45results about How to "Realize miniaturization design" patented technology

The utility model belongs to the field of parking space locks, and discloses a parking space lock which comprises a blocking piece, a locking piece and a locking piece. A driving unit; a transmission mechanism; a linear track; a substrate; when the driving unit drives the transmission part to move, the transmission part drives the moving part to slide along the linear rail and drives the connecting arm to slide along the linear rail and rotate relative to the moving part at the same time, so that the connecting arm drives the blocking part to turn over. When the blocking piece is subjected to external impact force in the open state, the blocking piece drives the connecting arm to move, the connecting arm drives the moving piece to slide relative to the linear rail, and the linear rail limits displacement of the moving piece in the direction perpendicular to the sliding direction of the moving piece. Power transmission is achieved through the transmission mechanism, the linear rail and the connecting arm are arranged independently, and the strength of the connecting arm and the transmission stability are guaranteed while the connecting arm moves; the linear track can assist the moving part in linear motion and can offset external impact force, so that the moving part is protected and prevented from being deformed and damaged; all the components can be integrated on the base plate, and therefore a user can conveniently install the parking space lock.

The invention provides an electronic device. A floor of the electronic device comprises a first edge and a second edge which are connected in a bent mode. The first radiating body, the second radiating body and the floor are arranged at intervals, and orthographic projections of a first feeding point of the first radiating body and a second feeding point of the second radiating body on the floor are located in a current weak point area of characteristic current of the floor; the first feed source is electrically connected to the first feed point and the second feed point, the phase difference of excitation signals fed into the first feed point and the second feed point by the first feed source is 180 degrees, and the first radiator and the second radiator jointly excite the floor to generate excitation current flowing in the extension direction of the first edge under the action of the first feed source. And the wireless signal of the target frequency band is supported. Therefore, the first radiating body and the second radiating body are mainly used as feed structures and do not have harsh electrical length limitation, and the two radiating bodies can realize miniaturization design and enable the first antenna to have a relatively wide bandwidth.

The invention relates to a multi-absorption-band ultra-wideband common-mode filter based on a mixed resonator structure. The multi-absorption-band ultra-wideband common-mode filter comprises a coupling microstrip line, a dielectric substrate, a main resonator, an auxiliary resonator and a resistor, the filter has an upper surface and a lower surface, and a coupling microstrip line comprises a metal conduction band located on a dielectric substrate and a metal ground layer located below the dielectric substrate; two ends of the coupling microstrip line are respectively connected with the input port and the output port; the main resonator is etched in the middle of the metal ground layer; the auxiliary resonator is etched on the outer side of the main resonator in the metal ground layer; the coupling microstrip line is mutually coupled with the main resonator and the auxiliary resonator to realize mixed resonance; the resistor crosses the gap of the auxiliary resonator at the intersection of the auxiliary resonator and the symmetric line, and the two ends of the resistor are connected with the metal ground layers inside and outside the metal conduction band; according to the invention, the ultra-wideband common-mode suppression bandwidth and a plurality of absorption bands are provided, and the absorption bands dissipate common-mode noise in the form of heat energy, so that the problem of potential common-mode electromagnetic interference in the system is reduced, and normal transmission of differential-mode signals is not damaged at the same time.

The utility model provides a low-torque pan-tilt camera device which comprises a support, a spherical groove corresponding to a spherical assembly is arranged on the support, the spherical assembly is located on the inner side of the spherical groove, a plurality of tooth grooves are formed in the outer side wall of the spherical assembly, and a plurality of clamping grooves are formed between the tooth grooves and the outer side wall of the spherical assembly. An arc-shaped rack for driving the spherical assembly to rotate is formed; a gear is fixedly arranged at the power output end of the motor, and the gear is meshed with the arc-shaped rack; the camera lens is located on the inner side of the spherical assembly. The utility model has the beneficial effects that the transmission ratio is small, that is, the output rotating speed is high, the torque is small, the shaking of the pan-tilt camera lens in the rotating process is avoided, and the transmission mechanism is suitable for high-speed and small-torque transmission application scenes.

