3464 results about "Front cover" patented technology

The package holder incorporates a front cover having several rungs assembled in a cascading, accordion style that when the front cover is in its expanded position to cover the interior cavity of the package holder, the several rungs are fully expanded and when the front cover is in its collapsed position, the several rungs fit together. The package holder includes a frame structure having one or more back surfaces and a bottom surface. The back surface is mountable using fasteners to a physical surface of a property. The package holder incorporates electronic and computer based locking mechanisms as well as non-electronic locking mechanisms. The package holder incorporates tracking sensing systems to track a package from a third-party delivery service that can automatically access the interior cavity of the package holder. A user can access the package from an interior of a property through an opening of the package holder.

A portable electronic device may include an enclosure including a front cover defining a front exterior surface of the portable electronic device and a rear cover defining a rear exterior surface of the portable electronic device. The portable electronic device may further include a rear-facing camera and a rear-facing flash including a light emitting component defining a plurality of illuminable regions. The light emitting component may be configured to illuminate a first subset of the plurality of illuminable regions to illuminate a first field of view and illuminate a second subset of the plurality of illuminable regions, the second subset different from the first subset, to illuminate a second field of view different from the first field of view.

An NC lathe 1 for machining a work W includes a housing 11, a chip bucket 8 that is placed inside of the housing 11 in order to receive chips produced when the work W is machined, an opening formation portion 112 that is provided in the housing 11 and has an opening 1121formed therein through which the chip bucket 8 can be pulled out to the outside of the housing 11, and an opening cover 15 that is detachably attached to the housing 11 so as to close the opening 1121 in an attached state attached to the housing 11, wherein the opening formation portion 112 has a slit 1122 that is formed continuously with the opening 1121 so as to extend in a width direction of the opening 1121, and that allows the opening cover 15 removed from the housing 11 to be inserted into the housing 11.

The present invention discloses an embedded hard cover, comprises rotating shaft, edge strip, guide rail system, clip system, multiple plate bodies; the multiple plate bodies are connected by the rotating shaft; the edge strip is connected to both ends of the rotating shaft and the plate body, the rotating shaft, the plate body, the edge strip form the main body of the lid; the guide rail system is used to support the cover body, and the clip system is used to fix the guide rail system on the car body, the guide rail system includes a guide rail, the guide rail upper plane and the guide rail lower plane; the front plate comprises a front plate side rail, which is provided with a support edge supported on a flat surface of the guide rail, a gap between the front panel side rail and the lower surface of the guide rail.

A dispenser for sheet materials is disclosed. The dispenser includes a housing having an including a cover assembly, a back frame member comprising a first side and a second and opposite side forming an interior surface of the housing, and the first side of the back frame member comprising at least one mating receptor; and a plate comprising a carrier member primarily made from plastic and a decorative facia, wherein the carrier member has a facia side coupled to the decorative facia and a back and opposite side, including a locking element, wherein the plate is configured to be removably coupled to the first side of the back frame member when the locking element of the carrier member is releasably engaged to the mating receptor of the back frame member such that the decorative facia forms an exterior surface of the dispenser.

The utility model belongs to the field of terminal equipment installation, and particularly discloses a terminal equipment fixing and installing structure and cabinet equipment, the terminal equipment fixing and installing structure comprises a front cover, an installing box and a panel, a cavity is formed in the installing box and extends to one side to form an opening, and the cavity is matched with terminal equipment to be installed; one side of the opening of the mounting box is fixedly connected to one side of the front cover, the front cover is provided with a mounting port communicated with the opening, one side of the panel is attached to a terminal device placed in the mounting box after the mounting port is closed by the panel, and the front cover is provided with a locking piece used for fixing the panel. According to the application, after the wireless terminal device is carried to the marine ship, the terminal device can be stably mounted in the mounting box, so that the terminal device and the ship body are connected into a whole, and the terminal device is prevented from being damaged due to bumping on the traveling ship body.

The application provides a heavy truck axle housing manufacturing method, which comprises the following steps: selecting a ladder-shaped pipe blank, firstly performing axial annular material supplementing pre-expanding to obtain a pre-expanding pipe blank with an upper flat side, a lower side and front and rear convex sides, the wall thickness of the upper flat side is almost not thinned, and the wall thickness gradually decreases from the upper side to the lower side along the annular direction; and performing final expanding after annealing to obtain an axle housing pipe, the upper side of the pre-expanding pipe blank becomes a front flat surface with a bell-shaped additional front cover, the front and rear sides are shaped into a H-shaped side beam, the lower side becomes a semispherical rear oil cover, and the wall thickness of the front flat surface and the side beam is increased. The pre-expanding die is composed of left and right pressing heads, left and right sliding dies, an upper control die and a lower control die, the cavity axial width of the upper flat area of the upper control die is greater than that of the front and rear convex sides. The manufactured heavy truck axle housing is free of welds and oil leakage, the wall thickness of the front flat surface and the side beam of the axle housing is large, the bending and torsion resistance is improved, the diameter expansion rate is large during hydraulic expanding, the wall thickness thinning rate is small, the forming quality is good, and the material utilization rate is high.

The invention provides a texturing hot box and a false twist texturing machine, and belongs to the technical field of textile machinery. The deformation hot box comprises a second heat preservation layer which is at least attached to two first side walls, exposed out of the heat preservation groove and arranged oppositely, of the first heat preservation layer, or the second heat preservation layer and a first fixing assembly are jointly attached to the two first side walls, exposed out of the heat preservation groove and arranged oppositely, of the first heat preservation layer. The front cover plate forms a strip-shaped opening exposing the heat preservation groove. The box door is pivotally connected with the front cover plate so as to movably open and close the strip-shaped opening; the two second side walls, oppositely arranged in the second direction, of the hot rail at least abut against the second heat preservation layer. The first fixing assembly is used for keeping the relative position of the first heat preservation layer and the second heat preservation layer, and the first fixing assembly is separated from the front cover plate to at least partially expose the second heat preservation layer. According to the deformation hot box and the false twist texturing machine disclosed by the invention, the energy consumption of the deformation hot box and the false twist texturing machine is reduced, and the situation that chips of a heat preservation structure are diffused to a heat preservation groove and a hot rail to pollute fibers is prevented.

The invention discloses an explosion-proof three-phase asynchronous motor which comprises a shell, a front end cover, a rear end cover, a stator, a rotor and a rotating shaft, wherein the stator, the rotor and the rotating shaft are arranged inside the shell. The radiating fins are arranged on the outer wall of the machine shell, the reciprocating lead screw transmission mechanism is connected through the supporting frame, the cleaning plate is driven to do reciprocating motion along the guide rod, dust on the radiating fins is automatically removed through the arc-shaped brush plate, and efficient radiating is ensured. The cooling box is arranged below the machine shell, the cooling box and the machine shell are designed to share the wall, an internal cooling pipe conveys cooled gas into the machine shell through a gas circulation system, the temperature is forcibly reduced, combustible gas is dispersed, and the anti-explosion safety is improved. The eccentric wheel on the rotating shaft drives the piston pipe to reciprocate, one-way flow of gas is achieved in combination with the non-return cover plate structure, and active gas circulation is formed in cooperation with the annular gas inlet channel and the gas outlet hole. The motor integrates self-cleaning heat dissipation and gas circulation cooling functions, adapts to high-temperature, high-humidity and closed environments, effectively reduces energy consumption, prolongs the service life of the motor, and is suitable for flammable and explosive places.

The invention discloses a low-noise stable planetary gear speed reducer, and relates to the technical field of speed reducer equipment. Comprising a main body mechanism, the main body mechanism comprises a main body bin, a front cover is fixedly buckled on one side of the main body bin, and a rear cover is fixedly buckled on the other side of the main body bin; a gear ring is fixedly connected to the middle of the inner wall of the body bin. A discharging assembly is arranged on the lower wall of the body bin. A tailstock mechanism is arranged on one side of the main body mechanism; an oil conveying mechanism is arranged on the other side of the main body mechanism; an oil injection assembly is arranged between the main body mechanism and the tailstock mechanism, the oil injection assembly comprises an oil tank mechanism, and nozzle mechanisms inserted into the main body bin are uniformly communicated with the oil tank mechanism at equal intervals; the oil tank mechanism comprises an oil tank, a tank cover is fixedly buckled to one side of the oil tank, the tank cover is fixedly connected with a rear cover, an input assembly is arranged on one side of the upper wall of the oil tank, impurities hidden in tooth seams can be flushed out and flow out along with leaked oil, and the impurity removing performance is improved.

