Delay unit for door with a door closer, door closer with a delay unit, and door with a door closer having a delay unit

• US 7,859,203 B2
• Filed: 03/02/2007
• Issued: 12/28/2010
• Est. Priority Date: 03/13/2006
• Status: Expired due to Fees

• Current Assignee: DT Engineering Co., Ltd.
• Original Assignee: DT Engineering Co., Ltd.
• Inventors: Miyashita, Sugaya
• Primary Examiner(s): IP, SHIK LUEN PAUL
• Application Number:
  US11/713,083
• Publication Number:
  US 20070214725A1
• Time in Patent Office: 1,397 Days
• Field of Search: 318/262, 318/266, 318/282, 318/286, 318/443, 318/468, 318/447, 493/24, 493/40, 493/49, 493/60
• US Class Current: 318/266
• CPC Class Codes: E05F 15/00 Power-operated mechanisms for wings motor-operated accessories in locks for completing closing or initiating opening of a wing E05B17/00
• CPC Class Codes: E05F 15/60 using electrical actuators
• CPC Class Codes: E05F 15/73 responsive to movement or presence of persons or objects
• CPC Class Codes: E05F 15/79 using time control
• CPC Class Codes: E05Y 2400/50 Fault detection
• CPC Class Codes: E05Y 2400/508 of detection
• CPC Class Codes: E05Y 2400/816 Voice
• CPC Class Codes: E05Y 2900/132 Doors

Abstract

The Objective of the present invention is to provide a delay unit for door with a door closer, which is capable of automatically closing the door after the elapse of a certain time since the door was opened and can be installed in case that the door closer is embedded inside the building and thereby being not exposed.

The objective is solved by providing a delay unit 5 for door with a door closer comprising: a first sensor for detecting the door 2 opened to the first angle A, a lock unit 7 for electrically lock/unlock of the rotation of the rotation axis 3 of the door 2, a timer, a first sensor, and a control means, with which the first sensor, lock unit 7, and timer is connected, for controlling the lock unit 7 based on the signals from the first sensor and timer.

Claims

1. A delay unit for door with a door closer comprising:

a first sensor for detecting that the door with a door closer has been opened to the first certain angle;

an electrical lock/unlock means for electrically locking/unlocking the rotation of the rotation axis of the door;

a timer;

a control means which is connected with the first sensor, electric electrical lock/unlock means, and timer and controls the electrical lock/unlock means on the basis of the signals from the first sensor and timer;

wherein when the door has been opened to the first certain angle, the electrical lock/unlock means locks the rotation of the rotation axis of the door, and the control means controls the timer to start based on the detection signal from the first sensor;

after the elapse of the first certain time, on the basis of the signal from the timer, the control means sends a control signal to the electrical lock/unlock means, thereby releasing the rotation lock of the rotation axis of the door by means of the electrical lock/unlock means.

2. A delay unit for door with a door closer according to claim 1, comprising a second sensor for detecting the door opened to the second certain angle, wherein the second sensor is connected with the control means;

when the door has opened to the second certain angle, the electric lock/unlock means locks the rotation of the rotation axis of the door; and

on the basis of the detection signal of the second sensor, the control means controls the timer to work.

3. A delay unit for door with a door closer according to claim 1, comprising a rotation angle sensor for continuously detecting the rotation angle of the door, and an arithmetic means provided with the control means, wherein when the rotation angle sensor has detected the door stopped open at an angle beyond the first certain angle less than the second certain angle, the control means controls the timer to be reset and start the measurement of the time;

when the timer has finished the measurement of a total delay time defined as the excess delay time added by a delay time, the first certain time, the control means sends a control signal to the electric lock/unlock means, thereby releasing the rotation lock of the rotation axis of the door by means of the electrical lock/unlock means.

4. A delay unit for door with a door closer according to claim 3, wherein the control means, when the rotation angle sensor has detected the door stopped open at an angle beyond the first certain angle less than the second certain angle, controls, during the door is stopped, the alarm/notification means to work at a certain time interval or notify the time at a certain time interval by means of voice.

