Automatic door closing device for multi-person dormitory

Abstract

The utility model relates to the technical field of automatic door closing, in particular to an automatic door closing device for a multi-person dormitory. Comprising a driving part fixedly arranged on a wall body; the control module is electrically connected with the driving part; the device further comprises a winding shaft, a winding drum and a connecting rope. The winding shaft is fixedly connected with the driving part, and the driving part drives the winding shaft to rotate in the first direction unidirectionally; the first direction is a clockwise or anticlockwise direction around the axis of the winding shaft; one end of the connecting rope is connected with the door body to form a connecting point, and the other end is connected with the winding drum; the winding drum is rotationally connected to the outer side of the winding shaft, and a one-way locking mechanism is arranged between the winding drum and the winding shaft and enables the winding shaft to drive the winding drum to rotate in the first direction. By means of the automatic door closing device, an existing door body can be slightly transformed, and automatic door closing is achieved. And meanwhile, the one-way locking mechanism can also prevent the door opening resistance from being increased.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic door closing, in particular to an automatic door closing device for a dormitory with multiple people. Background Art

[0002] Most of the school dormitories use a bed-on-bed-under-desk arrangement. There are many people living in the dormitory, and it is often the case that someone goes out without closing the dormitory door. The dormitory corridor is often noisy. At this time, other people are resting in bed and it is easy to be woken up with the dormitory door open, and getting out of bed is a very troublesome thing, especially in winter, everyone is more reluctant to get out of bed and close the door, but it will be very noisy and cold to open the door, so students have to get out of bed and close the door. It may even affect the relationship between roommates and cause conflicts. There is an automatic door closing device in the prior art, which is specifically fixed to the wall through a winding box and connected to the door body by a rope. This automatic door closing device is mostly used in the home. There are some problems in using it in the dormitory. 1. Most school dormitories use metal anti-theft doors, which are equivalent to the entrance doors at home. Compared with the door of the bedroom, it is heavier, and the shrapnel of the winding box is difficult to close the door tightly; 2. There are all kinds of students in the dormitory, and inevitably there are some more impetuous students who open the door quickly and easily tear the winding box. Utility Model Content

[0003] In order to solve the above-mentioned prior art problems, the utility model provides an automatic door closing device for a dormitory with multiple people, comprising:

[0004] A driving component is fixedly arranged on the wall;

[0005] A control module, electrically connected to the driving component;

[0006] It also includes a winding shaft, a winding drum and a connecting rope;

[0007] The winding shaft is fixedly connected to the driving component, and the driving component drives the winding shaft to rotate unidirectionally along a first direction;

[0008] Wherein, the first direction is: a clockwise or counterclockwise direction around the axis of the winding shaft;

[0009] One end of the connecting rope is connected to the door body to form a connection point, and the other end is connected to the winding drum;

[0010] The winding drum is rotatably connected to the outer side of the winding shaft, and a one-way locking mechanism is provided between the two. The one-way locking mechanism enables the winding shaft to drive the winding drum to rotate along a first direction.

[0011] Furthermore, the control module includes:

[0012] A control unit is preset with a first angle value and a first time;

[0013] A signal acquisition unit, which acquires and sends a second angle value and a second time to the control unit;

[0014] Wherein, the first angle value is: the preset angle of the winding drum when the door is closed and the connecting rope is tightened;

[0015] The second angle value is: the real-time angle of the winding drum;

[0016] The first time is: a preset time length;

[0017] The second time is: the length of time that the winding drum is in the second angle value state;

[0018] When the second time is greater than the second time, the control module sends a door closing instruction to the driving component to drive the winding assembly to close the door.

[0019] Further, the control unit is preset with a first resistance value;

[0020] The signal collection unit collects the second resistance value;

[0021] The first resistance value is: when the door is closed, the combined force of the door shaft friction and the resistance of the lock tongue to the movement of the door;

[0022] The second resistance value is: the real-time resistance when the door moves;

[0023] When the second resistance value is greater than the first resistance value, the second time is reset to zero and the driving component stops.