The present application relates to a garment processing device comprising: a drum comprising a drum body for providing a garment storage space, a front cover forming the front surface of the drum body, a rear cover forming the rear surface of the drum body, and a drum introduction opening provided through the front cover; a fixed panel positioned to be spaced apart from the rear cover and provided with a guide hole; a mounting body inserted into the guide hole to be able to reciprocate in a direction perpendicular to the fixed panel, the mounting body being divided into a first area facing in a direction in which the rear cover is positioned with reference to the fixed panel and a second area positioned opposite to the first area; a head provided in the first area to prevent the mounting body from being separated from the fixed panel; a power transfer portion comprising a housing fixed in the second area, an input shaft having one end positioned outside the housing and having the other side positioned inside the housing, an output shaft having one end fixed to the rear cover through the fixed panel and having the other end positioned inside the housing, and a gear unit positioned inside the housing so as to transfer rotational movements from the input shaft to the output shaft; a stator fixed in the second area or the housing so as to form a rotating field; a rotor, to which one end of the input shaft is fixed, and which is rotated by the rotating field; and a first displacement limiter provided in the second area to be positioned between the fixed panel and the housing, thereby limiting the displacement of the housing toward the fixed panel.

The invention particularly discloses a fractured rock mass grouting three-dimensional visualization test device and method, and relates to the technical field of rock mass engineering. The device comprises a test box body, a liquid inlet and outlet system, a monitoring system and a dynamic water environment simulation assembly, the test box body is made of a transparent acrylic material and is composed of an upper cover plate, a lower cover plate, a front cover plate, a rear cover plate, a baffle and two side cover plates, and a core experiment module is arranged in the test box body; the liquid inlet and outlet system is sequentially connected with the liquid holding device, the peristaltic pump, the valve, the Doppler flow velocity sensor and the test box body through rubber pipes; the monitoring system integrates an image collection unit and a data monitoring unit, an industrial-grade 3D camera and a binocular camera achieve visualization of the displacement process, and a fiber bragg grating pressure sensor synchronously collects fracture pressure data and transmits the fracture pressure data to a computer through a multifunctional data collection module. The device can be used for observing the displacement process of the slurry in the three-dimensional fracture in real time, synchronously monitoring key parameters, adapting to complex test working conditions and providing reliable support for grouting law research.

The invention belongs to the technical field of evaporation residue detection. According to the cavity mechanism, the detection system and the detection method for evaporation residue detection, an upper cover assembly is provided with a sample placing opening used for filling a sample and a cup taking opening used for taking a test cup for weighing, opening and closing of the sample placing opening are controlled through a front cover assembly, so that only part of the test cup is exposed when the sample is filled; the problems that the test cavity side opening cover cannot accurately and quantitatively inject the sample liquid and the injection pipe cannot be cleaned are solved, and the influence on other test cups during sample injection is avoided; opening and closing of the cup taking opening are controlled through the cup taking opening cover assembly, so that during weighing testing, only a to-be-weighed testing cup is exposed every time, the influence on other testing cups during weighing is avoided, and through arrangement of the sample placing opening and the cup taking opening, the environmental influence is effectively avoided, and the testing precision is improved.

This invention discloses a pneumatic rust remover, comprising a gun-shaped body with a trigger and an on / off valve assembly mounted on the handle, and a cylinder. The gun-shaped body has a cylindrical cavity formed in its barrel section. The cylinder is installed in a cylinder sleeve and, together with the cylinder sleeve, piston, valve seat front cover, and valve seat rear cover, forms an impact assembly. A vibration damping and buffering assembly is installed inside the cylindrical cavity of the gun-shaped body. The vibration damping and buffering assembly consists of a connecting sleeve, an impact isolator, and a cylinder buffer pad. The cylinder buffer pad is press-fitted between the bottom of the cylindrical cavity and the rear end face of the connecting sleeve. The impact isolator is press-fitted onto the front annular surface of the connecting sleeve via a locking nut, and the locking nut is screw-fitted to the cavity opening of the cylindrical cavity. The rear end of the cylinder sleeve passes through the locking nut and extends into the sleeve cavity of the connecting sleeve, where it is screw-connected. An air inlet valve assembly is provided inside the sleeve cavity. This invention offers a comfortable grip, high rust removal efficiency, good shock absorption, and is adaptable to rust removal tools with different functions.