5. A delay unit for door with a door closer according to claim 1, wherein the electric lock/unlock means is tightly fixed to the rotation axis of the door, and includes a ball capable of freely engaging in a concave portion formed on the lower surface of the lock plate, a spring for pressing the ball, a lock pin capable of freely pressing the spring, and a solenoid for moving the lock pin in and out;

wherein, by means of pressing the spring and the lock pin, the rotation of the lock plate is locked by pressing the ball to contact with the concave portion;

by means of the energizing the solenoid, the force pressing the lock pin is released or reduced, thereby releasing the lock of the rotation of the lock plate.

6. A delay unit for door with a door closer according to claim 1, wherein the electric lock/releasing means is tightly fixed to the rotation axis of the door, and includes a lock plate for locking the rotation of the rotation axis, a lock member laid in the housing and capable of freely engaging in the concave formed on the lower surface of the lock plate, a front spring for pressing the lock member, a lock piston capable of freely sliding inside the housing and freely pressing the front spring, a rear spring for pressing the lock piston, a movable pin for locking the slide of the lock piston by means of moving in and out inside the housing, and a solenoid for moving the movable pin in and out;

wherein when the movable pin has stuck out into the housing by means of the solenoid, the sliding movement of the lock piston is locked; and

when the movable pin doesn'"'"'t stick out into the housing by means of the solenoid, the lock of the sliding movement of the lock piston is released.

7. A delay unit for door with a door closer according to claim 1, comprising an alarm/notification means connected with the control means, and a third sensor for detecting the closure of the door;

wherein the control means controls the alarm/notification means to work on the basis of at least one signal from among signals form the first sensor, second sensor, third sensor, and timer.

8. A delay unit for door with a door closer according to claim 7, wherein the control means, in order to distinguish at least one received signal among form the received signals from the first sensor, second sensor, third sensor, and time from the other, controls the alarm/notification means to generate a different sound(s) from the other.

9. A delay unit for door with a door closer according to claim 7, wherein the timer, when the control means has not received a signal from the first sensor or second sensor, starts the measurement of the time under the control of the control means;

the control means, when having not received a signal from the third sensor until the finish of the measurement of the second certain time, controls the alarm/notification means to generate an alarm(s).

10. A door with a door closer comprising:

the delay unit for door with a door closer defined in claim 1, connected with the rotation axis of the door, or the door closer with a delay unit including an oil cylinder and piston, the door closer comprising;

a mesh portion with a plurality of teeth continuously formed on the face of the piston;

a lock pin having a meshing stick portion, which is formed on the tip end and capable of freely meshing with the mesh portion and the meshing stick portion is capable of freely moving in out of inside the oil cylinder;

a rod for moving the lock pin in and out of the oil cylinder;

a main solenoid capable of freely pressing the rod;

a sub-solenoid unit capable of holding the pressed rod at the position assumed by the press;

a rotation detection sensor for continuously detecting the rotation angle of the door;

a timer for measuring the time;

a control means, with which the main solenoid unit, sub-solenoid unit, rotation angle detector, and timer are connected, controls the main solenoid unit, sub-solenoid unit, rotation angle detector, and timer;

wherein when the rotation angle sensor has detected the door stopped its rotation at an arbitrary open angle, the control means controls the timer to start the measurement;

when the door starts closing at the measured time of the rest time longer than or equal to the fifth certain time less than sixth time, the main solenoid is controlled to work, thereby the main solenoid presses the rod to mesh the meshing stick portion of the lock pin with the mesh portion of the piston;

in the mean while, when the rod has pressed, the sub-solenoid unit holds the rod at the position assumed by the press and maintains the piston and door in a rotation stop state;

on the other hand, the control means, when having controlled the main solenoid to work, controls the timer to be reset and start the measurement of the time;

when the timer has finished the measurement of the delay time, a seventh certain time, the control means controls to press to release the holding of the rod, thereby releasing the stop state of the piston and the door.

11. A delay unit for door with a door closer comprising:

a main gear being tightly fixed to the rotation axis of the door with a door closer, a outer case, to which a sub-gear meshing with the main gear is tightly fixed, a lock pin pressed, an inner case built-in inside the outer case and capable of freely rotating and tightly fixed to the building via a bracket, a lock plate provided with the inner case, a clutch laid inside the inner case, a planetary gear unit for changing the number of rotation, a spiral spring wound up by the rotation of the planetary gear unit, and a timer plate for rotating by means of the rewind of the spiral spring and releasing the lock of the lock pin after the elapse of the third certain time;

wherein when the door has opened, the rotation of the rotation axis of the door is locked for a certain time, thereby delaying the start of the closing motion of the door for a certain time.

