DOOR CLOSER
First Claim
1. A door closer, arranged inside a single case, comprising:
- a closer, which moves a door in a closing direction and provides force that is used to close the door, and an opening-assistance device, which stores a door-opening force when the door is opened and provides a door-opening force that can be used to counter the door closer'"'"'s door-closing force, so that the functioning of the closer and the opening-assistance device interlink with each other when the door is opened.
1 Assignment
0 Petitions
Accused Products
Abstract
A door closer that integrally incorporates a door-opening-assistance device, and that therefore eliminates the need for unnecessary troublesome adjustment between parts, and whose number of parts is reduced, making said door closer compact. The door closer 1 includes a closer 1a that includes a pinion 5 that rotates in the forward and reverse directions when the door is opened or closed, respectively. A cylinder 9 is meshed with the pinion 5 and moves forward and backward. A closing spring 14 energizes the door in the closing direction via the cylinder 9and the pinion 5. A opening-assistance device 1b that includes an opening spring 22 that stores an opening force in the door-opening direction due to the movement of the cylinder 9 when the door is opened. Locking mechanisms 27, 28, and 29, that—when the door is opened—lock the opening spring 22 under an opening-force-storing condition. An unlocking mechanisms 23 and 24 that—when the door is closed—unlock the locking mechanisms. The closer 11a and the door-opening-assistance device 1b are inside the same case 6 and interlinked by the opening of the door.
21 Citations
20 Claims
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1. A door closer, arranged inside a single case, comprising:
a closer, which moves a door in a closing direction and provides force that is used to close the door, and an opening-assistance device, which stores a door-opening force when the door is opened and provides a door-opening force that can be used to counter the door closer'"'"'s door-closing force, so that the functioning of the closer and the opening-assistance device interlink with each other when the door is opened.
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2. The door closer, comprising:
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a closer that includes a pinion that rotates in the forward and reverse directions together due to the opening and closing, respectively, of a door, a cylinder that is meshed with the pinion and moves forward and backward, and a closing spring that, via the cylinder and the pinion, provides force that is used to close the door, and an opening-assistance device that includes an opening spring that stores a door-opening force due to the rotation of said pinion when the door is opened, a locking mechanism that locks the opening spring in the opening-force-storing condition when the door is opened, and an unlocking mechanism that unlocks the locking mechanism when the door is closed, and wherein said closer and said opening-assistance device are inside the same device so that the functioning of said closer and that of said opening-assistance device are interlinked when the door is opened. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification