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The handle is used to open and close metal window sashes. It is generally installed in the middle of the edge of the window sash, and some are also designed to be connected with the bolt to move the door and window hardware. It is made of brass, low carbon steel, zinc alloy, stainless steel and other materials, with nickel, chromium or zinc plating on the surface. Because of its excellent plasticity, it can be designed into a variety of shapes, colors and functions, and design products with different shapes and functions. So what are the hands on the market? What kinds of handles are there? Germany Youjin hardware today mainly introduces 5 kinds of door and window handles.

1. Seven character handle

Because of its similar shape, it is called seven character handle. It is an accessory of doors and windows, and is widely used in aluminum alloy and plastic steel doors and windows. The seven character handle has high safety performance. It is designed according to ergonomics, with the opening action of human instinct, providing unprecedented simple operation function.

2. Fork handle

The handle is made of die-casting aluminum alloy, and the base and fork are made of die-casting zinc alloy. The handle is symmetrically distributed, the handle can rotate 180 ° and the fork can change direction at will, which can fully meet the requirements of doors and windows with different specifications, such as the inner side hung window, etc. the length of the fork is determined by the profile section.

3. Square shaft handle

The square shaft handle adopts high-quality standard raw materials and high-tech precision manufacturing technology to ensure the high quality of products. This series is a new door lock opening series derived from new technology. By changing the position of the handle to achieve a variety of opening functions, easy to operate, simple and impact resistant. The lock itself has encryption function, which is difficult to copy and has high security performance. It is designed according to ergonomics, with the opening action of human instinct, providing unprecedented simple operation function.

4. Double side door handle and lock handl

The handle of double-sided door adopts zinc alloy die-casting, which has beautiful appearance and ensures the consistency of door appearance as far as possible. The rotation angle of the movable card's clamping position and the gear point control handle in the panel is realized by the shrapnel. When installing the double-sided door handle, the length of the square shaft of the screw is selected according to the thickness of the profile fan material. The screw specification: M5x (thickness of the fan material + 20mm), the length of the square shaft: the thickness of the aluminum profile fan material is 25mm.

5. Linkage handle

A new set of door locks is derived from the new technology. By changing the position of the handle to achieve a variety of opening functions, easy to operate, simple and impact resistant. It is designed according to ergonomics, with the opening action of human instinct, providing unprecedented simple operation function. The simple operation linkage handle can make the outside of the window sash turn to the interior, making the cleaning of the outer surface of the window convenient and safe.

The air expansion shaft is a special winding and unwinding shaft, that is, the shaft whose surface (key bar) can protrude after high-pressure inflation, and the shaft whose surface (key bar) retracts rapidly after deflation. Its name is diversified. It is also called air pressure shaft, expansion shaft, expansion shaft, expansion roll, inflation roll, pressure shaft, expansion roll, etc. Although there are many names, the working principle is the same The use of air expansion shaft and air expansion sleeve is very convenient and fast. You only need to provide your own air source. The air pressure is controlled within the range of 6-8kg/cm2. If you need to lock external parts (such as round paper tubes), you can complete as long as the air gun inflates against the dehumidifier air nozzle on the air expansion shaft. The key bar will protrude against the external parts (such as round paper tubes). When you need to loosen the paper unloading, press the sliding air core on the air nozzle to deflate, The key bar will return to its original appearance, and the external parts (such as round paper tubes) can be taken out of the professional production inflatable shaft for maintenance.

The air expansion shaft is a special winding and unwinding shaft, that is, the shaft whose surface can protrude after high pressure inflation, and the shaft whose surface rapidly retracts after deflation is called the air expansion shaft. The inflatable shaft has a wide range of uses. Any machine with winding, unwinding and slitting can use the inflatable shaft. The commonly used industries include packaging, printing, and even light metal industries, which can be said to have a wide range of uses.

The common accident of the inflatable shaft is mainly the leakage. Once the leakage occurs, the machine may not operate normally. There are five possibilities for leakage of the inflatable shaft:

1. There is a gap in the sealing ring. Install the sealing ring and apply a ring of sealant.

2. The air nozzle leaks, and the air nozzle is not installed properly. Just replace it with another air nozzle.

3. The rubber tube leaks. This phenomenon is that the quality of the rubber tube itself is not up to the standard. After it is installed, it will leak after inflation.

4. The pressure ring is loose. It is easy to tighten the pressure ring of the dehumidifier.

5. The rubber tube is broken. If this is the case, it will be troublesome. You need to remove the shaft head and replace it with a new rubber tube.