104results about How to "No noise" patented technology

The invention discloses an AI intelligent control pressure sore prevention self-adaptive mattress system which comprises a mattress body provided with a polymer support column structure covering in all directions and designed into a plurality of areas, and the areas are accurately divided to support a human body and disperse pressure; the sensor array module is used for recording monitoring data of contact between each part of a human body and a plurality of areas of the mattress body in real time; the AI chip control module integrates an advanced algorithm and a processor and is used for receiving and analyzing the monitoring data from the sensor and sending out a control instruction based on an analysis result; and the database management module is used for storing monitoring data of patients with different weights, heights, ages and body positions and is used for predicting and early warning pressure sore risks. According to the invention, pressure sore risk areas can be accurately identified in a zoning manner, pressure, temperature and humidity information can be monitored in real time, and meanwhile, a proper pressure state is automatically adjusted, so that the occurrence of pressure sores is effectively prevented.

The invention provides a charging pile and a charging control method, the charging pile comprises a charging module and a heat dissipation device, one end of the heat dissipation device can be attached to or separated from the charging module, and the other end of the heat dissipation device is communicated with a low-temperature part; the heat dissipation device comprises a magnetic field generator and at least one heat dissipation module. The heat dissipation module comprises a magnetized part and a heat conduction part, the magnetized part and the heat conduction part are sequentially arranged in the direction from the charging module to the low-temperature part, and the magnetized part can move in the direction close to or away from the charging module; the magnetic field generator can provide a magnetic field for the magnetized part in an intermittent mode. According to the charging module, the heat of the charging module can be transferred to the low-temperature part step by step and step by step, heat dissipation of the charging module is achieved, a good heat dissipation effect can be provided, only the magnetized part performs intermittent reciprocating motion in the whole heat transfer process, the magnetic field generator intermittently provides a magnetic field, and unnecessary vibration or noise cannot be generated.

The invention discloses a phase change heat transfer motor stator heat dissipation structure and a design method, and belongs to the technical field of motor heat management, the structure comprises a stator iron core, a copper wire winding and a flattening type phase change heat transfer device, the copper wire winding is arranged on the inner side of the stator iron core, and the flattening type phase change heat transfer device is arranged on the outer side of the stator iron core; the flattening type phase change heat transfer device is arranged in a groove, in contact with the stator core, in the radial interior of the copper wire winding. The invention further discloses a design method of the heat dissipation structure. By adopting the heat dissipation structure and the design method, the thermal control technology of the motor stator winding is researched and developed based on the phase change heat transfer device, and the purposes of greatly reducing the peak temperature of the motor, enhancing the temperature uniformity of the motor and realizing high-overload-multiple safe operation are achieved.

The utility model provides a high-capacity mobile energy storage power distribution vehicle which comprises a second-class chassis, a mute type compartment is arranged on the second-class chassis, and the mute type compartment is sequentially provided with a fire-fighting cabin, a battery cabin, an equipment cabin and a cable cabin. A battery cabinet is arranged in the battery compartment, a battery pack is placed on the battery cabinet, an electric control cabinet, a charging pile and a charging gun are arranged in the equipment compartment, and the charging pile is electrically connected with the battery pack and used for charging an electric vehicle; a power input cabin is arranged on the right skirt edge of the second-class chassis and provided with a mains supply connector. The energy storage power distribution vehicle has the characteristics of millisecond-level access, zero flicker of power supply, silence, environmental protection, flexibility, large energy storage capacity and the like, when accidents such as power failure occur, the energy storage power distribution vehicle can respond in millisecond and timely supply power to the outside in emergency, the charging pile is arranged, the liquid cooling over-charging and quick charging functions can be realized by the charging pile, and emergency guarantee is provided for the electric vehicle.

