Chapter 375 Why do you deserve it?

Li Weidong went to Tang Hao with a sample of the massage chair, hoping that Tang Hao could help improve it.

When he walked into the laboratory, he saw Tang Hao holding a band-aid and wrapping it around his index finger.

"Tang Gong, what's wrong with your hand?" Li Weidong asked.

"Director Li is here." Tang Hao raised his head, smiled awkwardly, and then said: "While doing experiments, one of us was accidentally scratched by the blade of the soymilk machine."

"Why are you so careless? You need to be more careful in the future. Do not touch the blade after the power is turned off." Li Weidong said.

"I only touched it after the power was turned off, but the blade was buried in the bean dregs. I couldn't see the position of the blade from the outside, so I accidentally got scratched." Tang Hao said.

"Let me see." Li Weidong said immediately.

"It's just a small wound, nothing to see." Tang Hao said.

Li Weidong smiled helplessly: "Who wants to see your wound? I want to see the soymilk machine!"

Tang Hao also knew that he would be wrong, so he took Li Weidong to see the soymilk machine with an embarrassed look on his face.

This is just a sample, it looks very crude, it doesn't even have a casing, and even the motor is exposed.

The motor is located below the soymilk machine, with a removable container above it, and the blade is installed at the bottom of the container.

"This design doesn't work!" Li Weidong said immediately.

"Director Li, is there any problem? Aren't German juicers also designed in this way?" Tang Hao asked.

"You have to change it. Don't put the motor underneath." Li Weidong said.

"You mean, put the motor on top?" Tang Hao began to frown and think.

"Yes, it uses a top-mounted motor design." Li Weidong then asked: "Give me a pen and paper, and I will draw it for you."

Tang Hao immediately handed over the pen and paper, and Li Weidong began to write and draw. Soon, Li Weidong drew the structure of the upper motor and handed it to Tang Hao.

Tang Hao looked at this picture and suddenly showed an expression of enlightenment.

"Why didn't I think of that! Director Li, your design is so wonderful!" Tang Hao couldn't help but exclaimed.

Tang Hao is not flattering Li Weidong, but the design of the top motor is indeed very clever for a soymilk machine.

The original household soymilk machine, like the juicer, had a bottom-mounted engine and the blade was at the bottom of the container.

However, if it is used in a soymilk machine, this defect will be obvious.

Early soymilk machines had insufficient wall-breaking capabilities. When making soymilk, a large amount of bean dregs would remain, and the bean dregs would be deposited at the bottom, covering the blades.

Since the position of the blade cannot be determined by sight, you must be careful when removing the blade or collecting bean dregs to avoid scratching your hands. It is also more troublesome to clean.

In order to solve the shortcomings of the bottom motor being easy to hurt the hands and difficult to clean, Joyoung took the lead in launching the design of the top motor, and with this design, it became the number one brand of soymilk machines.

Li Weidong naturally wanted to learn from this proven successful design.

As a physics engineer, Tang Hao understood the benefits of the top-mounted motor in an instant. He held the drawing in his hand and couldn't wait to try the effect of the top-mounted motor.

Li Weidong stopped Tang Hao, and he said: "Mr. Tang, please put away the soymilk machine first and help me look at something. I made a massage chair, but it always feels uncomfortable. Please help me."

Take a look!"

Only then did Tang Hao notice that there was a cushion with a backrest placed on a chair in the room. It looked very thick. It should be the massage chair Li Weidong mentioned.

"I was just dressing the wound, so I didn't notice that you brought something." Tang Hao said with an apologetic look, and then he walked up and checked the massage chair.

Soon, Tang Hao discovered the clues, and he asked: "Director Li, aren't you using rollers here?"

"It's not a roller, it's a massage head, that's it." Li Weidong said, taking out a sample of the massage head from his bag and handing it to Tang Hao.

Tang Hao took the massage head and looked at it carefully, then frowned and began to think. After a while, he asked: "Director Li, who designed this massage head?"

"I designed it! Is it inappropriate?" Li Weidong asked.

"I can probably understand your design intention. You want to create a kneading feeling through the overall rotation of the massage head, right?" Tang Hao asked again.

"As expected of Tang Gong, you can tell at a glance." Li Weidong extended his thumb.

Tang Hao then said: "Your design idea is feasible, but I have a question, why don't you use rollers? For massage, the comfort of rollers should be better, right?"

"Isn't this a size limitation? This kind of backrest massage chair is relatively small, so it's better to use a massage head." Li Weidong said.

Some 3D and 4D massage chairs in later generations use rollers, but that is a complex guide rail massage unit, which is already in the category of a small robotic arm. Li Weidong's current technology cannot do it.

The massage chair made by Li Weidong can only provide fixed-point massage. For fixed-point massage, mechanical fingers are more reliable.

Tang Hao thought for a while, and then said, "Director Li, let me help you improve the design of this massage head, and then adjust the angle of the massage head. This should increase some comfort."

Li Weidong then asked: "Tang Gong, can you add some ergonomic designs."

