80results about How to "Reduce Cumulative Tolerance" patented technology

The invention discloses a multidirectional button and knob structure with a light guide ring. The multidirectional button and knob structure comprises a knob support and a knob sleeve, wherein a revolute pair is arranged between the knob support and the knob sleeve, the knob sleeve is uniformly provided with rectangular lattices along the circumferential direction, and the rectangular lattices are matched with a photoelectric sensor to generate a rotating signal. The knob sleeve is internally provided with a structure with a middle button and buttons in four directions. The light guide ring comprises a light reflecting surface with a sawtooth structure, and light can be uniformly dispersed along the circumferential direction, so that a lamplight dead zone is eliminated. The light guide ring and the knob sleeve are both arranged on the knob support, thus, the tolerance stackup in mounting is reduced, and uniform gaps can be kept between the light guide ring and the knob sleeve. A hoodle slides on a gear structure of the knob sleeve, so that a rhythm handfeeling is created, and the torque of a knob is conveniently adjusted. All the parts are sealed between the knob sleeve and the knob support and mounted from the inside to the outside, and after being assembled with an automobile sound panel, the knob support is also sealed and cannot jump out when impact and collision happen.

The invention provides a reciprocating pump device capable of reducing bending stress acting on a crank shaft. In the reciprocating pump device (10) provided with a drive part (30) including a crank shaft driving a piston (14) of a reciprocating pump (12) and a reduction gear part (42) arranged with adjoining the drive part and including a large gear (44) attached on the crank shaft and a small gear (46) meshing with the large gear and attached to the input shaft (48) to which power is input, a first bearing (58) and a second bearing (56) rotatably supporting the input shaft are collected on a side opposite to the drive part (30) and the input shaft (48) is supported in a cantilever style. Consequently, the small gear is put close to the drive part and total length of the crank shaft is shortened to reduce bending stress.

The invention discloses an electromagnetic valve which comprises a valve seat with an internal cavity, a piston that can axially move in the internal cavity of the valve seat, a guide sleeve connected with one end of the valve seat, a fixed iron core matched with the guide sleeve, a movable iron core that can axially reciprocate in the guide sleeve, and a spring positioned between the fixed iron core and the movable iron core in the guide sleeve, wherein the valve seat is provided with a main valve port and the fixed iron core is fixedly connected with the guide sleeve. The electromagnetic valve is characterized in that one end of the guide sleeve is used for fixing the fixed iron core is provided with an opening, and the other end is provided with a limit bottom surface positioning the piston, and the limit bottom surface is provided with a through hole used for leading the lower end part of the front end of the movable iron core to pass through. Because the guide sleeve is provided with the limit bottom surface, and one part is reduced from the electromagnetic valve, the stack tolerance of the axial size of the electromagnetic valve is reduced, and the electromagnetic valve has good action property, simple assembly and low manufacture cost.

The invention discloses a manufacture process improvement of diaphragm springs, comprising the following steps: 1) blanking raw materials: namely, punching the blanking into an excircle shape of a diaphragm spring on a punch; 2) punching a window and a groove at once, namely, punching the window and the groove which forms a separated finger on the punch at the same time; 3) pressing a window fillet and an excircle fillet, namely, pressing the window fillet and the excircle fillet by a mould of the window fillet and the excircle fillet on the punch at once; 4) punching a mesopore; and 5) carrying out heat processing. The invention can improve manufacturing efficiency of diaphragm springs, reduce accumulated error of multiple working procedures, and improve dimensional accuracy of products.

The invention relates to a waterproof structure which comprises a shell and a cover, wherein the cover is assembled on the shell. The shell is provided with a groove. The cover comprises a protruding rib and a soft material structure, wherein the protruding rib is coated with the soft material structure, and the protruding rib and the soft material structure are integrally formed. The soft material structure is in interference fit with the groove. Due to the arrangement of the protruding rib, when the soft material structure is in interference fit with the groove, a support of the protruding rib can make the deformation of the soft material be reliable and achieve a good waterproof effect. Meanwhile, due to the fact that the soft material structure and the cover are integrally formed, additional assembly waterproof soft rubber is not needed, the assembly deviation of the waterproof soft rubber does not need to be taken into consideration for the arrangement of magnitude of interference, and therefore the good waterproof effect is achieved through a small amount of interference, and the requirement for the structure strength of a battery cover is lowered. The invention further relates to an electronic device with the waterproof structure, for example, a mobile phone. The waterproof structure has the good waterproof effect, assembly processes are reduced, and production efficiency is improved.

