27results about How to "Small tolerance" patented technology

A scroll compressor is provided. The scroll compressor includes a housing, a fixed scroll member and an orbiting scroll member housed in the housing, the orbiting scroll member configured to be engaged with the fixed scroll member and orbitable with respect to the fixed scroll member to compress a working fluid, a partition configured to partition a space in the housing into a high-pressure chamber and a low-pressure chamber, and a positioning member provided between the partition and the fixed scroll member and configured to position one of the partition and the fixed scroll member with respect to the other of the partition and the fixed scroll member upon assembly. According to the scroll compressor of the present disclosure, by positioning the positioning member directly between the partition and the fixed scroll member, a tolerance chain between a discharge assembly and the fixed scroll member is shortened, and a tolerance between the discharge assembly and the fixed scroll member can be reduced.

The present invention provides an integrated unit cell for a fuel cell stack, comprising: an insert composed of a membrane electrode assembly and a pair of gas diffusion layers provided on opposite surfaces of the membrane electrode assembly; a frame in the form of a sheet disposed to surround the insert periphery at an outer boundary region of the insert and bonded to any one of the opposing surfaces of the insert periphery at an interface thereof by a first adhesive; and a pair of separators disposed on opposite surfaces of the frame, respectively, and bonded to the opposite surfaces of the frame by a second adhesive member.

The invention relates to a manufacturing method of a tungsten alloy ring combined product blank. The manufacturing method comprises the following steps that S1, a tungsten alloy ring combined pressed blank is manufactured through cold isostatic pressing; s2, cutting the tungsten alloy ring combined pressed blank to form a plurality of tungsten alloy ring pressed blanks; s3, the tungsten alloy ring pressed blank is subjected to sintering treatment; and S4, the multiple tungsten alloy ring sintered blanks are combined. The method has the effects that the product quality of the tungsten alloy ring combined product blank can be improved, and the production cost of the tungsten alloy ring combined product blank can be reduced.

A housing unit (2) for a semiconductor power module (1) comprises a molded body (3) configured to enclose electrical components of the semiconductor power module (1). The housing unit (2) further comprises at least one terminal (10) integrated and at least partially embedded in the molded body (3) such that the at least one terminal (10) extends through the molded body (3) and an end (11) of the at least one terminal (10) is exposed at an upper surface (6) of the molded body (3) with respect to a stacking direction (A) of the semiconductor power module (1). The at least one terminal (10) further comprises at least one sealing structure (13, 14) arranged in a boundary region (5) between the exposed end (11) and the molded edge (4) of the molded body (3), the sealing structure (13, 14) being configured to limit an upper extension of the molded body (3) during formation of the molded body (3).

The utility model relates to vehicle body technical field and provide a kind of instrument panel stiffening beam and vehicle, the utility model discloses instrument panel stiffening beam includes instrument panel stiffening beam main body, and is located at the mounting bracket of stiffening beam main body length direction both ends, each mounting bracket is equipped with the first installation part of being installed in the stiffening beam sub-mounting bracket of instrument panel stiffening beam main body, and the second installation part of being installed in the stiffening beam general mounting bracket of instrument panel stiffening beam main body.The utility model discloses the instrument panel stiffening beam, only needs to adopt one mould processing, this not only can improve production efficiency, also can greatly simplify processing manufacturing process, while the quantity of spare part is less, can reduce the multiple spare parts such as bolt and connecting procedure required in traditional assembly mode, and management and production cost can be reduced, and tolerance in assembly process can be reduced, prevent the problem of not easy assembly when loading.

The invention relates to a laminating machine for easily-stretched foam and a laminating method of the laminating machine. The laminating machine comprises a stand column frame (1), a cross beam (2) and a workbench (3). A foam discharging roller (4), a double-faced adhesive tape discharging roller (5), a double-faced collagen paper receiving roller (6) and a release film discharging roller (7) are sequentially arranged on the cross beam (3) in the conveying direction of the easily-stretched foam; a stripping knife (10) for stripping a double-sided adhesive tape and double-sided collagen paper, a plurality of pressing rollers (13) and a plurality of bottoming rollers (14) are arranged on the surface of the workbench (3); and a protective film feeding roller (8) and a protective film receiving roller (9) are arranged below the workbench (3). Compared with the prior art, in the laminating process of the laminating machine designed by the invention, the foam automatically falls down and is not pulled by external force, so that the laminating force is uniform, the product quality is stable, and the tolerance of the product is less than 0.1; and the laminating capacity is high and is 3-4 times that of manual laminating.

The subject of the invention is a motor vehicle door lock having a locking mechanism (5) comprising a rotary latch (6) and at least one pawl (7), the rotary latch (6) being engageable in at least one engagement position by means of the pawl (7); a release lever (8), wherein the locking mechanism (5) can be switched from the engagement position to a release position by means of the release lever (8); the invention relates to a locking mechanism (5) for a motor vehicle, comprising an electric drive unit (10, 11, 12) and an actuating lever (9), the actuating lever (9) being actuatable by the electric drive unit (10, 11, 13) and the locking mechanism (5) being at least indirectly unlockable by means of the actuating lever (9), the actuating lever (9) and the gear (10) of the electric drive unit (10, 11, 13) being mountable on a common shaft (19).

The invention discloses a pulse valve, and relates to the technical field of valves, the pulse valve comprises a shell assembly, a coil assembly, a permanent magnet assembly and a sealing assembly, the coil assembly and the permanent magnet assembly are both located in the shell assembly, the coil assembly is located on the periphery of the permanent magnet assembly, and the sealing assembly is located on the periphery of the permanent magnet assembly. The permanent magnet assembly comprises a permanent magnet, stop iron and an armature which are sequentially arranged in the axial direction of the shell assembly, the periphery of the end, close to the stop iron, of the armature is sleeved with an elastic element, the end, away from the stop iron, of the armature is connected with the sealing assembly, the armature can reciprocate in the axial direction of the shell assembly, and the elastic element is connected with the shell assembly. And the sealing assembly is driven to move back and forth. According to the invention, the number of size chain participation rings can be reduced, the performance consistency of products in batch production is improved, and meanwhile, the processing cost is reduced.

The invention discloses a large model-based medical problem consultation system and method, and the method comprises the steps: a dialogue inquiry module processes an input text, inputs the input text to a fine-tuned large model for model reasoning, and outputs a medical suggestion; the professional knowledge base module processes input texts and documents, inputs the input texts and documents to the framework based on the large model for processing, and outputs medical suggestions and related professional knowledge; the affected part image analysis module receives the medical image and inputs the medical image to the image classification model to obtain a corresponding disease name, the disease name is input to the fine-tuned large model, and the large model generates medical knowledge corresponding to the disease based on the disease name; the image classification model receives an input medical image, and performs feature extraction, fusion, weighting and classification on the medical image to obtain a corresponding disease name. The problems that young people have no time for offline inquiry and old people have insufficient understanding of early symptoms of diseases can be simultaneously solved, and early prevention, early discovery, early diagnosis and early treatment of the diseases are realized.

The utility model discloses a kind of gasket for sealing bottle cap that degrease cleanly, it is related to gasket field, including gasket body, the one end of gasket body is equipped with auxiliary sealing ring, and gasket body includes contact layer, barrier layer, support layer, elastic buffer layer and additional layer.The gasket for sealing bottle cap that degrease cleanly of the utility model, by the contact layer being set, so that can directly contact content, need chemical inertness, food-grade safety, by the adhesive layer being set, contact layer and barrier layer can be connected, by the barrier layer being set, oxygen, water vapor and light can be blocked, by the elastic buffer layer being set, bottle mouth tolerance can be buffered, compensation sealing pressure, on the basis of original sealing, barrier, add antibacterial, wear-resistant and the characteristics of response, by the additional layer being set, the problem that traditional sealing gasket is prone to breed mould can be solved through antibacterial layer, through wear-resistant layer, bottle cap life can be extended.

The utility model discloses a charging base station for an intelligent mower. The charging base station solves the problem that an existing charging base station cannot adapt to intelligent mowers of different heights. The charging base station for the intelligent mower comprises a machine shell, a charging assembly and a charging terminal, the charging assembly is arranged in the machine shell, the charging terminal is electrically connected with the charging assembly, the machine shell comprises a hollow suspension part, the charging terminal is installed in the suspension part, and the charging assembly is electrically connected with the charging terminal. The charging terminal comprises an end part and a limiting part, a part of the end part downwards penetrates through the suspension part and floats relative to the suspension part, and the limiting part limits the charging terminal to be downwards separated from the suspension part. The utility model further provides an intelligent mowing system which comprises the intelligent mowing machine and the charging base station in the technical scheme, a charging piece is arranged at the upper end of the intelligent mowing machine, and the height of the charging piece is gradually changed in the advancing direction of the intelligent mowing machine.

