43results about How to "Large design space" patented technology

According to the plastic surface deep scene vacuum plating manufacturing process, UV primer is sprayed to the back face of a plastic product, and a mirror surface primer layer is formed; the mirror surface primer layer is placed in vacuum electroplating equipment, vacuumizing is conducted till the vacuum degree is 5 * 10 <-3 > Pa or below, 99.99% of high-purity aluminum materials are subjected to vacuum evaporation, and a mirror surface electroplated aluminum layer is obtained; engraving a required pattern on the mirror surface electroplated aluminum layer by adopting laser engraving equipment; spraying UV finish paint on the surface of the carved pattern to form a protective layer; spraying the UV finish paint on the front surface of the plastic product to form a mirror paint layer on the front surface; placing the front mirror surface paint layer in vacuum electroplating equipment, vacuumizing to below 5 * 10 <-3 > Pa, and carrying out vacuum evaporation on 99.99% high-purity indium material or zinc sulfide to obtain a semi-permeable mirror surface electroplated layer; the electroplated layers on the front and back surfaces mutually reflect to form a deep scene (multi-layer scene) effect; the pattern has a three-dimensional and multi-layer visual effect when viewed from the front side, UV gloss oil is sprayed on the surface of the semi-permeable mirror surface electroplated layer, and the formed surface protective layer is excellent in wear resistance; and the attractiveness and durability of the product are obviously enhanced.

The telescopic device comprises a driving motor, a telescopic mechanism connected with the driving motor and a shell, the telescopic mechanism comprises a reciprocating screw rod and a sliding block, a sliding block hole is formed in the sliding block, the reciprocating screw rod penetrates through the sliding block hole, and the reciprocating screw rod is connected with an output shaft of the driving motor so that when the reciprocating screw rod rotates, the reciprocating screw rod can rotate in the sliding block hole. The sliding block axially and linearly reciprocates on the reciprocating lead screw, a first guide piece extending into a threaded groove in a rod body of the reciprocating lead screw is arranged in a sliding block hole, at least one guide assembly is arranged on the surface of the sliding block, a sleeve is arranged on the sliding block and fixedly connected with the sliding block, and the end, away from the sliding block, of the sleeve extends out of the shell. The invention further discloses a massager which comprises the telescopic device. Compared with the prior art, the problem that the product size is large when the reciprocating stroke is long is solved, the product is convenient to carry, meanwhile, the use scene of the product is increased, and the product design space is larger due to the fact that the appearance of the product is changed along with the change of the structure of the product.

The invention belongs to the related technical field of dual-scale structure design, and discloses a dual-scale structure optimization design method and system based on substructure data driving, and the method comprises the steps: an offline stage: for cell elements of a dual-scale structure, carrying out the cutting operation of a level set function, obtaining a virtual microstructure, and carrying out the cutting operation of the level set function; determining the density of the actual microstructure according to the density of the virtual microstructure; performing static condensation through a substructure method to obtain a stiffness matrix of the super-unit, and constructing a mapping model of the cutting height parameter, the stiffness matrix of the super-unit and the density of the actual microstructure; in the online stage, a data driving model with the cutting height parameter as the input quantity and the stiffness matrix of the super-unit and the density of the actual microstructure as the output quantity is obtained; and applying the data driving model to a finite element optimization process of the dual-scale structure, and finally obtaining an optimized dual-scale structure. According to the invention, an off-line data driving method is adopted to carry out dual-scale structure optimization, and the efficiency can be greatly improved under the condition that the precision is ensured.