[0024] Furthermore, the one-way locking mechanism includes:

[0025] A first blocking member, fixedly disposed on a side wall of the winding shaft;

[0026] An electromagnetic component, fixedly arranged on the inner wall of the winding drum, and having a magnetic attraction surface;

[0027] A second blocking member, slidably connected to the inner wall of the winding drum and disposed below the electromagnetic member;

[0028] The electromagnetic component and the driving component are started and stopped simultaneously;

[0029] When the electromagnetic member is activated, the second blocking member is attracted to move upward to the magnetic attraction surface;

[0030] The second blocking member is in abutment with the first blocking member, and the abutment direction is the radial direction of the winding shaft.

[0031] Furthermore, the inner wall of the winding drum has a guide rail, and the guide travel of the guide rail is: the axial direction of the winding drum;

[0032] Furthermore, it also includes a guide structure;

[0033] The guide structure is fixedly arranged at the corner of the door frame;

[0034] The guide structure is an annular structure, and the connecting rope is arranged inside the annular structure;

[0035] The guide structure further includes a pulley, and the pulley is fixedly arranged inside the annular structure;

[0036] The rotating shaft of the pulley is perpendicular to the axis of the annular structure.

[0037] Further, the height of the guide structure from the ground is L1;

[0038] The distance between one end of the winding drum and the ground is L2, and the distance between the other end and the ground is L3;

[0039] L3>L1>L2.

[0040] Furthermore, the distance between the connection point and the side edge of the door is less than 10 cm;

[0041] The distance between the highest position of the connecting rope and the inner top surface of the door frame is less than 5 cm;

[0042] The door closing side is: a wall surface having a lock tongue hole in the width direction of the door frame.

[0043] Furthermore, it also includes a power module,

[0044] The power supply module is electrically connected to the control module and the driving component to provide electric energy to the control module and the driving component.

[0045] Further, the control module has a power switch;

[0046] The power switch has a guide rope, one end of which is connected to the power switch, and the other end of which is less than 1.6 meters from the ground.

[0047] The beneficial effect of the utility model is that, through the multi-person dormitory door closing device of the present application, the existing door body can be modified to achieve automatic door closing. At the same time, the one-way locking mechanism of the present application can achieve automatic door closing without increasing the resistance when opening the door, so as to achieve the effect of no feeling when opening the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1This is a three-dimensional structural diagram of a multi-person dormitory door closing device provided by the utility model;

[0049] Figure 2 A three-dimensional structural diagram of a multi-person dormitory door closing device provided by the utility model from another perspective;

[0050] Figure 3 for Figure 1 A magnified schematic diagram of point a;

[0051] Figure 4 for Figure 2 The enlarged schematic diagram at b;

[0052] Figure 5 This is a schematic diagram of the three-dimensional structure of the winding drum provided by the utility model;

[0053] Figure 6 This is a schematic diagram of the structure inside the winding drum provided by the utility model;

[0054] Figure 7 This is a schematic diagram of the structure inside the winding drum from another perspective provided by the utility model;

[0055] Figure 8 The utility model is a front view of a door closing device for a dormitory with multiple people provided by the utility model.

[0056] Figure numerals: 1. door body; 2. wall; 3. driving component; 4. control module; 41. control unit; 42. signal acquisition unit; 5. winding shaft; 6. winding drum; 7. connecting rope; 71. connection point; 8. one-way locking mechanism; 81. first blocking member; 82. electromagnetic member; 821. magnetic surface; 83. second blocking member; 84. guide rail; 9. guide structure; 91. pulley; 101. power module; 102. guide rope. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0058] Embodiment 1:

[0059] Reference Figure 1-Figure 8 shown.

