CN113513229A - Automatic door closing system and method for automatically closing door body - Google Patents
Automatic door closing system and method for automatically closing door body Download PDFInfo
- Publication number
- CN113513229A CN113513229A CN202110902394.XA CN202110902394A CN113513229A CN 113513229 A CN113513229 A CN 113513229A CN 202110902394 A CN202110902394 A CN 202110902394A CN 113513229 A CN113513229 A CN 113513229A
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- Prior art keywords
- door
- door body
- closing
- magnet
- automatic
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
- E05F5/027—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops with closing action
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/502—Application of doors, windows, wings or fittings thereof for vehicles for aircraft
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
- E05Y2900/531—Doors
Abstract
The invention relates to an automatic door closing system, comprising: a door body; a door frame; a pivoting mechanism; the electromagnetic door stopper mechanism comprises a magnet and an electromagnetic coil, wherein one of the magnet and the electromagnetic coil is arranged on the door body, and the other one of the magnet and the electromagnetic coil is arranged on the door frame; an automatic door-closing control unit, comprising: the door position acquisition module is used for acquiring a position signal of a door body; the calculating module is configured to calculate the current angular speed of the door body based on the position signal; and a door-attraction solenoid control unit configured to control actuation of the solenoid based on the current angular velocity to generate attraction or repulsion to the magnet, thereby controlling automatic closing of the door body. With the help of the automatic door closing system, the problem that the cockpit door cannot be automatically locked can be avoided by controlling the attraction of the electromagnetic coil to the magnet, and the door body can be prevented from being closed too fast, having loud impact sound or injuring the limbs of an operator by controlling the repulsion of the electromagnetic coil to the magnet.
Description
Technical Field
The invention relates to the field of automatic door closing, in particular to an automatic closing technology for a cockpit door of an airplane. In addition, the invention also relates to a method for automatically closing the door body, in particular to a control method for controlling the automatic closing of the door body.
Background
Cockpit doors (e.g., doors to the cockpit) of domestic aircraft often need to be opened and closed. The existing automatic door closing mechanism can realize automatic door closing by a spring hinge, for example. However, it has been found that the use of spring hinges alone as an automatic closure mechanism for cockpit doors presents a number of problems during use of aircraft airlines.
On one hand, when the door body is closed to the position to be locked, the spring force is lower, and meanwhile, due to the combined working conditions of various postures, vibration and the like in flight, the situation that the door is not closed to the position to be locked sometimes exists. In this case, the possibility of intrusion into the cab by a lawbreaker may be increased, which is extremely disadvantageous in terms of flight safety.
On the other hand, if the door closing force of the crew member is large, the door will close at a large angular velocity, which may damage the limbs of the crew member or other persons closing the door, and affect the experience of passengers on the airplane due to the loud closing sound. In order to reduce the impact caused by rapid door closing, a layer of soft buffer sealing gasket is usually laid on the door frame at present to reduce the impact of the door, but the effect is limited and the appearance is influenced.
Patent document CN109267859A is known to disclose an anti-misclamping safety lock device for automobile doors. When the anti-mistaken-clamping automobile door safety lock device is used, a passenger manually closes an automobile door, and after the automobile door is closed to a certain degree, the rotating motor is started to drive the rotating shaft to rotate, so that the traction rope is wound to drive the automobile door to be closed; if the children's hand did not in time withdraw from car crack this moment, the car door receives the hindrance at the closing in-process, and the tensile extension of flexible section on the haulage rope for clamp force when the car door is closed is less, consequently can not cause the clamp injury to children's hand.
Patent document CN109386205A is also known to describe a driving device of an electric suction door, which mainly realizes the driving of the door through a motor and a gear mechanism. In the door closing process, if sundries or hands of people in the vehicle exist in the door gap, the damage to the people caused by automatic door closing is avoided by controlling the torque of the driving motor or the detection of the control circuit.
Patent document CN 111706191a also discloses an electric suction door. When the electric suction assembly of the electric suction actuator breaks down to cause the electric suction door lock to be locked and cannot be opened, the unlocking device is used for unlocking the gear ring of the electric suction assembly, the electric suction pull rope can be released, so that the electric suction door lock and the electric suction door can be opened, the unlocking device can be unlocked in an electric mode or a manual mode, the flexibility is high, and the safety is guaranteed.