The utility model aims at providing the two-section type clamping jaw structure suitable for the automobile interior cup holder, and the problems that a clamping jaw of an original one-section type clamping jaw structure is directly connected with the cup holder, a special-shaped cup (bottle) is prone to being clamped when taken out and needs to be put back for the second time and then taken out, and the connecting position of the clamping jaw and the cup holder is extremely prone to being damaged after the special-shaped cup (bottle) needs to be taken out after the special-shaped cup (bottle) is taken out after the special-shaped cup (bottle) is taken out are solved. A first hole A in the clamping jaw is coaxially matched with a first rotating shaft B on the upper clamping jaw bracket; a second rotating shaft D on the upper clamping jaw bracket is coaxially matched with a second hole C in the lower clamping jaw bracket; and the spring is coaxially matched with a third rotating shaft E on the lower clamping jaw bracket. The cup holder has the advantages that the two-section type clamping jaw structural design is adopted, the clamping force generated after a water cup (bottle) is placed in the cup holder cannot be reduced, the water cup (bottle) can be firmly fixed, and the situation that the water cup (bottle) cannot be taken out due to the fact that the water cup (bottle) is clamped very tightly is avoided.

The invention discloses a leakage-proof shell-and-tube heat exchanger which comprises a fixedly connected shell, two tube plates, a plurality of heat exchange tubes, a shell side inlet, a shell side outlet, a tube side inlet, a tube side outlet and a plurality of baffle plates, and the gap between the baffling end of each baffle plate and the inner wall of the shell is larger than the gap between the other outer circumference and the inner wall of the shell. The baffle ends of two adjacent baffle plates are arranged in opposite directions in the radial direction; annular plates are arranged on the two axial sides of each baffle plate at intervals, the radial outer ends of the annular plates are connected with the inner wall of the shell, the radial inner ends of the annular plates are located on the radial inner sides of the other outer circumferences of the corresponding baffle plates, and the baffle ends of all the baffle plates are located on the radial inner sides of the radial inner ends of all the annular plates. The sum of axial gaps between each baffle plate and the annular plates on the two sides of the baffle plate is smaller than the minimum gap between the baffle plate and the inner wall of the shell; the heat exchanger not only can prevent leakage flow, improve heat exchange efficiency, reduce vibration and noise and prolong service life, but also has the advantages of being easy and convenient to manufacture, install and maintain and wide in application range.

The invention discloses a precise temperature control and energy comprehensive management device for an injection molding machine, the device is arranged on a machine barrel of the injection molding machine, the device comprises a temperature difference power generation system, a semiconductor refrigeration system and a cooling system, the temperature difference power generation system comprises a plurality of temperature difference power generation sheets and is used for controlling the temperature of a high-temperature heating section of the machine barrel and absorbing waste heat for power generation; the plurality of thermoelectric power generation sheets are connected in series to the voltage stabilizing circuit to supply power to a PLC of the injection molding machine; the semiconductor refrigeration system comprises a plurality of semiconductor refrigeration sheets and is used for controlling the temperature of the low-temperature heating section of the machine barrel; the cooling system is used for maintaining the constant temperature difference between the cold and hot ends of the thermoelectric power generation sheet and improving the refrigeration efficiency of the semiconductor refrigeration sheet. The device has the advantages of being simple in structure, safe, reliable, long in service life, free of moving parts, free of noise, environmentally friendly and the like, continuous and precise control over the temperature of the high-temperature section of the machine barrel can be achieved by controlling the heat dissipating capacity of the cold end of the thermoelectric power generation piece, and the temperature of the low-temperature section of the machine barrel can be precisely controlled by changing the magnitude of current supplied to the semiconductor chilling plate.

The invention relates to the technical field of wind power utilization, in particular to a wind speed self-adaptive triboelectricity-electromagnetic induction hybrid wind-driven generator based on an inertia driving conversion mechanism, which comprises a base, an induction power generation structure, a planetary gear structure, a friction rotor structure, a friction stator structure and a wind power conversion mechanism, the induction power generation structure is located above the base and connected with the base in a clamped mode, the planetary gear structure is located above the induction power generation structure, the friction rotor structure is connected with the induction power generation structure and the base in a clamped mode, the friction rotor structure surrounds the planetary gear structure, and the friction stator structure surrounds the friction rotor structure. The wind power conversion mechanism penetrates through the friction stator structure and is fixedly connected with the planetary gear structure. The wind energy collecting device has the efficient wind energy collecting effect.

The utility model discloses a pastry leavening machine for wheaten food processing and making, and particularly relates to the technical field of wheaten food processing devices.The pastry leavening machine comprises a box body, a leavening assembly for leavening pastry is arranged in the middle of an inner cavity of the box body, and an adjusting mechanism is arranged on the right side of the leavening assembly; the front side of the box body is provided with a transmission assembly for transmitting the fermentation assembly, and the left side of the upper end of the box body is fixedly provided with a feeding port for conveniently feeding materials into the device. According to the pastry leavening machine for processing and making the cooked wheaten food, the dough pressing roller is matched with the conveying belt II and the conveying belt I, so that leavened dough can be extruded, air in the dough can be better extruded out through continuous extrusion, noise cannot be generated by adopting an extrusion mode, and the pastry leavening machine is very convenient to use. During extrusion, the distance between the sliding block and the dough pressing roller can be adjusted according to the size of the dough by controlling the adjusting mechanism, so that the dough can be kept in a certain shape during extrusion, and subsequent taking work is facilitated.

The utility model relates to the technical field of vertical honing equipment, and provides workpiece outer surface vertical honing machining equipment which comprises a base, the top of the base is fixedly connected with a machine body, the top of the machine body is fixedly connected with an air cylinder, and the output end of the air cylinder is fixedly connected with a honing equipment body. A supporting plate is fixedly connected to the surface of the machine body, feeding mechanisms are arranged at the top and the bottom of the supporting plate, each feeding mechanism comprises a transmission assembly and a discharging assembly, each transmission assembly comprises a motor, a feeding disc and a containing groove, and each motor is fixedly connected to the bottom of the supporting plate. When a workpiece falls off, the workpiece can make contact with the rubber plate and apply downward thrust to the rubber plate, at the moment, the rubber plate can reduce the shaking amplitude under the action of the spring damper, so that the situation that the workpiece is greatly collided with the guide plate when falling off is avoided, noise is not generated, then the workpiece falls off along the guide plate, and the purpose of automatic discharging is achieved.

The present invention discloses an electromagnetic heater power supply with over-voltage and under-voltage protection functions, including a circuit, wherein the circuit is electrically connected to an over-voltage and under-voltage protection circuit. The circuit is electrically connected to a circuit board. The over-voltage and under-voltage protection circuit is electrically connected to an over-voltage and under-voltage protection circuit board. The over-voltage and under-voltage protection circuit board has an over-voltage and under-voltage protection circuit board. Alternatively, the over-voltage and under-voltage protection circuit board has two sub-over-voltage and under-voltage protection circuit boards. One of the over-voltage and under-voltage protection circuit boards has an over-voltage and under-voltage protection circuit. Alternatively, one of the over-voltage and under-voltage protection circuit boards has two sub-over-voltage and under-voltage protection circuits. Both of the sub-over-voltage and under-voltage protection circuit boards have sub-over-voltage and under-voltage protection circuits. When the power supply voltage of the electromagnetic heater power supply with over-voltage and under-voltage protection functions is too high or too low, the power supply can be quickly cut off to prevent the insulated gate bipolar transistor (i.e., IGPT) from being burned out.

