47results about How to "Prevent air pressure" patented technology

A vehicle fuel cap comprises a casing body for opening / closing a filler opening of a filler neck communicating with a fuel tank; and a lid that is equipped at an upper portion of the casing body and is formed of a conductive material, and the vehicle fuel cap forms a discharge portion in the lid for discharging static charge in the lid to the filler neck, wherein the discharge portion comprises a projection form provided on an inner peripheral face of the lid opposite to an outer peripheral edge of the filler opening, and on the inner peripheral face a longitudinal groove is formed at both sides of the discharge portion and along an axial direction of the casing body.

An acoustic transducer has a substrate having a cavity, a vibrating electrode plate disposed above the substrate and having a void portion that allows pressure to escape, a fixed electrode plate disposed above the substrate opposite the vibrating electrode plate, and a leak pressure regulation portion that hinders leakage of air pressure by passing through the void portion when the vibrating electrode plate is not undergoing deformation, and that becomes separated from the void portion and allows pressure to escape by passing through the void portion when the vibrating electrode plate undergoes deformation from being subjected to pressure.

The invention discloses a lever switching valve, which is characterized by comprising a switching cavity and a movable pin, and the switching cavity is axially provided with water outlet cavities at both ends and a water inlet cavity in the middle section; the outer end of each water outlet cavity is provided with a sliding section, and an inner convex ring is arranged between the two ends of the water inlet cavity and the water outlet cavity; the movable pin is in a dumbbell shape, is axially fit into the switching cavity, and is axially provided with pistons at both ends and a water passing section, and the water passing section is connected into the inner convex ring in a penetrating way; a water passing channel is arranged between the water passing section and the inner convex ring, and one end of the movable pin is movably fit to a lever; when the inner end of one piston in the water outlet cavity is in seal fit to the inner convex ring at the corresponding side, a waterway between the water outlet cavity and the water inlet cavity is blocked, and meanwhile, the water inlet cavity at the other side is communicated with the water inlet cavity through a waterway between the water passing section and the inner convex ring. The lever switching scheme with laborsaving switching, balanced switching force, and shorter stroke of movable pin is realized.

Provided are an in-vehicle reporting apparatus and a reporting system configured to prevent errors in reporting. The in-vehicle reporting apparatus stores a mounting position of each tire in association with identification information identifying the tire, a vehicle height acquisition unit acquires a vehicle height of the vehicle, a vehicle height determination unit determines whether the vehicle height is greater than or equal to a predetermined height, and a reporting unit reports information that depends on the mounting position of a tire stored in the storage unit in association with acquired identification information and on acquired air pressure information of the tire when the acquired vehicle height is not greater than or equal to the predetermined height, and does not report information that depends on the mounting position of the tire, when the acquired vehicle height is greater than or equal to the predetermined height.

The invention discloses flexible edge rolling equipment for a rear wheel cover. The flexible edge rolling equipment is characterized in that the equipment comprises a base, wherein an outer supporting frame is connected to the base and comprises two symmetrically-distributed side plates, and limiting square holes are formed in the side plates; a back plate and a front limiting plate are connected between the two side plates; and a pair of first sliding blocks is fixedly arranged on the inner side of the back plate. The equipment further comprises a clamping wheel supporting plate, wherein a pair of front sliding ways and a pair of rear sliding ways are arranged on the two faces of the clamping wheel supporting plate respectively, and the rear sliding ways are connected with the first sliding blocks in a sliding mode; a supporting platform is arranged at the bottom of the clamping wheel supporting plate, an air cylinder is arranged on the supporting platform, and the working end of the air cylinder is connected with the bottom end of a depended wheel supporting plate; and limiting blocks are arranged on the two sides of the clamping wheel supporting plate and matched with the limiting square holes.

A tire valve system allowing a user to virtually check a vehicle's tire pressure and tire temperature remotely.

The invention discloses a steel ball press-in machine for a universal wheel of luggage. The steel ball press-in machine structurally comprises a press-in support rod, a press-in device, an air pump motor, a pressurizing air pump, a funnel assembling rod, a steel ball funnel, a rotating ring, a steel ball connecting pipe, a universal wheel placing table, a placing supporting rod and a main machinetable; the main machine table is a cuboid, the press-in support rod is vertically welded to the middle part of the left side of the top end of the main machine table, the press-in support rod is a cuboid, and the top end of the press-in support rod is vertically welded to the middle part of the left side of the bottom end of the press-in device; the placing supporting rod is a cylinder, the bottomend of the placing supporting rod is vertically connected with the main machine table in a locking mode, the universal wheel placing table is vertically welded at the top end of the placing supporting rod, and the universal wheel placing table is located at the right side of the pressing-in support rod. According to the steel ball press-in machine, when a user uses the machine, automatic fallingpositioning of the machine and press-in of balls can be realized only by controlling pressure pumping and charging of the machine, through an ejector rod and springs in a positioning plate, a pressingrod can be unlocked to press the steel balls only when the pressing rod is positioned to the point so that the steel balls can be prevented from being pressed and falling down in advance, and therefore empty pressing can be prevented, safety of the machine is guaranteed, and the machine is convenient to use.

The invention discloses a rope threading machine for a solid wood floor core board, which comprises a gantry frame, a workbench, and a transmission device. The grooving motor, the saw blade, and the grooving motor drive the saw blade to rotate and cut the grooving; the control cabinet is connected with the grooving motor and the transmission device; the connecting rope device includes two pressure rollers and two connecting ropes, and one end of the connecting rope is fixed by the pressure roller On the bracket below the guide rail, the position of the pressure wheel is on the same horizontal line as that of the saw blade; a circle of grooves is arranged on the periphery of the pressure wheel, and the groove width of the groove is smaller than the diameter of the connecting rope. The invention has the advantages of simple structure, convenient maintenance, and simple operation. The discarded wooden slats are connected in series by connecting ropes to form a core board, which saves cost and energy, and is environmentally friendly and safe. , The connecting rope is separated from the pressure wheel to cause the air pressure of the pressure wheel, which improves the qualified rate and quality of the core board.

The application discloses a forced demoulding mechanism with an on-machine quick release structure, including a forming template, an undercut forming block, a connecting rod, a drive assembly, an on-machine quick-release insert and a gas-assisted demoulding component; the forming template A connecting channel is opened longitudinally on the top, and a quick-release chamber is opened on the upper end of the forming template; the inverted forming block is detachably arranged on the upper end of the connecting rod, and the connecting rod is movable longitudinally on the In the connecting channel; the on-machine quick-release insert is detachably fitted in the quick-release chamber; the on-machine quick-release insert is longitudinally provided with a guide hole, and the guide hole communicates with the connecting channel , the underturned forming block passes through and fits tightly in the guide hole; the underturned forming block is provided with a micro-air hole, and the connecting rod is provided with an air channel, and the micro-air hole communicates with the air road. It has the advantages of smooth demoulding and high molding quality.