63results about How to "Improve installation reliability" patented technology

This utility model discloses a novel automotive armrest panel, comprising: a panel body, a storage groove in the center of the panel body, limiting grooves on the upper and lower left sides of the storage groove, a strip-shaped limiting groove at the bottom of the limiting groove, positioning plates on both sides of the limiting groove, semi-circular limiting openings on the positioning plates, two sets of strip-shaped limiting openings between the two sets of limiting grooves, a snap-fit ​​fixing opening between the two sets of strip-shaped limiting openings, a downwardly extending square fixing frame on the outer right side of the panel body, and interconnected U-shaped limiting plates on the outer left side, outer upper side, outer lower side of the panel body, and bottom of the square fixing frame, with mounting openings at the bottom of the U-shaped limiting plates. This utility model ensures the rigidity and reliability of the connection between the entire panel assembly and the vehicle body through the U-shaped limiting plates and the mounting openings at the bottom.

The utility model relates to the technical field of railway vehicles, disclose integrated shock absorber mounting seat and train bogie, this integrated shock absorber mounting seat includes riser, fixed plate and support component, the riser is opened with the plug groove and mounting hole, the fixed plate is fixedly plugged in the plug groove, can be fixed relative to the riser under the action of plug groove, and the connection is stable, the fixed plate is opened with the connecting hole, first buckling plate and second buckling plate are located at both sides of fixed plate respectively and are fixedly connected in the edge of riser, first buckling plate is butt joint in the first end surface of fixed plate, second buckling plate is butt joint in the second end surface of fixed plate, further improve the stability of fixed plate relative to the riser connection, not easy to break, and the supporting is strong, realized the integration installation of anti-snake oil pressure shock absorber and two vertical oil pressure shock absorber, compact structure, optimize the installation space to the realization of anti-lateral roll torsion bar through the frame crossbeam can be realized, improve the installation reliability of anti-lateral roll torsion bar.

The utility model relates to a kind of partition washing machines, including big barrel and first small cylinder, second small cylinder installed in frame, the first small cylinder, second small cylinder are arranged side by side on big barrel, further include the connecting piece between first small cylinder and second small cylinder, the first side of the connecting piece is locked with the side of first small cylinder, the second side of the connecting piece is locked with the side of second small cylinder, the middle part of the connecting piece extends downward and constitutes the counterweight of first small cylinder, second small cylinder.The above structure is used, by the gap between first small cylinder and second small cylinder, connecting piece is made into counterweight structure, not only need to be separately produced and installed counterweight structure, and, as the connecting piece itself is more stable and reliable as counterweight, on the basis of simplifying washing machine overall structure, it is convenient to install, further improves installation reliability.

A compact lens antenna includes: a lens dielectric body with a feed cavity thereon and a feed source at least partially disposed within the feed cavity; the lens dielectric body includes multiple nested bodies; the lens dielectric body is configured to achieve electromagnetic wave phase compensation and optimize antenna performance by adjusting the size, thickness, and dielectric material of the multiple nested bodies. The compact lens antenna is smaller, lighter, and has reduced wind resistance, improving the reliability and ease of installation on towers. Furthermore, by changing the shape of the lens dielectric body, adding a compensation medium, or increasing the dielectric constant, the phase of the electromagnetic wave is compensated, thus optimizing antenna performance.

The utility model discloses a high installation stability's cycle instrument belongs to bicycle equipment technical field, and it includes: instrument main part and two supports, two supports set up respectively in the both sides of instrument main part, and the bottom of support is integrally formed with the front arc clamp part and rear arc clamp part, the inside of front arc clamp part is provided with the installation bolt who penetrates, and the inside of rear arc clamp part is provided with the installation nut, the installation nut is screwed on the outside of installation bolt, and the front end of installation bolt is slidably installed with hexagonal plate, and the front side of front arc clamp part is fixedly installed with fixed ring, and the inside of fixed ring is provided with hexagonal hole. The utility model in the installation process, through the clamp part sleeve connection bicycle frame, and combine the locking mechanism of hexagonal plate and fixed ring, use the inside hexagonal wrench to tighten installation bolt, and the spring is pressed automatically reset locking hexagonal plate after, effectively prevent bolt loose, improve the overall installation stability and reliability.