The utility model belongs to the technical field of welding, and relates to a swing structure and a wire bonder, the swing structure comprises a rotating shaft, a swing body, a driving assembly and a monitoring assembly; the swinging body can swing around the rotating shaft under the action of the driving assembly, and an arc-shaped mounting surface is arranged on the tail end surface of the swinging body; the monitoring assembly comprises a grating ruler which is attached to the mounting surface; the driving assembly comprises a coil, the coil is fixed to the swing body, and a heat dissipation gap is formed between the coil and the mounting face. The tail end face of the swing body is provided with the arc-shaped mounting face, the grating ruler is fixed to the mounting face, parts do not need to be additionally arranged for placing the grating ruler, the structural design of the swing body can be simplified, and the motion inertia of the swing body is reduced; besides, a heat dissipation gap is formed between the coil and the mounting surface, so that enough space is formed around the coil and the grating ruler for air circulation, heat dissipation of the coil and the grating ruler is facilitated, and the situation that the measurement precision is affected due to the fact that scales of the grating ruler are changed due to high temperature is prevented.

The invention discloses a ship bow design method suitable for a river-sea direct ship, and the method comprises the steps: defining and constructing a key feature control line through feature parameters, and building a parameterized model of a ship bow; a mother ship type is selected, and initial values, corresponding to the characteristic parameters, of the mother ship are obtained; constructing a variation range of the characteristic parameters relative to an initial value of the mother ship; generating N groups of feature parameter schemes by using a Latin hypercube design method; inputting the N groups of characteristic parameter schemes into a parameterized model to generate N ship body geometric model schemes; calculating the total resistance and the maximum impact pressure of the bow of the N ship body geometric model schemes; respectively establishing a total resistance performance prediction model and a bow maximum impact pressure prediction model by means of a neural network method; an improved differential evolution algorithm is constructed, the ship bow optimization design of the river-sea direct ship is carried out with the aim of reducing the total resistance of the ship and the maximum impact pressure of the ship bow, and a design result is obtained. According to the designed ship bow, the resistance performance of the ship can be improved, and meanwhile the attack performance can be considered.

The utility model provides a double-control faucet. The double-control faucet comprises a water outlet main body and a water outlet pipe fitting, the water outlet body is provided with a mounting cavity, a cold water channel and a hot water channel, and a mixed water channel is formed in one end of a mounting opening of the mounting cavity. And a mixing valve core is mounted in the mounting cavity. The water outlet pipe fitting is mounted at the mounting opening of the mounting cavity, and the water inlet end of the water outlet pipe fitting is coaxial and communicated with the mounting cavity. A temperature control assembly in linkage with the mixing valve element is arranged in the water inlet end of the water outlet pipe fitting, the temperature control assembly is provided with a temperature adjusting handle extending out of the periphery of the water outlet pipe fitting, and a flow control assembly is further arranged on the water outlet pipe fitting and located on the downstream of the temperature control assembly, so that a structure that the temperature control assembly and the flow control assembly are arranged in a staggered mode is formed. Therefore, the situation that the two switches are arranged together to cause large installation position size and congestion is avoided, the influence on the appearance modeling design of the faucet is reduced, and the appearance of the faucet has a larger design space.

The invention discloses a multi-link suspension structure for motorcycles, comprising a frame, a mounting bracket, a shock absorber, a first connecting rod, a second connecting rod, a rear rocker arm, and a rear wheel assembly. The multi-link suspension structure for motorcycles decomposes the force of road surface feedback step by step under the action of multi-stage connecting rods, so that the force finally transmitted to the human body becomes smaller, so the shock absorption effect is good. In addition, because the overall structure is arranged at the bottom of the engine, the shock absorber part can be directly disassembled and assembled for assembly and maintenance, and the remaining assembly space inside the vehicle body is not occupied. The design utilizes a large space, and the assembly and maintenance are convenient. The overall design is more optimized, and the driving quality of the whole vehicle is further improved. The appearance is beautiful and atmospheric, the shape is unique and novel, and there is a larger design space and modification plan for the vehicle.

The application discloses an aero-engine ice wind tunnel test section modeling simulation optimization integrated platform, comprising a geometric parameterization modeling module, a mesh division and boundary condition setting module, an aero-engine performance calculation agent model module, a CFD simulation module, an iterative optimization module, a visualization and data analysis module, the application realizes deep coupling of geometric parameterization modeling, CFD simulation, aero-engine performance calculation and multidisciplinary optimization technology, and constructs an automatic closed-loop process of the aero-engine ice wind tunnel test section from geometric modeling to flow field simulation analysis and then to aerodynamic layout optimization, so that the high efficiency of calculation is ensured, the accuracy of simulation results is improved, a fast, accurate and scalable technical tool is provided for accurate flow field simulation and efficient aerodynamic layout optimization of the aero-engine ice wind tunnel test section, and the technical problems of long design period, low efficiency and high cost of the aero-engine ice wind tunnel test section are solved.

The invention relates to a beam-slab composite lattice structure, in particular to a beam-slab composite lattice structure with a non-uniform-thickness skin and a preparation process of the beam-slab composite lattice structure, and solves the technical problems that an existing beam-slab composite lattice structure is insufficient in light weight degree, and the skin and unit cell design is relatively split. According to the beam-slab composite lattice structure, the skin is non-uniform in thickness, the thickness of the skin and the diameter of the supporting beam of the unit cell are related to the stress of the corresponding position of the skin, and the rigidity of the structure is improved. By adjusting the thickness of the unit cell skin of the composite unit cell, the lightweight degree of the structure can be further improved. And meanwhile, the transition platform is arranged between the two adjacent unit cell skins, so that the connectivity of the adjacent composite unit cells can be enhanced and the stress concentration effect can be reduced while the lightweight requirement of the structure is met. The invention further provides a preparation process of the beam-slab composite lattice structure with the non-uniform-thickness skin, and synchronous integrated gradient design of the skin layer and the unit cell layer can be achieved.

The present invention relates to the field of optical lens technology, and specifically to an optical lens calibration method and system. First, an original optical lens parameter vector is obtained, and an image quality evaluation value of the original parameter vector is calculated by a ray tracing method, so as to effectively distinguish the optical lens that needs to be calibrated and determine the first optical lens parameter vector; then, the first optical lens parameter vector is input into a conditional generative adversarial network to generate a second optical lens parameter vector, and the conditional generative adversarial network introduces image quality evaluation loss and manufacturing constraint loss, which can guide the generator to generate an optical lens parameter vector that meets imaging requirements and complies with physical manufacturing limitations; then, the image quality evaluation value of the second optical lens parameter vector is calculated by a ray tracing method to ensure that the second optical lens parameter vector can meet the imaging requirements, and then the optical lens is calibrated according to the second optical lens parameter vector, thereby improving the accuracy of optical lens calibration and reducing the calibration cost.

The utility model relates to the field of locks, in particular to an unlocking mechanism and a lock body, and the unlocking mechanism comprises a shifting piece, a transmission shifting rod, a safety gear and a safety shifting piece; the shifting piece is connected with the first end of the transmission shifting rod, a gear part is arranged at the second end of the transmission shifting rod, and a hinge part is arranged between the first end and the second end of the transmission shifting rod; the gear part is meshed with the safety gear, the safety gear is connected with the safety shifting piece, and the safety shifting piece is used for being connected with a main body piece to achieve the purpose of unlocking the safety spring bolt. The transmission shifting rod is driven to swing through translation of the shifting piece, then the safety gear is driven to rotate through swing of the transmission shifting rod, finally the safety shifting piece is driven to act, and the purpose of unlocking the safety tongue is achieved. Compared with a traditional knob driving mode, the unlocking mechanism provided by the embodiment of the utility model has the advantages of simple structure and convenience in control; more importantly, the mechanism has small influence on the appearance of the lock, so that the design space of the appearance of the lock is larger.