The utility model discloses a multifunctional fluent metal storage shelf, which belongs to the technical field of fluent shelves, and comprises a plurality of support rods, a plurality of supporting rods, a plurality of supporting rods, a plurality of supporting rods, a plurality of supporting rods, a plurality of supporting rods, a plurality of supporting rods, a plurality of supporting rods and a plurality of supporting rods, the goods shelf mechanisms are arranged in the vertical direction, each goods shelf mechanism comprises a fence fixing part and a sliding guide platform, the side edges of the fence fixing parts are fixedly installed on the multiple supporting rods, and the sliding guide platforms are arranged in an inclined mode; the angle of the sliding guide platform can be quickly adjusted through the telescopic adjusting mechanism, the adjusting process is simple and convenient, the multiple ball mechanisms are arranged on the sliding guide platform and have the guiding and supporting effect on sliding of goods, rolling damping of the ball mechanisms can be adjusted, and the service life of the goods is prolonged. Damping of the ball mechanisms is sequentially increased in the inclination direction of the guide sliding platform, so that the speed of goods sliding along the guide sliding platform is slowed down, it is guaranteed that the goods descend slowly, and large noise cannot be generated.

This invention provides a coaxial, low-noise, smooth, slow-rebound torsion spring hinge. It utilizes the release of elastic force after the torsion spring is twisted to achieve automatic rebound during hinge closure, while simultaneously using the resistance of a hydraulic damper to reduce the impact force during hinge closure. In particular, the structure of the buffer component that works in conjunction with the hydraulic damper has been improved, featuring a spiral slide and ball bearings to enable the buffer component to function with extremely low friction, eliminating frictional noise at the mating surfaces of the buffer component, and resulting in better smoothness during hinge rotation.

The present invention provides a thermally stable deburring and trimming device for extending the burr removal of a pipe, comprising: an air guide for guiding the direction of compressed air, an air guide portion capable of guiding and extending the direction of compressed air is provided outside the air guide; a heating sleeve covering the outside of the air guide portion of the air guide and used to generate heat, the heating sleeve generates heat to heat the compressed air guided by the air guide and sends it out from the air outlet; a protective sleeve, adapted to be arranged outside the heating sleeve for accommodating the air guide and the heating sleeve; an air outlet, assembled in the protective sleeve and connected to the air outlet, and provided with a plurality of air outlets. The spiral direction of the air guide groove greatly extends the travel direction of the compressed air, thereby lengthening the heating distance of the compressed air inside the heating sleeve, which not only reduces the energy consumption of the heating sleeve, but also improves the stability of temperature control, and the heated compressed air is fully mixed inside the air outlet and then dispersed and blown out from the air outlet, thereby heating and removing burrs and flash.

The application belongs to the technical field of electric appliance circuit, and particularly relates to a sound equipment and an audio power amplifier static current adjusting method, which comprises a playing assembly, the playing assembly comprises a shell, an adjusting device is arranged on the inner side of the shell, and the sampling end of the adjusting device comprises a digital potentiometer, a seventh resistor, a seventh NPN triode, a connection upper end and a connection lower end. The audio power amplifier in the existing sound equipment can change the static current after temperature change due to the triode characteristics, which not only affects the hearing and the index, but also can cause the power amplifier burning in the case of positive feedback of temperature and current in the serious case. The traditional audio power amplifier often uses a temperature-sensitive resistor to stabilize the static current, and the working principle determines that the static current cannot be accurately maintained, and only the working range can be ensured. Moreover, due to the temperature sampling point, the effect is often poor.

The present invention relates to a workpiece holding device and method, and specifically provides a workpiece holding device for positioning a workpiece on a processing device, comprising: a sacrificial support member, which is used to support the workpiece; a workpiece holding layer, which is formed by a curable material applied to the sacrificial support member, and the workpiece holding layer fixes the workpiece at a predetermined position on the sacrificial support member after curing is completed, and the sacrificial support member and the workpiece holding layer are allowed to be destroyed by the cutting head of the processing device during the processing of the workpiece; a curable material collector, which is arranged below the sacrificial support member and is used to collect the curable material that is separated from the sacrificial support member during the application of the curable material, the curing of the curable material and / or the processing of the workpiece; a curing processing unit, which includes a controller and a curing rate regulator, and the controller controls the curing rate regulator to adjust the curing rate of the curable material by changing at least one factor affecting the curing; and a supporting assembly, which is used to support the sacrificial support member, the curable material collector and the curing processing unit, and the supporting assembly is configured to be removably mounted on the processing device.

