Gated Sky Spring

Abstract

The invention relates to the technical field of door-controlled springs, and discloses a door-controlled sky spring, which includes a casing, the surface of the casing is movably connected with a connector, the inside of the casing is fixedly connected with a tooth plate, and the surface of the tooth plate is movably connected with a The expansion-contraction wheel, the side of the expansion-contraction wheel away from the tooth plate is movably connected with an extrusion plate, the side of the extrusion plate away from the expansion-contraction wheel is movably connected with a compression spring, and the inside of the expansion-contraction wheel is movably connected with a spring rod. When the three are not in contact, the spring rod loses its limiting force and stretches, and at this time the friction between the teeth, the tooth plate and the extrusion plate is relatively large, and the closing speed of the door tends to be stable; and the elastic force of the compression spring is greater than The elastic force of the spring rod, and the friction between the teeth and the tooth plate and the extrusion plate gradually decrease during the contraction process of the expansion and contraction wheel, and the opening of the door body is more labor-saving, thereby achieving the effect of light opening force and more stable closing speed.

Description

technical field [0001] The invention relates to the technical field of door control springs, in particular to door control sky springs. Background technique [0002] The door control spring is often used to control the opening and closing of the door body. With the continuous development of technology, in order to make the door body more anti-theft, the door body is made more and more heavy, and the door control spring is also developed. [0003] Although the traditional door control spring can play the role of supporting the door body, it can not play a role in assisting some heavier doors, making it more difficult for people to open it. It can be imagined that the heavier door body When closing, the traditional door control spring only plays a role of relief, and the door body has a large inertia when closing, resulting in an unstable closing speed; in addition, the existing door control spring needs to be lubricated inside after a period of use. However, oiling needs to ...

AI Technical Summary

Problems solved by technology

[0003] Although the traditional door control spring can play the role of supporting the door body, it can not play a role in assisting some heavier doors, making it more difficult for people to open it. It can be imagined that the heavier door body When closing, the traditional door control spring only plays a role of relief, and the door body has a large inertia when closing, resulting in an unstable closing speed; in addition, the existing door control spring needs to be lubricated inside after a period of use. However, oiling needs to be operated regularly by humans. If people forget, it will reduce the service life of the door control spring. Therefore, the door control sky spring with lighter door opening force and more stable door closing speed came into being.

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