The utility model discloses electric power tower monitoring equipment, belongs to the technical field of electric power tower monitoring, and solves the problems that existing electric power tower monitoring equipment is complex in installation and low in installation reliability. The monitoring equipment comprises a monitoring box body, a supporting mechanism, a fixing mechanism and a solar panel. The solar panel is connected with the top end of the supporting mechanism. The monitoring box body is connected with the supporting mechanism, and the monitoring box body is electrically connected with the solar panel. The fixing mechanism comprises a pull block, a connecting piece, a fixing cushion block and a nut. The pull block is arranged on the side, away from the supporting mechanism, of the tower horizontal angle steel. The upper end and the lower end of the tower horizontal angle steel are each provided with a connecting piece, the first end of each connecting piece is connected with the supporting mechanism, and the second end of each connecting piece penetrates through the pull block and then is connected with a fixing cushion block and screwed with a nut. The installation reliability is high, the installation procedures above the pole tower can be reduced, the connection relation between parts on the pole tower is simplified, and therefore the electric pole tower monitoring equipment is easier and more convenient to install.

The utility model discloses an upward stacking type detachable plant cultivation container which comprises a detachable base pot arranged at the bottom and at least one detachable auxiliary pot which is clamped on the detachable base pot through a plurality of clamping assemblies and is sequentially and upwards stacked and combined. The detachable auxiliary basins are circumferentially and uniformly fixed at the bottom of the detachable auxiliary basin and are clamped with the upper edge of the basin opening of the detachable base basin; when the number of the detachable auxiliary basins is multiple, the detachable auxiliary basins at the upper positions are clamped to the upper edges of the basin openings of the detachable auxiliary basins at the lower positions through the clamping assemblies. The plant cultivation container is designed according to the growth state requirements of plants such as flower candle type rhizomes and monstera deliciosa type climbing plants, the overlaid structure of the base pot and the auxiliary pots is adopted, the plant cultivation container is expanded upwards, vertical growth of the plants is facilitated, attractive scenery is easier to form, the detachable local structural design is adopted, and the plant cultivation container is convenient to use. Installation, expansion, pot replacement and detachment are facilitated, and roots are not clamped or damaged.

The utility model relates to the technical field of elevator guide rails, and discloses an anti-shaking elevator guide rail connecting device which comprises an upper guide rail and a lower guide rail, a connecting mechanism is arranged between the upper guide rail and the lower guide rail, the connecting mechanism is used for connecting the upper guide rail and the lower guide rail, and a mounting mechanism is arranged on the rear side of the connecting mechanism. The mounting mechanism is used for mounting the upper guide rail and the lower guide rail in an elevator shaft, the connecting mechanism comprises a connecting piece, the connecting piece is arranged between the upper guide rail and the lower guide rail, T-shaped grooves are formed in the top and the bottom of the connecting piece, and the bottom end of the upper guide rail is slidably connected into the T-shaped groove in the top end. According to the utility model, the T-shaped groove of the connecting piece is embedded into the I-shaped section of the guide rail in a sliding manner, the connecting rod is inserted into the slot, and the positioning bolt is rotationally propped against the side surface of the guide rail, so that the multi-direction shaking of the guide rail in the horizontal left-right direction, the vertical up-down direction and the front-back direction is limited, and the running stability and safety of an elevator are improved.

