantee that crane grab bucket is safely and efficiently operated.

This invention relates to the field of pipeline seepage prevention technology, specifically to a pipeline seepage prevention deformation control support device based on soft soil foundation. The device is installed at the connection point of two adjacent pipelines. The device includes a bearing ring, a support member, and at least n sets of limiting members. Bearing rings are connected to the outer walls of both pipelines near the connection point. Each set of limiting members includes two bearing plates, arranged in an inverted V-shape with alternating front-to-back arrangements. Each bearing plate has a recessed groove containing a friction plate that slides back and forth. When the lower left side of the n bearing plates on the left side of the n sets of limiting members is far from the lower right side of the n bearing plates on the right side, the two friction plates in the same set make relative pressure contact. The support member supports the limiting members. This invention solves the problem that when a support device supports a pipeline, it easily shifts downwards with the settlement of the soft soil foundation, leading to deformation and leakage at the weak connection point of the supported pipeline.

The utility model relates to one -way valve technical field discloses a one -way valve for LNG gas cylinder pressure gauge, including valve body, the top of valve body is provided with the connecting pipe, the inside of valve body is provided with the overhaul mechanism, the overhaul mechanism is used for preventing the leakage of gas cylinder gas when overhauling pressure gauge, the bottom of connecting pipe is provided with fixed establishment, fixed establishment is used for improving the stability of connection, the overhaul mechanism includes support frame no.

The utility model discloses a portable equipment of vehicle-mounted instrument program offline download belongs to the field of automobile electron technique, including shell, control panel, state indicating unit, connecting wire bundle and man -machine interaction unit, and control panel fixed mounting is in the shell inside, and state indicating unit sets up in the shell surface, and connecting wire bundle one end is electrically connected with control panel, and the other end is from the shell inside and stretches out, and man -machine interaction unit sets up in the shell surface, and state indicating unit is electrically connected with control panel, the control panel includes MCU module, CAN communication module, external interface, power module, LED module, touch module, NOR FLASH module and USB communication protection interface, can be offline operation completely, through built -in large capacity NORFLASH storage program file, gets rid of the dependence of PC, notebook computer and so on host computer equipment, has promoted the portability and flexibility of field operation.

The utility model relates to the technical field of valve detection, in particular to a high-efficiency valve sealing performance detection device, which comprises a box body, a sliding block connected onto the box body in a sliding manner, a support mounted on the sliding block, a bottom plate mounted at the bottom end of the support, a guide rail fixedly connected onto the bottom plate, a sliding seat connected onto the guide rail in a sliding manner, and a bracket connected into the sliding seat in a sliding manner, the sliding seat is in threaded connection with a first rotary knob, the end of the first rotary knob abuts against the bracket, the sliding seat is in threaded connection with a second rotary knob, the end, facing the guide rail, of the second rotary knob is rotationally connected with an abutting block, and the abutting block abuts against the guide rail. The air outlet end of the air injection pipe is connected with one clamp. The horizontal position of the bracket is adjusted by sliding the sliding seat on the guide rail, and the height of the bracket is adjusted by sliding the bracket in the sliding seat, so that the bracket is adaptive to valves with different lengths or diameters, and the bracket can conveniently and rapidly perform preliminary positioning on the valves with different specifications.

The application relates to the technical field of mechanical seals, and discloses a combined sealing water-cooling mechanical seal structure, which comprises a rear bearing seat end, a front bearing seat end, a positioning hole and a shaft groove. The inner sides of the rear bearing seat end and the front bearing seat end are provided with a pressure-bearing bearing mechanism which is used for replacing traditional bearings to reduce wear caused by vertical stress. The inner side of the pressure-bearing bearing mechanism is provided with a water-cooling cooling mechanism which is used for assisting heat dissipation. The periphery of the water-cooling cooling mechanism is provided with a sealing mechanism which is used for sealing and packaging structure. The pressure-bearing bearing mechanism comprises an inner bearing seat end, the two sides of the inner bearing seat end are provided with matching ring grooves, the side surfaces of the matching ring grooves are slidably connected with rotating shaft rings, and the two sides of the inner bearing seat end are slidably connected with eight roller shaft columns. The application enhances oil distribution uniformity, reduces local dry friction and heat accumulation, thereby comprehensively improving transmission efficiency, reducing maintenance frequency, and effectively preventing jamming and early fatigue failure.