A relay includes a contact cavity, a contact assembly, a breaking assembly, and a retaining member. The contact cavity includes a yoke plate. The contact assembly includes a stationary contact and a movable member, the movable member including a movable contact and a push rod member, the movable contact mounted on the push rod member, the push rod member movable relative to the yoke plate to move the movable contact to contact or separate from the stationary contact, the movable contact and the stationary contact being capable of forming at least one conduction path when the movable contact contacts the stationary contact. The breaking assembly includes an impactor, the breaking assembly configured to release the impactor in response to an activation signal to impact the movable member to break at least one of the at least one conduction path. The retaining member is connected to one of the yoke plate and the push rod member, the retaining member configured to cooperate with the other of the yoke plate and the push rod member to retain the push rod member at a predetermined position when the breaking assembly breaks at least one of the at least one conduction path.

The invention discloses AR glasses, and relates to the technical field of AR glasses, and the AR glasses comprise an optical machine module, an optical lens, and an antenna. The optical lens at least comprises a first area and a second area different from the first area; light emitted by the ray machine module enters the optical lens in the first area; the projection of the antenna on the optical lens is located in the second area; the antenna comprises a metal area, a bonding pad area and a feed coaxial line. The metal area is provided with a gap formed by slotting, and the feed end of the gap is electrically connected to the bonding pad area; at least part of the feed coaxial line is located in the bonding pad area and connected with the feed end, so that the feed end connected with the feed coaxial line enters an open circuit state, namely, the feed coaxial line is directly used as a feed line of the gap, a conventional coupling mode is avoided, the miniaturization design of the bonding pad area is achieved, and the size of the antenna is reduced. Therefore, the bonding pad area, the light machine module and the camera module can be hidden in the glasses frame together, so that the miniaturization requirement of AR glasses is met.

The invention provides a pump body assembly, a fluid machine and heat exchange equipment. The pump body assembly comprises a first air cylinder and a second air cylinder, and a partition plate is arranged between the first air cylinder and the second air cylinder. The volume of the third air cylinder is smaller than that of the first air cylinder and that of the second air cylinder. The first air cylinder and the second air cylinder are located between the first flange and the second flange; the third air cylinder is located between the second flange and the first cover plate; and the second cover plate is located between the second flange and the third air cylinder, and a first exhaust cavity of the second air cylinder is formed between the second cover plate and the second flange. The problem that in the prior art, miniaturization design of an air cylinder in fluid machinery is limited is solved.

The utility model discloses an optical sensor and an electronic device, the optical sensor comprises a substrate, a first optical sensing chip, a dodging structure, a first light transmission layer and a shading packaging layer, the first optical sensing chip is arranged on the substrate and is electrically connected with the substrate, the dodging structure is arranged above the first optical sensing chip, and the first light transmission layer is electrically connected with the first light transmission layer. The vertical projection of the dodging structure at least covers the effective photosensitive area of the first optical sensing chip, the first light transmitting layer is arranged above the dodging structure, and the vertical projection of the first light transmitting layer at least covers the effective photosensitive area of the first optical sensing chip. The shading packaging layer is arranged on the substrate and packages the first optical sensing chip, the dodging structure and the side portion of the first light transmitting layer. The electronic equipment comprises the optical sensor. According to the utility model, the half-power angle of the light above the first optical sensing chip is enlarged, so that the application performance of the optical sensor is improved; and the dodging structure is embedded in the packaging structure, so that the miniaturization design of the optical sensor can be realized.