"Well..." Tang Hao suddenly showed a troubled expression, and then he explained: "Director Li, although I know about the subject of ergonomics, I have never studied it!"

"You haven't even learned from Tang Gong!" Li Weidong said with some disappointment.

Tang Hao continued; "Ergonomics includes a subject called biomechanics. I have only seen some knowledge introductions in this area and only have a rough understanding of it, but if asked to do it, I really can't do it."

At this moment, a voice sounded from outside the door: "What's ergonomics? Isn't it just that it makes people sit comfortably?"

Li Weidong looked back and saw that it was Tang Renjie who walked in.

"Dad, why are you here!" Tang Hao said immediately.

"I heard that Factory Director Li is here, so I came over to take a look." Tang Renjie said.

Li Weidong said with an apologetic look, "I'm sorry, Mr. Tang, I wanted to see you first, but it's not convenient for me to walk around with a massage chair on my back, so I came straight here."

"Massage chair? Let me take a look." Tang Renjie was very interested in the massage chair and even went up to try it out himself.

"Ouch, no, it hurts my flesh when you press it. This can't be used. We have to improve it." Tang Renjie stood up from the chair and continued, "Were you talking about ergonomics just now?"

"Yeah, I think there should be some ergonomics on this massage chair, but I can't find anyone who understands this." Li Weidong said, looking at Tang Renjie expectantly: "Tang Gong, you should know ergonomics, right?

?”

"I am a person who studies electronic tubes, so I don't understand that stuff!" Tang Renjie chuckled and continued, "But I know where to find someone who understands this thing."

"That's great, I have to ask Mr. Tang to recommend me." Li Weidong said immediately.

Tang Renjie went on to explain: "Actually, the person I'm talking about has never seriously studied ergonomics, but if you ask him to improve this massage chair and make it more comfortable, he can still do it.

This man’s name is Yan Junsen. He is about the same age as me and is retired. He turned out to be an engineer from Institute 175. You must have heard of Institute 175, right?”

Li Weidong shook his head and said he had never heard of it.

Tang Renjie continued: "Institute 175 is a military research institute. I don't know exactly where it is and what it studies. I just know that there is such a unit in our city of Shanghai.

Previously, our No. 5 Component Factory also undertook some scientific research and production tasks in the military industry, so I got to know Yan Junsen. His main research was on the cockpit layout of tanks and armored vehicles.

There are three or four people sitting in this tank, and they also have to carry out operations such as observation, loading, shooting and driving, so the space layout must be reasonable, and the operators must be as comfortable as possible to avoid excessive

Fatigue affects combat effectiveness.

If Yan Junsen is willing to take action to make your massage chair more comfortable, there will definitely be no problem."

"Mr. Tang, is the teacher Yan Junsen you mentioned easy to find?" Li Weidong asked.

"It's easy to find him. Anyway, Lao Yan has retired and usually has nothing to do. If you are free, we will go find him this afternoon!" Tang Renjie said.

…

That afternoon, Tang Renjie took Li Weidong to an old family home.

Knocking on the door, a bald old man wearing shorts and a vest opened the door.

"Old Yan!" Tang Renjie called him, and Li Weidong knew that this unattractive bald old man was Yan Junsen.

"Old Tang, why are you here? Is that Tang Hao behind you? He has grown into a big boy... No, your Tang Hao is much older than this young man!" Yan Junsen said.

"Lao Yan, let me introduce to you, this is Factory Director Li of Puppy Electric." Tang Renjie said.

"I think I heard about Puppy Electric in advertisements." Yan Junsen thought for a while and asked, "Is it the Puppy Electric that won awards abroad?"

"Yes, that's the puppy appliance." Tang Renjie nodded quickly.

The advertisement that Puppy Electric won the award at the Cologne Electrical Appliances Show was quite effective. Although Yan Junsen had never bought Puppy Electric’s products, he had heard of the Puppy Electric brand at that time.

Yan Junsen invited the two people into the room, and after the guests and hosts took their seats, Yan Junsen made tea for them.

After a few pleasantries, Li Weidong explained his purpose of coming:

"Teacher Yan, I recently developed a massage cushion for back massage. I want to make this cushion more comfortable to use. I heard that you are an expert in this field, so I came here to ask for your advice."

"What kind of massage cushion?" Yan Junsen asked.

"Put it in the car downstairs. Just wait a moment. I'll get it now." Li Weidong hurried downstairs and brought up the massage cushion.

Yan Junsen studied it carefully and then said, "It's not difficult to change it to make it more comfortable. If I were still in the unit, I could do it for you soon.

But now that I am retired, I need tools but not tools, and materials but not materials. How about this, I draw you a drawing, you follow the drawing, go back and try to change it yourself? "

Li Weidong could feel that there was a hint of refusal in Yan Junsen's words. But for Tang Renjie's sake, he was too embarrassed to refuse directly, so he made such an excuse, which was regarded as helping.

It is not troublesome to draw a drawing with just a pen. As for the effect of the things made according to the drawing, that is not within Yan Junsen's scope.

This is not the result Li Weidong wants. He doesn't want Yan Junsen to work hard and not contribute his best.
To be continued...