12. A delay unit for door with a door closer according to claim 11, wherein a lock hole and convex are formed on the lock plate and on the upper surface of the timer plate, respectively, so as that, when the door is opened to the first certain angle, the lower edge of the lock pin and the convex are capable of freely engaging into the lock hole;

and when the lock pin has engaged into the lock hole, the convex portion of the timer plate engages into the lock hole since the elapse of the third certain time by means of the rotation of the timer plate, and then the lock pin is pressed up, thereby releasing the lock of the door.

13. A delay unit for door with a door closer according to claim 11, wherein a lock concave portion, to which a second lock pin engages in when the door has opened to the second certain angle, is formed on the upper surface of the lock plate.

14. A delay unit for door with a door closer according to claim 11, comprising a first sensor for detecting the door opened to the first certain angle, a third sensor for detecting the door closed, a timer, an alarm/notification means, and a control means, with which the first sensor, third sensor, timer, and alarm/notification means are connected.

15. A delay unit for door with a door closer according to claim 14, comprising a second sensor for detecting the door opened to the second certain angle, wherein the second sensor is connected with the control means;

and the control means, when having not received a signal from the third sensor within the forth certain time measured by the timer since having had received the second sensor, controls the alarm/notification means to work.

16. A door closer with a delay unit including an oil cylinder and piston, the door closer comprising:

a mesh portion with a plurality of teeth continuously formed on the face of the piston;

a lock pin having a meshing stick portion, which is formed on the tip end and capable of freely meshing with the mesh portion and the meshing stick portion is capable of freely moving in out of inside the oil cylinder;

a rod for moving the lock pin in and out of the oil cylinder;

a main solenoid capable of freely pressing the rod;

a sub-solenoid unit capable of holding the pressed rod at the position assumed by the press;

a rotation detection sensor for continuously detecting the rotation angle of the door;

a timer for measuring the time;

a control means, with which the main solenoid unit, sub-solenoid unit, rotation angle detector, and timer are connected, controls the main solenoid unit, sub-solenoid unit, rotation angle detector, and timer;

wherein when the rotation angle sensor has detected the door stopped its rotation at an arbitrary open angle, the control means controls the timer to start the measurement;

when the door starts closing at the measured time of the rest time longer than or equal to the fifth certain time less than sixth time, the main solenoid is controlled to work, thereby the main solenoid presses the rod to mesh the meshing stick portion of the lock pin with the mesh portion of the piston;

in the mean while, when the rod has pressed, the sub-solenoid unit holds the rod at the position assumed by the press and maintains the piston and door in a rotation stop state;

on the other hand, the control means, when having controlled the main solenoid to work, controls the timer to be reset and start the measurement of the time;

when the timer has finished the measurement of the delay time, a seventh certain time, the control means controls to press to release the holding of the rod, thereby releasing the stop state of the piston and the door.

17. A door closer with a delay unit according to claim 16, wherein the control means includes an arithmetic means;

when the rotation angle sensor has detected the door opened at an arbitrary open angle, the control means controls the timer to start the measurement of the time;

when the time taken for starting the closure of the door measured by the timer is longer than the sixth certain time, the arithmetic means is controlled to calculate the excess delay time defined as the excess time beyond the sixth certain time multiplied by a certain coefficient;

in the mean while, the control means, when the door has started closing, controls the main solenoid unit to work and the timer to be reset and start the measurement of the time; and

when the timer has finished the measurement of the total delay time defined as a delay time, the seventh certain time, added to the excess delay time, the control means controls the sub-solenoid unit to be energized.

18. A door closer with a delay unit according to claim 16, comprising a human sensor connected with the control means;

in case that the human sensor has detected a man during the measurement of a delay time, that is, the seventh certain time, or the total delay time, the control means compares the delay time, that is, the seventh certain time, or the total delay time with a human delay time, that is, a predetermined eight certain time, and then controls the timer to measure the resulting longer time as a remaining delay time;

when the timer has finished the remaining delay time, the sub-solenoid is controlled to be energized;

in case that the human sensor has detected a man during the closing rotation of the door, the control means controls the main solenoid unit to be energized to immediately stop the rotation of the door and the timer to start the measurement of the human delay time, that is, the eight certain time; and

when the timer has finished the measurement of the eight certain time, the sub-solenoid is controlled to be energized.