[0060] An automatic door closing device for a dormitory with multiple people, comprising:

[0061] A driving component 3 is fixedly arranged on the wall 2;

[0062] A control module 4, electrically connected to the driving component 3;

[0063] The winding assembly at least comprises: a winding shaft 5, a winding drum 6 and a connecting rope 7;

[0064] The winding shaft 5 is fixedly connected to the driving component 3, and the driving component 3 drives the winding shaft 5 to rotate unidirectionally along a first direction;

[0065] Wherein, the first direction is: a clockwise or counterclockwise direction around the axis of the winding shaft 5;

[0066] One end of the connecting rope 7 is connected to the door body 1, and the other end is connected to the winding drum 6;

[0067] The winding drum 6 is rotatably connected to the outer side of the winding shaft 5 , and a one-way locking mechanism 8 is provided between the two. The one-way locking mechanism 8 enables the winding shaft 5 to drive the winding drum 6 to rotate along a first direction.

[0068] There is an automatic door closing device that is easy to install in the prior art, which is specifically: a winding box is fixed on the wall and connected to the door body 1 through a rope. The rope is pulled by a spring inside the winding box.

[0069] However, there are some problems in applying it to dormitories. Most school dormitories use metal anti-theft doors, which are equivalent to the entrance doors at home. They are heavier than bedroom doors, so they need to be equipped with springs with greater elasticity, which will lead to the following problems:

[0070] 1. There will be great resistance when opening the door;

[0071] 2. There is often a need to open the door for ventilation in the dormitory, but at this time the door body 1 is always pulled by the spring and cannot remain open, or at least a very heavy object is required to keep the door body 1 open;

[0072] 3. There are all kinds of students in the dormitory, and inevitably there are some more impetuous students. When opening the door quickly, it is very easy to tear the cable box.

[0073] 4. Not only when opening the door, because the door body 1 always has a pulling force in the closing direction, when some students slam the door and leave in excitement, the door and frame will be subjected to a greater impact force, which may easily shatter the upper glass, which will not only damage school property, but also may cause harm to students.

[0074] In this regard, the present embodiment provides an automatic door closing device for a dormitory with multiple people. The device comprises a driving component 3, a control module 4 and a winding assembly. The driving component 3 can be specifically configured as a motor, and the control module 4 is connected to the driving component 3 to control the driving component 3 to start or stop. The winding assembly is a double-layer structure, wherein the inner layer is a winding shaft 5 connected to the driving component 3; the outer layer is a winding drum 6, which is rotationally connected to the winding shaft 5; and a one-way locking mechanism 8 is provided between the two.

[0075] More specifically, the driving component 3 is provided with a mounting plate, through which the driving component 3 is fixedly arranged in the wall 2, and the mounting plate can also be used as a loading unit connected to other components.

[0076] The driving component 3 drives the winding shaft 5 to rotate in the first direction, which is: clockwise or counterclockwise around the axis of the winding shaft 5; in fact, the driving component 3 only needs to have a forward rotation function and does not need to have a reverse rotation function. For example, when the winding drum 6 rotates counterclockwise, it can continuously wind the connecting rope 7 so that the door body 1 continuously approaches the door frame, then the first direction is the counterclockwise rotation direction of the winding shaft 5; otherwise, it is clockwise. In other words, the clockwise or counterclockwise direction of the winding shaft 5 and the winding drum 6 is not important, what is important is that the winding drum 6 can rotate in the opposite direction.

[0077] Door opening action: when the student opens the door, the winding shaft 5 does not move (the driving component 3 can be set as a motor with a self-locking function), the door body 1 lengthens the connecting rope 7, and the winding drum 6 rotates independently to lengthen the connecting rope 7.

[0078] Door closing action: the control module 4 controls the driving component 3 to start, and the driving component 3 drives the winding shaft 5 to rotate. At the same time, the one-way locking mechanism 8 is triggered to drive the winding drum 6 to rotate together, and the connecting rope 7 is wound to close the door.

[0079] Example 2

[0080] Reference Figure 1-Figure 8 shown.

