60results about How to "Simplify processing difficulty" patented technology

The invention relates to the technical field of semiconductor manufacturing, in particular to a light-emitting diode which comprises an epitaxial laminated layer, a dielectric layer, a metal reflecting layer, a substrate and an oxidation protection layer, the epitaxial laminated layer sequentially comprises a first semiconductor layer, a light-emitting layer and a second semiconductor layer in the direction from the upper surface to the lower surface, the dielectric layer is arranged on the lower surface of the epitaxial laminated layer, and the metal reflecting layer is arranged on the metal reflecting layer. The dielectric layer is provided with a plurality of through holes, the metal reflecting layer is arranged on one side, far away from the epitaxial laminated layer, of the dielectric layer and is electrically connected with the epitaxial laminated layer through the through holes, the substrate is arranged on one side, far away from the epitaxial laminated layer, of the metal reflecting layer, and the oxidation protection layer wraps the side wall of the metal reflecting layer. By means of the arrangement, the metal migration phenomenon of the metal reflecting layer can be effectively avoided, the electric leakage phenomenon of the light-emitting diode is avoided, and the quality of the light-emitting diode is improved.

The embodiment of the utility model provides an anti-explosion valve, a battery box, a battery and an electric device, the anti-explosion valve is provided with a first side and a second side which are opposite along a first direction, and the anti-explosion valve comprises a valve body and a switch assembly with a ventilation channel. The first side of the valve body is provided with a mounting groove and a mounting channel. The switch assembly comprises a switch piece, a piston and an ejector rod. And the piston is arranged in the mounting groove. The ejector rod is provided with a connecting channel, and a connecting port and an exhaust hole located in the first side and the second side of the connecting channel. The connecting channel forms a part of the ventilation channel. The end, provided with the connecting port, of the ejector rod is connected with the piston and arranged in the mounting channel in a sliding mode. And the switch piece is arranged in the connecting channel through the connecting port. And the switch piece is used for generating elastic deformation under the action of air pressure so as to move from a closing position for closing the connecting channel to an opening position for opening the connecting channel. And the switch piece is also used for resetting from the opening position to the closing position under the action of self elasticity. The production efficiency can be improved, and the manufacturing cost is reduced.

The invention discloses a special-shaped structure heat-proof layer forming method, and belongs to the technical field of composite material forming. The forming method of the heat-proof layer with the special-shaped structure comprises the following steps: preparing an edge heat-proof layer blank body; prepreg is prepared, and the prepreg is laid on a sewing tool layer by layer; a plurality of layers of the prepreg close to the outer molded surface are sewn in a penetrating mode and jointed, the jointed follows the hole position of the penetrating sewing, and a large-area heat-proof layer laying layer set is obtained; embedding the edge heat-proof layer blank into the large-area heat-proof layer laying layer group to obtain a heat-proof layer blank; and carrying out pre-pressing and curing treatment on the heat-proof layer blank body to obtain the heat-proof layer with the special-shaped structure.

The invention relates to the field of fuel cells, in particular to a bipolar plate-gas diffusion layer structural body and a fuel cell. The structural body comprises a bipolar plate and a gas diffusion layer; the bipolar plate is composed of a first polar plate, a third polar plate and a second polar plate which are stacked in sequence, the first polar plate is a flat plate, the second polar plate is a flat plate with a lug boss, and the third polar plate is a polar plate with a runner; the first polar plate is connected with the anode gas diffusion layer; the second polar plate is connected with the cathode gas diffusion layer; grooves are formed in one side, close to the first polar plate, of the anode gas diffusion layer and one side, close to the second polar plate, of the cathode gas diffusion layer; the convex part of the second polar plate is embedded into the groove of the cathode gas diffusion layer; and a cavity formed by the second polar plate and the cathode gas diffusion layer is an air flow channel. The oxygen content under the ridge of the fuel cell can be improved, the drainage capacity under the ridge is enhanced, the power density of the fuel cell is improved, and the specific power of a fuel cell stack can be greatly improved.

