36results about How to "Low production precision requirements" patented technology

The invention discloses a slide linkage structure for drawers, which comprises a drawer side plate, the inside of the drawer side plate is provided with a panel adjusting device, the front and rear side plates of the bottom part of the panel adjusting device are respectively provided with a stop hook for preventing a movable rail of a slide rail from going forward and a locking dog for preventing the movable rail from drawing back, and the stop hook and the locking dog are protruded from the bottom part of the drawer side and connected with the movable rail; the front end of the top part of the movable rail is inserted into the stop hook, the front end face of the movable rail is pressed against the internal end face of the stop hook, and a position which is arranged at the rear part of the front end face of the movable rail and corresponding to the position of the locking dog is provided with a backstop hole; and a gap eliminating component is arranged between the front end face of the movable rail and the internal end face of the stop hook. The gap eliminating component is at least arranged on the internal end face of the stop hook; or the gap eliminating component is at least arranged on the front end face of the stop hook. In the invention, the gaps between the front end face of the movable rail and the internal end face of the stop hook are eliminated by using the gap eliminating component, thereby ensuring the reliability of linkage between the drawer side and the movable rail. The slide linkage structure for drawers disclosed by the invention has the advantages of simple and reasonable structure, reliable linkage, not rocking, zero gap, low production precision requirements, and long service life.

The invention discloses a dual-frequency microstrip antenna applied to a wireless capsule?endoscope. The microstrip antenna is attached to the outer wall of the capsule of the wireless capsule?endoscope. The dual-frequency microstrip antenna applied to the wireless capsule?endoscope is characterized in that the microstrip antenna comprises a feeder terminal, an outer loop antenna part and an inner loop antenna part, wherein the feeder terminal serves as the input end of the microstrip antenna; the outer loop antenna part and the inner loop antenna part are electrically connected with the feeder terminal; the length of the outer loop antenna part is corresponding to the full wavelength of the center frequency of a first desired frequency band; the length of the inner loop antenna part is corresponding to the full wavelength of the center frequency of a second desired frequency band; the inner loop antenna part is embedded inside the outer loop antenna part; and the center frequencies of the first desired frequency band and the second desired frequency band are no more than 1 Ghz. The antenna is a wall-attaching antenna attached to the outer wall of the capsule, the working frequency is lower than 1Ghz, an ultra?bandwidth is provided, the size is small, and the antenna is suitable to work inside the small intestine of a human body.

The invention discloses a composite double-nut lock bolt. The composite double-nut lock bolt comprises an upper gasket, a lower gasket, an upper nut, a lower nut and a screw, and is characterized in that the screw comprises three integrally manufactured and formed parts, including an nut, an upper bolt rod and a lower bolt rod; the thread rotation direction of the upper bolt rod is exactly opposite to that of the lower bolt rod; the diameter of the upper bolt rod is a little larger than that of the lower bolt rod; the upper nut can be screwed on the thread of the upper bolt rod after directlypenetrating through the lower bolt rod; the lower nut is screwed on the thread of the lower bolt rod; the ratio of the upper and lower parts of the screw bolt rod follows the following principles: after the screw bolt rod is inserted into the upper gasket, an upper connecting part, a lower connecting part and the lower gasket in sequence, the upper nut is twisted, and at the moment the rearrest part of the tail of the upper nut is not screwed on the thread of the upper bolt rod but sleeves the thread of the lower bolt rod in a suspension manner; the lower nut is directly screwed on the upper nut; and finally a high-frequency cold welding machine is used for implementing spot welding at 1-2 positions so that the upper nut and the lower nut are connected as a whole.

At present, in the field of industrial control, a control part needs to be manually operated by hands to achieve machine actions, and a gear control rocker serves as an important man-machine interaction tool. At present, many types of control handles exist in the market, and along with the pursuing of the public for green power of electric drive, the electronic gear control rocker can achieve wideapplication space in the future market by the aid of the advantages of high sense of science and technology, small size, low noise, good operation performance, convenience in maintenance and the like, and probably has high tendency of replacing a traditional mechanical gear shifting or control handle. After the control rocker is used for a long time, the defects that a return gap and noise exist,the service life of a torsional spring is short and a middle dead zone is large cannot be avoided. Therefore, the service life of the control rocker cannot reach the expectation, and the control experience and the control effect of workers are finally influenced. The invention provides an available technical scheme to solve the problems.

The invention relates to a self-adaptive automobile cover cap locking mechanism and an automobile cover cap locking system, and relates to the technical field of automobile cover cap locks. The automobile cover cap locking mechanism comprises a fixing seat and a lock pin rod, wherein one side of the fixing seat is used for being fixed to an automobile cover cap; the fixing seat comprises an adjusting cavity; two guide assemblies are oppositely arranged in the adjusting cavity in a spaced mode; the two ends of the lock pin rod are provided with an adjusting end and a locking end respectively; the adjusting end is contained in the adjusting cavity and located between the two guide assemblies; the two side faces of the adjusting end are attached to the corresponding guide assemblies in a sliding mode respectively; and the guide assemblies can move back and forth in the adjusting cavity in the radial direction of the adjusting end, so that the locking end can be aligned with a cover cap lock arranged on an automobile. According to the automobile cover cap locking mechanism provided by the invention, on the premise that the requirement for precision of related parts is lowered, the lock pin rod and the cover cap lock can be ensured to be well aligned, and the problem that the cover cap lock is difficult to open and close is solved.