The utility model relates to the field of communication, and provides a multimode resonator and a filter. The multi-mode resonator at least has two resonant modes of an HE mode, the multi-mode resonator comprises a resonator shell, a dielectric resonance piece and a grounding plate piece, and the dielectric resonance piece comprises a dielectric main body and at least three dielectric pins connected to the peripheral side of the dielectric main body; the grounding plates are in one-to-one correspondence with the dielectric pins and are connected to the ends, away from the dielectric main body, of the dielectric pins; the dielectric resonance part and the grounding plate parts are arranged in the resonator shell, and the grounding plate parts are connected to the inner wall of the resonator shell in a grounding mode. Based on the structure, the multi-mode resonator can be used for coupling at least two orthogonal high-Q-value resonance modes of the HE mode in a single cavity, and the performance, the space utilization rate, the usability, the applicability and the practicability of the multi-mode resonator can be improved; moreover, compared with the prior art, the installation convenience and the installation reliability of the dielectric resonance piece can be optimized, and the overall assembly convenience and the assembly reliability of the multimode resonator can be improved.

This utility model relates to the field of automotive manufacturing technology and discloses an installation and positioning structure for automotive taillights. It includes an installation housing, a fixed housing fixedly connected to the top of the installation housing, and an installation plate fixedly connected to the top of the installation housing. A sliding groove is provided on the top of the installation housing. This utility model uses a servo motor to drive the operation of a first transmission column, which in turn drives the meshing transmission of a first bevel gear and a second bevel gear, thereby achieving synchronous rotation of the second transmission column. This structural operation is further transformed into the rotation of a rotating disk, ultimately driving a moving block to slide smoothly within a limiting sleeve, allowing the insert block to accurately insert into the interior of the limiting column. This achieves rapid fixing of the taillight without the need for manual adjustment, improving installation efficiency and accuracy. Simultaneously, the cooperation between the guide block and the sliding column ensures stable insertion of the insert block, avoiding problems of insecure fixing due to shaking or errors, and enhancing the installation stability and reliability of the taillight.

The utility model belongs to the technical field of special equipment for ceramic capacitor manufacturing, specifically relates to a winding tension control system and a casting machine for multilayer ceramic capacitor manufacturing. The winding tension control system comprises a feeding roller shaft, a rotating part rotatable around its central shaft and coaxially fixedly connected with the feeding roller shaft, an adjusting belt provided along the outer edge of the rotating part and having a fixed end and a movable end, and a driving part connected to the movable end of the adjusting belt for providing a pushing and pulling force. The wrapping angle of the adjusting belt on the rotating part is less than 360 degrees. The rotating part can rotate synchronously with the feeding roller shaft. The driving part can generate a pushing and pulling force to change the tightness of the adjusting belt on the rotating part, thereby adjusting the rotating speed of the feeding roller shaft to make the tightness of the carrier film appropriate, and the carrier film tightness adjustment can be completed more quickly and conveniently. The casting machine for multilayer ceramic capacitor manufacturing comprises the aforementioned winding tension control system.

The utility model discloses a hoisting type heat recovery fresh air machine which comprises a machine shell, an outdoor air inlet and an outdoor air outlet are formed in the side wall of the machine shell, and a first inserting groove and a second inserting groove are formed in the machine shell. The first inserting groove is located in the inner side of the outdoor air inlet and communicated with the outdoor air inlet. The second inserting groove is positioned on the inner side of the outdoor air outlet and is communicated with the outdoor air outlet; a first filter element and a second filter element are respectively inserted into the first inserting groove and the second inserting groove; outdoor fresh air passes through the outdoor air inlet and the first filter element and then enters the machine shell. And indoor air in the machine shell passes through the second filter element and then is exhausted from the outdoor air outlet. The hoisting type heat recovery fresh air machine can solve the problems that when the filter element of the hoisting type fresh air machine is replaced, the cover plate needs to be dismantled, and operation is inconvenient, and the filter element replacement process is simpler, more convenient and faster.