The invention belongs to the field of range hoods, particularly relates to an internal recycle range hood which is capable of purifying cooking fumes to purification gas. The internal recycle range hood comprises a collecting and leading-out device used for collecting and leading out the purification gas from the range hood. The collecting and leading-out device comprises an installation hanging plate, a decoration cover and a collection structure arranged in the decoration cover. The decoration cover and the collection structure are fixedly connected with the installation hanging plate and together form the collecting and leading-out device in an enclosure mode. The internal recycle range hood has the beneficial effects that (1), the decoration cover and the collection structure are fixedly connected with the installation hanging plate and together form the collecting and leading-out device in an enclosure mode, the purification gas is collected and led out from the range hood, simultaneous hanging of the decoration cover and the collection structure is achieved, length of a dimension chain is reduced, accumulated tolerance of the dimension chain is reduced, and assembly accuracyis higher; and (2), during installation, hanging of the decoration cover and the collection structure can be achieved with out adopting extra bolt connecting with a wall.

The invention discloses a forming tool device for oblique holes. The forming tool device comprises a profiling apparatus which is used for shifting the oblique holes to be in a vertical machining state, and a pressing claw apparatus which is disposed on the profiling apparatus and used for clamping an oblique hole carrier. By means of the profiling apparatus, the oblique holes on the oblique holecarrier are vertically distributed, through the pressing claw apparatus, the oblique hole carrier is clamped onto the profiling apparatus, and thus the machining efficiency and accuracy of the side oblique holes are improved.

The invention discloses a Mini LED module and a manufacturing method thereof. The Mini LED module comprises a PCB board and at least one Mini LED chip. The first pad on the PCB is provided with a first solder resist, and the second pad is provided with a second solder resist. The positive electrode pad of the Mini LED chip is connected with the first pad, and the negative electrode pad of the MiniLED chip is connected with the second pad. The Mini LED chip is positioned between the first solder resist and the second solder resist, and has a first gap between the Mini LED chip and the first solder resist, and a second gap between the Mini LED chip and the second solder resist. The Mini LED module and the manufacturing method thereof can effectively improve the mounting yield of the Mini LED chip and reduce the accumulated tolerance of the Mini LED chip mounted on the large-size PCB board.

The invention discloses a clamping mechanism, a base with the clamping mechanism and a notebook computer for connecting a first part and a second part in a pivoted manner, wherein the first part is provided with a clamping groove; the clamping mechanism comprises a rotating shaft and a clamping part; the rotating shaft is fixedly connected with the second part and is provided with an external thread; the clamping part is plugged with the clamping groove to form clamping; one end of the clamping part is in threaded connection with the rotating shaft, and the other end of the clamping part is provided with a clamping hook; when the clamping part is inserted into the clamping groove and rotates together around the rotating shaft under the driving of the first part, the clamping hook and the clamping groove are clamped or unclamped while the clamping part moves in an axial direction of the rotating shaft. According to the clamping mechanism, a button and accessory structures are removed, the occupied space is reduced, a product can be thinned, and the manufacturing cost is reduced; and besides, the clamping mechanism can be modularized, thus, the whole machine assembling operation is facilitated, multiple assembling processes are not required, the yield can be improved and the assembling efficiency of an operator can be improved.