[0081] The control module 4 includes:

[0082] A control unit 41 is preset with a first angle value and a first time;

[0083] A signal acquisition unit 42, which acquires and sends a second angle value and a second time to the control unit 41;

[0084] Wherein, the first angle value is: the preset angle of the winding drum 6 when the door body 1 is closed and the connecting rope 7 is tightened;

[0085] The second angle value is: the real-time angle of the winding drum 6;

[0086] The first time is: a preset time length;

[0087] The second time is: the length of time that the winding drum 6 is in the second angle value state;

[0088] When the second time is greater than the second time, the control module 4 sends a door closing instruction to the driving component 3 to drive the winding assembly to close the door.

[0089] There are many details about when to automatically close the door. 1. Generally speaking, forgetting to close the door only happens occasionally, and it is impossible to always forget to close the door. When the student turns to close the door, the connecting rope 7 is actually not retracted. Therefore, the control module 4 cannot use the state of the door body 1 as the basis for whether the driving component 3 is running.

[0090] 2. It is understandable that forgetting to close the door is a long-term problem. For example, student A went out to play in the morning and forgot to close the door. The other students were sleeping. At this time, the door was in a state where no one closed it. At this time, the automatic door closing device needs to be operated. For example, student A only went to the toilet and will come back in a short time. At this time, the automatic door closing device does not need to be started. At the same time, it takes a certain amount of time for students to go out.

[0091] In view of the above problems, the control module 4 of the present application is provided with a control unit 41 and a signal acquisition unit 42;

[0092] The signal acquisition unit 42 can be specifically configured as an angle sensor to obtain the angle value of the winding drum 6. The angle value of the winding drum 6 is based on the angle of the winding drum 6 when the door body 1 is closed and the connecting rope 7 is tightened. The starting angle is 0°. As the connecting rope 7 drives the winding drum 6 to rotate when the door is opened, the second angle value increases. One rotation of the winding drum 6 is 360°, two rotations are 720°, and so on.

[0093] Meanwhile, the control unit 41 is preset with a first angle value, and the preset angle can be equal to the starting angle.

[0094] The control unit 41 is provided with a clock module, which is preset with a first time and obtains a second time in real time. When the second angle value is greater than the first angle value, the clock module starts recording, that is, the second time starts to increase until the second time is greater than the first time, and the driving component 3 is started to retract the connecting rope 7 to close the door. During the process of closing the door, the second angle value is continuously reduced until the second angle value is equal to the first angle value, and the control unit 41 sends a stop command to the driving component 3. Among them, the first time is set to the time when students usually enter and leave the dormitory, for example, the first time is equal to 3 minutes. That is, the driving component 3 is started 3 minutes after the door is opened.

[0095] By comparing the angle values, it is not necessary to use whether the door is in an open state as a basis for starting the device, thereby avoiding the problem of students actively closing the door and causing the connecting rope 7 to become loose.

[0096] Example 3

[0097] Reference Figure 1-Figure 8 shown.

[0098] The control unit 41 is preset with a first resistance value;

[0099] The signal collection unit 42 collects the second resistance value;

[0100] When the second resistance value is greater than the first resistance value, the driving component 3 stops running;

[0101] The first resistance value is: when the door body 1 is closed, the combined force of the door shaft friction and the resistance of the lock tongue to the movement of the door body 1;

[0102] The second resistance value is: the real-time resistance when the door body 1 moves.

[0103] If the dormitory needs to be ventilated and the door is open for a long time, students can turn off the automatic door closing device. However, there are some scenarios where students need to open the door for a while, but this period of time may be longer than the first time. For example, two students are waiting for student A outside the door, and student A may be mopping the floor. In this scenario, the automatic door closing device is likely to affect student A's mopping of the floor. When student A mops the door, the mop is often just at the door opening. If the automatic door closing device is started at this time, it will definitely affect student A's mopping of the floor. The power of the driving component 3 of the automatic door closing device will not be too large, so the final result is often that student A is forced to block the door body 1 from closing, causing the driving component 3 to be overloaded and damaged or the connecting rope 7 to break.