The utility model provides a kind of low-power MiniLED backlight control system, it is related to LED backlight technical field, including light bar, the both ends of the light bar are provided with connecting head, multiple electric connecting pins are provided in the inside of two connecting heads, multiple installation clamping grooves are set in the upper end of the light bar, multiple lamp holders are clamped in the inside of multiple installation clamping grooves, multiple electrode pieces are provided in the left and right sides of the lower end of multiple installation clamping grooves, multiple control chips are connected to the lower end of the light bar, multiple control chips are respectively located in the lower end of multiple installation clamping grooves, and electrically connected with the two electrode pieces of the lower end of installation clamping groove, and multiple control chips are electrically connected with multiple electric connecting pins of the front and rear sides, the utility model is provided with multiple-pin connecting head in the both ends of light bar, lamp holder is clamped with light bar by installation clamping groove, electrode piece is electrically connected with control chip, so that lamp holder can be individually repaired and replaced, reduce maintenance cost, and support quick assembly and flexible expansion.

The utility model discloses a top-air-out type air conditioner outdoor unit which comprises a machine shell, an outdoor air outlet and an outdoor air inlet are formed in the top and the side portion of the machine shell respectively. The electric control box is connected with the machine shell, a containing cavity is formed in the electric control box, and the electric control box comprises a supporting plate connected to the machine shell; the box body is arranged in the accommodating cavity and is provided with an opening; the electric control board is installed on the box body and provided with a first through hole, the heating module is installed on the electric control board through a supporting frame and penetrates through the open hole, and the heating module or the box body or the supporting frame is provided with a second through hole; the refrigerant heat dissipation component is connected to the supporting plate and abuts against the heating module, and a first mounting hole is formed in the refrigerant heat dissipation component; the first positioning part is arranged on the supporting plate; and the second positioning part is arranged on the box body. According to the invention, the first positioning part is adaptively connected with the second positioning part, so that the first via hole and the second via hole are aligned with the first mounting hole, manual alignment is not needed when the first fastener is used for connection and fixation, and the assembly efficiency is improved.

The utility model relates to a door for a household appliance, which can comprise a door main body arranged in front of a storage space of the household appliance; and a door panel coupled to the door body. The door panel may include a plurality of panels. A camera assembly for acquiring an image of the storage space may be disposed in a door internal space surrounded by the door main body and the door panel. The plurality of panels may include: a front panel constituting the front of the door panel; and a rear surface panel disposed rearward at a distance from the front surface panel. The camera assembly may be disposed at a position other than a region where the front panel and the rear panel face each other. Since the camera device is located outside the path of light reflection between the panels, external light cannot reach the camera device. Accordingly, the camera device can accurately capture only an image of an object disposed inside the home appliance, and can obtain an effect of improving the quality of the captured image by the camera device.

The utility model discloses a controller, which comprises a shell, a light guide concave part is formed on the front surface of the shell, a plurality of cylinder parts are formed on the inner side wall, corresponding to the light guide concave part, of the front surface, and the cylinder parts are communicated with the light guide concave part; the main control board is arranged in the shell, and the main control board is provided with a plurality of indicating lamps used for giving out indications; the light guide assembly comprises a plurality of light guide columns, and when the light guide assembly is installed on the light guide concave part, all the light guide columns penetrate through all the cylinder parts to stretch out and directly face all the indicating lamps; the decorative plate is detachably installed on the front face of the shell and abuts against the light guide assembly in a pressing mode, a plurality of display areas are formed on the decorative plate, and the free end, away from the corresponding indicator lamp, of one light guide column extends into one display area and is used for guiding light emitted by the corresponding indicator lamp to the display area. According to the utility model, the aim of meeting different indication requirements can be fulfilled by only replacing the decorative plate without changing the structure of the shell.

The utility model relates to a lamp function module installation structure and a lamp, the function module installation structure comprises an installation substrate and a function module, and two opposite side walls of a main body of the function module are both provided with elastic buckles extending downwards. A movable gap for the corresponding elastic buckle to elastically swing in the transverse direction is formed between each elastic buckle and the side wall of the main body of the functional module, the bottom of each elastic buckle is further provided with a buckle part protruding in the transverse direction, and a limiting hole is formed in the installation base plate. Each elastic buckle is pressed by external force, swings for a set distance along the transverse direction relative to the main body of the functional module, and then can penetrate through the corresponding limiting hole downwards, and after the external force is released to press each elastic buckle, each elastic buckle is reset to an initial position, so that the buckle part of each elastic buckle is limited below the peripheral edge of the corresponding limiting hole of the mounting substrate. The mounting structure has the advantages that the mounting structure is few in related parts and low in production cost, and a user can more conveniently disassemble and assemble the functional modules.