This invention provides an active front hatch cover hinge and a pedestrian protection system, belonging to the field of automotive component technology. It includes: a cover seat with a locking block; a pop-up seat rotatably connected to the cover seat; a locking plate hinged to the cover seat and rotatable about its hinge point on a rotational plane, the locking plate having a locking hook; and a tension spring, one end of which is connected to the locking plate and close to the locking hook, the other end of which is connected to the pop-up seat, the tension spring being inclined to the rotational plane of the locking plate. The advantages of this invention are: the hinge can actively pop open the front hatch before a vehicle collision; the pop-up seat can only unlock by pulling the locking plate through the tension spring when subjected to a lifting force; under normal conditions, the pop-up seat remains locked to the cover seat; and the pop-up release structure of the hinge is reversible and reusable.

This invention discloses a small water circuit switching structure, including a main body with a water inlet channel, a water distribution chamber, and at least two water outlet channels that can cooperate with each other. It also includes: a switching disc disposed within the water distribution chamber, capable of axial and radial movement within the chamber, and able to open and close the water inlet of the water outlet channels; a guide post disposed around the periphery of the switching disc; a first guide inclined surface located around the periphery of the switching disc, with the guide post engaging with it; a second guide inclined surface located around the periphery of the switching disc, with the guide post engaging with it; and a spring engaging with the main body and the switching disc. The engagement of the guide post with the first and second guide inclined surfaces enables the switching disc to rotate. This switching assembly occupies a small space.

The utility model relates to the field of couplings, and discloses a diaphragm coupling. The connecting structure comprises a connecting piece and a right half shaft section, an adsorption magnetic block connecting block is fixedly installed on the surface of the right half shaft section, an adsorption magnetic block connecting groove is movably formed in the adsorption magnetic block connecting block, a left half shaft section is welded to the side face of the adsorption magnetic block connecting groove, and the adsorption magnetic block connecting groove is matched with the adsorption magnetic block connecting block in size; when the device is used, the adsorption magnetic block connecting groove is attached to the adsorption magnetic block connecting block, the overall stress of the diaphragm coupling is dispersed, the service life of the diaphragm coupling is prolonged, and an operator can conveniently install the diaphragm coupling. And the accommodating holes are well matched with the threaded holes, so that the right half shaft section and the left half shaft section are conveniently connected, and the phenomena of dispersion and falling are avoided under the high-speed operation of the diaphragm coupling.

The invention relates to a low-energy-consumption wireless electromagnetic wave moisture-proof mechanism, and the mechanism comprises a micro-processing controller module which is in control connection with a power conversion and drive module; a timer and a PWM (Pulse Width Modulation) are arranged in the micro-processing controller module, and the micro-processing controller module generates a control pulse signal with the frequency of 50Hz according to a preset program; the power conversion and driving module is in control connection with an annular coil, and the annular coil is arranged in a wall body; the annular coil is specifically a winding coil wound on a magnetic or non-magnetic framework. According to the overall system provided by the embodiment of the invention, the moisture in the wall is redistributed by using the electromagnetic field, and the problem of a moisture source is solved; the energy consumption is low; the required electric energy is less and is equivalent to long-term operation of low-power electronic equipment; different from mechanical dehumidification, operation noise and chemical agents do not exist; the coil can be embedded into a wall body during decoration or maintenance; and a sensor can be matched to realize intelligent humidity control.

The present invention discloses a thermoforming mold based on magnetocaloric effect, comprising a molding mold and a heating die head. The molding mold is composed of a plurality of molding molds, wherein an electromagnetic heating coil is arranged inside the molding mold. The heating die head cooperates with the molding mold, and the heating die head comprises a heating core rod, which extends into the mold cavity of the molding mold. The present invention has a reasonable design and a detailed principle. Based on the magnetocaloric effect, the invention is not directly applied to material heating, but the heating core rod is heated by the electromagnetic heating coil, and then the sealed blank is expanded and formed, thus filling the application gap of the magnetocaloric effect in the expansion forming direction and continuing the advantages of the magnetocaloric effect, so that the thermoforming mold has the advantages of environmental protection, accurate temperature control, high energy utilization rate, no need for combustion, no noise, etc., and is very suitable for promotion and application in the field of expansion forming.