The invention belongs to the technical field of lithium batteries, and particularly discloses a preparation method of a multi-tab battery cell, the multi-tab battery cell and a multi-tab battery thereof. The preparation method comprises the following steps of S1, coating active slurry: evenly coating the surface of a pole piece with the active slurry in a zebra coating mode and rolled, and preparing a first pole piece; S2, slitting the pole piece: slitting the first pole piece to obtain a second pole piece; s3, performing die cutting on tabs: cutting the edge of the second pole piece to form a plurality of first tabs; s4, tab cleaning: cleaning the dressing area of the first tab; S5, tab dispensing: performing dispensing treatment on the first tab; and S6, winding and/or laminating the second pole piece and the diaphragm to obtain the multi-tab battery cell. During coating, the requirement for alignment of single-face and double-face coating is lowered, so that the requirement for the processing capacity of the previous procedure is lowered, the total slitting frequency is reduced by half compared with that of a traditional mode, the accumulated tolerance of the length size of the pole piece is reduced, the die cutting and winding precision is improved, and the overall energy density of a battery cell is improved.

The invention provides a double-sided adhesive tape punching process. The double-sided adhesive tape punching process comprises the following steps of performing die cutting by using a cutting die, laminating the adhesive surface of a double-sided adhesive tape and a blue film by using a laminating machine to form a material coil, punching by using a first cutting die, punching first positioning holes in the left side and the right side of the material coil, and punching a broken knife edge between the two first positioning holes; punching by using a second cutting die, and punching an inner frame and a second positioning hole of the product on the second cutting die by using the first positioning hole; and punching by using a third cutting die, punching the shape of the outer frame of theproduct on the third cutting die by using the second positioning hole, punching the outer frame into a full-penetration shape, and punching into a single product to obtain a finished product. Compared with the prior art, the double-sided adhesive tape punching process adopts different trepan borings to punch a product structure, reduces accumulated tolerance, ensures that dimensional tolerance values of an inner frame and an outer frame of a product can be easily controlled, can independently adjust the size of the outer frame or the inner frame without correlation change, reduces the mold adjusting difficulty, and saves the mold adjusting time.

The invention discloses a laser direct light control device for a coating machine. The laser direct light control device for the coating machine comprises a light source, a signal receiver and a toolpart, wherein at least two film forming bases are arranged on the tool part; the two film forming bases are arranged on the circumference with the center of the tool part as the circle center; at least one film forming base is a monitoring base; and at least one monitoring substrate is arranged on the monitoring base. The laser direct light control device for the coating machine further comprisesa shielding component, wherein the shielding component is arranged on the side, close to an evaporation source, of the monitoring base; a through hole is formed in the shielding component in the thickness direction; and and the shielding component is in running fit with the monitoring base, so that all the monitoring substrates can be exposed through the through holes, and only one of the monitoring substrates is exposed through the corresponding through hole each time. According to the laser direct light control device for the coating machine provided by the invention, the accumulated tolerance of film thickness measurement is reduced, and the measurement accuracy is improved.

The invention discloses a filter which comprises a filter frame and at least two resonators. Two adjacent resonators are coupled. Each resonator comprises a main body part and a bent part. One end ofthe main body part and the filter frame are integrally formed and grounded, and the bent part is formed by bending the other end of the main body part. Through the specific structure of the resonators, the size of the filter is smaller, meanwhile, the cross coupling mode of the filter is simpler, and the filter is more beneficial to the overall performance of a product.

The invention relates to a clamp which comprises a base, a sub-clamp arranged on the base and press plates arranged on the sub-clamp in a stacked manner. The sub-clamp comprises a bottom plate, a cover plate, elastic pieces and a plurality of supporting pieces used for containing workpieces to be machined. The bottom plate is provided with grooves. The cover plate is arranged on the bottom plate in a stacked manner and provided with a plurality of through holes communicated with the grooves, and the elastic pieces are contained in the grooves. The supporting pieces are in clamped connection with the cover plate and penetrate the corresponding through holes respectively. The ends, in clamped connection with the cover plate, of the supporting pieces abut against the elastic pieces. The press plate abuts against the cover plate and provided with a plurality of machining positions matched with the through holes. According to the clamp, the supporting pieces do not need to be independently fastened, the mounting time is shortened, the production efficiency is improved, and the machining precision can be guaranteed.