This utility model relates to the field of ball valve manufacturing technology and discloses a ball valve handle installation mechanism. The mechanism includes a base frame, a bracket fixedly connected to the top end face of the base frame, a pneumatic handle mounted on the top end face of the base frame, a clamping assembly on the top end face of the base frame, and an auxiliary installation assembly on the top end face of the base frame. In this ball valve handle installation mechanism, a hinge block blocks the path of the handle's upward movement, ensuring that the handle will not fall off during installation or under vibration, improving the stability of the auxiliary installation assembly in clamping the handle. A spring pushes a lifting plate to abut against the bottom of the handle, tightly restricting the handle between the lifting plate and the hinge block. This prevents the handle from loosening or wobbling, automatically compensates for gaps, provides a stable feel during operation, and further prevents the handle from loosening under vibration, impact, or repeated operation, resulting in higher installation reliability.

This application relates to an optical fiber loader. It includes: a first mounting mechanism; a second mounting mechanism detachably connected to the first mounting mechanism, the second mounting mechanism having a through hole for threading an optical fiber; a guiding mechanism connected to the second mounting mechanism and used for threading the optical fiber; and a sealing mechanism abutting between the guiding mechanism and the first mounting mechanism, the sealing mechanism having a sealing hole communicating with the through hole and used for threading the optical fiber; wherein, when the first mounting mechanism abuts against the sealing mechanism, the sealing mechanism deforms to reduce the diameter of the sealing hole, thus achieving an interference fit with the optical fiber. This allows the optical fiber to block the sealing hole, effectively preventing bodily fluids from leaking out of the optical fiber loader through the sealing hole, thereby improving the sealing performance of the optical fiber loader.

The utility model discloses a hydraulic quick male joint, a hydraulic quick female joint and a hydraulic quick joint. The hydraulic quick joint comprises a male joint and a female joint, the tail part of the male joint is provided with a thread part, the middle part is convexly provided with an annular sealing baffle, one side of the baffle is provided with a first sealing ring, and a first colored tape is embedded in a peripheral first annular groove; a ball sleeve capable of axially sliding is arranged at the rear end of the female connector, the ball sleeve and a movable outer sleeve are matched with the limiting groove of the male connector in a sealed butt joint mode, and a second colored tape is embedded in a second annular groove in the rear side of the movable outer sleeve. The first color band and the second color band can emit fluorescence in a low-light environment and / or change color when the temperature exceeds a preset threshold value. The connector can provide in-place connection indication, low-light environment identification and positioning and cooling liquid outlet overheating early warning in high-requirement data center and supercomputer center liquid cooling scenes, so that a fault source is accurately positioned, and the installation reliability, the maintenance efficiency and the operation safety of a liquid cooling system are effectively improved.

The utility model relates to a two-wheeled electric vehicle handlebar sleeve assembling mechanism which comprises an assembling table, and the assembling table is provided with a positioning assembly used for conducting multi-point limiting on a handlebar to be assembled and a guiding assembly arranged at the assembling end of the handlebar to be assembled. The guide assembly comprises a guide block located on the assembly table and a guide pipe penetrating through the guide block, the handlebar sleeve is arranged in the guide pipe and pushed to the handlebar, and the pushing air cylinder is arranged on the side, away from the handlebar, of the guide assembly and applies pushing force to the handlebar sleeve. The method has the core advantages that the mounting efficiency and reliability are improved, and the labor intensity is reduced. In the installation process, due to the fact that the guide assembly is used, the assembly precision is further improved through the supporting function and the guiding function of the guide assembly, and the precision deviation possibly existing in the stress process is reduced.