[0104] In this embodiment, the signal acquisition unit 42 acquires the second resistance value, which is the real-time resistance when the door body 1 moves. There are many ways to obtain the second resistance value, such as setting a tension sensor at the connection position between the door body 1 and the connecting rope 7, or obtaining the resistance value through the current change of the driving component 3.

[0105] Taking the setting of the tension sensor as an example, the first thing to be clear is that the position of the winding assembly is fixed in the wall 2, while the connection position of the connecting rope 7 and the door body 1 will change with the rotation of the door body 1. The section of the connecting rope 7 from the winding assembly to the door frame corner is close to parallel to the wall 2, while the section of the connecting rope 7 from the connection point 71 to the door frame corner is close to perpendicular to the wall 2 (the closer to the closed state, the closer the connecting rope 7 and the wall 2 are to perpendicular). Therefore, the closer the two sections of the connecting rope 7 are to perpendicularity, the greater the pressure of the connecting rope 7 on the corner of the wall 2, the greater the friction, and the worse the force transmission effect of the connecting rope 7.

[0106] That is to say, in the absence of interference from other external forces, the resistance at the position of the door body 1 closest to the door frame is greater, and the door body 1 at this position will also be interfered by the lock tongue, so the resistance at this time is the largest. The resistance value at this time is used as the preset first resistance value, so that the resistance value in the entire door closing process is always less than the first resistance value (in the absence of other external forces).

[0107] The signal acquisition unit 42 collects the second resistance value. The above content has already explained that if the door body 1 is not affected by external force during the closing process, there will be no situation where the resistance value is greater than the first resistance value. Correspondingly, when the door body 1 is closed and a situation where the resistance value is greater than the first resistance value occurs, it means that the door body 1 is blocked by external force, and the second time is reset to zero. When the second time is reset to zero, it means that the second time is less than the first time. Since the door is not closed, the second angle value is still greater than the first angle value, and the second time is still increasing until it is greater than the first time again.

[0108] For example, the first time is three minutes, and Student A is mopping the floor at the door when the automatic door closing device is activated. Student A can directly block the door body 1. At this time, the second resistance value will be greater than the first resistance value, and the driving component 3 will stop working. Then Student A leaves and forgets to close the door. The second time continues to increase until it is greater than three minutes, and the driving component 3 is started again.

[0109] Example 4

[0110] Reference Figure 6 and Figure 7 shown.

[0111] The one-way locking mechanism 8 comprises:

[0112] A first blocking member 81 is fixedly disposed on the side wall of the winding shaft 5;

[0113] The electromagnetic member 82 is fixedly disposed on the inner wall of the winding drum 6 and has a magnetic attraction surface 821;

[0114] The second blocking member 83 is movably connected to the inner wall of the winding drum 6 and is disposed below the electromagnetic member 82;

[0115] The electromagnetic member 82 and the driving member 3 are started and stopped simultaneously;

[0116] When the electromagnetic member 82 is activated, the second blocking member 83 is attracted to move upward to the magnetic attraction surface 821;

[0117] The second blocking member 83 is in contact with the first blocking member 81 , and the contact direction is the radial direction of the winding shaft 5 .

[0118] The inner wall of the winding drum 6 has a guide rail 84, and the guide stroke of the guide rail 84 is: the axial direction of the winding drum 6;

[0119] The guide rail 84 is slidably connected to the second blocking member 83 and slides along the guide stroke.

[0120] It is understandable that the driving component 3 needs to use a stepper motor, and it must be a reduction motor. In order to produce a smooth door closing action, the motor shaft of the reduction motor is not easy to rotate when it is not powered, and there is a large resistance. In addition, the stepper motor itself is a precision device. Rotating the motor shaft by external force can easily lead to inaccurate stepping and damage the internal parts of the motor. Therefore, the winding drum 6 (the shaft of the motor) cannot be allowed to rotate when the door is opened to avoid damaging the motor.

