How to install the automatic door closer?
I. Externally mounted door top closers
The external door closer is equipped with hydraulic buffer oil pump device, which can automatically close the door after opening the door. Its main feature is that the door closes slowly and there is no collision sound after closing. It can be used in schools, hospitals, office buildings and hotels.
(1) installation steps
Step 1: Install the machine body.
The door closer can only be installed on the upper part of the door leaf near the hinge, and one end of the machine body without speed regulating screw faces the hinge, otherwise the door cannot be opened. If forced to open, it will damage the door closer, door leaf and upper door frame, that is, the slot. Fix the machine body on the door leaf with four screws, then put the lever into the upper end of the gear shaft, cover the other end, and tighten the fastening screws.
Step 2: Install the connecting rod.
Fix the connecting rod on the door frame with two screws. The hand-held connecting rod is at right angles to the upper door frame. Loosen the lock nut, adjust the connecting rod to an appropriate length, gently move the lever so that the lever pin is just inserted into the hole at the end of the connecting rod, and check whether the connecting rod is at right angles to the upper door frame. Install the washer and tighten it with a semi-circular head screw. Lock nut, installation is complete.
Step 3: Adjust the closing speed.
The closing speed has been adjusted. If it is necessary to change the speed, turn the speed adjusting screw as shown in the figure.
(2) Precautions
External door top closers are not suitable for two-way door opening.
The speed adjusting screw controls the opening and closing speed of the door. Clockwise rotation is slow and counterclockwise rotation is fast.
C after the door closer is used 1 year, antifreeze oil should be added. When refueling, unscrew the oil outlet screw to refuel, and then tighten the screw when the oil is full.
D screws and seals in other places should not be twisted at will to prevent oil leakage.
Second, the embedded door top door closer
(1) structure
The embedded door top spring consists of a hydraulic buffer spring installed on the door leaf, a slideway installed on the door frame, a slider and a connecting rod. Because the embedded door top closer is installed in the slot of the door leaf and the door frame, the appearance of the door will not be affected when closing the door. Suitable for doors of high-end hotel rooms.
(2) principle
The hydraulic buffer spring gives the connecting rod a return torque, which makes the connecting rod rotate away from the hinge, thus driving the slider to move away from the hinge in the slideway at the same time, thus achieving the purpose of closing the door.
There is a temporary locking clip at the front end of the slideway. When the door leaf is opened to the right angle position, the slider moves to the side close to the hinge, and the locking clip is clamped into the tongue groove at the front end of the slider, so that the door is temporarily locked in this position.
(3) Installation points
1, before the door frame and fan are in place, the top of the door leaf and the bottom of the window sill on the door frame should be slotted by elastic lines.
2. Then before installing the doors and windows, bury the hydraulic buffer spring in the groove, and screw the slideway into the groove of the door frame with screws.
3. After the door frame and the fan are installed and fixed, fix the connecting rod on the spring shaft with nuts.
What does the automatic door closer do?
1, shock absorption and buffering function-shock absorption and buffering can be generated after the door is quickly opened to a certain position, and the strength and scope of shock absorption and buffering can be adjusted according to the use requirements; This function is used to prevent the door or lock from colliding with the wall when opening the door quickly, or to prevent people from leaning forward and falling to the ground when opening the door quickly due to weightlessness during emergency escape.
2. Slow door closing with delay-the door closes slowly at a constant speed from the maximum position of opening the door, which can be adjusted infinitely according to requirements. Suitable for places with frequent and crowded people, especially hospitals, with special doors and passages for the elderly, children and the disabled.
3. The closing force can be adjusted-it can be installed on different doors with various door weights and widths, and it can also be installed in places with high closing resistance due to environmental reasons. Arbitrary stepless adjustment can obtain satisfactory door closing force, especially in coastal cities, cars and boats and other places where door closing resistance (door closing force) often changes due to wind.
4. Temporary closing performance of damping reset function (vertical door closer)-When opening at any angle, closing the speed regulating valve should temporarily suspend the damping reset function.
5. Safe, fast and super-damping closing performance (vertical door closer)-When an external force is suddenly applied in the process of closing any angle, it should be able to close safely and quickly.