Some time ago, I got the latest lithium battery version of the Bosch's latest lithium battery version of the electric screwdriver Bosch Go (currently price 249RMB). After a period of use, it is indeed very practical. Although some problems have been found in the use, but for often do not take the drum For a friend of a household appliance, Bosch Go does not losing a good assistant, can help you solve a lot of problems, save a lot of strength; at the same time, because the BOSCH Go is really curious, it is not used to disassemble it once, internal It is related to the components of precision machining. It is integrated. It does not loses a high-quality home electric screwdriver tool. Therefore, write this article to share with everyone.
Exterior
As we all know, Germany's industrial industry is highly developed, especially those in the field of precision processing, has always made the Chinese people, and Bosch as a famous manufacturer in Germany, mainly positioning and precision machinery and electrical engineering, so Bosch Go electric screwdriver This product is also Dry old Bank, professional technology is definitely hard, and to see the real product.
↑ Bosch GO electric screwdriver toolbox, front Bosch logo is eye-catching, looks tall.
↑ back.
↑ Side has a specific specification of the Bosch GO electric screwdriver, 3.6V rated voltage, 2.5 ~ 5N.m (Nimmy, torque unit, the strength of the power arm, how much the torque is, there will be actual descriptions), carry 1 ~ 6 gear torque adjustment. There are also different torque adjustments on this gadget, and it is rare.
↑ Open the toolbox, 咦? Didn't you see a drill bit?
There is Qiankun in the ↑, the drill has a special storage box, and there is an extension rod, 32 short bulls.
↑ 32 short batches include 12 cross batch, 4 first batch, 6 square heads, 4 internal hexagons (ordinary), 6 plum blossom (ordinary), other no, feel the batch Some less.
↑ Bottom specifications, support the maximum screw diameter of 5mm, suitable for home use, application scenarios such as socket, household appliances, self-tapping screws, etc.
↑ Interior accessories list: a Bosch GO electric screwdriver; one / strip charger / microousb charging cable; an extension rod, 32 batch.
↑ Charger Specifications 5V / 1A, China Manufacture (I can't leave my big Chinese manufacturing, this is actually a contradiction between Malaysia to make some contradictions on the box, may just refer to the Bosch Go electric screwdriver is Malaysia manufactured), full The Bosch Go's battery takes 90 minutes.
↑ Bosch Go electric screwdriver, deep blue plastic and soft rubber combination, although the appearance is in the rules, but the grip is more comfortable, and the mixed soft plastic increases the friction of the palm, effectively prevents slipping, easy to use. A manual switch can also be seen on the Bosch Go, 3 gear adjustment, the intermediate correspondence mode, tighten forward, backward to loosening; side of the electricity display block with three LED combinations.
↑ The back of the Bosch Go has some parameters. When the rated voltage is 3.6V, the speed of the load is about 360 times per minute, and we can also see this product is still very new, the factory dates are September 2017.
The top of the Bosch Go is a hexagonal collet.
↑ ↑ 内 与 批 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式 方式
↑ Bosch Go has a torque adjustment dial and a MicroSB charging interface (hidden design). Torque adjustment turntable, although there is a 1 ~ 6 gear position, but when you are rotating, you can't feel a clear gear switch. You can even turn to several gear positions of the marked, and it is determined to be a stepless torque. Adjustment may be a resistor.
The 6-speed torque 1 gear is 6th, the 6th file is the largest, but when the author's experience, even if there is a torque that is not fully released, it feels that this torque adjustment can also be designed, and other in addition to 1 There is a significant difference from the 6-speed torque adjustment, and the differential torque adjustment is not obvious.
Experience
The entire BOSCH GO product is like this, and the external operational function is relatively small. After understanding, it is relatively simple, and the learning cost is low. But for users who first contact Bosch Go, the first use may be not so simple, you can't even let it work.
Bosch Go uses a hidden lower-pressed launch switch. That is to say to set the tightening of the handle / loose regulation switch, then install the batch, stand the screw that needs to be tightened or loose, when the batch is Bosch Go will start when it is pressed. The problem is that there is no relevant note in this product, causing your face when you use it, it may be doubt whether there is no electricity, or the battery is insufficient, or it is bad, and you will die.
Of course, after using it, everything is natural, first look at a simple use of video, what will I do in actual use?
↑ Video, I believe everyone has found a big problem. If you need to tighten the screws short enough, you need the torque than 2.5 Nimi, if you use Bosch Go to operate, it will be due to the set torque At the end, it will lead to it. This also answers the problem of the article in the article, how much is the torque adjustment of 2.5 ~ 5 Nm? At least on the product of Bosch Go, you can't hold it! The result of forcibly grip may sprain your hand (at this time, for safety, the appropriate letters are a beauty).
This is also the biggest problem found when I actually use BOSCH GO. After familiarity, the old driver has a lot of homes, but it can be a little bit, but it can't be too loose. There is a degree here. It takes the actual experience to tighten. At the time, even if the torque is not completely released, it is good.