[0121] At the same time, the one-way locking mechanism 8 is also the main structure of the present application to ensure that the resistance does not increase when the student opens the door.

[0122] This embodiment provides a specific structure of a one-way locking mechanism 8: it includes: a first blocking member 81, fixedly arranged on the side wall of the winding shaft 5; an electromagnetic member 82, fixedly arranged on the inner wall of the winding drum 6, and having a magnetic surface 821; a second blocking member 83, slidably connected to the inner wall of the winding drum 6, and arranged below the electromagnetic member 82.

[0123] Specifically, the first blocking member 81 can be understood as a protrusion protruding radially from the side wall of the winding shaft 5; the second blocking member 83 can be simply understood as a metal slider that slides up and down along the axial direction of the winding drum 6; the electromagnetic member 82 has a magnetic force after being started, and the magnetic force makes the second blocking member 83 and the magnetic attraction surface 821 close to each other;

[0124] When the second blocking member 83 is not in close contact with the magnetic surface 821, the second blocking member 83 and the first blocking member 81 are staggered in the vertical direction, and the first blocking member 81 and the second blocking member 83 do not interfere with each other when the winding shaft 5 rotates;

[0125] When the second blocking member 83 is in close contact with the magnetic surface 821 , the second blocking member 83 and the first blocking member 81 overlap in the vertical direction. When the winding shaft 5 rotates, the first blocking member 81 and the second blocking member 83 interfere with each other, and the winding shaft 5 drives the winding drum 6 to rotate synchronously.

[0126] When the driving component 3 is started, the electromagnetic component 82 is started at the same time; when the driving component 3 is stopped, the electromagnetic component 82 is stopped synchronously, and the second blocking component 83 falls by gravity and separates from the magnetic attraction surface 821. In fact, the driving component 3 and the electromagnetic component 82 are connected in series.

[0127] Furthermore, a guide rail 84 is provided on the inner wall of the winding drum 6. When the first blocking member 81 abuts against the second blocking member 83, the guide rail 84 can limit the freedom of the second blocking member 83, thereby preventing the first blocking member 81 from pushing the second blocking member 83 and separating the second blocking member 83 from the magnetic surface 821, causing the second blocking member 83 to fall and lose its blocking effect.

[0128] Example 5

[0129] Reference Figure 3 shown.

[0130] Also includes a guide structure 9;

[0131] The guide structure 9 is fixedly arranged at the corner of the door frame;

[0132] The guide structure 9 is an annular structure, and the connecting rope 7 is arranged inside the annular structure;

[0133] The guide structure 9 further includes a pulley 91, and the pulley 91 is fixedly disposed inside the annular structure;

[0134] The rotating shaft of the pulley 91 is perpendicular to the axis of the annular structure.

[0135] The winding drum 6 and the door body 1 are respectively located on both sides of the door opening, and the connecting rope 7 needs to pass through the door opening, so the connecting rope 7 will inevitably contact the edge of the door opening (i.e., the door frame) to form a corner. In the process of the equipment closing the door, the connecting rope 7 will rub against the door frame, which will produce a certain resistance to closing the door. In addition, long-term friction of the connecting rope 7 will greatly affect its service life and it is easy to break.

[0136] In this regard, in this embodiment, a guide pulley 91 is provided at the corner of the door frame to greatly reduce the friction force on the connecting rope 7 , increase the service life of the connecting rope 7 , and reduce the power requirement of the driving component 3 .

[0137] Example 6

[0138] Reference Figure 8 shown.

[0139] The height of the guide structure 9 from the ground is L1;

[0140] The distance between one end of the winding drum 6 and the ground is L2, and the distance between the other end and the ground is L3;

[0141] L3>L1>L2.