The invention discloses an express transportation logistics vehicle, belongs to the technical field of express transportation vehicles, and solves the problem that an existing logistics vehicle is not suitable for driving on a bumpy road section. The vehicle comprises a container assembly, a damping suspension assembly, a built-in wheel assembly, a steering assembly and a solar range extending system. The container is installed on the damping suspension assembly, and the bottom of the damping suspension assembly is connected with the built-in wheel assembly. A steering assembly is arranged in the damping suspension assembly, and the steering assembly is movably connected with the built-in wheel assembly; a solar range extending system is arranged on the top of the container. In the logistics vehicle, the damping suspension assembly is used for damping the container assembly, so that the logistics vehicle is suitable for running on a bumpy road section; the built-in wheel assembly drives the logistics vehicle to advance; the solar range extending system provides endurance support for the logistics vehicle through solar energy, the stability and reliability of the logistics vehicle are improved, long-time high-load transportation can be achieved, and the tail-end express logistics service coverage rate in remote areas is greatly increased.

The present invention discloses a zoom lens and a mobile terminal, wherein the zoom lens comprises a lens barrel and a focus moving group, the lens barrel is extended along a first direction, and the lens barrel has a cavity; the focus moving group is movably arranged in the cavity along the first direction, and comprises a focus moving carrier and an elastic kit, the focus moving group comprises a first carrier and a second carrier which are connected to each other and relatively movable in the first direction, in the first direction, the first carrier and the second carrier are respectively provided with a first mounting hole and a second mounting hole for lens installation, and the two ends of the elastic kit are respectively correspondingly arranged at the outer side of the first mounting hole and the outer side of the second mounting hole, in the present invention, an elastic kit is arranged between the first carrier and the second carrier, and during the zooming process, the elastic kit enables the first carrier and the second carrier to move relatively, thereby increasing the optical performance of the zoom lens on the basis of satisfying the stacking height.

The invention discloses a circuit breaker, and the circuit breaker comprises a housing which is provided with an inner cavity; the driving part and the second end of the driving shaft move synchronously, and the position where the driving part is located deviates from the first axis; the inner handle and the driving part form linkage, the inner handle is provided with a switching-on position, a tripping position and a switching-off position, and the tripping position is located between the switching-on position and the switching-off position; one end of the moving contact assembly is hinged to the inner handle, the axis of the hinged position is parallel to the second direction, and the hinged position rotates along with the inner handle; the lock catch assembly has a locking state and an unlocking state; when the inner handle is in a tripping position, the lock catch assembly is in an unlocking state; the rotating piece is rotationally arranged around the third axis and the shell; the mechanism spring is connected between the moving contact assembly and the rotating part; the operating mechanism has three states, is compact in structure and is very suitable for the explosion-proof circuit breaker.

The application relates to a passage integrated design method for an axial flow blade of an aero-engine, and belongs to the technical field of aero-engine aerodynamic design. The method can couple and control the passage integrated design of the blade, an end wall and an angle area. Starting from passage geometric characteristics, non-dimensional conversion is carried out; control points, virtual control points and local deformation domains are regularly constructed in the non-dimensional flow field; the extended free deformation technology is used to carry out integrated control; the flow field after the control is converted into a three-dimensional Cartesian coordinate system again, so that the integrated design of the blade, the end wall and the angle area is realized. The application can ensure that the end wall can still meet the periodicity requirement after the control, solves the limitation that the end wall cannot be included in the deformation domain during the deformation of the traditional free deformation technology, provides a larger design space for the full three-dimensional design of the passage, and can improve the design efficiency of the axial flow fan, the compressor and the turbine.

A large-aperture reflector supporting structure adapted to a multi-angle gravity field relates to the field of supporting design of a large-aperture reflector assembly for space optical remote sensing, is connected to the back of a reflector, and comprises a triangular back plate, three whiffletree supporting structures and three radial supporting structures, the three whiffletree supporting structures and the three radial supporting structures are connected to three corners of the triangular back plate respectively, three circular nesting holes are formed in the back of the reflecting mirror, the ends, facing the reflecting mirror, of the radial supporting structures are bonded to the circular nesting holes, each whiffletree supporting structure comprises a plurality of bonding pads, and the bonding pads are bonded to the back of the reflecting mirror through glue injection. And the supporting structure is compact in structure and high in rigidity, so that when the optical axis of the reflector is placed at different angles relative to the gravity direction, high reflector surface shape quality is easy to realize.