↑, often in the river, how to have no wet shoes, the above is the result of torque is not completely released, which is obvious that the batch has been scarred, and it is a comprehensive way to see Bosch Go's failure is under pressure. The switch start and torque adjustment are adjusted. The lower pressure can be cleaned, and the torque adjustment is not smaller. When the two, there is a case where it is easy to get the screw, of course, it is not necessarily to harm the screw, If you have strong screws enough, that damage may be your batch (laugh), if you want to tighten the plastic screw, please use the manual mode, this is an old driver reminder.
Bosch GO dismantling
Although the experience is not completely satisfactory, the BOSCH GO's under pressure is still more curious. After all, it is a bit antengent design idea to use internal audit?), Must Learn about.
↑ Unpack, unscrew the two 6-angle screws at the bottom, you can clearly see the torque adjustment turntable, McIrousb charging interface, battery.
↑ Discovered only the screws that only unscrewed the bottom or could not take the internal module, and was saved by the switch, took off the switch, and the result was tossing for a half-day discovery or could not be taken (cry).
↑ ↑ 灵, the original top plastic cover can also take off.
↑ Found there is a trunk fixed at the top.
↑ Remove the jacket, everything is so natural, all come out.
↑ Fixed film, spring, jam.
↑ Internal module, from left to right is the gearbox, motor, and board.
The combination of the motor and the gearbox is fixed by a snap. The motor is a boron motor, providing greater torque than ordinary motors, powerful.
↑ Separate the motor and gearbox.
↑ All metal gearbox, there is a metal cover on the gearbox, and the lubricating oil is also very stealing, I don't know what brand.
↑ Removing the metal cover can see the inside of the gearbox, the first stage reduce gear, is indeed a full metal gearbox.
↑ The second-level reduction gear and gear frame.
↑ There is also a third-level reduction gear, 6 self-locking steel columns, effectively prevent slipping, all of the gears are metal parts, gears are also very thick, can be used up, but also guarantee the life of the gear, it can be used.
The gear group is extremely precise. Compared with many plastic gears in the market, the reliability and durability of metal gears are greatly enhanced. According to the pen, most of the advantages of Bosch Go are concentrated in this gearbox.
↑ Bosch GO electric screwdriver motherboard, including control drive.
↑ Ti CSD17573 Power MOSFET, with ultra-low on-resistance 0.84mΩ, greatly reduces loss in power conversion, ensuring service life. The lower pressure-type switch is found next to it. From the perspective, it is actually a "ass" () that directly tops the motor, that is, when the batch is loaded, the front part includes a gearbox, motor assembly Top, turn on the bottom of the motor, and it can be speculated that the top movement is to spend a lot of effort, this is also mentioned above and the big torque. Design concept of the characteristic strap.
↑ The actual operation can be seen, press the down-press switch, the LED display, the circuit is turned on. (Key: vnoald7sh5gl3ptz)
↑ Torque adjustment turntable can be removed, it is indeed a calorie resistor, and it is to adjust the torque by controlling the load current. It has a friend who has DIY experience. It is more resistant to a resistance to the resistor. Is it a larger resistor? It means that you can adjust the torque range?
↑ Samsung's 18650 lithium battery, INR18650-15Q, 1500mAh, which requires about 1 hour and 30 minutes with a matching charger.
↑ The temperature detection sensing of the motherboard is attached to the 18650 battery, monitor the battery temperature.
↑ The main controller is a domestic local enterprise product. Shanghai Zhongying Electronics 8051-based 8051 directive 8-bit single-chip microcomputer, the model is SH79F1615, the characteristics of this single-chip microcomputer are integrated with more than two multi-input analog comparators, all the way amplifiers, one 12 The high-speed ADC, and 6 outputs of the 6-output time-free time-controlled motor control PWM module, which is very suitable for direct current brushless motor / permanent magnet synchronous motor control, and the price is still very cheap, and only 3RMB is only 3RMB about.
From this, the BOSCH GO electric screwdriver is not seen in the circuit design, and it is also very simple. The main cost and advantage is still reflected in the motor and gearbox. This is not to master the core technology. The advantage is located.
↑ The last embarrassment of dismantling is easy, and the box that is going back to the top is too difficult (uppercase !!!).
summary
First, you must admit that Bosch Bosch GO electric screws are small and strong, real materials, performance, and large torque. However, in the user experience of the product itself, there is also a space worth optimized. Bosch Go's big torque is both its characteristics, advantages, but also a defect, because the lower pressure control method determines the use of Bosch Go to make greater grip Complete, when huge torque is not completely released, the anti-rush force left to the user is not only simple in hand, it is also possible, and it is also possible to see the screws in the video actually demo this article. There is no hush force that cannot be masked when there is no release torque.
So, if you want to use Bosch Go electric screwdriver, please learn to let go!
Our other product:
