Patent Application
20070136991
Not Applicable
Not Applicable
Conventionally, a general hinge for automatically closing the door uses the spring torque of the hinge to achieve its action. However, while automatically closing the door, the door and the door socket will make a loud noise from the impact. Therefore, the buffer hinge is developed. The buffer hinge generally has three buffer methods to implement, which are:
The spring type buffer hinge not only has a return spring but also has a buffer spring. By a bounce reaction from the torque of the buffer spring, the impact during door closure can be lessened. However, since the door with an automatic return experiences fatigue phenomenon, the torque of the buffer spring is larger than the torque of the return spring thereto causes the door not to completely close.
The friction type buffer hinge uses the friction between two components to prevent a quick door return as well as achieving a buffer effect. Since damage to the door is produced from the friction, the friction surface becomes smooth and the material is changed. Therefore, the door loses the buffer effect after being in use for a period.
The oily type buffer hinge has equipment with a slow release of oil, and high density oily grease. Therefore, when the opened door is closing, the oil equipment is slowly releasing oil and prevents the density of the oil grease. More, the door can slowly be closed. However, this structure causes inefficiency from oil leakage. In other words, this equipment is not only complicated, but also has a higher cost.
According to the above descriptions, different buffer types have their advantages and disadvantages. However, they have a common problem, i.e. the buffer equipment should not have a large buffer resistance. Otherwise the door can not be closed completely. Moreover, when the angle for opening the door is smaller, the door can quickly and automatically return to be closed. It can certainly achieve a buffer effect. In other words, when the angle for opening the door is larger, the door during automatically returning to be closed causes a large inertia force. The inertia force always is largely far away from the buffer resistance. Therefore, the impact caused from the door and door socket makes the noise.
Furthermore, the above different types of the buffer equipment only can adjust at an adequate buffer force. Furthermore, the different angles for opening the door does not automatically adjust and produce an adequate buffer force.
In order to solve the above mentioned problems, the buffer as mentioned in the above cannot automatically produce an adequate buffer force by the angle for opening the door. In the present invention, the two closed hinge flaps pivoted with an axis having a torque of the return spring can make one end of the axis be affixed with a buffer component that has multiple spring convexes. More, the buffer component is positioned in the corresponding buffer container. Therefore, the buffer container can have concaves for elastically embedding with the convexes of the buffer component. More, the axis can rotate following by the hinge flaps' swinging.
Furthermore, in two neighboring sides of the two hinge flaps, the neighboring side of one hinge flap has a brake component. The brake component produces a friction on the neighboring side of the other hinge flap.
According to the equipment of the present invention, when the angle for opening the door is larger, the return torque produced from the return spring is gradually increased. The embedding number between the convexes and the concaves is increased following the change of the angle. Therefore, the buffer resistance between the two is increased. Moreover, when the door closes gradually, the angle of the opened door is gradually decreased. The return torque produced from the return spring is gradually decreased. Further, the buffer resistance is gradually decreased. The force for automatically closing the door can automatically produce an adequate buffer force by the angle of the opened door. Therefore, the door does not act fast or slow while opening and closing, and the impact between the door and the door socket will be minimized.
The brake component between the two hinge flaps can produce a friction resistance, and can sufficiently secure the stabilization and the assistant buffer effect while the door is returning.
The foregoing aspects, as well as many of the attendant advantages and features of this invention will become more apparent by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
Please refer to
Further, the upper of the tube (12) in the hinge flap (1a) has a positioning component (3). The stop portion (13) of the tube (12) is embedded into the embedded container (33) of the positioning component (3), and the positioning component (3) therefore cannot rotate. More, the hook (41) in the upper of the return spring (4) is embedded into the embedded spring container (34) of the positioning component (3). Besides, the top of the positioning component (3) has a buffer container (31). The buffer container (31) has a buffer component with multiple elastic concaves (32). More, the buffer container (31) has a buffer component (5) with multiple elastic convexes (52). Therefore, the convexes (52) can be elastically embedded into the concaves (32).
The lower of the tube (12) in the hinge flap (1a) pre-has a ring (23). Further, an adjusted component (2) is positioned into the tube (12), and the hook (41) in the lower of the return spring (4) is embedded into the embedded spring container (22) of the adjusted component (2). In the same time, the peripheral side of the adjusted component (2) has multiple hoes (21) for inserting the bump component (24).
The upper and lower of the pivoted portion (17) are positioned in the outside of the positioning component (3) and the adjusted component (2). Another axis (6) is pivoted with the two hinge flaps (1a and 1b) and the middle of the adjusted component (2) and the positioning component (3). Therefore, the fixed portion of the axis (61) in one end of the axis (6) is positioned into the fixed hole (51) of the buffer component (5) and the embedded hole (18) of the hinge flap (1b). Later, both ends of the axis (6) are embedded into the cover component of the axis end (7).
Please refer to
When releasing the door, the door is automatically closed by the return torque of the return spring (4). In the meantime, the axis (6) also can actuate the buffer component (5) to be reversed. Further, the convexes (52) of the buffer component (5) are reversed. Another concave (32) is appeared instead of the previous concave (32). Therefore, the embedding number between the convexes (52) and the concaves (32) is gradually decreased. In other words, when the angle for opening the door is lager, the embedding number between the convexes (52) and the concaves (32) is larger. More, the buffer resistance is also larger. When the angle for closing the door is smaller, the embedding number between the convexes (52) and the concaves (32) is decreased. More, the buffer resistance is also smaller.
In sum, when the angle for opening the door is larger, the return torque produced from the return spring (4) is also gradually increased. The buffer resistance is also increased. On the contrary, when the angle for closing the door is smaller, the return torque produced form the return spring (4) is gradually decreased. The buffer resistance is also smaller. Therefore, the buffer hinge can automatically produce an adequate buffer force. Furthermore, the door does not act fast or slow while opening and closing, and the impact between the door and the door socket will be minimized.
The brake component (8) between the two hinge flaps (1a and 1b) can produce a friction resistance during door closing, and can much secure the stabilization and the buffer effect while door closing for the hinge.