However, some of the above prior arts do not relate to a door closing apparatus mainly using a spring hinge, or the following problems still exist in the automatic door closing even if the spring hinge is used:
under the working condition of high-speed door closing, when the door body impacts the opening edge upright post of the door at a high speed, the door body is possibly popped out of a closing position, so that the electronic door lock fails to be locked;
the spring hinge inevitably has the problem of elastic attenuation, so that the door body cannot be automatically closed in place by the spring hinge in a small-angle opening state after being used for a long time;
during the final phase of closing, the door does not have an efficient deceleration buffer, whereby it is possible to injure the operator's limbs in the event of a high-speed closing event;
the cockpit door is not closed for a long time without any corresponding warning.
Therefore, in the field of automatic door closing systems, in particular for aircraft doors, there is always a need to prevent excessive door closing speed, excessive impact sound, limb pinching, improve door closing in place, and ensure successful drop-lock.
Disclosure of Invention
The invention provides an automatic door closing system, which comprises: a door body; a door frame; a pivoting mechanism for connecting the door body with the door frame and configured to enable the door body to pivot between a closed position and an open position; the electromagnetic door stopper mechanism comprises a magnet and an electromagnetic coil, wherein one of the magnet and the electromagnetic coil is arranged on the door body, and the other one of the magnet and the electromagnetic coil is arranged on the door frame; automatic door closing control unit, automatic door closing control unit includes: the door position acquisition module is used for acquiring a position signal of a door body; the calculation module is configured to calculate the current angular speed of the door body based on the position signal; and the door-attraction electromagnetic coil control unit is configured to control the actuation of the electromagnetic coil based on the current angular velocity so as to generate attraction or repulsion on the magnet, thereby controlling the automatic closing of the door body.
By means of the automatic door closing system, the problem that the cockpit door cannot be automatically locked can be avoided by controlling the attraction of the electromagnetic coil to the magnet. Meanwhile, the repulsion force of the electromagnetic coil to the magnet can be controlled, so that the door body is prevented from being closed too fast, and the impact sound is prevented from being too loud or the limbs of the operator are prevented from being injured by clamping.
Preferably, the door frame may include: the edge opening upright post can be close to the first vertical edge when the door body is closed; the pivoting edge upright post is close to the second vertical edge when the door body is closed; wherein the pivot mechanism may be adapted to connect the door body to the pivot jamb, and the other of the magnet and the electromagnetic coil may be mounted on the jamb.
Thus, the electromagnetic coil can generate attraction or repulsion to the magnet by the movement of the door body relative to the opening side column with a simple structure.
Alternatively, the calculation module may be configured to calculate the current angular velocity when the door body is less than or equal to a threshold pivot angle from the closed position (i.e., enters the velocity monitoring zone/monitoring range) during the door closing process.
In this way, unnecessary computing power of the computing module can be saved considerably, and the solenoid coil is actuated only in a phase close to the closed position.
In particular, the door-attraction solenoid control unit may be configured to control the solenoid to provide a repulsive force to the magnet when the current angular velocity is greater than the threshold angular velocity, and to otherwise provide an attractive force thereto.
Therefore, the auxiliary suction force can be adjusted when the suction force of the door body needs to be increased, and the repulsive force can be prevented from being provided when the door body is prevented from being closed too fast.
For example, the pivoting mechanism may include a spring hinge configured to generate a centering force on the door body when the door body is opened.
The spring hinge is used for generating main centering force, so that the effect of optimal efficiency can be achieved, and meanwhile, the electromagnetic actuating force is saved.
In some embodiments, the door position acquisition module may include an angle decoder and an angle scale, the angle scale may be fixed on top of the door body to encode a pivot angle of the door body, and the angle decoder may be installed in a door header assembly of the door frame and may be capable of reading an angle code on the angle scale. The instant acquisition of the pivoting angle of the door body can be realized by means of a simple angle decoder and an angle scale.
In addition, the automatic door-closing system may further include a drop lock control unit, which may be configured to automatically drop lock the door body when the door body is in the closed position.
The falling lock control unit can ensure that the falling lock is provided only when the door body is in the closing position, so that the safety and the efficiency are improved.
Preferably, the drop lock control unit may further comprise an alarm device, wherein the alarm device is capable of giving an alarm when the door body is not in the closed position after the electromagnetic coil provides the attraction force to the magnet for a threshold time.
By means of the alarm device, the condition that the foreign matters clamp the door can be informed to the crew member in time, and danger is avoided.