The application discloses a kind of calibration devices for strapdown inertial measurement unit, solve the technical problems of the prior art, such as large size and weight of calibration tool, poor stability, which affects the final test accuracy, and the need to replace the turntable with larger volume and load for overturning calibration, leading to increased resource costs, comprising a calibration bracket, four calibration bracket package angles and a positioning locking device.The calibration bracket is fixedly connected to the inertial measurement unit body through the positioning locking device.The calibration bracket is fixed on the inertial measurement unit body through the positioning locking device, achieving miniaturization design, reducing the weight of the calibration device by about 90%, reducing the volume by about 40%, and greatly saving the resource cost and labor cost of strapdown inertial measurement unit calibration work.

The utility model discloses an integrated plug and a charging and discharging gun. The integrated plug comprises a housing, a metal insertion rod, an auxiliary control circuit board and a cable assembly. The metal insertion rods comprise an L-level insertion rod, an N-level insertion rod, a PE-level insertion rod and at least one identification insertion rod. The auxiliary control circuit board comprises an MCU auxiliary control module, an electric leakage protection chip, an electric leakage detection module and a charging and discharging identification module. The electric leakage detection module is connected with the L-stage insertion rod, the N-stage insertion rod and the electric leakage protection chip, and the electric leakage detection module detects the electric leakage condition and feeds back the electric leakage condition to the electric leakage protection chip; the charging and discharging identification module is electrically connected with the identification insertion rod; the charging and discharging identification module identifies the level signal and feeds back the level signal to the MCU auxiliary control module so as to identify the charging and discharging state. According to the utility model, leakage protection and charge and discharge identification functions are integrated on the plug, leakage protection is realized at the plug end, and the power utilization safety of cables from a power supply to a gun body part can be ensured.

The invention discloses a biogas cracking hydrogen production coil reaction device, and belongs to the technical field of biogas hydrogen production devices. Comprising a purifier, a raw material gas preheater, a reformer, a conversion coil pipe, a mixed gas heater and a steam generator, the purifier is used for treating biomass biogas, the preheater is used for heating raw material gas, the reformer carries out cracking hydrogen production through the spiral coil pipe and a catalyst, and the steam generator generates water vapor through flue gas waste heat. A traditional straight pipe structure is replaced with the conversion coil pipe structure, the conversion coil pipe has a large reaction area under the same height, heat transfer and reaction control can be more effectively carried out in the hydrogen production process, the equipment height is reduced, the equipment size is reduced, and miniaturization design is achieved.

The invention discloses a photoelectric conversion module, a display assembly, electronic equipment and a power management method, the display assembly comprises a display panel, photoelectric conversion pieces and an optical waveguide module, the photoelectric conversion pieces are arranged on the peripheral side of the display panel and configured to convert light energy into electric energy, and the optical waveguide module is arranged on the display panel and configured to convert the light energy into the electric energy. The optical waveguide module is configured to conduct external light to the photoelectric conversion member. According to the photoelectric conversion module, the display assembly, the electronic equipment and the power management method, display of a display panel can be prevented from being affected, light energy can be collected and converted into electric energy to supply power to the electronic equipment, the cruising ability of the electronic equipment can be improved, and therefore the electronic equipment can be more compact while the miniaturization design of the electronic equipment is achieved. And the cruising ability of the electronic equipment is considered.

The invention provides an AR micro-projection color light machine and near-to-eye display equipment, and relates to the technical field of AR. The optical machine comprises an imaging lens group which comprises a diaphragm, a first lens, a second lens, a third lens and three fourth lenses which are sequentially arranged from an object side to an image side along an optical axis; the color combination prism is an X-cube color combination prism, is arranged between the third lens and the fourth lens, and is used for combining the three-color light path into one color light path for outputting; the image source is arranged on the image side of the fourth lens and used for providing an electronic image; wherein the first lens is a positive lens, the second lens is a positive lens, the third lens is a negative lens, the fourth lens is a positive lens, and the second lens and the third lens are cemented lenses. By constructing an optical framework of the lens and the X-cube color combination prism and through cooperation of all optical elements, full-color display can be achieved, and meanwhile the multiple aspects of performance such as the small size, the large field angle, the excellent optical effect and the high definition are taken into account.