The application relates to the technical field of device support devices, and discloses a folding support leg capable of being quickly unfolded and fixed, which comprises a mounting pipe, a first support leg, a second support leg and a support foot sole; the first support leg, the second support leg and the support foot sole can be folded and stored in the cavity of the mounting pipe; a third rotating shaft is rotatably arranged on the first support leg; a first connecting piece is threadedly arranged on the third rotating shaft; a fourth rotating shaft is rotatably arranged on the second support leg; a second connecting piece is fixedly arranged on the fourth rotating shaft; the first connecting piece and the second connecting piece can be threadedly locked; and when the first connecting piece and the second connecting piece are locked, the second support leg and the first support leg are locked and cannot be folded and rotated relative to each other. The application can effectively avoid height deviation during the unfolding and mounting process, thereby effectively improving the mounting reliability and stability of the device under the conditions of bumping and rocking, and the connection is reliable, the support is stable, and the operation is simple and convenient.

The utility model discloses a sinking plate type FAKRA connector, and relates to the field of connectors, the sinking plate type FAKRA connector comprises a center pin, a medium body installed on the center pin, an outer conductor installed on the medium body and a plastic shell installed on the outer conductor, the inner wall of the outer conductor and the outer wall of the medium body form a first clamping position, and the inner wall of the outer conductor and the outer wall of the medium body form a second clamping position. The inner wall of the medium body and the center pin form a second clamping position, and the outer wall of the medium body and the inner wall of the outer conductor form a third clamping position. The connecting structure has the effects of enhancing the connecting stability and reliability and improving the convenience and rapidness of overall assembly.

An umbrella-shaped sealing element mounting and fixing device for a miniature water pump comprises a case, an umbrella-shaped sealing element and an umbrella-shaped sealing element, the fixed seat is fixed on a bottom plate in the case through a bolt; the lifting air cylinder is vertically installed on the side wall of the fixing base, and a flange connecting structure is arranged at the end of a cylinder body of the lifting air cylinder; the lifting frame is rigidly connected with the tail end of a piston rod of the lifting air cylinder through a connecting plate, and a through hole is formed in the transverse middle of the lifting frame; the three splicing air cylinders are circumferentially distributed at 120 degrees, and each air cylinder is fixed to the periphery of the lifting frame through an L-shaped support; the three wedge-shaped splicing blocks are fixedly connected with the tail ends of piston rods of the splicing air cylinders correspondingly, and complementary semi-conical holes are formed in the splicing faces of the splicing blocks; the three conical holes are distributed at intervals of 120 degrees, and the depth of the conical holes is smaller than the height of the umbrella nails, so that guiding is formed when the umbrella nails are installed, it is guaranteed that the sealing piece is kept stable in the installation process, inclination or falling is avoided, and the installation reliability is improved.

This application relates to the field of circuit breaker technology, and more particularly to a primary and secondary integrated pole-mounted circuit breaker, comprising: a circuit breaker body, on which at least one limiting rod is connected; multiple fixing posts, the fixing posts being perpendicularly connected to the circuit breaker body, and a locking bar being rotatably connected to each fixing post, the rotation axis of the locking bar being coaxial with the fixing post; a hollow locking box, the top wall of which has multiple strip grooves, the locking bar passing through the strip grooves and rotating to abut against the top wall of the inner cavity of the locking box, and the locking box having at least one limiting hole for the limiting rod to pass through; and a driving unit for driving the locking bar to rotate, the driving unit being connected to the locking box and the fixing posts; this application has the effect of reducing the possibility of the fixed structure being eroded by rainwater, thereby improving the installation reliability of the circuit breaker.