The utility model provides a lifting support of a vehicle-mounted sound system, which comprises a shell, a driving seat installed in the shell in a lifting mode and a lifting platform located on the upper side of the shell and connected with the driving seat, guide rods used for guiding the driving seat are symmetrically installed in the shell, guide sleeves are symmetrically installed on the driving seat, and the lifting platform is connected with the guide rods. The guide rods are arranged in the corresponding guide sleeves in a penetrating manner; a containing groove is formed in the driving base in a penetrating mode, the guide sleeve is arranged in the containing groove, a gap is formed between the guide sleeve and the inner wall of the containing groove, the guide sleeve is sleeved with an elastic component, and the elastic component abuts against the inner wall of the containing groove under the action of elastic force. The lifting support of the vehicle-mounted sound equipment overcomes the defects that an existing lifting support of the vehicle-mounted sound equipment is prone to shaking and noise, and the guide rod is prone to being clamped.

The utility model discloses an efficient heat dissipation track lamp which comprises a lamp cylinder and an installation assembly, the lamp cylinder is cylindrical, a plurality of heat dissipation holes are formed in the cylinder wall of the lamp cylinder, a lamp panel and a lamp cover are installed at the two ends of the lamp cylinder respectively, the outer wall of the lamp cylinder is fixedly connected with a pair of threaded cylinders, internal threads are engraved on the inner walls of the threaded cylinders, and the installation assembly is fixedly connected with the lamp cylinder. A threaded cylinder is arranged in the lamp tube, a bolt matched with the threaded cylinder is in threaded connection with the interior of the threaded cylinder, a plurality of positioning seats are fixedly connected to the inner wall of the end, close to the lamp panel, of the lamp tube, a positioning rod is fixedly connected to each positioning seat, external threads are engraved on rod bodies of the positioning rods, and nuts matched with the positioning rods are in threaded connection with the positioning rods. The LED lamp tube is good in heat dissipation effect and high in efficiency, equipment such as a fan does not need to be installed, the internal space of the lamp tube is effectively saved, heat dissipation is facilitated, and meanwhile noise cannot be generated.

The invention discloses a copper-based powder metallurgy friction material containing composite iron powder and a preparation method of the copper-based powder metallurgy friction material. The friction material is prepared from, by weight, 45%-60% of electrolytic copper powder, 10%-20% of the composite iron powder, 10%-15% of granular graphite, 1%-5% of barite, 3%-6% of tungsten oxide, 2%-4% of high-carbon ferrochrome, 2%-4% of silicon dioxide and 1%-2% of porous zirconium carbide ceramic. Compared with the prior art, the friction material has the positive effects that the iron powder prepared by two different processes is added into the friction material, and optimal granularity matching is carried out, so that the strength and the hardness of the material are improved, and meanwhile, the noise generated in the braking process is effectively reduced. According to the invention, the porous zirconium carbide ceramic is added into the friction material, so that the heat resistance of a brake pad can be improved, the stability of a friction coefficient is ensured, and vibration and noise during braking are reduced.

The utility model discloses a rotary table structure of a vertical milling lathe, which belongs to the field of machine tools and comprises a rotary table component, a support component and a driving component, the rotary table component comprises a worktable, the worktable is rotatably mounted on the support component, the driving component comprises a motor, a motor support ring and a rotor fixing ring, and the motor comprises a motor stator and a motor rotor. The motor stator is installed on the supporting assembly through the motor supporting ring, the rotor fixing ring is installed on the motor rotor and connected with the workbench, and the motor rotor drives the rotor fixing ring and the workbench to rotate when rotating. The traditional mechanical gear transmission is cancelled, and the rotating table is directly driven by the torque motor to rotate, so that the rotating table can quickly realize continuous indexing of angles; the transmission device is compact in structure, easy to manufacture and convenient to operate, and main transmission is gapless, noiseless, efficient and high in reliability.