The invention relates to an implementation system of high-throughput integrated micro-droplet digital PCR (Polymerase Chain Reaction). The implementation system comprises a micro-droplet preparation unit, a PCR amplification unit and a fluorescence detection and analysis unit; the micro-droplet preparation unit comprises a driver, a disturbance device and a micro-droplet generator; the micro-droplet generator comprises an oil phase channel, a sample channel and a detection chamber; the driver generates a driving signal and acts on the disturbance device; the disturbance device generates a speed pulse in an oil phase, and then the oil phase shears a mixed liquid of a sample and a PCR reaction reagent to generate micro-droplets; the micro-droplets are uniformly spread in the detection chamber, and the PCR amplification unit performs PCR amplification reaction on the micro-droplets in the detection chamber; and then the fluorescence detection and analysis unit performs data reading and analysis on the micro-droplets to complete quantitative detection of specific nucleic acid. Rapid preparation of the micro-droplets is realized, the oil consumption is reduced, the dependence of the sizes of the micro-droplets on the size of a fluid channel is reduced, the detection precision and reliability are high, and the cost is low.

The invention relates to a wireless capsule endoscope concave wall-attached antenna and belongs to the technical field of clinical medical auxiliary equipment. The wireless capsule endoscope concave wall-attached antenna comprises a long-cross-line-shaped radiation patch, a left radiation patch area and a right radiation patch area, wherein the long-cross-line-shaped radiation patch is integrallyformed and is attached onto the outer wall of a capsule shell, and the left radiation patch area and the right radiation patch area are located at the same side of the long-cross-line-shaped radiationpatch and form a loop with the long-cross-line-shaped radiation patch; the left radiation patch area includes a left step type radiation patch and a left inverted-L-shaped radiation patch; the rightradiation patch area comprises a right step type radiation patch and a right inverted-L-shaped radiation patch; the left step type radiation patch and the right step type radiation patch are identicalin size and are sequentially arranged around the capsule shell; and the left inverted-L-shaped radiation patch and the right inverted-L-shaped radiation patch are identical in size and arranged around the capsule shell oppositely. According to the wireless capsule endoscope concave wall-attached antenna of the invention, the loop structure is adopted, so that the area of the antenna can be decreased with a large frequency band width maintained, and therefore, the fabrication of the antenna is simplified, the difficulty of attachment can be reduced, and the high data transmission rate andstrong anti-interference capacity of the antenna can be maintained with the size of the antenna reduced.

The invention discloses an industrial production method of cold-soluble black tea powder. Black tea is used as a raw material, tea leaves are extracted to obtain tea juice, a precipitant is added, tea cream is precipitated and then centrifugally removed, carbon dioxide is introduced to adjust the pH value of the tea juice, the tea juice is put into a vacuum tank and vacuumized to remove redundant carbon dioxide gas, and then the tea juice is filtered and clarified through a ceramic membrane. And after desalting with an electrodialysis membrane, concentrating with a reverse osmosis membrane, and spray-drying to obtain tea powder. According to the method, a chemical method is used for preparing the cold soluble tea, control and operation are easy, industrialization is easier to achieve, and the obtained instant tea powder can be completely dissolved in cold water at the temperature of about 10 DEG C and is clear and transparent; the total ash content of the product is less than 5%, which completely meets the standard of cold soluble tea. The obtained tea powder can be directly brewed for drinking, and can also be used as a raw material of a tea beverage.

The invention discloses a mechanical two-position five-way reversing valve. The mechanical two-position five-way reversing valve comprises a body. A valve cavity and a valve core which is arranged in the valve cavity are formed in the body; an exhaust port I, an air inlet and an exhaust port II capable of communicating with the valve cavity are successively formed in one side of the body from left to right; a working port I and a working port II capable of communicating with the valve cavity are formed in the other side of the body; a volcanic vent I is formed between the exhaust port I and the working port I, a volcanic vent II is formed between the air inlet and the working port I, a volcanic vent III is formed between the air inlet and the working port II, and a volcanic vent IV is formed between the exhaust port II and the working port II; a seal ring capable of switching a sealing state between the end surface of the volcanic vent I and the end surface of the volcanic vent II is arranged on the left end of the valve core; a seal gasket I and a seal gasket II are arranged at the right end of the valve core; an end cover is arranged at the left end of the body; an ejector rod is arranged in the end cover; and a main spring is arranged between the ejector rod and the valve core. The invention aims to provide the mechanical two-position five-way reversing valve which reduces the requirement on cleanliness of a working medium and improves the working reliability.