The invention discloses a translational photon optical shutter device capable of being combined with multiple inserts, and the device is characterized in that the device comprises an optical shutter switching assembly, a vacuum chamber, a driving mechanism, and a hinge assembly; the optical shutter switching assembly and the hinge assembly are installed in the vacuum chamber, and the driving mechanism is located outside the vacuum chamber. The driving mechanism drives the optical shutter switching assembly to do reciprocating translation through the hinge assembly and is used for switching control over light passing and light blocking of synchrotron radiation light. An absorber is arranged in the optical shutter switching assembly, the top of the absorber is a light receiving face, and the light receiving face comprises a plurality of inclined faces which are obliquely upward in the incidence direction of synchrotron radiation light and used for blocking the synchrotron radiation light generated by various insertion pieces at the same time. The design of the multi-inclined-plane absorber can block synchrotron radiation light generated by various inserts at the same time, so that the valuable axial space occupied by the device in a light beam line is effectively shortened, and a solid technical basis is provided for the design and layout optimization of the light beam line combined by multiple inserts.

The invention provides a composite material repairing method and a repairing structure. The composite material repairing method comprises the steps that a damaged area on a composite material is polished to remove damaged original fiber layers to form a repairing area, and the sections of the multiple original fiber layers exposed out of the edge of the repairing area form a lap joint area; a first fiber repairing layer is laid in the repairing area and the lap joint area, so that the two ends of the first fiber repairing layer obliquely and upwards extend to the topmost original fiber layer of the lap joint area correspondingly and are in lap joint with the topmost original fiber layer; sequentially laying a plurality of fiber repairing layers on the first fiber repairing layer until the number of the laid fiber repairing layers is the same as that of the polished original fiber layers; the topmost fiber repairing layer and the topmost original fiber layer are coated with adhesive surface layers, protective layers are laid on the adhesive surface layers, and the protective layers cover the fiber repairing layers and the original fiber layers; and putting the repaired composite material into an autoclave for curing. The problems that in the prior art, a repairing method is complex in process and low in efficiency are solved.

The invention relates to the technical field of beverage cups, in particular to a beverage cup achieving the bottom heat conduction effect through a composite material and a manufacturing process thereof. Comprising a cup body, the cup body is provided with a soft temperature-resistant body, a hard supporting body and a hard transition body, the soft temperature-resistant body is of a cup-shaped container structure with an opening, the hard transition body and the hard supporting body are both of a sleeve-shaped structure, the hard transition body is bonded to the outer side of the soft temperature-resistant body, the upper end of the hard transition body is aligned with the opening of the soft temperature-resistant body, and the lower end of the hard transition body is aligned with the opening of the soft temperature-resistant body. The lower end of the hard transition body is higher than the soft temperature-resistant body, the hard supporting body is arranged on the outer side of the hard transition body in a sleeving mode, a fixing structure is arranged between the hard supporting body and the hard transition body, and the hard transition body and the hard supporting body are fixedly matched through the fixing structure; the bottom surface of the soft temperature-resistant body can be in close contact with the heating film, so that the heat conduction effect of the bottom of the cup body is improved, and the heating film can efficiently transfer heat to a beverage in the cup body.

The application discloses an antenna combiner, comprising: a plurality of high-frequency resonators, the plurality of high-frequency resonators are arranged side by side along a first direction, each resonator extends along a second direction, and comprises a high-resistance wire and a low-resistance wire distributed along the second direction, wherein the high-resistance wire of two high-frequency resonators has a mounting hole; a flying rod assembly, comprising a capacitive flying rod and a heat shrink sleeve, the capacitive flying rod has two flying rod pins, the two flying rod pins of the capacitive flying rod are sleeved with the heat shrink sleeves respectively, and the two flying rod pins of the flying rod assembly are respectively inserted into the mounting holes on the two high-resistance wires; a flying rod support, the flying rod support is fixed on the high-resistance wire between the two high-resistance wires with the mounting holes, and the capacitive flying rod is supported on the flying rod support. The application adopts the mode of the heat shrink sleeve and the flying rod support to replace the mode of the originally adopted supporting gasket and flying rod sheet, improves the overall stability of the antenna combiner, and greatly simplifies the installation steps and processing difficulty.

