a lock knob

Abstract

The invention discloses a rotary knob for a lock. The rotary knob comprises a rotary knob main body and a shell. Cushion layers are fixed to the surfaces of the upper side and the lower side of the rotary knob main body. A plug pin is arranged on the left side wall of the rotary knob main body, a clamping spring is installed on the outer side of the plug pin, a torsion spring is arranged on the left side of the plug pin, a fixed base is installed on the outer side of the torsion spring, a protection ring is arranged on the end face of the right side of the shell, the shell is located on the outer side of the fixed base, illuminating lamp beads are fixedly installed on the periphery of the surface of the protection ring, a rear base plate is arranged on the left side of the shell, and an elastic shrinkage ring is installed between the rear base plate and the shell. According to the rotary knob for the lock, the contour and internal structure of the rotary knob for the lock are formed ata time through injection molding, secondary machining is not needed, the rotary knob can be directly used after electroplating, plastic is used for replacing zinc alloy for die casting of a handle outer disc, the defects produced by zinc alloy die casting are avoided, the advantages of plastic are brought into full play, firmness, corrosion resistance and water prevention are achieved, and machining is easy.

Description

technical field [0001] The invention relates to the technical field of lock knobs, in particular to a lock knob. Background technique [0002] In modern times, there are many types of door locks, which makes people have higher and higher requirements for door locks. The safety and reliability of door locks are the most important. Of course, aesthetics is also indispensable. Mechanical locks can be said to be the most The evergreen among the locks is not only easy to operate, but also practical. The knob device is a relatively affordable mechanical lock, and the knob is an important component of the knob device, which affects the sensitivity, accuracy and aesthetics of the knob device. [0003] The conventional knob is formed by zinc die-casting. There will be die-casting marks on the surface of the casting, cracks or local deformation, pores and shrinkage cavities. The casting structure will be short of material, the fillet is unknown, and it is not stable enough. After mac...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of lock knob, to solve the problem that the conventional knob proposed in the above-mentioned background technology is formed by zinc die-casting, the casting surface will have die-casting marks, cracks or local deformation, air holes, shrinkage cavities, casting structure There will be material shortage, unknown rounded corners, and insufficient stability. After the knob blank is formed, it needs to be machined and polished, which will greatly increase the cost and manufacturing cycle. These problems will eventually affect the sensitivity, accuracy and aesthetics of the knob device. The problem

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