[0142] In Embodiment 5, it has been mentioned that the connecting rope 7 will have a corner, which can be understood as the connecting rope 7 is divided into two sections of the connecting rope 7 at the corner, and the two sections of the connecting rope 7 are in the same horizontal plane. During the process of winding the winding drum 6, it is impossible to wind the connecting rope 7 in the same plane all the time, and there is floating along the axis direction of the winding drum 6. When the guide structure 9 is higher or lower than the winding drum 6, the connecting rope 7 may be separated from the winding drum 6, causing the connecting rope 7 to fall off or get stuck. Therefore, in this embodiment, the guide structure 9 is set at a horizontal position between the two ends of the winding drum 6 to prevent the connecting rope 7 from being separated from the winding drum 6.

[0143] Example 7

[0144] Reference Figure 1-Figure 8 shown.

[0145] The distance between the connection point 71 and the side edge of the door is less than 10 cm;

[0146] The distance between the highest position of the connecting rope 7 and the inner top surface of the door frame is less than 5 cm;

[0147] The door closing side is: a wall surface having a lock tongue hole in the width direction of the door frame.

[0148] In the daily process of opening and closing the door, the closer the action point is to the door axis, the shorter the force arm is, and the more effort it takes; at the same time, the door closing method of the present application is different from manual door closing. During manual door closing, the hand and the door move synchronously, so the relative positions of the two do not change, and the direction of the force is always perpendicular to the door surface, which is the most labor-saving. However, the present application closes the door by pulling the connecting rope 7, and the position of the winding shaft 5 does not change. Therefore, during the door closing process, it cannot be guaranteed that the action force is always perpendicular to the door body 1. The closer the connection point 71 is to the door axis, the smaller the angle between the connection point 71 and the winding shaft 5 and the wall, and the smaller the component force in the closing direction (the force perpendicular to the door surface). Therefore, the method of pulling the connecting rope 7 requires more power than directly closing the door by hand.

[0149] Therefore, the distance between the connection point 71 and the door closing side edge of less than 10 cm can greatly reduce the power requirement of the drive component 3;

[0150] The distance between the highest position of the connecting rope 7 and the inner top surface of the door frame is less than 5 cm;

[0151] By arranging the device above the door body 1, the interference of the connecting rope 7 on tall students can be minimized.

[0152] Example 8

[0153] Reference Figure 3 shown.

[0154] It also includes a power module 101,

[0155] The power module 101 is electrically connected to the control module 4 and the driving component 3 to provide electrical energy to the control module 4 and the driving component 3 .

[0156] In most scenarios, there is no power socket above the door frame. Therefore, the present application has a power module 101 to power the device, and there is no need to change the dormitory circuit to the automatic door closing device lead during the installation process, which greatly simplifies the installation workload.

[0157] Example 9

[0158] Reference Figure 1 shown.

[0159] The control module 4 has a power switch;

[0160] The power switch has a guide rope 102, one end of which is connected to the power switch, and the other end of which is less than 1.6 meters from the ground.

[0161] The feature of the present application is to minimize the modification of the dormitory door, so it is impossible to set the switch at a suitable position through the circuit like an electric light. In addition, the wires cannot be set inside the wall 2, which greatly affects the beauty of the wall. At the same time, the length of the wires may be different for different door bodies 1, making it difficult to adapt to door bodies 1 of different specifications.

[0162] For this purpose, the power switch of the present application does not need to be brought close to the ground through a circuit, but a guide rope 102 is connected to the power switch, and the power is turned on and off by pulling the guide rope 102. This arrangement allows the components to be centrally arranged in one place during production and does not affect the automatic door closing device when students switch on and off. In addition, the length of the guide rope 102 can be freely set to be longer, and even if a large-sized door body 1 appears, the guide rope 102 can provide sufficient margin; when the guide rope 102 is too long, the guide rope 102 can be directly shortened during installation. This allows a good position for switching the power supply to be provided in different scenarios.

[0163] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or a specific area.

