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A manual solder picker is a tool used to repair electrical appliances and collect solder that melts when disassembling pad electronic components. How to use the manual solder suction methodThe inside of the manual solder suction has a spring, when using, press the slide rod at the end of the suction pot until you hear the "click" sound, which indicates that the solder suction has been fixed. Then use a soldering iron to heat the butt point to melt the solder on the contact, and at the same time bring the solder suction device close to the contact, and press the button on the solder suction device to suck the solder on.
If you don't suction it once, repeat the above steps.
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The buttons have bulges.
There are depressions underneath.
If you press it, it will sink into the depression.
It has a spring oscillator for the recovery of force.
The force of the depression is greater than the recovering force of the spring oscillator and keeps the spring compressed.
Press it again, after the bulge leaves, the recovery force of the spring oscillator works and at this time, the upper end of the bulge is in a streamlined shape, which greatly reduces the resistance, so that it will not be blocked by the depression again in the process of recovery.
that's all
You added another question.
It's so simple, find a pen, 5 dimes, dismantle it, and you can see it in more detail.
In fact, this kind of problem is to discover it yourself and find precedents.
The ballpoint pen is a finished product, and the various parts are already very mature, and if you can remove it and look at it, you will feel the perfect design.
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The name is: straight key spring switch, press straight key switch, external spring key switch. The purpose is to press the lock, and then press the spring again.
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You can inquire about the locking principle of the alternate switch, the end of the button and its connecting rod is provided with a movable stop pin, the movable end of the stop pin is placed in the positioning slideway by elastic force, the slideway plays a role similar to the cam groove, when the button is pressed, the movable end of the stop pin moves to the lowest position along the slideway and falls into the low position positioning point of the slideway here, and the return spring of the button makes the movable end position here after letting go. When pressed again, the slideway along the inclined plane of the active end leaves the positioning point and returns to the high position along the return slideway under the action of the return spring. The basic principle is the principle of cam control.
There are also self-popping TF card holders, SD card holders, some mobile phone SIM card holders, TV power switches, etc., all of which are products made with similar principles.
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The first floor explains the principle of the garden ballpoint pen in more detail! But this principle only applies to longitudinally locked structures. If it is necessary to lock along the circumferential direction, it is necessary to adopt a stepped hole structure on this basis, adopt a locking pin locking, wherein the large hole is at the bottom, the small hole is at the top, the small hole is provided with a locking pin groove, the locking pin is above the spring, and the locking in the circumferential direction is completed by pressing and rotating.
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Just use a button switch to OK——— turn on or off.
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You can design one yourself according to the principle of the ballpoint pen, which involves the calculation of the anti-self-locking angle
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It's a bit like an automatic snapback buckle. Used on the cabinet door, after installing this thing, the door is closed, you press the door panel, and the door opens; You press the door panel again and the door closes.
Meng Tian of the Qin Dynasty invented the brush.
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This is still very possible, because the security of the suitcase is not very high.
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01278050 to 00159786 that process is wrong, it should be 00158755, you can try it.
The original first choice of the notebook of about 5000 yuan is Lenovo's Y450A series of notebooks, because this series of notebooks is super cost-effective, and they are generally equipped with mid-to-high-end independent graphics cardsGT240M, which makes this series of notebooks can kill almost all games, so it is very popular to buy, and it is still a good choice for people to choose notebooks. So if you like Lenovo's laptops, then I suggest you first consider Lenovo's Y450A-TSI notebook, this notebook** is around 4700 yuan, but the configuration is quite high, in addition to GT240M high-end independent graphics card, it is also equipped with Core 2 dual-core T6600 processor, 2G memory, 320G hard disk, *** burning optical drive, 1.3 million pixel camera, Bluetooth and wireless network card and other functions are also available, It can be said that it is an all-round champion of about 5,000 yuan. Therefore, it is recommended that you consider this notebook first. >>>More