The utility model discloses an electric tool and a motor. The electric tool includes: a functional member; the motor drives the functional part to work; the power supply device at least supplies power to the motor; the motor comprises a stator assembly, and the stator assembly comprises a stator core and a multi-phase winding. The stator iron core is provided with a plurality of teeth on which wires can be wound, each multi-phase winding comprises a plurality of coils, and each coil is composed of a plurality of wires which are wound on the same tooth in parallel; the at least two coils belonging to the in-phase winding are wound on the adjacent teeth, and the coil turns of the at least two coils belonging to the in-phase winding are different; the number of turns of the coil is the number of turns of a plurality of wires wound on the same tooth in parallel.

The utility model provides a fixing seat and a camera module comprising the fixing seat, the fixing seat comprises a main body, the main body is provided with a mounting hole and a vent hole, the mounting hole penetrates through the main body and is used for mounting a lens assembly, the vent hole penetrates through the side wall of the mounting hole to communicate the inside and the outside of the mounting hole, and the vent hole comprises a first vent hole, a second vent hole and a third vent hole which are coaxially arranged, the first air hole communicates with the mounting hole, the third air hole communicates with the outside of the mounting hole, the inner diameter of the third air hole is larger than that of the first air hole, the two ends of the second air hole communicate with the first air hole and the third air hole correspondingly, and the inner diameter of the second air hole is gradually increased in the direction from the first air hole to the third air hole. In the fixing seat, the first air hole, the second air hole and the third air hole are coaxially arranged and are of the stepped structure, so that the processing difficulty of the vent hole is simplified, the manufacturing cost of the fixing seat is reduced, and external sundries can be prevented from entering the mounting hole, so that the external sundries are prevented from being adhered to the lens assembly in the mounting hole.

The utility model relates to the technical field of conducting rods, and discloses an outdoor high-voltage vacuum circuit breaker conducting rod, which comprises a rod body fixedly arranged in an outdoor high-voltage vacuum circuit breaker, and is characterized in that the rod body comprises a first rod piece, one end of the first rod piece is fixedly provided with a first external thread for installation, and the other end of the first rod piece is provided with a second external thread for installation; a second rod piece is fixedly connected to the other end of the first rod piece, second external threads are fixedly arranged on the second rod piece, and a third rod piece used for installation is fixedly arranged at one end of the second rod piece. According to the outdoor high-voltage vacuum circuit breaker conducting rod, the outer side of the conducting rod is provided with a plurality of external thread structures which are used for being connected and installed in the outdoor high-voltage vacuum circuit breaker, the actual installation process is simple in operation, the locking effect is good, the overall structure is smooth, production simplification is facilitated, and production efficiency is improved; and the traditional notch design on the conducting rod is eliminated, so that the processing difficulty is simplified, burrs on the conducting rod are avoided, the use safety of the conducting rod is improved, and the partial discharge problem of conduction is reduced.

The utility model relates to the technical field of keyboards, in particular to an anti-skid keyboard armrest upper cover structure which comprises an upper cover body, a wear-resistant surface layer wrapped on the upper cover body and a filling layer filled between the upper cover body and the wear-resistant surface layer, and hot melt adhesive layers with the thickness of 1-2mm are arranged between the upper surface and the lower surface of the filling layer. And the hot melt adhesive layer covers the whole upper surface of the upper cover body and the whole inner surface of the wear-resistant surface layer. The soft coating layer is bonded on the base material layer by adopting a hot-pressing process of hot melt adhesive, so that the bonding process and the assembly difficulty of the soft coating layer are greatly simplified, and the advantages of convenience in automatic bonding, firmness and reliability in bonding and high assembly efficiency are achieved; the problems of dislocation, wrinkling and influence on the comfort of the wrist due to the fact that the middle of the soft coating layer and the base material layer are not fixed are effectively prevented, the wrist is effectively prevented from sliding, and the use experience is obviously improved.

The utility model discloses a kind of half-ring handles, relate to packaging container technical field.A kind of half-ring handle, comprising: circular ring component and two handle components connected on circular ring component;The side of the inner ring of circular ring component is fixedly connected with several first cards in circular array arrangement;First card is inclined to the inside of circular ring component and is set upwards;The both sides of circular ring component are each fixedly connected with one fixed seat, and two connecting holes are opened in fixed seat;Handle component includes handle and the pulling arm fixed in the both sides of handle;The inside of pulling arm end is fixed with one fixed shaft, and the end of fixed shaft is fixedly connected with several second cards in circular array arrangement;The free end of second card is inclined to the outside of fixed shaft and sets up. The utility model, by the cooperation of each structure innovation, effectively solve the problem that finger is tight and uncomfortable when using traditional handle, improve the comfort of user holding.

An automobile steering knuckle with a self-lubricating mechanism comprises a steering knuckle body and the self-lubricating mechanism mounted on the steering knuckle body, a center mounting hole and a lubricating through hole are formed in the steering knuckle body, the center mounting hole is used for mounting a rotating shaft of a vehicle, the lubricating through hole is communicated with the center mounting hole, and the self-lubricating mechanism is connected with the lubricating through hole. In order to facilitate the self-lubricating mechanism to lubricate the neutral mounting hole, a pushing and pressing piece is arranged in the self-lubricating mechanism, and lubricating grease in the self-lubricating mechanism is conveyed into the central mounting hole through the pushing and pressing piece, so that the lubricating grease can conveniently lubricate the central mounting hole.

The present invention discloses a coil and an assembly method. A coil includes a coil body, an upper end hoop, a lower end hoop and an inner support plate. The upper end hoop and the lower end hoop constitute a first axial tensioning structure, and the inner support plate is used to tension the inner circumference of the coil body and form a heat dissipation channel. An assembly method for the coil includes the following steps: the coil body is wound; the inner support plate is placed in the middle of the inner circumference of the coil body; the upper end hoop and the lower end hoop are respectively fixed to the upper end and the lower end of the coil body; wherein the upper end hoop and the lower end hoop are respectively provided with a second radial tensioning structure for tensioning the long side of the coil body. Based on this, both axial tensioning force and radial tensioning force are provided, and the inner support plate is cooperated to fully support the coil body, effectively solving the noise and temperature rise problems.

The invention provides a substrate preparation method and a photovoltaic cell. The substrate preparation method is used for preparing a substrate with a pyramid structure. The preparation method comprises the following steps: providing a substrate, wherein the substrate has two opposite sides; forming a first adjustment layer on at least one side of the substrate; forming a second adjusting layer with a preset thickness on one side, deviating from the substrate, of the first adjusting layer; the second adjusting layer is provided with a plurality of through holes penetrating through the second adjusting layer in the thickness direction; performing first type etching on the first adjusting layer by taking the second adjusting layer as a mask, removing a part of the first adjusting layer exposed by the through hole and forming an opening pattern with a preset width value; performing second type etching on the second adjusting layer and a part of the substrate exposed by the opening pattern to obtain a pyramid structure on the substrate; and removing the residual first adjusting layer, wherein the residual substrate and the pyramid structure jointly form a substrate. By using the method, the process difficulty is effectively simplified and the preparation cost is reduced while relatively high regulation and control precision of pyramid structure morphology parameters is obtained.

The utility model provides an adjusting and positioning mechanism and a seat. The adjusting and positioning mechanism comprises an inner fixing piece, an outer rotating ring, a positioning piece and a linkage mechanism arranged between the positioning piece and the outer rotating ring, the outer rotating ring is arranged on the inner fixing piece with the fixed teeth in a sleeving mode to form rotating connection, the positioning piece matched with the fixed teeth on the outer wall of the inner fixing piece in a tooth connection mode is arranged between the outer rotating ring and the inner fixing piece, and then the linkage structure between the positioning piece and the outer rotating ring is used for enabling the movable teeth and the fixed teeth on the positioning piece to form the circulating type positioning and separating effect. The whole design structure is compact, the occupied space is small, and the adjusting and positioning process is simple and convenient; the seat comprises a seat body and handrails arranged on the two sides of the seat body, the adjusting and positioning mechanism is arranged on the seat body, the outer rotating ring is connected with the rear ends of the handrails, and free adjustment of the deflection angle of the handrails can be achieved without emptying the interiors of the handrails.