In addition, the invention also provides a method for automatically closing the door body, the door body can be pivoted between a closing position and an opening position by a pivoting mechanism, wherein one of the magnet and the electromagnetic coil can be arranged on the door body, and the other one can be arranged on a door frame associated with the door body; the method may include the steps of; acquiring a position signal of a door body; calculating the current angular velocity of the door body based on the position signal; and controlling the actuation of the electromagnetic coil based on the current angular velocity to generate attraction force or repulsion force on the magnet so as to control the automatic closing of the door body.
By means of the method for automatically closing the door body, the problem that the cockpit door cannot be automatically locked can be avoided by controlling the attraction of the electromagnetic coil to the magnet. Meanwhile, the repulsion force of the electromagnetic coil to the magnet can be controlled, so that the door body is prevented from being closed too fast, and the impact sound is prevented from being too loud or the limbs of the operator are prevented from being injured.
Preferably, during the door closing process, the current angular velocity is calculated when the distance between the door body and the closing position is less than or equal to a threshold pivoting angle. This makes it possible to save considerably on unnecessary computation effort of the computation module and to actuate the solenoid only in the phase close to the closed position
More preferably, the electromagnetic coil is controlled to provide a repulsive force to the magnet when the current angular velocity is greater than the threshold angular velocity, and the electromagnetic coil is controlled to provide an attractive force to the magnet when the current angular velocity is equal to or less than the threshold angular velocity. Therefore, the auxiliary suction force can be adjusted when the suction force of the door body needs to be increased, and the repulsive force can be prevented from being provided when the door body is prevented from being closed too fast.
Drawings
Other features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which:
fig. 1 schematically shows a perspective view of an automatic door-closing system according to an embodiment of the invention;
FIG. 2A schematically illustrates an arrangement of an electromagnetic door-stop mechanism according to an embodiment of the present invention;
FIG. 2B schematically illustrates a detail view according to the direction A circled in FIG. 2A, wherein the view shows the arrangement of the door position acquisition module;
FIG. 3 schematically illustrates a perspective view of an angle decoder and an angle scale of the door position acquisition module according to FIG. 2B;
fig. 4 schematically illustrates a block diagram of an automatic door-closing control unit of the automatic door-closing system according to an embodiment of the present invention;
FIG. 5 schematically illustrates a door body pivot angle of an automatic door closing system according to one embodiment of the present invention; and
fig. 6 schematically illustrates a control logic flow diagram of an automatic door-closing system according to an embodiment of the present invention.
List of reference numerals:
100 an automatic door closing system;
a 110 door body;
120 door frames;
122, opening an edge upright post;
124 pivoting the edge posts;
126 a door header assembly;
130 spring hinges;
132 a pivot axis;
140 a password keyboard;
150 a door lock mechanism;
160 automatic door closing control unit;
162a door position acquisition module;
162a angle decoder;
162b angular scale;
164a calculation module;
164a door position calculation module;
164b door angular velocity calculation module;
166 door-inhale solenoid control unit;
170 electromagnetic door-inhale mechanism;
172 magnets;
174 an electromagnetic coil;
176 solenoid control switches;
180 door drop lock control units;
182 an alarm device.
Detailed Description
The present invention will be further described with reference to the following specific examples and drawings, but the scope of the present invention should not be limited thereto.
The present invention relates to the field of the design of automatic door closing systems, mainly for automatic closing of aircraft doors. Although in the present invention the system for automatic door closing by means of a spring hinge as pivoting mechanism is used, it will be understood by those skilled in the art that the automatic door closing system of the present invention is equally applicable to automatic door closing systems comprising other pivoting mechanisms, such as automatic door closing mechanisms in the form of gear ropes, gear levers, etc.
In the present invention, references to orientations such as "top/top", "upper" and "lower" or "bottom/under" are made with reference to the normal attitude of the aircraft, i.e., the top or upper portion is more physically above the lower or bottom portion. Furthermore, the heading FWD of the aircraft when the automatic door-closing system is applied to an aircraft is also shown in fig. 1.
In the present invention, the term "module" may or may not include a physical mechanism, e.g. the door position acquisition module may be in the form of a sensor, e.g. a door position sensor or a door angular velocity sensor, etc., e.g. the calculation module 164 may be a sub-module integrated into a computer without a separate housing.
The automatic door-closing system 100 of the present invention should first include a door body 110 and a door frame 120. The door body 110 is mounted to the door frame 120 such that the door body 110 can be opened and closed with respect to the fixed door frame 120. They may be of various suitable shapes and sizes but should match each other. An operator can open the door 110 by means of a code keypad 140 provided on the door 110 or on the door frame 120 or other suitable location.
As shown in fig. 1, the door frame 120 of the present invention can include at least an open edge stud 122 and a pivoting edge stud 124. The open edge pillar 122 is adjacent to a first vertical edge of the door 110 when the door is closed, and the pivoting edge pillar 124 is adjacent to a second vertical edge of the door 110 when the door is closed. That is, the opening edge pillar 122 and the pivoting edge pillar 124 are disposed opposite to each other with respect to the door body 110. In addition, the doorframe 120 of the present invention may also include a door header assembly 126, as best shown in FIG. 3. Within the door header assembly 126 may also be disposed some of the components that will be described in detail below. Generally, the open edge pillar 122, the pivoting edge pillar 124, and the door header assembly 126 are stationary and provide relevant references for subsequent automatic door closing control.
As shown in fig. 1, the automatic door-closing system 100 further includes a pivot mechanism that can be used to connect the door body 110 to both the door frame 120, and in particular the pivoting side pillar 124, and to enable the door body 110 to pivot between the closed position and the open position. Here, the term "closed position" is the only position where the door body 110 is locked, and "open position" may mean various positions at different opening angles.
The automatic door closing system 100 of the present invention is primarily suitable for use with swing doors, rather than sliding doors, due to the inclusion of a pivoting mechanism. It is understood that the automatic door closing control unit 160 (which will be described in detail below) of the present invention can be adapted to the sliding door to also achieve the purpose of generating the attractive force or the repulsive force of the electromagnetic door-attraction mechanism 170 when approaching the closing position of the door 110, thereby better controlling the automatic closing of the door 110.
In a preferred embodiment, the pivoting mechanism may include a spring hinge 130, and the spring hinge 130 is configured to generate a centering force acting on the door body 110 when the door body 110 is opened. It will be appreciated that, typically, after the door 110 is opened (to some extent), such a centering force acts on the door 110 to continuously increase the pivoting speed of the door 110 toward the closed position. It is not excluded that such centering forces become less due to various resistances (e.g., due to aircraft wave motion or other environmental factors, etc.) as the door body 110 approaches the closed position.
In other words, in the present invention, the main force of the return of the door body 110 is provided by the pivot mechanism. As previously mentioned, the pivot mechanism may alternatively be configured in other mechanical configurations, such as a geared pull rod or the like. In addition to the pivoting mechanism for closing the door, the automatic door-closing system 100 of the present invention further includes an electromagnetic door-inhale mechanism 170. It will be appreciated that the electromagnetic-type door-closing mechanism is generally used as an auxiliary door-closing mechanism, rather than a primary door-closing mechanism, and is particularly useful for automatically closing a door within a range prior to the approach of the closed position or for improving the safety and reliability of the automatic door-closing.
As shown in fig. 2A, the electromagnetic door-inhale mechanism 170 of the present invention may include a magnet 172 and an electromagnetic coil 174, wherein one of the magnet 172 and the electromagnetic coil 174 is mounted on the door body 110 and the other is mounted on the fixed doorframe 120. Preferably, the other of the magnet 172 and the electromagnetic coil 174 is mounted on the open-sided pillar 122 so as to provide an electromagnetic force close thereto with respect to the door body 110 moving toward the closed position. It is also contemplated that the other of the magnet 172 and the electromagnetic coil 174 may be mounted to, for example, the door header assembly 126 proximate the open-sided stud 122.
More preferably, the magnet 172 may be attached to the door body 110, particularly, to the inside thereof, and the electromagnetic coil 174 may be attached to the opening pillar 122. In some embodiments, the magnet 172 is configured as a permanent magnet and the electromagnetic coil 174 is an actuation coil. The mounting of the magnet 172 and the solenoid 174 is well known in the art and will not be described further herein.
In order to solve the problems of the door 110 not being closed in place, the loss of the lock, and the operator being caught by the excessive closing force of the door 110, the automatic door-closing system 100 according to the present invention may include an automatic door-closing control unit 160. The automatic door-closing control unit 160 may be a separate control unit, but may also be a control unit integrated with the control units of other systems.