The invention discloses a prawn culture batch feeder with an EM bacteria decomposition function, and relates to the technical field of batch feeders, the prawn culture batch feeder comprises a transverse track framework, and a walking trolley is mounted on the transverse track framework; a feed storage tank for storing feed is mounted on the walking trolley; a screw feeder is arranged on one side of the storage tank; the tail end of the screw feeder is connected with the feed feeding mechanism; the feed feeding mechanism comprises a feeding front cover and a rear cover, and a screening cylinder is mounted in the rear cover; a block breaking assembly is installed in the screening barrel in a matched mode. According to the feed crushing device, the block crushing assembly also rotates, hardened feed can be crushed while the block crushing assembly rotates, the feed which is not crushed can be stirred into the auger roller, then the auger roller is used for conveying the feed back into the storage tank, and therefore circulating feeding of the feed can be formed, and repeated crushing of the hardened feed is facilitated; the granular feed falls into the front feeding cover and the rear feeding cover again through the screening cylinder and is discharged through the feeding pipe at the bottom of the rear feeding cover, and therefore feeding of the feed is achieved.

A front cover and a rear cover are fixedly installed and define a cavity, a driving gear shaft and a driven gear shaft are installed in the cavity, a first gear on the driving gear shaft is meshed with a second gear on the driven gear shaft, and the two gears and the inner wall of the cavity define an oil suction cavity and an oil discharge cavity. The two floating side plates are arranged on the two sides of the two gears in a penetrating mode through the driving gear shaft and the driven gear shaft respectively, an ear-shaped high-pressure oil groove and an unloading groove are formed in the face, close to the gears, of each floating side plate, the ear-shaped high-pressure oil grooves are close to one side of the oil discharge cavity, the unloading grooves are close to one side of the oil suction cavity, and the two ends of the unloading grooves are communicated with through holes of the floating side plates respectively. An ear-shaped groove is formed in the face, away from the gear, of each floating side plate, and a compensation area is formed on the floating side plates around the ear-shaped grooves. And a radial gap is formed between the peripheral edge of the floating side plate and the inner wall of the cavity. The comprehensive performance of high pressure, large displacement, low noise and high efficiency of the bevel gear pump is improved.

An electrical connector assembly quickly and easily provides mechanical and electrical connections between two flat flexible conductors, each having multiple electrically conductive traces provided thereon, in a sealed environment that resists the entry of contaminants therein. The electrical connector assembly includes an electrically conductive structure, a wire contact wedge supporting the electrically conductive structure, a connector housing supporting the wire contact wedge and the electrically conductive structure, and a front cover supported on the connector housing.

The invention provides a permanent magnet radial-axial collaborative balancing device and method for a shield pump, and belongs to the technical field of shield pumps. The device comprises a pump shell, an impeller, a rotor assembly, a stator assembly, a shaft, a thrust bearing, a rotor permanent magnet component and a static permanent magnet component, the rotor permanent magnet component and the static permanent magnet component correspond to each other, the rotor permanent magnet component is embedded below an impeller front cover plate opening ring, and the static permanent magnet component is embedded into the corresponding inner wall of the pump shell. The magnetization direction and the axis of the pump shaft form a preset inclination angle and are in mirror symmetry, so that a repulsive magnetic circuit with opposite same-name magnetic poles is formed; space magnetic force generated during working can be decomposed into radial and axial components. The radial component provides restoring force pointing to the center when the rotor deviates, and the radial stability is enhanced. The axial component counteracts the axial thrust of the fluid, and the thrust bearing load is reduced. External energy input is not needed, the structure is compact, vibration noise can be effectively restrained, and the service life of the bearing is prolonged.

An electronic watch may include a housing defining a side wall, a display, a front cover positioned over the display, and an input system configured to receive a rotational input and a translational input. The input system may include a crown including a knob external to the housing and a rotor coupled to the knob and configured to rotate in response to the rotational input and translate in response to the translational input. The input system may further include a first laser module configured to direct a first laser beam onto the rotor and receive first reflected light from the rotor, a second laser module configured to direct a second laser beam onto the rotor and receive second reflected light from the rotor. The electronic watch may further include a processing system coupled to the first and second laser modules and configured to determine a parameter of the rotational input.