The application relates to a microstrip coupler, a circuit board and a communication device. The microstrip coupler comprises a first ground layer, a first dielectric layer, a second ground layer, a coupling line, a second dielectric layer, a third ground layer and a signal line. The first projection of the coupling line on the third ground layer in the direction perpendicular to the third ground layer is completely non-overlapped with the second hollow area, and the second projection of the signal line on the second ground layer in the direction perpendicular to the second ground layer is completely non-overlapped with the first hollow area. Thus, a cavity is not needed on the signal line as in the related art, so that the product volume of the microstrip coupler can be reduced, miniaturization design is realized, the line length of the output end and the input end of the signal line can be reduced, the insertion loss is reduced, and the output efficiency of the power amplifier is improved; the coupling line and other devices located on both sides of the signal line do not interfere with each other, so that the signal can be normally and stably transmitted; in addition, the product area is reduced, which is beneficial to the arrangement of other devices.

The present application relates to a five-axis three-dimensional printing device, which comprises a bed assembly, a protection mechanism, a printing library and a moving mechanism, the bed assembly comprises a base, a rotary table and a plurality of heat insulation plates, the rotary table and the heat insulation plates are both arranged on the base; the plurality of heat insulation plates enclose a processing cavity, a rotating arm of the rotary table is arranged in the processing cavity; the protection mechanism is arranged above the processing cavity, the protection mechanism is provided with a retractable door for closing or opening the processing cavity; the printing library is arranged outside the processing cavity; the printing library is provided with a printing head; the moving mechanism is arranged outside the processing cavity, and the moving mechanism comprises a zero-point clamp for clamping the printing head; the zero-point clamp is movably arranged above the retractable door; wherein, when in a processing state, the retractable door opens the processing cavity to allow the zero-point clamp to drive the printing head into the processing cavity; when in a reloading state, the retractable door closes the processing cavity, and the printing head and the zero-point clamp are outside the processing cavity. The present application realizes high-precision printing of a small five-axis device.

The transformer structure with the high heat dissipation effect comprises a coil assembly, a magnetic core assembly and a heat dissipation piece, and a coil inner hole is formed in the coil assembly; a magnetic core middle column is arranged on the magnetic core assembly and arranged in the coil inner hole in a penetrating mode. The heat dissipation piece comprises a special-shaped heat dissipation piece, the special-shaped heat dissipation piece comprises a concentrated heat absorption part and a heat dissipation part, the concentrated heat absorption part is arranged in the inner hole of the coil in a penetrating mode and located between the coil assembly and the magnetic core middle column, one end of the heat dissipation part is connected with the concentrated heat absorption part, and the other end of the heat dissipation part is bent and extends out of the inner hole of the coil. Thus, the heat dissipation effect of the transformer can be improved, the size of the transformer can be reduced, the miniaturization design of the transformer is achieved, and then the cost can be reduced.

The invention belongs to the technical field of fluorescence detection, and particularly relates to a fluorescence excitation module and a sample imaging analysis device.The fluorescence excitation module is applied to the sample imaging analysis device.The fluorescence excitation module comprises a plurality of excitation units which are sequentially in light path communication in the transmission direction of a light path, the plurality of excitation units are respectively used for emitting visible light with different wavelengths; the focusing lens is used for focusing the visible light emitted from the plurality of excitation units and transmitting the visible light to the transmission optical fiber, and the transmission optical fiber is provided with a synthesis end for receiving the plurality of visible light and a plurality of beam splitting ends for irradiating a sample. The plurality of excitation units of the fluorescence excitation module are integrally arranged, and the transmission optical fiber is adopted to transmit an optical path, so that the size is obviously reduced, and the miniaturization design of the fluorescence excitation module is facilitated.

The utility model relates to an ion tuyere high-pressure ion and compressed gas nozzle mixing device which comprises a nozzle shell, an internal thread is arranged on the inner wall of the nozzle shell, an ion needle frame is connected to the internal thread in a threaded mode, a vent groove is formed in the outer side wall of the ion needle frame, and the vent groove is used for guiding compressed gas to flow; the ion needle frame is connected with an ion needle, and the ion needle is used for generating positive and negative ions after being electrified with high voltage; and a spray head is screwed on the internal thread on the inner wall of the nozzle shell. The high-pressure ion generator and the compressed gas outlet are integrated on the ion needle frame, so that the miniaturization design of the ion tuyere is realized, the overall size is reduced, and the ion tuyere can be conveniently used in occasions with narrow spaces; the device is relatively simple in structure, few in parts, low in manufacturing cost and suitable for large-scale production; the safety is high, the stability and safety of the device structure are enhanced by using the plastic set screw, and the high-voltage wire is prevented from loosening or falling off.

The invention provides a pump body assembly, a fluid machine and heat exchange equipment. The pump body assembly comprises a plurality of first air cylinders, a plurality of second air cylinders and a plurality of second air cylinders, the volume of the second air cylinders is smaller than that of the first air cylinders, and the first air cylinders and the second air cylinders are sequentially arranged in the axial direction; the multiple first air cylinders are located between the first flange and the second flange; the flange cover plate is located on the side, away from the first flange, of the second flange and located between the second flange and the second air cylinder. The pump body assembly is provided with a first lubricating oil way and a second lubricating oil way which are used for at least conducting lubricating heat dissipation on the first air cylinder and the second air cylinder correspondingly. The problem that in the prior art, miniaturization design of an air cylinder in fluid machinery is limited is solved.

The invention discloses a radio frequency front-end module and electronic equipment. The radio frequency front-end module comprises a radio frequency switch, a first duplexer, a second duplexer and a filtering unit. The radio frequency switch is provided with a first switch end, a second switch end, a third switch end and an antenna end used for being connected with an antenna. The first duplexer is provided with a first connecting end, and the first connecting end is connected to the first switch end through a first transmission link. The second duplexer is provided with a second connecting end, and the second connecting end is connected to the second switch end through a second transmission link and connected to the third switch end through a third transmission link. The filtering unit is connected to the third transmission link. According to the radio frequency front-end module provided by the invention, the radio frequency signals of three frequency bands can be transmitted and received only by arranging two duplexers, and compared with the prior art, the radio frequency front-end module can be provided with one duplexer less, so that the layout space of the radio frequency front-end module is saved, and miniaturization design is facilitated.

The utility model discloses a radio station supporting double transmission modes, and belongs to the technical field of radio station communication. The radio station comprises a shell and a radio station body arranged in the shell, the radio station body comprises a first circuit layer, a second circuit layer, a third circuit layer and a fourth circuit layer which are sequentially and adjacently arranged, and the first circuit layer is provided with a display module, a peripheral interface module and a key module. The second circuit layer is provided with a power supply module, a central processor and a positioning module, the third circuit layer is provided with an information processing module, a sending routing switch, a receiving routing switch and a mode control module, and the fourth circuit layer is provided with an optical fiber receiving module, a wireless receiving module, an optical fiber sending module and a wireless sending module. According to the utility model, the positions of the modules in the radio station are reasonably arranged, the miniaturization design of the radio station is realized, the radio station is convenient to carry, and the use requirements of complex scenes are met.

The present invention provides a pull rod connection mechanism, a phase shifter and an antenna, wherein the pull rod connection mechanism is used to be arranged on the cavity of the phase shifter and connect the dielectric plate of the phase shifter with the pull rod, the cavity includes a top wall and a bottom wall respectively arranged at both ends in the thickness direction, and two side walls respectively arranged at both ends in the width direction, the pull rod connection mechanism includes at least one connecting member, the connecting member includes a connecting portion for being arranged outside the cavity and a driving portion which can penetrate into the cavity from the top wall or the bottom wall and connect with the dielectric plate in the cavity, and the connecting portion is provided with a pull rod fixing structure. In the pull rod connection mechanism provided by the present invention, the connecting member used for connecting with the pull rod can penetrate into the cavity from the top wall or the bottom wall of the phase shifter cavity and connect with the dielectric plate, that is, the pull rod can be arranged on the side of the cavity through the connecting member, thereby reducing the space occupied by the phase shifter in its length direction, and facilitating the miniaturization design of the antenna.

The application specifically relates to the technical field of household appliances, and particularly relates to a sweeper, which comprises a base provided with a rolling brush cavity and a battery cavity on a side close to the ground, the rolling brush cavity and the battery cavity are adjacently arranged along a first direction; a rolling brush mechanism is movably installed in the rolling brush cavity; an installation cavity is arranged on a side of the base far from the ground and between the rolling brush cavity and the battery cavity; the installation cavity is in communication with the rolling brush cavity; a driving mechanism is arranged in the installation cavity; a driving end of the driving mechanism extends into the rolling brush cavity and is connected with the rolling brush mechanism; under the driving effect of the driving mechanism, the rolling brush mechanism moves along a third direction. The driving mechanism is directly arranged in the installation cavity, the space of the base is fully utilized, the space utilization rate is improved, and the overall volume of the transmission mechanism can be reduced. The volume of the driving motor and the transmission mechanism is large, the compact layout of the sweeper in the longitudinal height can be reduced, and the thickness of the sweeper can be controlled within a certain range.

The utility model relates to the technical field of optical equipment, and discloses an optical imaging structure, an imaging lens and an endoscope. The optical imaging structure of the endoscope is provided with an object side and an imaging side which are oppositely arranged; the optical imaging structure comprises a light guide optical fiber, a first lens group arranged on an object side, a second lens group arranged on an imaging side and a beam splitter prism arranged between the object side and the imaging side. A beam splitter prism is arranged in the optical imaging structure, a first lens group used for illumination and imaging is arranged on the object side, a second lens group used for imaging is arranged on the imaging side, and the beam splitter prism reflects light introduced by the light guide optical fiber to the object side for illumination. After the optical imaging structure is adopted, illumination and imaging of the endoscope can be achieved at the same time without additionally arranging an independent illumination lens, and compared with an endoscope with an imaging lens and an illumination lens separated, miniaturization design of the endoscope can be achieved easily.

This article provides a heat pump device, including: a chassis; a spirally arranged shell-and-tube heat exchanger disposed on the chassis; a compressor located above the shell-and-tube heat exchanger; and an integrated valve island, including an integrated body having a refrigerant flow path. The integrated valve island is at least partially disposed inside the area enclosed by the shell-and-tube heat exchanger, or the integrated valve island is completely located between the shell-and-tube heat exchanger and the compressor. This heat pump device utilizes the space inside the area enclosed by the shell-and-tube heat exchanger to accommodate the integrated valve island, or utilizes the space between the shell-and-tube heat exchanger and the compressor to accommodate the integrated valve island. This reduces the space occupied by the integrated valve island inside the shell-and-tube heat exchanger and outside the area between the shell-and-tube heat exchanger and the compressor within the heat pump device. This results in a more compact structure for the heat pump device, requiring less volume in the area inside the shell-and-tube heat exchanger and outside the area between the shell-and-tube heat exchanger and the compressor, thus facilitating miniaturization of the heat pump device.

The application relates to the technical field of gas-insulated switchgear, in particular to a switchgear. The switchgear comprises three groups of first connecting pieces, the three groups of first connecting pieces are respectively used for connecting cables and pole columns of corresponding three phases, the three phases comprise phases A, B and C, the three groups of first connecting pieces are arranged in a triangular shape, the distances from the two first connecting pieces used for connecting the cables of the phase A and the cables of the phase C to the corresponding pole columns are both first distances, the distance from the first connecting piece used for connecting the cable of the phase B to the corresponding pole column is a second distance, the first distance is smaller than the second distance. The switchgear is compact, small and simple in overall structure, thereby saving materials and reducing costs, is favorable for reducing impedance loss, and utilizes the space redundancy near the circuit breaker, simultaneously shortens the corresponding cable path connected therewith, and reduces the installation difficulty.