The utility model provides a reflective rim with a lateral air tap, which comprises a rim body matched with a tire, a lateral air tap fixing hole is formed in the rim body, a spoke is fixed on the inner side of the rim body, a reflective surface is arranged on the outer surface of the spoke, and a mounting cylinder for mounting an axle is arranged in the center of the spoke. Two bearings are arranged in the mounting cylinder at intervals, inner rings of the bearings are connected with an axle, and the two ends of the axle extend out of the bearings and then are connected with a front fork of the electric vehicle. According to the reflective rim with the lateral air taps, the side face of the rim is punched, limitation of the air taps to the shape of the spoke is reduced, meanwhile, the reflective faces are arranged on the two faces of the spoke, and safety accidents are reduced.

The utility model discloses a kind of electromagnetic induction heating assembly and heating cigarette containing it, electromagnetic induction heating assembly includes induction heating unit, further include fixed base, fixed base is hollow spherical with inner cavity, the spherical surface of fixed base is opened with multiple and the opening of cavity intercommunication, induction heating unit one end is embedded in fixed base, induction heating unit remaining part is exposed outside fixed base and forms overhanging section. Heating cigarette includes paper empty pipe, paper empty pipe inside channel is sequentially provided with electromagnetic induction heating assembly, tobacco core material section, functional section and filter section along the axial direction, in electromagnetic induction heating assembly, the overhanging section of induction heating unit is embedded into tobacco core material section. The utility model has the following advantages compared with prior art: realize the effective fixation and stable heating of induction heating unit in tobacco core material, simultaneously block tobacco core material, and it is convenient to effectively adjust cigarette suction resistance.

The assembling equipment comprises a jig and a forcing device, the jig comprises a first placing structure and a pressing structure, the first placing structure is provided with a first placing position, the pressing structure can move between the pressing position and the opening position under the driving of the forcing device, and the pressing structure at the pressing position is opposite to the first placing position; the pressing structure can rotate around the first axis, and the forcing device can move relative to the first placing structure in the axial direction of the first axis. The pressing structure comprises a forced part, the surface of the forcing device comprises a spatial curved surface, and in the process that the forcing device moves from the first position to the second position, the spatial curved surface continuously abuts against the forced part so as to force the pressing structure to rotate from the pressing position to the opening position; the device layout is optimized, the design difficulty is reduced, device interference is avoided, and automation is facilitated.

The utility model provides a portable charger combination, which solves the problems of charging connection and carrying, and is characterized by comprising a first main body used for carrying out alternating current-direct current voltage conversion and providing direct current voltage output, and a second main body used for storing electric quantity and providing direct current voltage output, the first main body and the second main body are respectively provided with electric contact parts which are matched with each other so that the second main body can take electricity from the first main body, and the electric contact part of the first main body and the electric contact part of the second main body can be combined or detached; and the first main body and the second main body are respectively provided with a power supply socket for outputting direct current voltage. According to the combined structure, the problems of charging connection and carrying are solved, the electric contact parts of the second main body and the first main body are in butt joint during charging, meanwhile, the first main body is further provided with the power supply socket to meet the charging requirements of other electronic products such as a mobile phone, and the defect that a traditional product occupies a charging wire exclusively during charging is overcome.

This invention provides a metasurface structure and design method for realizing broadband measurement substrates, relating to the field of micro-spectral imaging technology. It enables spectral imaging devices to achieve higher spatial resolution while maintaining spectral resolution. The metasurface structure includes a metasurface modulation layer, a CMOS image sensor wafer layer, and a signal processing circuit layer. The metasurface modulation layer comprises multiple metasurface modulation units, each independently performing broadband modulation of incident light. The transmission spectrum corresponding to each metasurface modulation unit includes multiple absorption peaks. The CMOS image sensor wafer layer receives the optical signal encoded by the multiple metasurface modulation units of the metasurface modulation layer and converts the optical signal into an electrical signal. The signal processing circuit layer processes the electrical signal from the CMOS image sensor wafer layer to obtain the transmission spectrum corresponding to each metasurface modulation unit.