The present invention discloses a method for preparing a four-sided emitting white light CSP, comprising the following steps: S1 flip-chip LED chip; S2 fluorescent film is placed on the light-emitting side surface of the LED chip; S3 pressing to make the fluorescent film and the LED chip completely attached; S4 filling transparent glue into the gap of the fluorescent film; S5 encapsulating the reflective adhesive film on the fluorescent film and the transparent glue upper surface; S6 cutting to obtain an independent four-sided emitting white light CSP. The present invention heat presses the fluorescent film on the surface of the LED chip, and then fills the transparent glue into the gap of the fluorescent film to the same height as the fluorescent film. The prepared four-sided emitting white light CSP has a small tolerance and high light color consistency. It has good operability for ultra-thin fluorescent films. Compared with the conventional four-sided emitting white light CSP side fluorescent layer thickness tolerance of ±30um, the fluorescent layer thickness tolerance of the present invention is only ±5um, which greatly improves the light color consistency.

The invention discloses a magnetic assembly and a manufacturing method thereof. The magnetic assembly comprises a magnetic element and a peripheral structure body. The magnetic element comprises a magnetic core and a winding, the winding is embedded in the magnetic core, and PINs are formed through the top face and / or the bottom face of the magnetic core. The peripheral structure is adjacent to the peripheral side of the magnetic core. Wherein the magnetic element and the peripheral structural body are combined to form a magnetic assembly, one manufacturing method of the magnetic assembly is to thin the top surface and / or the bottom surface of the magnetic assembly through a thinning process, the other manufacturing method of the magnetic assembly is to thin the top surface and / or the bottom surface of a magnetic core through the thinning process, and / or to thin PINs of a magnetic core winding through the thinning process.

The invention discloses electronic equipment, relates to the technical field of electronic products, and is used for solving the technical problem that a key module is easily wrongly assembled in the assembling process. The electronic equipment comprises a key body and a shell, the key body comprises a pressing structure and a triggering structure, the pressing structure comprises an appearance face, the triggering structure is located on the side, opposite to the appearance face, of the pressing structure, the triggering structure comprises a first section and a second section which are arranged in the first direction, and the first section is located between the pressing structure and the second section; the second section comprises a first body part and a buffer piece; the buffer piece is arranged at one end, far away from the first section, of the first body part; a first communicating hole is formed in the shell, the second section is arranged in the first communicating hole, and the first communicating hole comprises a first hole opening facing the pressing structure; the orthographic projection of the first section on the reference plane is a first projection, the orthographic projection of the first orifice on the reference plane is a second projection, and the area of the first projection is larger than that of the second projection; wherein the reference plane is perpendicular to the first direction.

The present invention discloses a magnetic component and a manufacturing method thereof, wherein the magnetic component comprises a magnetic element and a peripheral structure. The magnetic element comprises a magnetic core and a winding, wherein the winding is embedded in the magnetic core, and a PIN foot is formed through the top surface and / or the bottom surface of the magnetic core. The peripheral structure is arranged adjacent to the peripheral side of the magnetic core. The magnetic element and the peripheral structure are combined to form a magnetic assembly, and one method for manufacturing the magnetic component is to thin the top surface and / or the bottom surface of the magnetic assembly through a thinning process, and another method is to thin the top surface and / or the bottom surface of the magnetic core through a thinning process, and / or, to thin the PIN foot of the magnetic core winding through a thinning process.

The utility model belongs to the technical field of projection lenses, and discloses an ultra-short-focus lens, which comprises a shell connected with the lens, and a turning module, a reflection bowl module and a light outlet are sequentially arranged on an emergent light path of the lens on the shell; the turning module is adjustably connected to the shell, and the reflection bowl module is adjustably connected to the shell. According to the utility model, rapid angle adjustment between the turning module and / or the reflection bowl module and the shell can be realized in the assembly process, so that specific use requirements are met.

