Research shows that when the sudden noise reaches 60 decibels, 70% people will wake up, which will affect sleep and cause fatigue. In the field of door locks, the noise generated by the door lock products used by most residents usually exceeds the decibel value when the door is opened and closed, thus damaging the quality of family life to some extent.
On September 20 12, Mingmen Door Lock grandly launched the series of "Mingmen Indoor Silent Door Lock", with the loudness as low as 45 dB, which is about 35% lower than that of ordinary door lock products. It is understood that this series of door locks of Mingmen have been authorized by three national utility model patents.
According to industry insiders, the introduction of silent door locks in famous rooms has effectively reduced the noise problems caused by door locks in daily life, especially for bedrooms, libraries, hospitals, schools and other places that need to be quiet, as well as families with elderly people, children, pregnant women or patients.
In view of the noise of traditional door lock products, the following technical research and development have been mainly done for Mingmen Silent Door Lock:
The oblique tongue adopts spherical design and is embedded with high-strength nylon silent rubber ring, which greatly reduces the collision surface with the pinch plate metal. The high-strength silent inclined tongue guide sleeve effectively reduces the noise caused by the telescopic movement of the locking tongue.
The original patented spring leaf design greatly buffers the closing force of the inclined tongue, and the inner wall of the buckle box is made of high-strength silencing plastic to avoid the collision between the side of the inclined tongue and the metal of the buckle plate and reduce the noise of the switch door in a large range.
The inside of the lock body is subjected to five-fold silencing treatment, which effectively reduces the noise generated by the movement of parts.
The unique buffer spring and rubber pad design of the slider effectively buffer the collision between the slider and the inner wall of the lock body.
The rubber pad of the slider and the guide sleeve of the inclined tongue form a plastic slide rail to prevent the inclined tongue and the slider from directly colliding with the metal on the inner wall of the lock body.
The special rubber pad cushions the restoring force of peach picking, which helps to mute the door lock.
The lock tongue and the slider are connected in a fixed way, which will not be loose relatively, thus avoiding the noise caused by moving collision.
The oblique tongue rod is sheathed with an O-shaped sound insulation rubber ring, which can effectively slow down the collision between the oblique tongue and the slider and reduce the noise.
Using ngme core lock, this famous indoor silent door lock has been tested for 200,000 times, with long service life and 10 year quality guarantee.
Sound decibel reference value
0-20 decibels: like leaves falling, it is so quiet that people can hardly notice it;
20-40 decibels: quiet, like dripping sound;
40-60 decibels: like libraries, bedrooms, etc. Speak softly;
60-80 decibels: noisy, just like in busy traffic in downtown;
80- 100 dB: it's noisy and nerve cells are destroyed;
/kloc-above 0/00 decibel: unbearable, temporarily deaf after staying for one minute.