The invention relates to the technical field of mechanical metamaterials, and discloses a Bessel curve variable thickness-based negative Poisson's ratio honeycomb structure, the structure is formed by a plurality of times of transverse and longitudinal arrays of a single cell of a concave triangular honeycomb structure, and the single cell is formed by connecting two first straight wall beams and two second straight wall beams which are symmetrically arranged end to end; a first straight wall beam and a second straight wall beam are arranged on the two sides of the symmetry axis respectively, and the first straight wall beam and the second straight wall beam are connected in an acute angle mode. The thickness of each straight-wall beam changes in the length direction of the straight-wall beam, the distribution trend of the thickness is defined through a Bezier curve, and compared with uniform thickness distribution, the overall trend of the thickness of the straight-wall beam is thicker in the middle and thinner on the two sides. The design freedom degree and the energy absorption capacity of the honeycomb structure can be improved.

The invention discloses a thin pulley block of a needle selection device and the needle selection device provided with the pulley block. The thin pulley block mainly comprises a support, two pulleys, a first fixing plate, a second fixing plate and a third fixing plate. The two pulleys are connected through the support, and the two pulleys are installed on the support in a freely rotating mode through the corresponding bearing assemblies. The first fixing plate, the second fixing plate and the third fixing plate are all fixed to the support, one pulley is located between the first fixing plate and the second fixing plate, and the other pulley is located between the second fixing plate and the third fixing plate. According to the design of the frame shaped like the Chinese character'wang ', under the condition that the vertical plate of the pulley block is thinned, the structural stability of the support can be enhanced, and the stress of the shaft part for bearing the pulley is changed from the stress of the end part of a cantilever beam fixed at a single end to the stress of the middle part fixed at two ends, so that the problem of'supporting' under the stress of the pulley shaft is solved; the manufacturing problem of the ultra-thin pulley block is solved.

The utility model provides a deep-sea flexible continuous pipe structure which solves the technical problems that due to the fact that the direction and size of ocean current waves are uncertain, the pipe is usually bent into a C shape or an S shape in the side direction under the action of surge and water flow impact force, and the influence on a pipeline is serious, and can be widely applied to the field of deep-sea transportation. The pipe wall of the pipe is sequentially provided with a lining layer, a compensation enhancement layer, a framework layer, an isolation layer, a spiral enhancement layer and an outer protection layer from inside to outside. The lining layer is made of ultra-high molecular weight polyethylene, and the compensation reinforcing layer is formed by curing a front layer of equal-thickness high-strength high-modulus fiber and a back layer of equal-thickness high-strength high-modulus fiber and resin and is continuously wound on the outer side of the lining layer; the framework layer is formed by curing high-strength high-modulus fibers and resin, and the isolating layer is made of polyethylene; the spiral reinforcing layer is made of glass fiber reinforced plastics or aramid fibers, the outer protective layer is made of PE or PU plastics, optical fibers and optical fiber sensors are further arranged in the pipe wall, and the optical fiber sensors are arranged at intervals and connected through the optical fibers.

The invention discloses a surface acoustic wave filter end-to-end design method and system based on deep learning. The method comprises the following steps: constructing a high-fidelity data set of a surface acoustic wave resonator; a neural operator model is designed and trained to serve as a forward proxy model, and rapid and high-precision prediction from structure parameters to admittance response is achieved; integrating the neural operator and an ABCD matrix cascade physical model, constructing a differentiable calculation graph, and directly optimizing resonator structure parameters through a gradient descent algorithm to match target filter performance indexes; the design method is realized based on the neural operator and the differentiable physical model, the trained neural operator model packages the physical characteristics of the resonator, and the neural operator model can be used as a general design asset and is directly reused for the design of filters with different frequency bands and indexes; the defects that a traditional method and an existing AI method have one question and one proposal, and knowledge cannot be accumulated and inherited are overcome.