The utility model relates to a detachable vertical and horizontal shear upper shearing mechanism and a vertical and horizontal shearing machine thereof, and the detachable vertical and horizontal shear upper shearing mechanism comprises an upper tool apron, an upper vertical shear tool apron, a rear buckle plate and a front buckle plate; a concave tool apron mounting groove is formed in the middle of the bottom surface of the upper tool apron; a front bottom plate is fixed on the front side of the tool apron mounting groove and at the bottom of the upper tool apron; a rear catching groove is formed in the rear side of the tool apron mounting groove; the upper longitudinal shear base is detachably mounted in the middle of the bottom of the upper cutter base; the front side of the cutter holder mounting surface of the upper longitudinal shear holder protrudes to form a front buckling block; the rear side of the tool apron mounting surface of the upper tool apron is sunken to form a rear catching groove; the upper sides and the lower sides of the inner sides of the rear buckle plate and the front buckle plate protrude inwards to form buckle strips respectively. The longitudinal and transverse shearing machine comprises a shearing machine frame, and the detachable longitudinal and transverse shearing upper shearing mechanism capable of vertically ascending and descending is arranged on the upper portion of the shearing machine frame. The rear pinch plate and the front pinch plate are used for fastening and fixing, so that the mounting reliability of the upper longitudinal shear seat is improved.

The utility model discloses an air compressor with an exhaust pipeline reinforcing structure, which comprises an air storage tank, the top of the air storage tank is communicated with an exhaust pipe, one end of the exhaust pipe far away from the air storage tank is communicated with a compressor host, the compressor host is communicated with an air path of the air storage tank through the exhaust pipe, the top of the air storage tank is provided with a motor, and the motor is connected with the air storage tank. The motor is adjacent to the compressor main machine and is in transmission connection with the compressor main machine through a transmission belt, the bottom of the surface of the air storage tank is sleeved with an inner sleeve, the surface of the inner sleeve is sleeved with a buffering sleeve, and the bottom of the inner sleeve and the bottom of the buffering sleeve are both attached to the top of the air storage tank. And the bottom of the surface of the buffer sleeve is fixedly connected with an upper hoop. The inner sleeve, the positioning ring and the locking nut are used in cooperation, so that the inner sleeve is stably arranged on the surface of the exhaust pipe in a sleeving mode, and then the phenomenon that the connecting position between the gas storage tank and the exhaust pipe is loosened is avoided.

The invention discloses an electric energy meter live and null line positive and negative connection detection system and method based on a PCB capacitor, and the system employs a coupling capacitor formed by reference ground laying copper and the ground to construct a signal backflow path, and outputs high and low level signals in combination with the conduction state change of a triode of a signal processing circuit. Signal isolation transmission is realized through an optocoupler device of the isolation circuit, and finally the MCU judges the connection state of the live line and the null line, thereby effectively detecting the reverse connection state of the live line and the null line of the electric energy meter, avoiding the fire hazard of electric appliances caused by manual missing detection, improving the safety performance of the circuit, and greatly facilitating the application and maintenance of the intelligent electric meter.

This invention relates to the fields of power control and electric vehicles, and discloses an excitation protection device, including a housing, an excitation source disposed within the housing, a piston, and a conductive plate. The piston, driven by the excitation source, can disconnect the conductive plate. The piston is integrally formed with the housing, and after separating from the housing under the drive of the excitation source, it can disconnect the conductive plate. The excitation protection device of this invention, with the piston and housing integrally formed, reduces the number of parts, simplifies the assembly process, improves assembly efficiency, reduces production costs, avoids the risk of missing pistons, improves product yield, and enhances the reliability of circuit protection.

This utility model discloses a cutting tool, comprising: a tool body with a clamping opening and multiple clamping surfaces within the clamping opening; and a cutting blade clamped at the clamping opening, the cutting blade having clamping mating surfaces corresponding one-to-one with the multiple clamping surfaces, one of the clamping surfaces being a clamping convex surface and the other a clamping concave surface, and the cutting blade having a cutting portion extending beyond the clamping opening; wherein the clamping opening is constructed to extend upwards along the feed direction, and the cutting blade is clamped upwards along the feed direction within the clamping opening. The cutting tool of this utility model, with multiple clamping convex surfaces and multiple clamping concave surfaces corresponding one-to-one, improves the installation reliability of the cutting blade and the clamping opening. Furthermore, the upward-sloping installation of the cutting blade within the clamping opening further enhances the installation reliability of the cutting blade within the clamping opening, and also improves the stability and reliability of the cutting blade during machining, thereby improving machining accuracy.