The invention discloses a printer mounting structure and an automatic assembly method thereof, the printer mounting structure comprises a front cover, a middle frame, a base, a flip cover and a movement of a printer, the front cover is provided with a lead-in structure for positioning a wire pressing plate, and the middle frame is provided with a positioning piece for positioning a mainboard and a positioning structure for positioning a weighting block. The base is provided with a guide positioning structure used for guiding assembly and preventing looseness, the turning cover is provided with a rubber roller mounting structure used for assembling a rubber roller, and positioning sleeves used for limiting axial movement of the rubber roller together with the rubber roller mounting structure are arranged on the two sides of the rubber roller. Positioning and clamping structures which are matched with one another are arranged among the machine core, the front cover, the key lamp panel, the label and the middle frame, by optimizing the positioning and connecting structures of all the assemblies, automatic and accurate assembly is achieved, manual intervention is reduced, and the production efficiency and the assembly quality are improved.

The invention provides a pneumatic driving part and a pneumatic valve, and relates to the technical field of valve control. The pneumatic driving piece comprises a front cover, a rear cover, a cavity and a piston piece; the first end of the cavity is connected with the front cover, the second end of the cavity is connected with the rear cover, the piston piece is arranged in the cavity, and the cavity is divided into a first inner cavity corresponding to the front cover and a second inner cavity corresponding to the rear cover based on a piston head of the piston piece; the piston piece is used for moving based on the pressure difference between the first inner cavity and the second inner cavity; the front cover is provided with a first one-way sealing piece, and the first one-way sealing piece is used for buffering the moving tail end, moving in the first direction, of the piston piece. The rear cover is provided with a second one-way sealing piece, and the second one-way sealing piece is used for buffering the moving tail end, moving in the second direction, of the piston piece. The first direction is the direction from the rear cover to the front cover, and the second direction is the direction from the front cover to the rear cover. And the movement tail ends of the piston piece in different directions can be buffered, and impact caused by inertia is effectively reduced.

The invention provides a high-power two-stage pump axial force adjusting device with a complex leakage channel. The high-power two-stage pump axial force adjusting device comprises a first-stage pump and a second-stage pump. A primary pump impeller is installed on the main shaft and comprises a primary pump impeller front cover plate, the primary pump impeller front cover plate is coaxially sleeved with a primary pump front floating ring, and axial force adjustment is achieved by adjusting the flow of a primary pump front leakage channel through a radial sealing gap of the primary pump front floating ring. The first-stage pump impeller rear cover plate comprises a first-stage rear cover plate body, the axial rear end face of the first-stage rear cover plate body integrally extends backwards in the axial direction to form a first-stage throttling convex shoulder, and the first-stage throttling convex shoulder is coaxially sleeved with a first-stage pump rear floating ring. The first-stage throttling convex shoulder divides a first-stage pump rear leakage channel into a high-pressure area before floating ring leakage and a low-pressure area after floating ring leakage, area distribution of the high-pressure area and the low-pressure area is changed, and adjustment of axial force is achieved. According to the device, the axial force adjustment problem of the high-power two-stage pump with a complex leakage channel is solved, and the working reliability of an engine is improved.

This invention provides a linear driving mechanism having a housing, front and rear covers fixed at opposite ends of the housing, a stator arranged inside the housing, and a hollow rotor arranged inside the stator, driven by the stator to rotate. The linear driving mechanism further includes a rolling lead screw fitted inside the rotor, a first bearing, and a second bearing. The rolling lead screw includes a central screw rod and a screw nut. The screw nut is fixedly sleeved around the inner peripheral side of the rotor near the front cover. The linear driving mechanism of the present invention can enhance the integration of the rolling lead screw and rotor to reduce the volume space of the linear driving mechanism, meeting the demand for miniaturization.