The present invention relates to a brake. In the present invention, a housing (10) and a housing cover (14) constitute an exterior, and a driving pin (18) is arranged to penetrate an internal space (12) of the housing (10) and perform linear motion. A permanent magnet (24) and an external iron core (26) are stacked and arranged on the inner surface of the housing (10), that is, stacked and arranged in the internal space (12). The permanent magnet (24) and the external iron core (26) are stacked in a repeated form of a combination in which permanent magnets (24) are stacked on both sides of an external iron core. An internal iron core (29) is arranged on a pin groove (28) formed on the outer surface of the driving pin (18), and a coil (30) is arranged on the outer surface of the internal iron core (29). The coil (30) is arranged to face the external iron core (26) located between the permanent magnets (24). Therefore, for one coil (30), the magnetic flux generated by two permanent magnets (24) causes the coil (30) to move, thereby generating a relatively large thrust. In addition, since the internal iron core (29) and the coil (30) are directly provided on the driving pin (18), there is an advantage that the number of components and the weight of the moving parts can be minimized.

The invention relates to an opening device for a motor vehicle door, in particular a handle-free motor vehicle door, for example a handle-free motor vehicle side door. For this purpose, the opening device comprises an electric drive (1 to 4) and an associated adjusting element (5) for loading the door leaf. The adjusting element (5) acts on the door leaf along its adjustment stroke (S) with a stroke-dependent force. According to the invention, the electric drive (1 to 4) acts on the adjusting element (5) with a rack-and-pinion mechanism (7, 8) connected therebetween, the rack-and-pinion mechanism (7, 8) acting on the adjusting element (5) with different transmission ratios along an adjusting path (S) of the adjusting element.

The present application is suitable for the field of flexible printed circuit board testing, and provides a test method and device for improving FPC test yield from process and technology. The method comprises: measuring the size parameters of the flexible board in advance, determining the positioning size and tolerance of the first needle mold; placing the flexible board on the first needle mold, and positioning in X and Y directions; taking the contact surface of the first needle mold and the second needle mold as the size chain reference surface in the Z-axis direction, so that the relative distance between the tip of the long probe and the test point of the flexible board forms a closed loop; the bottom surface of the first needle mold is in contact with the top surface of the second needle mold, and at the same time the long probe touches the test point of the flexible board; the circuit is turned on, and the test is completed. The positioning of the product is carried out on the flexible board shape and B2B shape, the test yield is improved from the production process, the processing reference is changed from the processing technology, the size chain is shortened, the tolerance of the closed loop is reduced, and the test yield is improved.

The invention discloses a mounting device for an inter-column transformer, and belongs to the technical field of power grid mounting, the mounting device comprises a base plate, a moving assembly is arranged at the lower end of the base plate, fixing assemblies are arranged at the left end and the right end of the base plate, a groove is formed in the upper surface of the base plate, and a plurality of vertically extending hydraulic telescopic columns are fixedly arranged in the groove; a bearing plate is fixedly arranged at the upper end of the hydraulic telescopic column, an auxiliary groove is formed in the upper surface of the bearing plate, an operation table is slidably arranged in the auxiliary groove, the operation table is connected with a driving assembly, and a first strip-shaped groove and a second strip-shaped groove are formed in the upper surface of the operation table; and the first strip-shaped groove and the second strip-shaped groove are used for placing a supporting cross rod of the transformer. According to the invention, an operator can install the transformer on the ground in the whole course, the installation speed is higher, the tolerance is small, the measurement and adjustment are more convenient, and the accuracy is improved.

A circuit board structure includes a first insulating layer, a first metal layer, a second insulating layer, a second metal layer, a third insulating layer, and a first metal cap. The first insulating layer has a first through-hole. The first metal layer is located on the wall surface of the first through-hole and the surface of the first insulating layer. A second insulating layer fills the first through-hole and has a second through-hole. The second metal layer is located on the wall surface of the second through-hole. The third insulating layer fills the second through-hole and includes a first recess, exposing a portion of the second metal layer. The first metal cap is located in the first recess and connected to the second metal layer. The top of the first metal cap is either lower than or flush with the surface of the first metal layer of the first insulating layer.