The automatic door-closing control unit 160 may include a door position acquisition module for acquiring a position signal of the door body 110, particularly an angle signal of the door body 110 with respect to a closed position (which may also be referred to as a "door deflection/pivot position signal"). In the present invention, the pivot angle is the angle Φ between the door body reference line a in the door opening state and the door body reference line B in the closing state, and the pivot angle of the door body 110 can be clearly shown in fig. 5. In some embodiments, the door position acquisition module may include a door angle sensor.
Preferably, as shown in fig. 2B, the door angle sensor may be composed of an angle decoder 162a and an angle scale 162B. The angle sensor may be a mechanical encoder or a photoelectric encoder. When the angle sensor is a photoelectric encoder, the angle decoder 162a may be mounted on a stationary door frame 120, such as on the door header assembly 126, and particularly within a slot of the door header assembly 126. The angle decoder 162a can read the electro-optical signal on the angle scale 162b (e.g., by providing a viewing hole in the bottom of the header assembly). The angular scale 162b may be designed as an arc-shaped grating centered on the pivot axis 132 of the door body 110. For example, the grating may encode the door opening angle according to a 2-system code of three or more bits, and is fixed on the top of the door 110, and when the door 110 is opened, the angle decoder 162a (e.g., through the viewing hole at the bottom of the header assembly) may read the angle code on the angle scale 162b, as shown in fig. 3. It will be clear that the invention is not limited to this particular form of angle sensor.
The automatic door-closing control unit 160 may further include a calculation module 164, and the calculation module 164 may be configured to calculate a current angular velocity of the door body 110 based on the position signal. The calculation module 164 may include a door position calculation module 164a to generate door position data. Door position data may also be provided directly to the calculation module 164 by the aforementioned door angle sensors. However, at least the calculation module 164 includes a door angular velocity calculation module 164b, and the instantaneous angular velocity (also referred to as "current angular velocity") of the door body 110 can be calculated by the door angular velocity calculation module 164 b.
Preferably, the calculation module 164 may be configured to calculate the current angular velocity only when the door body 110 is at a distance less than or equal to a threshold pivot angle from the final closed position during the door closing process (which may be referred to as "entering the velocity monitoring zone/monitoring range"), so as to improve the control efficiency. For example, the threshold angle may be about 30 degrees, but is not limited thereto.
In addition, the automatic door-closing control unit 160 may further include a door-inhale solenoid control unit 166. The door-inhale solenoid control unit 166 may be configured to control actuation of a solenoid 174 of the electromagnetic door-inhale mechanism 170 (e.g., forward and reverse switching through a solenoid control switch 176) based on the calculated current angular velocity to generate an attractive force or a repulsive force to a magnet 172 (e.g., a permanent magnet mounted on the door body 110) to control automatic closing of the door body 110. Herein, the term "generating an attraction force or a repulsion force" means that the electromagnetic coil 174 can generate an attraction force or a repulsion force for the magnet 172 according to specific control requirements, and does not exclude that the attraction force is changed into a repulsion force or the repulsion force is changed into an attraction force, but it should be noted that the attraction force and the repulsion force cannot be generated at the same time.
Preferably, the door-attraction solenoid control unit 166 may be configured to control the solenoid to provide a repulsive force to the magnet 172 when the current angular velocity is greater than the threshold angular velocity and to provide an attractive force to the magnet when the current angular velocity is equal to or less than the threshold angular velocity. It is also contemplated that the solenoid coil 174 is controlled to provide a repulsive force to the magnet 172 when the current angular velocity is greater than a first threshold angular velocity and to provide an attractive force to the magnet 172 when the current angular velocity is equal to or less than a second threshold angular velocity, wherein the first threshold angular velocity is greater than the second threshold angular velocity. In other words, in this case, there may be a range of angular velocities in which the electromagnetic coil 174 provides neither a repulsive force nor an attractive force to the magnet 172.
For example, the threshold angular velocity may be 18 degrees/second. That is, the electromagnetic coil 174 of the electromagnetic door stopper mechanism 170 is reversely connected at the triggering speed ω ≧ 18 degrees/sec. It will be appreciated that actuation of solenoid 174 is conventional in the art and will not be described in detail herein.
As shown in fig. 4, the door position calculation module 164a and the door angular velocity calculation module 164b receive signals from the door position acquisition module and issue corresponding signals to the door suction solenoid control unit 166 to control actuation, e.g., forward and reverse, of the solenoid 174. In other embodiments, however, the door position calculation module 164a and the door angular velocity calculation module 164b may be integrated into one calculation module 164.