The present invention provides an intelligent insulator replacement auxiliary device, which relates to the technical field of power equipment installation, including a threaded sleeve, a bottom cylinder, a top cylinder, a limit ring, an insulating telescopic part, a square rod, a lifting platform, a threaded rod and a lower wire head structure. The present invention can prevent operators from climbing back and forth on the pole, especially when replacing insulators on a single cement pole. The personnel on the top can manipulate the annular wheel on the top cylinder to loosen the limit ring, and the user can rotate and adjust the position of the lower wire head structure. The personnel on the ground assist in rotating the hand crank to drive the threaded rod to rotate, thereby lifting the square rod, the insulating telescopic part, the lifting platform, and the lower wire head structure upward. In this process, the ground operator can also perform auxiliary observation based on the image information obtained by the camera assembly. The operator on the cement pole does not need to climb back and forth, ensuring the safety of the insulator replacement process.

The embodiment of the invention provides a silicon carbide substrate manufacturing method and a silicon carbide substrate manufacturing tool, and the silicon carbide substrate manufacturing method comprises the steps: machining a groove in the side surface of a graphite substrate; surrounding the side surface of the graphite base body with the isolation baffle sheet; the fixing tool is arranged on the outer side of the isolation blocking piece in a surrounding mode; a bulge matched with the groove is arranged on the inner side surface of the fixing tool; the bulge is inserted into the groove to press the isolation baffle on the graphite substrate; growing silicon carbide on the upper surface and the lower surface of the graphite substrate which is surrounded by the isolation separation blade and the fixing tool; after the growth of the silicon carbide is finished, removing the fixing tool and the isolation baffle on the side surface of the graphite substrate; and removing the graphite matrix to obtain two silicon carbide substrates. According to the silicon carbide substrate manufacturing method and the silicon carbide substrate manufacturing tool provided by the embodiment of the invention, the process difficulty is simplified, the production time is shortened, and the production cost is also greatly reduced.

This invention discloses a construction process for controlling the deformation of multi-curved irregular-shaped aluminum panels. The first pre-assembly ensures the aluminum panel processing accuracy meets requirements; the second pre-assembly controls the deformation and angular deviation of the assembled aluminum panel units; and the third pre-assembly ensures the qualified connection between multiple aluminum panel units. These three pre-assembly processes ensure the processing accuracy of the aluminum panels and guarantee a high rate of qualified aluminum panels leaving the factory. A shaping plate serves as a benchmark for controlling interface dimensions, allowing for timely detection of deformation in aluminum panel units. The shaping plate also reduces deformation during subsequent processes. During the spraying process, when the aluminum panel is suspended on one side, it will not deform due to its own weight. Under spraying and baking conditions, the deformation of the aluminum panel is also greatly reduced. Through the combined effect of the three pre-assembly processes and the shaping plate, the final finished aluminum panel can achieve the preset shape.

The invention discloses a tab connection method of a lithium-containing negative electrode and the lithium-containing negative electrode, and solves the problem that a conventional welding method is difficult to connect a pole piece and a tab due to the fact that the lithium-containing negative electrode is soft in texture, active in chemical property and low in melting point. According to the method, tab connection with high mechanical strength and low contact resistance can be provided. The battery assembled by the pole piece prepared by the method has lower battery internal resistance, solves the problems of poor tab connection and shedding caused by volume change in the cycle process, can effectively improve the cycle performance, the service life and the safety of the lithium battery, and realizes long-term stable cycle of the lithium battery.