The utility model discloses a glue outlet needle head cleaning device, which belongs to the technical field of mechanical equipment, and comprises a base plate and a clamping component arranged on the base plate, a charging tray group and a first winding column are respectively arranged on two longitudinal sides of the clamping component, and the charging tray group comprises a first charging tray and a second charging tray which are arranged at an interval along the transverse direction; dust-free cloth sequentially passes through the first material disc, the first winding column and the second material disc, the dust-free cloth is clamped around the glue outlet needle head through the clamping assembly, then the glue outlet needle head is wrapped by the dust-free cloth, residual glue on the glue outlet needle head can be removed when the glue outlet needle head moves up and down in a reciprocating mode, and after cleaning movement is completed, the glue outlet needle head can be cleaned by the dust-free cloth. The dust-free cloth can move along with rotation of the material disc so that the dust-free cloth stained with the residual glue can be recycled. The glue outlet needle cleaning device is compact in overall structural design, can be directly arranged on glue coating equipment to clean glue outlet needles, can be matched with various glue outlet needles, and has good use value.

This invention relates to the field of medical devices and discloses a sample analyzer. The sample analyzer includes a transfer container, a first sample dispensing device, a second sample dispensing device, a detection device, and a controller. The first sample dispensing device is used to collect at least a portion of the sample from the sample container, move the collected sample along a first transfer path to the transfer container, and dispense all or part of the collected sample into the transfer container. The second sample dispensing device is independent of the first sample dispensing device and is used to aspirate at least a portion of the sample dispensed by the first sample dispensing device from the transfer container, move the aspirated sample along a second transfer path to the sample dispensing position, and dispense all or part of the aspirated sample into a detection carrier located at the sample dispensing position. The first and second transfer paths are spaced apart. This invention balances the detection speed, accuracy of detection results, and miniaturization of the sample analyzer.

This invention belongs to the field of gas detection technology, specifically providing a gas concentration infrared sensor, including a cylindrical body and a circuit board. The circuit board is disposed within the cylindrical body, dividing the cylindrical body into a first space and a second space. An infrared light emitting component is located in the first space, and an infrared detection component is located in the second space. A first reflective component is located in the first space, and a second reflective component is located in the second space. The edge of the circuit board has a notch connecting the first and second spaces, and a third reflective component is located at the notch. The infrared light can be reflected sequentially between the first, third, and second reflective components and transmitted to the infrared detection component. This invention can form a double-layered reflective light path within the cylindrical body, ensuring the light path length while making the outer diameter and thickness of the infrared sensor smaller than a set value, thus achieving a miniaturized design of the infrared sensor.

This invention discloses a cantilevered aero-engine rotor structure and an aero-engine. The cantilevered aero-engine rotor structure includes a main shaft, an intermediate casing, a first bearing housing, a second bearing housing, and a power assembly. The main shaft has a support section and a load section at its two ends along its length, with the power assembly located in the load section. The first bearing housing is installed at the end of the support section furthest from the load section, and the second bearing housing is installed at the end of the support section closest to the load section. The intermediate casing is connected to both the first and second bearing housings, and the first and second bearing housings are joined around the support section to form a bearing cavity. The bearing cavity contains the first and second bearings. The first bearing is installed between the first bearing housing and the main shaft, and the second bearing is installed between the second bearing housing and the main shaft. The cantilevered aero-engine rotor structure provided by this invention adopts a 2-0-0 support scheme, which is simple in structure and has a reasonable and compact layout, simplifying the engine structure and reducing costs.