The utility model relates to electronic equipment technical field, concretely relates to a kind of integrated heat pipe's case structure and electronic equipment.Case mechanism includes: mounting substrate, the mounting substrate is used to install board card module;Radiating side plate, the radiating side plate is installed in one end of the mounting substrate;Heat pipe, the heat pipe is laid on the mounting substrate upper end and the radiating side plate inner side, can be the heat generated by the board card module is transferred to the radiating side plate;Natural radiator, the natural radiator is installed in the outer side of the radiating side plate, can be through heat pipe baseplate to board card module and case body radiate heat, and heat dissipation efficiency is high, and the noise caused by fan, with the characteristics of long equipment life and not need equipment internal power supply.Electronic equipment includes the integrated heat pipe's case structure of preceding described;Board card module is provided with multiple, each board card module is arranged in parallel with the radiating side plate, and multiple board card module longitudinal row material is arranged on the mounting substrate.

This invention discloses a microchannel heat exchanger driven by an electrohydrodynamic (EHD) pump, characterized by comprising an EHD pump unit and a microchannel heat exchange unit; the EHD pump unit includes a pair of emitter / receiver electrodes, alternately arranged along the flow direction at the bottom of the microchannel, and several EHD pump units are connected in series to form a multi-stage electrode array; the microchannel heat exchange unit includes a jet port and an array-arranged microchannel; the dielectric liquid generated by the EHD pump is directly sprayed into the microchannel heat exchange region through the jet port; the EHD pump unit and the microchannel heat exchange unit are integrated in the same substrate, so that the electrode arrangement area and the heat exchange channel area form a continuous flow path.

The invention discloses an automobile rear-row seat backrest angle manual adjusting device and an automobile rear-row seat thereof, and belongs to the technical field of vehicles. Comprising a vehicle body fixing base plate which is fixed with a vehicle body in a use state; the backrest angle locking and unlocking mechanism is arranged on the vehicle body fixing base plate; the locking and unlocking control mechanism is hinged to the backrest angle locking and unlocking mechanism; the latch hook piece is connected with the backrest angle locking and unlocking mechanism and is simultaneously connected with the backrest of the back row seat of the automobile; the backrest angle locking and unlocking mechanism is characterized in that base plate latch column holes are formed in the vehicle body fixing base plate at intervals, and the backrest angle locking and unlocking mechanism is arranged on the vehicle body fixing base plate in a left-right moving mode and is locked with the vehicle body fixing base plate in a latch mode or unlocked from the vehicle body fixing base plate at the position corresponding to the base plate latch column holes under the action of the locking and unlocking control mechanism. The device has the advantages that locking is reliable, and comfort and safety of a passenger are guaranteed; no noise is generated in the process of adjusting the angle of the backrest of the back row seat of the automobile, and the adjustment is light and labor-saving.

This utility model relates to the field of ice maker technology, specifically an ice maker utilizing semiconductor refrigeration. An ice maker utilizing semiconductor refrigeration includes an upper cover assembly, a water tray, an inner cover, a cold plate, a radiator, an insulated outer shell, a base, and a bottom cover. Its features include: the bottom of the insulated outer shell is connected to the base; a cold plate is located inside the insulated outer shell; a water tray is located inside the cold plate; the top of the cold plate is connected to the inner cover; and the upper cover assembly is connected above the inner cover. A radiator is located below the cold plate, and a cooling fan is located on one side of the radiator. The base contains a drive circuit board and a DC power supply, which is connected to a power cord. Compared with existing technologies, this ice maker utilizing semiconductor refrigeration optimizes the semiconductor refrigeration module design, improves the heat exchange system, and combines an advanced temperature control scheme to achieve fast ice-making speed, high ice-making quality, ease of use, and low energy consumption.