The invention relates to the technical field of optical fiber sensing, in particular to a two-parameter measurement optical fiber sensor and a manufacturing method thereof. The two-parameter measurement optical fiber sensor comprises an optical fiber and a sensing unit arranged at one end of the optical fiber. The sensing unit is formed by sequentially arranging a Bragg reflector and a noble metal nano-film, the noble metal nano-film is provided with nano-structure units arranged in an array, and the sensing unit can excite two resonant modes, so that the refractive index variation and the temperature variation of an external medium initiate resonant wavelength movement of the two resonant modes, and the refractive index variation and the temperature variation of the external medium are changed. And simultaneous measurement of the refractive index and the temperature of an external medium is realized. By improving the metal nano-film, two resonance modes are excited, the detection sensitivity is improved, meanwhile, the machining difficulty can be simplified, the structural stability can be improved, and accurate decoupling measurement of the refractive index and the temperature is achieved.

The present application discloses a cylinder structure and an angle valve device. The cylinder structure includes a cylinder body, a first actuator, a second actuator and a locking member. Both the first actuator and the second actuator can slide relative to the cylinder body. In the first actuator, the first piston divides the accommodating cavity of the cylinder body into a first air cavity and a second air cavity. The first piston can drive the first valve stem to slide to change the volume of the first air cavity and the second air cavity. The first piston has a mounting groove. In the second actuator, the second piston and the groove wall of the mounting groove enclose a third air cavity. The second piston can drive the second valve stem to slide to change the volume of the third air cavity. The first piston is provided with a connecting hole connecting the first air cavity and the third air cavity. The locking member can move relative to the cylinder body to achieve locking and unlocking of the cylinder body with the first actuator or the second actuator. This embodiment simplifies the processing difficulty of the cylinder structure by changing the air intake path of the cylinder structure.

This invention relates to a transverse linear motor structure, comprising a lower housing, an upper housing, a weight component, and spring contacts. The weight component includes a magnetic groove assembly, which comprises a mass block, a first magnetic guide plate, and a second magnetic guide plate. Mass blocks are symmetrically fixed to both sides of the second magnetic guide plate, forming a rectangular magnetic groove structure with an open bottom. Magnets are fixed within this magnetic groove. The first magnetic guide plate is welded to the upper surface of both the mass block and the second magnetic guide plate. Spring contacts are connected to the sidewalls of the mass blocks on both sides of the weight component to form oscillators. The weight component is connected to the upper housing via these spring contacts, and the upper and lower housings cooperate to form a closed cavity. This invention, through the rectangular magnetic groove structure of the magnetic groove assembly, the optimization of the spring contact structure, and the inclusion of cushioning foam, effectively shields magnetic leakage in all directions, improving the lifespan of the spring contacts and the mechanical reliability of the product.

The present invention discloses a biomass fixed bed poly-generation system, which comprises: a biomass gasification device in which carbon-containing biomass is gasified to form a synthesis gas containing CH4, CO, CO2 and H2; a gas phase outlet of the biomass gasification device is connected with a gas inlet pipeline of the methanol production device, and the synthesis gas is subjected to a synthesis reaction in the methanol production device to produce refined methanol and methanol residual liquid; the invention further discloses a working method of the biomass fixed bed poly-generation system, purge gas generated by the methanol synthesis device is used as fuel for power generation, the purge gas is used as fuel gas of the fuel gas power generation device, hot steam generated by the fuel gas power generation device is used for heating methanol residual liquid, and the fuel gas power generation device is used for generating fuel gas generated by the fuel gas power generation device. The residual methanol liquid is used as a gasifying agent to participate in biomass gasification reaction, so that system energy consumption and resource waste during preparation of methanol from biomass are reduced.

This utility model relates to a lifting device, and more particularly to a six-guide-column lifting device, comprising a base plate, a first lifting plate, a fixed plate, and a second lifting plate, and further comprising a driving component, a lead screw and nut assembly, guide columns, and guide sleeves. The driving component is fixed to the base plate and drives the lead screw and nut assembly. The first lifting plate is driven by the lead screw and nut assembly, and the top end of the lead screw and nut assembly is rotatably connected to the fixed plate. The guide columns include a first guide column and a second guide column, both parallel to the lead screw and nut assembly. The bottom end of the first guide column is fixed to the base plate, and the top end of the second guide column is fixed to the first lifting plate, and the top end is fixed to the second lifting plate. The technical solution of this utility model uses three guide columns as the main power guide for the driving component to drive the lead screw and nut assembly, and the other three guide columns as the driven guides for the lifting device, effectively increasing the stability of the overall structure while simplifying the overall cost and processing difficulty.