In addition, the automatic door-closing system 100 of the present invention further includes a drop lock control unit 180, and the drop lock control unit 180 is configured to automatically drop lock the door body 110 when it is in the final closed position. The locking mechanism of the particular automatic drop lock may take a variety of suitable forms, such as the door lock mechanism 150 shown in fig. 1, and will not be described in further detail herein.
Advantageously, the drop lock control unit 180 may further comprise an alarm device 182, the alarm device 182 being capable of issuing an alarm under preset conditions. For example, an alarm may be issued when the door 110 is not in the closed position after the solenoid 174 provides a threshold amount of attraction to the magnet 172. The alarm may be in the form of an indicator light or a sound to inform the operator that the lock has not been dropped as desired. Thus, the operator has the opportunity to check whether foreign objects have caught the door.
The invention further relates to a method for automatically closing the door 110, in particular for controlling the automatic closing of the door 110. The door body 110 is pivotable between a closed position and an open position by a pivot mechanism. One of the magnet 172 and the electromagnetic coil 174 may be mounted to the door body 110 and the other may be mounted to the door frame 120 associated with the door body 110. The method comprises the following steps: acquiring a position signal of the door body 110; calculating the current angular velocity of the door body 110 based on the position signal; the actuation (e.g., forward and reverse turn-on) of the solenoid 174 is controlled based on the current angular velocity to generate an attractive force or a repulsive force to the magnet 172, thereby controlling the automatic closing of the door body 110.
In the following, the control logic of the automatic door closing according to the invention is explained by way of example with the aid of fig. 6:
assuming that a centering force is generated by the spring hinge 130 after the door body 110 is opened, the centering force acts on the door body 110, which may cause the rotating speed of the door body 110 to be continuously increased.
When the door body 110 enters the angular velocity monitoring area range, i.e., within the threshold angle (for example, it is learned by the door position acquisition module 162 that the door body 110 enters a range less than a pivot angle such as 20 degrees, 30 degrees, 40 degrees, 45 degrees, etc. from the final closed position), the door angular velocity calculation module 164b starts calculating the rotational angular velocity of the door body 110.
When the current angular velocity of the door 110 is greater than the threshold angular velocity, for example, 18 °/S per second, the door-inhale solenoid control unit 166 controls the forward and reverse coil control switches on the coil circuit to turn on the solenoid 174 to generate a repulsive force with respect to the magnet 172, so that the pivoting angular velocity of the door 110 can be reduced at the final stage of the closing of the door 110.
When the door 110 is opened at a small angle, the spring centering force is small. At this time, if the front angular velocity of the door body 110 is less than or equal to the threshold angular velocity, for example, 18 °/S, the door-attracting solenoid control unit 166 controls the forward and reverse coil control switches on the coil circuit to reverse the coils to generate an attracting force with respect to the magnet 172, thereby closing the door body 110 in place. If the door 110 is clamped by a foreign object, and the resultant force of the electromagnetic attraction and the spring hinge 130 still cannot close the door 110 in place, the lock-falling control unit 180 sends a door unlock alarm to the crew through an indicator lamp or a sound alarm device, and informs the crew of checking whether the foreign object blocks the door.
Therefore, according to the automatic door closing system 100 or the method for automatically closing the door 110 of the present invention, when the door 110 approaches the closed position, the door 110 can be sucked to the closed position by the suction force, and after the door 110 is closed, the power of the electromagnetic coil 174 can be cut off by the control circuit, so as to lock the door 110 (for example, a cockpit door), thereby avoiding the problem that the cockpit door cannot be automatically locked. Meanwhile, the instantaneous angular speed of the door body 110 at the final stage of door closing can be adjusted by the principle of electromagnetic control, so that the door body 110 is prevented from being closed too fast, having loud impact sound or injuring the limbs of an operator.
The numerical values given in the embodiments are only examples and do not limit the scope of the present invention. In addition, other components or steps not recited in the claims or specification of the invention may be present as a whole. Moreover, the singular reference of a component does not exclude the plural reference of such components.
The disclosed methods, apparatus, and systems should not be limited in any way. Rather, the present disclosure encompasses all novel and non-obvious features and aspects of the various disclosed embodiments, both individually and in various combinations and sub-combinations with each other. The disclosed methods, apparatus, and systems are not limited to any specific aspect or feature or combination thereof, nor do any of the disclosed embodiments require that any one or more specific advantages be present or that a particular or all technical problem be solved.