The invention discloses a building electrical cabinet convenient to overhaul and replace. The building electrical cabinet comprises an electrical cabinet body, a mounting mechanism arranged in the electrical cabinet body and a supporting mechanism arranged at the bottom of the electrical cabinet body. And the mounting mechanism comprises a mounting plate arranged in the electrical cabinet body and a transverse plate which is detachably mounted on the mounting plate and is used for mounting various electrical elements. The mounting plate, the transverse plate, the mounting hole groups, the mounting grooves formed in the transverse plate and the mounting screws facilitate detachable arrangement of the transverse plate on the mounting plate, and meanwhile, the transverse plate with a proper size can be selected for mounting according to needs, so that modular mounting and replacement of the element group of the electrical cabinet are facilitated; the purposes of facilitating timely maintenance of the equipment, improving the maintenance efficiency of the electrical cabinet and ensuring the use quality of the electrical cabinet are achieved.

A totally enclosed fluid switch creatively uses a handle, a rotary sleeve, a main shaft with an oblate upper part and a round lower part, a telescope tube, an external bushing of round hole, an external bushing of oblate hole and a combination of an upper end valve plate and a coupling valve plate of lower end (see the attached figure for combination). When the handle rotates left and right, the upper end valve plate is driven to move up and down to realize the switch function. Except a fluid entrance and a fluid exit of the totally enclosed fluid switch, the fluid inside the invention is totally separated from the outside. Because the totally enclosed fluid switch adopts the telescope tube to replace a seal ring for seal and the vertical movement of the upper end valve plate replaces the rotary movement of the valve plate, and besides, the coupling valve plate of lower end and the upper end valve plate form a switch valve plate by the coupling combination, the totally enclosed fluid switch has the advantages of simple structure, easy production, strong leak tightness and low cost, being suitable for the switches taking water, gas and oil as the medium. The service life of the totally enclosed fluid switch is almost not restricted by the using times and is only relevant to the natural service life of the used material.

The invention discloses a liquid outlet device descaling mechanism, a liquid outlet device, a shower head and a faucet, the liquid outlet device descaling mechanism comprises a liquid outlet unit and a driving mechanism capable of moving relative to the liquid outlet unit, the liquid outlet unit is provided with a liquid outlet nozzle, the liquid outlet nozzle is provided with an elastic element, the elastic element is provided with a liquid outlet of the liquid outlet nozzle, and the liquid outlet nozzle is connected with the driving mechanism. The driving mechanism is matched with the elastic element and can movably drive the elastic element to elastically deform through the driving mechanism, and the elastic deformation of the elastic element can promote scaling accumulated in the liquid outlet nozzle to fall off. The descaling device has the advantages that descaling can be achieved by only driving the elastic element to deform through the driving mechanism, the requirement for the matching precision between the driving mechanism and the liquid outlet nozzle is low, and the requirement for the production precision of the driving mechanism is low; the elastic element is driven by the driving mechanism to deform, limitation of water flow conditions is avoided, and the descaling effect can be improved.

The invention relates to a vibration- and noise-reduced electric-motor device, in particular an electrical domestic appliance and an electrical sliding roof. The invention also relates to a method for the vibration- and noise-reduced operation of an electric-motor device, the electric-motor device comprising an electric-motor assembly (I), a main body (II) and a driven working group (III), the electric-motor assembly (I) comprising an electric motor (1), a control and evaluation unit (2), a data memory (3), a current regulator (4), a rotor angle sensor (5) and a torque evaluator (6), and the electric motor comprising a stator (7), a rotor (8) and motor coils (9). According to the method, a setpoint current stored in a value table in the data memory (3) is applied to the motor coils (9) in accordance with the rotor angle. The torque deviation resulting, at said setpoint current, between the setpoint torque and the actual torque is determined, and an optimized new setpoint current value is calculated by means of interpolation and is written into the value table.

The diamond material and diamond composite material ball valve comprises a valve body and a spherical valve element, a valve cavity is formed in the valve body, a first rough surface is arranged on the surface of an inner cavity of the valve cavity, a second rough surface is arranged on the surface of the spherical valve element, a first diamond composite layer is arranged on the first rough surface, and a second diamond composite layer is arranged on the second rough surface. A second diamond composite layer is arranged on the second rough surface, a vertically upward valve rod penetrating through the valve body is arranged on the spherical valve element, and a positive pressure sealing mechanism is arranged between the valve body and the valve rod; the inner wall of the valve cavity is provided with an inflation sealing mechanism for sealing the joint of the valve body and the valve cavity. According to the invention, the wear resistance and corrosion resistance of the valve cavity are effectively improved, so that the service life of the valve body is prolonged, the leakage phenomenon between the valve cavity and the spherical valve core is avoided, and meanwhile, the production precision requirements of the valve cavity and the spherical valve core are reduced.