The utility model discloses a kind of winding filter elements, including filter shell, the filter shell is provided with water outlet, the upper portion of the filter shell is provided with gland, the gland is provided with water inlet, winding filter element is installed between the filter shell and the gland, the filter shell is fixed with the fixed column of equidistant distribution in circumference, the fixed column is slidably connected with limit hook, the limit hook is limited with the filter shell and the gland cooperation, spring is fixed between the limit hook and the fixed column, the gland is provided with limit structure, cleaning positioning structure is provided in the filter shell.The utility model is by rotating ring to release limit, then press sliding ring can compress spring, make limit hook and filter shell and gland separate, the quick disassembly and installation of gland are realized, the design discards traditional thread connection, effectively avoids the thread wear and tear and sealing failure problem caused by repeatedly screwing, greatly simplifies maintenance process.

The present invention relates to a riveting apparatus capable of preventing the occurrence of fastening omission and a riveting method using the same, and more particularly to a riveting apparatus including a riveting unit, a moving unit connected to the riveting unit, the moving unit being configured to move the riveting unit, a first moving guide unit configured to guide the longitudinal movement of the moving unit, a pair of second moving guide units located at longitudinal opposite ends of the first moving guide unit, the pair of second moving guide units being configured to guide the transverse movement of the first moving guide unit, a first position sensor provided under one end of the first moving guide unit, and a second position sensor provided under one end of one of the pair of second moving guide units and a riveting method using the same.

The present application relates to the technical field of high polymer material, and particularly relates to a kind of nanoparticle alkali-resistant hydrophobic modifier.The nanoparticle alkali-resistant hydrophobic modifier is composed of 25-55 parts of skeleton resin, 15-45 parts of anchoring agent, 1-10 parts of reinforcing agent and 100-300 parts of solvent.The present application uses perfluoropolymer system, so that the modifier is resistant to temperature of 400 DEG C or above and strong alkali corrosion;After sintering, it forms homogeneous and firm combination with PTFE matrix, solving the problem of interface peeling.The modifier is particularly suitable for preparing sealing gasket for alkaline electrolytic cell in high-salt and high-humidity environment at sea, significantly improving the dimensional stability and service life of the gasket.

This invention discloses a multi-strand synchronous stranding winding machine for soft copper conductors, relating to the technical field of conductor processing equipment. The machine includes a base, with a frame fixedly mounted on the top. Rotary shafts are rotatably mounted on both sides of the frame. A first guide frame, a second guide frame, and a mounting plate are fixedly mounted on the outer wall of the rotating shafts. A first servo motor is fixedly mounted on one outer wall of the frame. A first clamping assembly allows for quick clamping and fixing of the pay-off reel, making the clamping operation convenient and efficient. The pay-off and traction components can also adjust the clamping roller spacing via bolts to accommodate different specifications of soft copper conductors, offering strong versatility. Through the cooperation of the pay-off assembly, the second clamping assembly, the transmission structure, and the winding assembly, integrated synchronous operation of multi-strand soft copper conductors from pay-off, stranding, traction to winding is achieved. This not only improves the accuracy and quality of soft copper conductor processing but also optimizes the operation process and increases production efficiency.

This utility model discloses a dual-mode hydrological radar measurement device based on closed-loop attitude adjustment, belonging to the field of hydrological monitoring technology. It includes a sealed electronic cabin and an attitude adjustment mechanism. A pitch angle adjustment component is located between a bottom fixed base and a rotating base, used to drive the bottom fixed base to pitch and swing horizontally. An azimuth angle adjustment component is connected between the rotating base and the top fixed base, used to drive the rotating base to rotate horizontally vertically. Through a periodic task scheduling mechanism and pre-emptive closed-loop attitude adjustment, it can automatically and cyclically switch between water level measurement mode and flow velocity measurement mode under unattended conditions. Before each measurement, the radar beam is precisely adjusted to the optimal incident angle of the corresponding mode. Simultaneously, the "attitude adjustment first, measurement later" execution logic ensures that each data acquisition is performed under optimal physical conditions, fundamentally improving the measurement accuracy of water level and flow velocity parameters and realizing fully automated continuous hydrological monitoring.

The utility model discloses a vehicle body controller belongs to the field of automobile electron, include: controller casing, controller casing is provided with installation cavity, waterproof and ventilative component, waterproof and ventilative component sets up in the installation cavity, waterproof and ventilative component is connected with controller casing, and waterproof and ventilative component is used for the intercommunication of installation cavity and outside air, PCBA board, PCBA board sets up in the installation cavity, and PCBA board is spaced apart and set up with waterproof and ventilative component, connecting component, and the vehicle body is connected with controller casing through connecting component, and the plug -in component, the plug -in component is electrically connected with PCBA board, and the plug -in component is connected with controller casing, and the plug -in component is spaced apart and set up with waterproof and ventilative component. The utility model discloses through setting up ventilative component in the installation cavity of controller casing, makes installation cavity and outside air intercommunication, can balance the atmospheric pressure inside and outside the shell, avoids the shell damage or sealing failure caused by the atmospheric pressure difference, and can prevent dust, moisture and the like from invading through reasonable structure design.