The utility model discloses a screw pump with an adjustable shaft seal position structure, which relates to the technical field of screw pumps and comprises a driving screw, a shaft elastic retainer ring is arranged on the outer side of the top of the driving screw and clings to the end of an adjusting shaft sleeve, a sealing gland is fixedly connected to the outer side of the driving screw, and the sealing gland is fixedly connected to the outer side of the driving screw. A bearing seat is arranged at the end, close to the front end cover, of the sealing gland, a screw is in threaded connection with the end, away from the front end cover, of the sealing gland, the bearing seat is in threaded connection with the sealing gland through the screw, and a bearing is arranged at the bottom of the end, close to the front end cover, of the driving screw. Wherein an O-shaped sealing ring groove is formed in the outer surface of the bottom of the driving screw rod, an elastic check ring groove for a hole is formed in the outer surface of the top of the driving screw rod, an adjusting shaft sleeve is arranged on the outer side of the driving screw rod, and the technical problems that the sealing replacement process is tedious, only one sealing material can be selected, and many limitations exist are solved.

A ligature-resistant liquid / gel dispenser includes a rear housing with a mounting plane surface for securing the dispenser to a wall. The dispenser has a front cover is rotatably coupled and lockable to the rear housing and has an aperture for receiving a pushbutton actuator, and a dispenser pump assembly including a reservoir for storing the liquid or gel. The dispenser also includes carriage for activating a vertical pump extension of the dispenser pump assembly, so that vertical movement of the carriage activates the pump. The carriage is mechanically coupled to the pushbutton actuator when the cover is in a closed position, and horizontal movement of the pushbutton actuator is translated into the vertical movement of the carriage. The cover may be secured to the rear housing with a locking mechanism and may have an exterior that is curved or inclined downward from an apex to prevent attachment of a ligature.

The invention provides a heavy-load two-shaft parallel robot suitable for longitudinal batch synchronous operation, comprising: a main body module comprising a body, a front cover plate, a rear cover plate and two motors, the front cover plate and the rear cover plate are symmetrically arranged on both sides of the body, and the two motors are symmetrically mounted on the front cover plate; the driving large arm assemblies are symmetrically distributed on the two sides of the body and correspondingly connected with the motor; the transmission shaft assemblies are symmetrically distributed on the two sides of the body and fixedly connected with the driving large arm assembly; the driven large arm assemblies are symmetrically distributed on the two sides of the body and fixedly connected with the transmission shaft assembly; and the two small arm assemblies are connected with the driving large arm assembly and the driven large arm assembly correspondingly, and movable disc assemblies are installed at the tail ends of the small arm assemblies. The effect that the overall structure occupies a smaller ground space is achieved, meanwhile, the problem that a clamp at the tail end of the two-axis parallel robot shakes is solved with low cost, the positioning precision is improved, and the effect of high-speed stable operation under the large-load working condition is achieved.

An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the electric compressor from the discharge volume.

The present disclosure relates to a vehicle front of a motor vehicle (1) comprising a functional unit (21) with a front cover (213) and an upper body panel (20). The upper body panel (20) is arranged above the functional unit (21) such that a front edge (201) of the upper body panel (20) is spaced apart from an upper front edge (214) of the front cover (213). A bracket (30) is attached to an upper housing side of the functional unit (21), the bracket (30) having a lower section (35) extending between the front edge (201) of the upper body panel (20) and the upper front edge (214) of the front cover (213). A first groove (33) is further formed on the lower section (35), into which a first spring (203) formed on the upper body panel (20) engages.The present disclosure further relates to a corresponding bracket and a functional unit for a vehicle front.

The invention relates to the technical field of photovoltaics, and aims to solve the problems of battery piece warping, welding spot failure, appearance scratching, difficulty in high-density packaging and the like in existing BC battery packaging. Therefore, the photovoltaic module is provided, the photovoltaic module is formed by laminating a front cover plate, a front packaging adhesive film, a plurality of battery pieces, a back packaging adhesive film and a back cover plate which are sequentially stacked, the adjacent battery pieces are in lap joint with each other, the front surfaces of the battery pieces are coated with insulating protective films, electric isolation layers are formed at the lap joint parts of the battery pieces, and the back surfaces of the adjacent battery pieces are connected through welding strips. According to the invention, the isolation and appearance protection of the overlapping part are realized through the front insulating protective film, and the effects of reducing the hidden crack risk and improving the power and appearance quality of the module are realized by combining the imbricated overlapping design.