Bluetooth wireless keyboard and mouse set capable of pairing and connecting multiple devices at time

The utility model relates to the technical field of wireless keyboards. The utility model discloses a Bluetooth wireless keyboard and mouse set capable of being connected with multiple devices throughone-time pairing. Wireless keyboard comprising a wireless keyboard body, two fixed blocks are fixedly mounted at the top of the wireless keyboard main body; a movable rod is hinged to the opposite sides of the two fixing blocks, a protection plate is fixedly installed outside the movable rod, two limiting grooves are formed in the front face of the wireless keyboard body, and two cushion blocks are fixedly installed on the front face of the protection plate. The utility model discloses a Bluetooth wireless keyboard and mouse set capable of being connected with multiple devices in one-time pairing. A protective plate is mounted on the movable rod; the keyboard achieves the purpose of covering the protection plate to prevent dust from falling into key gaps when the keyboard is not used, achieves ...

USB wired keyboard supporting multiple USB expansion ports

The utility model relates to the technical field of keyboards. The utility model discloses a keyboard, and discloses a USB wired keyboard supporting multiple USB expansion ports. Keyboard comprising akeyboard body, an indicating lamp is fixedly mounted at the top of the keyboard main body; a connecting wire is fixedly installed on the top of the keyboard body and located on the right side of theindicator lamp, an extension block is fixedly installed on the right side of the keyboard body, two USB interfaces are formed in the right side of the extension block, and a positioning block is fixedly installed on the right side of the keyboard body and located on the top of the extension block. The utility model discloses a USB wired keyboard supporting multiple USB expansion ports. An extension block is arranged on a keyboard main body; according to the keyboard, the positioning block is hinged to the expansion block, the protection cover corresponding to the expansion block is hinged to the ...

Corn viscose blended yarn and preparing method thereof

The invention discloses a zein viscose blended yarn and a preparation method thereof, comprising the following steps: main materials, namely, zein fibers and viscose fibers, are mixed according to a certain proportion, and a finished product is prepared by the steps of cotton cleaning, cotton carding, drawing, roving, spinning, winding, twisting and reeling. The invention adopts zein and viscose to be blended into yarn, and prepares an environment-friendly and degradable zein viscose blended yarn with the advantages of clear yarn evenness, soft texture, fullness, air permeability in dressing and sweat absorption, thus being suitable to be prepared into fabrics which can be closely worn by people of different ages all around the year.

Hydraulic oil circuit for reversing control of automatic transmission

The invention discloses a hydraulic oil circuit for reversing control of an automatic transmission, belongs to the technical field of automotive transmissions, and solves the technical problems of obvious impact feel, short transmission life, high maintenance and repair costs and poor driving feel of a driver in a shifting process due to over-high oil pressure in a control oil circuit during reversing of an existing automatic transmission automobile. The hydraulic oil circuit is characterized in that the operations of adjusting the pressure and switching the oil circuit are carried out through solenoid valves, and the input main oil pressure is reduced and output to reversing execution elements. The hydraulic oil circuit is simple in structure and reasonable in design; the oil circuit is switched and the main oil pressure is adjusted to be relatively low under the control of the solenoid valves; the oil pressure is controlled to be within a relatively low range under the reversing working ...

Wireless numeric keyboard supporting multiple USB expansion ports

The utility model relates to the technical field of electronic equipment. The wireless numeric keyboard supporting the multiple USB expansion ports comprises a numeric keyboard body, a signal lamp isfixedly connected to the top of the numeric keyboard body, keys are movably connected to the front face of the signal lamp and located at the top of the numeric keyboard body, and a top clamping plateis fixedly connected to the left side of the numeric keyboard body. The utility model discloses a wireless numeric keyboard supporting multiple USB expansion ports. A top clamping plate and a bottomclamping plate are arranged on the left side of a numeric keyboard main body; a movable baffle is movably connected between the top clamping plate and the bottom clamping plate; the movable baffle canconveniently move left and right between the top clamping plate and the bottom clamping plate; according to the numeric keyboard, the three USB interfaces are arranged between the top clamping plateand the ...

High-temperature alarming device in car engine room

The invention provides a high-temperature alarming device in a car engine room, belonging to the technical field of cars and solving the problem that the traditional engine alarm can not remind maintenance personnel that the surface temperature of an engine is higher to cause injury to the hands or face of the maintenance personnel. The high-temperature alarming device in the car engine room comprises a temperature sensor for detecting the surface temperature of the engine, a controller and an alarm, wherein the temperature sensor and the alarm are both connected with the controller; the controller is also connected with an action detecting unit arranged in the engine room; the action detecting unit can be used for detecting whether an object is close to the surrounding of the engine or not and sending a signal to the controller; and the controller can send a control signal to the alarm for alarming when the controller receives the information that the temperature detected by the temperature ...

Production method of jhouta and dacron blended yarn

The invention discloses a method for producing the blended spinning of jute and terylene. The method comprises the following steps that: firstly, the jute is added with 10 percent of water and 5 percent of softener and preheated for 24 hours; the jute and the terylene are picked up according to a proportion and subjected to the working procedures of scutching, cotton carding, drawing, coarse spinning, fine spinning, and cheese winding; in the step of cotton carding, the striking times is 480 rmp and the carding time is twice; when impurities in the jute and chemical fibre are treated, a cotton-type sieve for cotton carding is A86C; a separation degree of the fibre is between 1.2 and 0.7 tex; in the step of coarse spinning, the twisting number of coarse yarn is between 80 and 85; and in the step of fine spinning, a relative humidity of fine yarn is between 65 and 70 percent. A jute product produced by adopting the technology changes the weakness of coarseness and hardness of jute fibre, ...

Pile-pulling construction method

Asynchronous wireless numeric keyboard suitable for computer

The utility model relates to the technical field of wireless numeric keyboards. The utility model discloses an asynchronous wireless numeric keyboard suitable for a computer. The keyboard comprises akeyboard body, keys are movably mounted on the front surface of the keyboard body; a mounting cylinder is fixedly mounted at the top of the keyboard body, a shaft seat is fixedly mounted on the left side of the mounting cylinder, a shaft cylinder is fixedly mounted on the right side of the mounting cylinder, a hollow cylinder located outside the shaft cylinder is fixedly mounted on the right sideof the mounting cylinder, and a connecting shaft sleeve is fixedly mounted on the right side wall of an inner cavity of the hollow cylinder. The utility model discloses an asynchronous wireless numeric keyboard suitable for a computer. And meanwhile, when the keyboard cushion is not used, the positioning shaft rod is rotated to enable the shaft rod to rotate reversely to wind the keyboard cushionunder ...

Hoisting jack pulling method for double-circle shield-driven tunneling

Steel structure H-shaped steel manufacturing tool

According to the H-shaped steel manufacturing tool for the steel structure, the manufacturing tools such as the vertical plates, the buckles, the wedges and the adjusting lead screws are adopted, the problem that the number of working faces is small is solved, meanwhile, the working procedure problem that an assembly machine can only assemble a T shape at first and then assemble the T shape into an H shape at a time is solved, manufacturing is easy, using is convenient, one-time assembly forming is achieved, and working efficiency is greatly improved.

Novel automatic gearbox hydraulic pressure cooling and lubrication oil circuit structure

The utility model provides a novel automatic gearbox hydraulic pressure cooling and lubrication oil circuit structure, relates to a derailleur hydraulic pressure cooling and lubrication oil circuit structure. The utility model discloses a solve present oil circuit cooling circulation, hydraulic oil viscosity is high when oil temperature is lower, the circulation is poor, through cooler systemic circulation flow losses are many and oily temperature rise height is slower, appear easily when the cold start operating mode that the reaction is slow, the lubrication harmfully, the unstable problem of oil pressure. The utility model discloses a second oil circuit passes through the inlet connection of second check valve and third oil circuit, is connected with the cooler on the third oil circuit, and the tributary of lubricated oil circuit is connected to the exit end of third oil circuit, and the oil feed side -mounting of third oil circuit has front end bypass oil circuit, and front end bypass ...