The invention discloses a lens group and a camera lens module. The lens group comprises a plurality of lenses which are coaxially arranged in sequence. The plurality of lenses include a first lens, asecond lens and a third lens. The second lens is clamped with the first lens, and the third lens is clamped with the first lens. According to the lens group and the camera lens module in the embodiment of the invention, the second lens and the third lens are each clamped with the first lens, optical axes of the lenses are easy to align, and only one integral tolerance exists between the lens groupand a lens barrel, so that the accumulated tolerance between the lenses and the lens barrel is greatly reduced, the assembly precision of the camera lens module is improved, and the quality of imagesshot by means of the camera lens module is improved.

The invention provides a lens used for a short-focus projection machine. The lens comprises a base, a lens assembly, a reflector, a focusing device and a back focus focusing device, wherein an accommodating cavity is arranged on the base; the lens assembly is arranged inside the accommodating cavity; a front light through hole and a rear light through hole are formed in the front end and the rearend, opposite to the lens, of the accommodating cavity respectively; the reflector is arranged on the rear light through hole; the focusing device and the back focus focusing device are arranged on the left side and the right side of the base respectively; the middle part of the reflector is fixed on the base through two lock screws; and the lower side of the reflector is connected with the base through two adjustable screws. The lens is simple in structure, and the reflector is integrated onto the base, so that the quantity of components of an adjusting structure of the reflector is reduced,and then the assembling accuracy is improved; moreover, the reflector is positioned by adopting a four-point connection method and is positioned by using two points, and the other two points are movably adjusted, so that the degree of freedom of the reflector is reduced, and the adjusting accuracy is greatly reduced.

A portable inversion gasoline generator set is disclosed, comprising a shell and an engine assembly arranged in the shell. The engine assembly comprises an engine, a generator, a carburetor arranged on a cylinder head of the engine and an air filter connected with the carburetor. The portable inversion gasoline generator set is characterized in that the shell includes a rectangular enclosure framewhich is defined by a front cover shell, a rear cover shell, a left side plate and a right side plate and fixed through connecting pieces, and an oil tank fixed to the top of the rectangular enclosure frame; a plurality of upper supporting pipes and a plurality of lower supporting pipes are fixed between the left side plate and the right side plate; the upper portion and the lower portion of theengine assembly are fixed to pipe connecting pieces and are fixed to the upper supporting pipes and the lower supporting pipes respectively through the pipe connecting pieces; the air filter is fixedly or integrally arranged on one of the left side plate and the right side plate close to the carburetor; and an air outlet of the air filter is connected with an air inlet of the carburetor through anelastic hose. An existing inner supporting frame is omitted, the accumulated tolerance between components is reduced, the whole body is easier to assemble, and better anti-seismic property and working stability are achieved.

The invention discloses a lens regulation module which comprises a base, a bearing disc, a lens and a regulating device, wherein the bearing disc can be movably arranged on the base, the lens is fixedon the bearing disc, the regulating device comprises a shell, a worm, a transmission gear and a transmission part, the shell is fixed on the base, the worm is pivoted to the shell, the transmission gear is pivoted to the shell and meshed with the worm, and the transmission part is fixed at the transmission gear and connected to the bearing disc. When rotation of the worm drives the transmission gear to rotate, the transmission gear drives the transmission part to lead the bearing disc to move along the axial direction relative to the base. A configuration mode of the components of the lens regulation module can satisfy different needs of designers to space planning.

The invention discloses a display panel module comprising a substrate, a flexible circuit board, a silicon-based liquid crystal panel and a surface cover, wherein the substrate is provided with a splicing zone on the surface of the substrate; the flexible circuit board is configured on the substrate and is provided with an opening used for exposing the splicing zone; the silicon-based liquid crystal panel is provided with a lower surface and an upper surface; the lower surface of the silicon-based liquid crystal panel is fixed on the substrate splicing zone exposed from the opening by a splicing layer and is electrically connected to the flexible circuit board; the surface cover is configured on the silicon-based liquid crystal panel and is used for restraining the display area of the silicon-based liquid crystal panel and shielding stray light; and the surface cover is provided with a displaying opening which exposes a displaying zone on the upper surface of the silicon-based liquid crystal panel.