An electron detector comprises a light guide and a scintillator. Wherein the light guide is provided with a front end part, the surface of the front end part comprises a first surface of a quarter spherical surface structure and a second surface of a plane structure, and the surface of the scintillator comprises a light emergent surface and an electron incident surface which are opposite to each other; the light emitting surface is attached to the second surface, so that a light signal generated by the scintillator enters the front end part, and the first surface reflects the light signal. The first surface of the spherical structure is used as a reflecting surface for reflecting an optical signal in the light guide for the first time, so that the incident angle of the next reflection of the reflected light can be effectively controlled, and support is provided for ensuring that the optical signal can be totally reflected in the light guide; the purposes of reducing light loss and improving transmission efficiency by increasing total reflection in the light guide process are achieved; meanwhile, the front end part adopts a spherical surface structure, so that the processing difficulty of the light guide is simplified, and the optimal light transmission efficiency can be obtained by adjusting and determining the position of the scintillator at the front end part.

The present invention provides a balancing shaft rotation measurement connection device based on the inherent structure of an engine housing, comprising a rotating shaft mechanism, a connecting shaft sleeve and a U-shaped bracket, wherein the rotating shaft mechanism is connected to the shaft hole of an engine oil pan through the connecting shaft sleeve, and one end extends to the inside of the engine oil pan to be connected to a balancing block fixing bolt fixed on the balancing shaft, and the other end extends to the outside of the engine oil pan to be connected to the rotating shaft of a balancing shaft rotation parameter measurement device; the U-shaped bracket is supported below the rotating shaft mechanism outside the engine oil pan, and a connecting portion matching the inherent connecting hole outside the engine oil pan is provided on the side of the U-shaped bracket close to the engine oil pan. The connection is achieved by designing a special U-shaped bracket structure based on the position of the inherent connecting hole on the engine oil pan, thereby reducing damage to the housing and the influence on the measurement result, and the design of the hole, shaft and surface takes the draft angle into consideration, thereby ensuring the accuracy of the output of the balancing shaft rotation parameter.

The utility model relates to the technical field of keyboards, in particular to a high comfort curved surface keyboard, which comprises a bottom shell, an armrest pad and a key seat, the armrest pad comprises a hand supporting area and an extension area, the thickness of the front edge of the hand supporting area is equal to that of the rear edge of a main key area, and the thicknesses from the left edge, the right edge and the rear edge of the hand supporting area to the front edge are gradually increased. The armrest pad comprises a base material layer connected with the bottom shell in a folding manner and a soft coating layer covering the base material layer, so that the comfort of placing the wrist is effectively achieved, the use habit that the two hands of a user operate within the range of the main keyboard area for a long time is met, and the comfort is high. The soft coating layer is bonded on the base material layer by adopting a hot-pressing process of hot melt adhesive, so that the bonding process and the assembly difficulty of the soft coating layer are greatly simplified, the problems that the middle part of the soft coating layer and the base material layer are not fixed so as to cause dislocation and wrinkles and influence the comfort of the wrist are effectively prevented, the wrist is effectively prevented from sliding, and the service life of the wrist is prolonged. And the use experience is obviously improved.

The invention discloses a metal packaging box which comprises two shells capable of rotating relatively, the two shells comprise the first shell and the second shell, and the metal packaging box has the closed state that the two shells get close to each other to form a closed containing space and the open state that the two shells get away from each other; the hinge comprises a first connecting piece and a second connecting piece which are pivotally connected; the first shell is constructed and formed by a metal sheet and is connected with the first connecting piece in a welding manner; and / or the second shell is constructed and formed by a metal sheet and is connected with the second connecting piece in a welding manner. According to the metal packaging box, the shell and the hinge are designed in a split mode, the corresponding parts are connected in a welded mode, and compared with an integrated forming mode in the prior art, the machining difficulty is simplified, and the cost is reduced.