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I. Common knowledge about watch

Release time:2019-01-10


I. Common knowledge about watch

1.   Outer parts of a watch mainly include

•      1.1 Case

•      Body: Main part of the case

•      Bezel: Connected to the body through the interference fit, and equipped with a waterproof rubber ring (O-ring);

•      Back: Screwed together with the body by its own thread, or pressed fit together, locked by screws, and equipped with a waterproof rubber ring (O-ring);

•      Glass: Pressed together with the frame by a waterproof rubber ring (I-ring);

•      Crown tube: Screwed together with the body by its own thread, or joined with the body through an interference fit;

•      O-ring: A waterproof rubber ring in the shape of the English letter “O”;

•      I-ring: “I” shaped waterproof rubber ring for crystal gasket.

•      1.2 Bracelet

•      Chain body: There are many links or beads that are connected together by pins;

•      Clasp: It is convenient for users to extend the bracelet when wearing the watch. Generally, there are butterfly buckles, button butterfly buckles, folding buckles, button folding buckles and standard buckles, etc.

•      Lug: A spacer when the case and the bracelet are connected;

•      Spring bar: Used to connect the case and the bracelet;

•      3.    The crown is used for manual winding, adjusting time and calendar, etc., and is matched with the crown tube by the waterproof rubber ring;

•      4.    The dial is marked with time scale, brand LOGO, etc.;

•      5.    The hands include hour hand, minute hand, second hand and other functional settings.

 

2.   Sapphire crystal and mineral crystal

SAPPHIRE CRYSTAL is artificial, not natural, since natural sapphire is rare and cannot be mined in a large amount for watchmaking; and natural sapphire is opaque, not suitable to be used as watch crystal. This sapphire crystal is made of high-purity alumina at a high temperature. The hardness of sapphire treated by this process is Mohs 9, second only to diamond, and the quality is stable, the transparency is good, and it is scratch-resistant (but violent impact should nonetheless be avoided).

MINERAL CRYSTAL is an inorganic glass after intensive treatment and enhancement of hardness, with the hardness of Mohs 5, which is characterized by wear resistance, impact resistance and high transparency.

 

3.   Stainless steel case and bracelet

In addition to wear resistance, the stainless steel case and bracelet are characterized by rust prevention, corrosion resistance, antimagnetic, high strength, environmental-friendly (not susceptible to skin irritation when worn), etc.

4.   Calendar window

Refers to the use of a calendar to display the date on the dial in the form of a window, which is different from the structure in which the date is displayed with a setting.

5.   Screw-in crown

A special crown designed for diving watches and other highly waterproof watches. The crown is screwed onto the crown tube of the case. When it needs to adjust the time and tighten the spring, the crown must be screwed out.

6.   Mechanical watches

•      The mechanical watch is mainly composed of: The power mechanism, that is, the mainspring and the winding mechanism; Train; Speed governing mechanism, i.e., escapement system and balance wheel assembly; hands and time adjusting mechanism.

•      Mechanical watches include manual mechanical watches and automatic mechanical watches. The spring is the power of mechanical watch movement.

•      Manual mechanical watches: By turning the head of the watch, the mainspring in the movement of the watch is fully wound, and the spring is completely released to push the gears to move, pushing the hands to move;

•      The mechanical watch’s kinetic energy reserve standard means after a mechanical watch is manually or automatically wound, the men’s watch could run for more than 36 hours, and the female one could run for more than 35 hours.

•      The principle of full winding test: When a SAGA mechanical watch purchased by a customer undergoes a test at a shopping mall, the shopping assistant needs to manually rotate the head to fully wind the watch, so that the test result will be accurate. Generally, the head is rotated about 20 times in the winding direction to complete the winding.

•      Automatic mechanical watches: The self-winding movement is powered by the weight of the rotor in the movement. When the arm of the watch is swung, it will drive the rotor to rotate, the main spring in the watch to wind and push the watch to move.

 

7.   Quartz watches

There are analog, digital, hybrid, etc. The timepiece function is provided by battery power and quartz oscillation.

Quartz analog watch: The battery power causes the quartz to oscillate, and the stepping motor is controlled by the IC board to push the gear train and rotate the hands, to operate.

Quartz digital watch: The liquid crystal film is used to display the time.

 

Q: What is the difference between a mechanical watch and a quartz watch?

A: The mechanical watch relies on the spring winding to provide power and is timed by the train. Due to the complicated structure, the phenotype is thick and heavy. Because of the characteristics of the travel time principle, it is subject to the influence of gravity, mechanical friction, temperature change, use, etc., so the error is larger than the quartz watch.

The quartz watch is powered by a battery, and the extremely stable high-frequency vibration of the quartz crystal is used as a reference for time. Therefore, the quartz watch has a relatively accurate travel time and a relatively low cost, and is cost-effective. Of course, although the appearance of quartz watches has a great impact on traditional mechanical watches, it still cannot completely replace mechanical watches. Many men or collectors still like the traditional sense of mechanical watches.

 

Q: Which is better, quartz watch or mechanical watch?

A: Each has its own characteristics.

Quartz watch is accurate, stylish and lightweight, and the battery is changed once about 2-3 years. This is also the best time for the watch to be routinely maintained, such as replacing the waterproof rubber ring that begins to age, to prolong the life of the watch.

The mechanical watch has a complex structure, rigorous design and exquisite workmanship. It has strong appreciation and collection value. It is completely mechanized, self-powered and regularly maintained.

 

 

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