The present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. An automatic door-closing system, the automatic door-closing system (100) comprising:
a door body (110);
a door frame (120);
a pivoting mechanism for connecting the door body (110) with the door frame (120) and configured to enable the door body (110) to pivot between a closed position and an open position;
characterized in that said automatic door closing system (100) further comprises:
an electromagnetic door-inhale mechanism (170), wherein the electromagnetic door-inhale mechanism (170) comprises a magnet and an electromagnetic coil (174), one of the magnet (172) and the electromagnetic coil (174) is installed on the door body (110), and the other is installed on the door frame (120);
an automatic door-closing control unit (160) comprising:
the door position acquisition module (162) is used for acquiring a position signal of the door body (110);
a calculation module (164) configured to calculate a current angular velocity of the door body (110) based on the position signal;
a door-attraction solenoid control unit (166), the door-attraction solenoid control unit (166) being configured to control actuation of the solenoid (174) based on the current angular velocity to generate an attractive or repulsive force to the magnet (172) to control automatic closing of the door body (110).
2. The automatic door-closing system according to claim 1, wherein said door frame (120) comprises:
the edge opening upright post (122) is close to the first vertical edge when the door body (110) is closed;
a pivoting edge pillar (124) that is adjacent to the second vertical edge of the door body (110) when the door body is closed;
wherein the pivoting mechanism is used for connecting the door body (110) with the pivoting side upright post, and the other one of the magnet (172) and the electromagnetic coil (174) is arranged on the opening side upright post (122).
3. The automatic door-closing system according to claim 2, wherein the calculation module (164) is configured to calculate the current angular velocity when the door body (110) is less than or equal to a threshold pivot angle from the closed position during door closing.
4. The automatic door-closing system according to claim 3, wherein said door-attraction solenoid control unit (166) is configured to control said solenoid (174) to provide a repulsive force to said magnet (172) when said current angular velocity is greater than a threshold angular velocity, and to otherwise provide an attractive force thereto.
5. The automatic door-closing system according to any one of claims 1 to 4, wherein the pivoting mechanism comprises a spring hinge (130), the spring hinge (130) being configured to generate a centering force acting on the door body (110) when the door body (110) is opened.
6. The automatic door closing system according to claim 5, wherein the door position acquisition module (162) includes an angle decoder (162a) and an angle scale (162b), the angle scale (162b) is fixed on top of the door body (110) to encode a pivoting angle of the door body (110), and the angle decoder (162a) is installed in a door header assembly (126) of the door frame (120) and can read an angle code on the angle scale (162 b).
7. The automatic door-closing system of claim 5, further comprising a drop lock control unit (180) configured to automatically drop lock the door body (110) when in the closed position.
8. The automatic door closing system of claim 7, wherein the drop lock control unit (180) further comprises an alarm device (182), the alarm device (182) being configured to alarm when the door body (110) is not in the closed position after the solenoid (174) provides the attraction force to the magnet (172) for a threshold amount of time.
9. A method for automatically closing a door body, the door body (110) being pivotable between a closed position and an open position by means of a pivoting mechanism, wherein one of a magnet (172) and an electromagnetic coil (174) is mounted on the door body (110) and the other is mounted on a door frame (120) associated with the door body (110);
characterized in that the method comprises:
acquiring a position signal of the door body (110);
calculating a current angular velocity of the door body (110) based on the position signal;
and controlling the actuation of the electromagnetic coil (174) based on the current angular velocity so as to generate an attraction force or a repulsion force on the magnet (172), thereby controlling the automatic closing of the door body (110).
10. The method of claim 9, wherein the current angular velocity is calculated when the door body (110) is less than or equal to a threshold pivot angle from the closed position during door closing.
11. The method according to claim 10, wherein the electromagnetic coil is controlled to provide a repulsive force to the magnet (172) when the current angular velocity is greater than a threshold angular velocity and an attractive force thereto otherwise.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110902394.XA CN113513229A (en) | 2021-08-06 | 2021-08-06 | Automatic door closing system and method for automatically closing door body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110902394.XA CN113513229A (en) | 2021-08-06 | 2021-08-06 | Automatic door closing system and method for automatically closing door body |
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| CN113513229A true CN113513229A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110902394.XA Pending CN113513229A (en) | 2021-08-06 | 2021-08-06 | Automatic door closing system and method for automatically closing door body |
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