This invention belongs to the field of computer software, and more specifically, relates to a two-stage asynchronous task result proxy method applicable to heterogeneous interfaces, comprising: a self-developed interface, a third-party interface, a third-party result container, a self-developed result container, and a third-party result proxy container; the self-developed interface module includes a self-developed abstract interface and a self-developed implementation interface; the self-developed implementation interface receives task A and task B; when task A is submitted, a self-developed result container object is created; the third-party interface is used to receive and execute task B; the self-developed result container is used to store the result of task A; the self-developed result container receives task B and calls the third-party interface; the third-party result container is used to receive the result of task B; the third-party result proxy container inherits from or implements the third-party result container in terms of type. This invention can seamlessly connect asynchronous tasks of two heterogeneous interfaces without requiring any modification to the proxied result container and its related libraries.

The invention relates to the technical field of adhesive tapes, in particular to an anti-static adhesive tape for electronic materials and a preparation method of the anti-static adhesive tape. The prepared adhesive tape comprises a release film layer, an adhesive layer, an anti-static coating and a base material film layer from top to bottom. The anti-static coating is located between the base material film layer and the adhesive layer, and the base material film layer is bonded with the release film through the adhesive layer. Aiming at the special requirements of low adhesion and high anti-static performance of an electronic component on the protective film in the use process, accurate regulation and control of stripping force and surface resistance are realized by optimizing the ratio of a cross-linking agent to an anti-static agent in the adhesive layer; meanwhile, the problems that a traditional anti-static adhesive tape is too high in stripping force and sensitive elements are prone to being damaged are effectively solved, and the strict requirement of electronic materials for electrostatic protection is met.

The invention discloses a head massage instrument. The head massage instrument comprises a shell, a vibration motor and a massage piece. The vibration motor is arranged in the shell, and a driving shaft of the vibration motor extends out of the shell; the massage part comprises a plate body and a plurality of massage columns arranged on one side of the plate body, a connecting part is arranged on the side, away from the massage columns, of the plate body, the connecting part is connected with a driving shaft of the vibration motor, and the plate body and the shell are spaced. According to the technical scheme, the structure of the head massager can be simplified, and the use reliability of products is improved.

A large aperture mirror support structure suitable for various angle gravity field relates to the field of large aperture mirror assembly support design of space optical remote sensing, is connected to the back of the mirror, and comprises a triangular back plate, three whiffletree support structures and three radial support structures, the three whiffletree support structures and the three radial support structures are connected to three corner portions of the triangular back plate respectively, three circular nested holes are arranged on the back of the mirror, the end of the radial support structure is bonded to the circular nested hole, and each whiffletree support structure comprises a plurality of bonding pads which are bonded to the back of the mirror by glue injection. The mirror is supported in quasi-static state, the support structure is compact in structure and high in rigidity, so that when the optical axis of the mirror is placed at different angles relative to the direction of gravity, the mirror surface quality is easy to be high.

The present invention relates to an assembly of a vehicle wheel (1) and a caliper brake (2), wherein the wheel includes a rim (1.1), a hub section (1.3), and at least one spoke (1.2) connecting the hub section to the rim, and the caliper brake includes a brake disc (2.2) having an arched brake disc retaining drum (2.3), a brake caliper (2.1) having a caliper housing surrounding the brake disc, and at least one brake piston assembly disposed in the housing of the brake caliper, which is configured to transmit clamping force to the brake disc by means of at least one brake piston, wherein the at least one brake piston assembly is disposed in the side of the caliper housing facing the vehicle interior when the brake is installed in the vehicle, the brake disc retaining drum is connected to the hub of the wheel, and, when viewed in the vehicle installation state and along the axial direction of the wheel, the arched portion of the brake disc retaining drum is oriented toward the vehicle interior.