The utility model discloses a kind of mobile base type permanent magnet speed regulator of air-cooled heat dissipation, including motor, base, speed regulation mechanism and driving mechanism, motor is set on base;Base includes upper base, lower base and multiple linear guides, linear guide is symmetrically set on lower base, the slider of linear guide is connected with upper base;Speed regulation mechanism is connected with the motor shaft of motor, and heat sink and flow guide fan blade are set on speed regulation mechanism;Driving mechanism is set on lower base, and driving mechanism is connected with upper base. Advantage: linear guide is rolling friction, and small friction makes that wear is smaller, can prolong service life, the tolerance between each structure inside linear guide is small, the gap between each structure is small, upper base is not easy to produce shaking in other direction, can reduce the noise generated by vibration;Heat sink and flow guide fan blade are heat dissipated to speed regulation mechanism, avoid high temperature to influence the normal operation of device and service life.

The invention provides a variable aperture device and a camera module, the variable aperture device comprises at least one stator, at least one rotor and at least one shell, the rotor is movably assembled on the stator, and the shell is assembled on the stator; the at least one driving assembly is used for driving the rotor to do axial movement relative to the stator; the motor comprises a stator, a rotor and a plurality of adjusting parts, at least one light through hole is defined by the adjusting parts, the adjusting parts are adjustably installed on the stator and the rotor, and along with the relative movement of the rotor relative to the stator, the relative position of the adjusting parts is driven to change so as to define the size of the light through hole; wherein the mover is installed on the outer side of the inner circumferential wall of the stator and located between the stator and the shell in the direction perpendicular to the optical axis; and each adjusting piece is rotatably connected to the rotor and is slidably connected to the stator.

The utility model discloses a high-stability ball head assembly and relates to the technical field of automobile accessories, the high-stability ball head assembly comprises a ball shell and a ball head which are used for providing support, a lining is fixedly installed at the bottom of the inner wall of the ball shell, and a dust cover used for preventing water and dust from entering the ball shell is fixedly installed at the top of the ball shell through bolts; a spring is fixedly installed above the dustproof cover, a rubber sleeve used for assisting sealing is fixedly installed on the outer wall of the top of the dustproof cover, a pull rod used for being connected with two rear wheels of an automobile is welded to one side of the spherical shell, and a ball pin rod is welded to the top of the ball head. The pull rod is of an integral structure, the spherical shell is welded to one side of the pull rod, and the ball head and the ball pin rod are directly installed in the spherical shell on one side of the pull rod, so that the bearing strength of the pull rod and ball head assembly can be improved, the structure is simpler, the production process can be simplified, the production cost is reduced, and the steering stability is guaranteed; safe and reliable steering operation is ensured.

The utility model belongs to the technical field of cold-rolling mills, and particularly relates to a four-roller cold-rolling mill for machining titanium 3D curved surface profiling materials. Comprising a rolling wheel set and an auxiliary wheel set, the rolling wheel set comprises two rolling wheels, the auxiliary wheel set comprises two auxiliary wheels, the rim faces of the two rolling wheels are divided into large column sections and small column sections in the axial direction, the radial faces of the two sides of the two rolling wheels are located on the same horizontal plane, and the large column sections and the small column sections are matched in a staggered mode. A rolling area is formed between the large column section and the small column section on the mutually staggered and matched sides of the two rolling wheels, the rim surfaces of the two auxiliary wheels are respectively attached to the radial surfaces of the two rolling wheels in a rolling manner, and the auxiliary wheels are used for abutting and limiting the rolling wheels; when high-hardness materials are machined, the rolling wheels can be prevented from being stressed and misplaced, and the qualification rate of finished products is increased.

The present invention discloses an automated skin trimming device for a target drone assembly production line, which relates to the field of aviation technology and solves the problems of long working hours and large tolerances in manual trimming in the prior art. The device includes a fixing mechanism, a rotary drive mechanism and a trimming mechanism. The fixing mechanism includes a first fixing component and a second fixing component, and the first fixing component and the second fixing component are used to fix the target drone to be trimmed; the rotary drive mechanism includes a first rotary drive component and a second rotary drive component for driving the target drone to be trimmed to rotate, and the first rotary drive component and the second rotary drive component are respectively installed on the first fixing component and the second fixing component; a skin trimming tool is installed at the end of the trimming mechanism to complete the trimming of the skin on the target drone to be trimmed through the trimming mechanism. Compared with the manual trimming method in the prior art, the device can significantly shorten the required working hours, improve work efficiency, and reduce tolerances.