Hardware Knowledge Base: "Screwdriver"

definition:

Tighten or loosen the tool with a slotted or Phillips head screw.

Screwdriver, Screwdriver

A tool used to twist a screw to force it into place, usually with a thin wedge-shaped head that fits into the slot or notch of the screw head - the scientific name "a screwdriver." There are two main types (negative sign) and cross (positive sign). There are also common hex screwdrivers, including two kinds of hexagonal and hexagonal.

The screwdriver is divided into a traditional screwdriver (English: Screwdriver) and a ratchet screwdriver (electric screwdriver) (English: Ratchet screwdriver). Traditional screwdrivers consist of a plastic handle plus an iron bar that locks the screw, while ratchet screwdrivers consist of a plastic handle plus a ratchet mechanism. The latter allows the iron bar of the locking screw to idle clockwise or counterclockwise, so that the efficiency of the locking screw can be promoted by the idle function without having to successively turn the power driver (hand) back to the original position.

usefulness:

When the phone is repaired, a screwdriver is needed to open the case (some phone cases are snap fastenerless). The screws are mostly made of Hexagon Socket Screws; different mobile phones have different specifications, generally T5, T6, T7, T8, etc. Some models are also equipped with special screws, need a special screwdriver. Also need to prepare some small one-word, small plum screwdriver. In the selection of such tools, A, B kits can be selected, it includes almost all mobile phone shell tool.

When opening the case, use a suitable screwdriver according to the type and size of the fixing screws on the case. If it is not selected properly, the screw groove may be flattened and slipping may occur.

usage

Fix the screwdriver with a special-shaped tip at the top of the screw, fix it, and start rotating the handle.

According to the specification, clockwise rotation is tight; counter-clockwise rotation is loose.

Slotted screwdrivers can be applied to Phillips screws. However, the Phillips screw has a strong resistance to deformation.

Screwdriver type

1, ordinary screwdriver

Screws that are made with the handles are easy to prepare and can be used as long as they are available. However, because screws have many different lengths and thicknesses, it is sometimes necessary to prepare many different screwdrivers.

2 combination screwdriver

A screwdriver that separates the screwdriver bit from the handle, and when installing different types of screws, simply replace the screwdriver bit and you do not need to stock a large number of screwdrivers. The advantage is that space can be saved but it is easy to lose the screwdriver head.

3, electric screwdriver

Electric screwdrivers, as the name suggests, use electric motors instead of human hands to install and remove screws, usually a combination screwdriver.

4, watch screwdriver

Belong to precision screwdrivers, commonly used in the repair of hand strap type watches, so this is called.

5, small diamond screwdriver

Head shank and body length are smaller than the commonly used screwdrivers, non-clocking screwdriver.

From the structural shape, there are usually the following:

1, straight. This is the most common kind. The head model has one word, cross, meter, T (Plum), H (hex), etc.

2, L-shaped. More common in hex screwdrivers, use their longer rods to increase torque, which is more labor-saving.

3, T-shaped. Automotive industry more applications.