[0164] In the description of the embodiments of the present utility model, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0165] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0166] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0167] In the description of the embodiments of the present utility model, it should be understood that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0168] In the description of the embodiments of the present utility model, the term "and / or" is used herein to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0169] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic door closing device for a dormitory with multiple people, characterized in that: include: A driving component is fixedly arranged on the wall; A control module, electrically connected to the driving component; It also includes a winding shaft, a winding drum and a connecting rope; The winding shaft is fixedly connected to the driving component, and the driving component drives the winding shaft to rotate unidirectionally along a first direction; Wherein, the first direction is: a clockwise or counterclockwise direction around the axis of the winding shaft; One end of the connecting rope is connected to the door body to form a connection point, and the other end is connected to the winding drum; The winding drum is rotatably connected to the outer side of the winding shaft, and a one-way locking mechanism is provided between the two. The one-way locking mechanism enables the winding shaft to drive the winding drum to rotate along a first direction.

2. The automatic door closing device for a dormitory with multiple people according to claim 1, characterized in that: The control module includes: A control unit is preset with a first angle value and a first time; A signal acquisition unit, which acquires and sends a second angle value and a second time to the control unit; Wherein, the first angle value is: the preset angle of the winding drum when the door is closed and the connecting rope is tightened; The second angle value is: the real-time angle of the winding drum; The first time is: a preset time length; The second time is: the length of time that the winding drum is in the second angle value state; When the second time is greater than the second time, the control module sends a door closing instruction to the driving component to drive the winding assembly to close the door.

3. The automatic door closing device for a dormitory with multiple people according to claim 2, characterized in that: The control unit is preset with a first resistance value; The signal collection unit collects the second resistance value; The first resistance value is: when the door is closed, the combined force of the door shaft friction and the resistance of the lock tongue to the movement of the door; The second resistance value is: the real-time resistance when the door moves; When the second resistance value is greater than the first resistance value, the second time is reset to zero and the driving component stops.

4. The automatic door closing device for a dormitory with multiple people according to claim 3, characterized in that: The one-way locking mechanism includes: A first blocking member, fixedly disposed on a side wall of the winding shaft; An electromagnetic component, fixedly arranged on the inner wall of the winding drum, and having a magnetic attraction surface; A second blocking member, slidably connected to the inner wall of the winding drum and disposed below the electromagnetic member; The electromagnetic component and the driving component are started and stopped simultaneously; When the electromagnetic member is activated, the second blocking member is attracted to move upward to the magnetic attraction surface; The second blocking member is in abutment with the first blocking member, and the abutment direction is the radial direction of the winding shaft.

5. The automatic door closing device for a dormitory with multiple people according to claim 4, characterized in that: The inner wall of the winding drum has a guide rail, and the guide travel of the guide rail is: the axial direction of the winding drum; The guide rail is slidably connected to the second blocking member and slides along the guide stroke.

6. The automatic door closing device for a dormitory with multiple people according to claim 5, characterized in that: Also includes a guide structure; The guide structure is fixedly arranged at the corner of the door frame; The guide structure is an annular structure, and the connecting rope is arranged inside the annular structure; The guide structure further includes a pulley, and the pulley is fixedly arranged inside the annular structure; The rotating shaft of the pulley is perpendicular to the axis of the annular structure.

7. The automatic door closing device for a dormitory with multiple people according to claim 6, characterized in that: The height of the guide structure from the ground is L1; The distance between one end of the winding drum and the ground is L2, and the distance between the other end and the ground is L3; L3>L1>L2.

8. The automatic door closing device for a dormitory with multiple people according to claim 7, characterized in that: The distance between the connection point and the side edge of the door is less than 10 cm; The distance between the highest position of the connecting rope and the inner top surface of the door frame is less than 5 cm; The door closing side is: a wall surface having a lock tongue hole in the width direction of the door frame.

9. The automatic door closing device for a dormitory with multiple people according to claim 8, characterized in that: Also includes power module, The power supply module is electrically connected to the control module and the driving component to provide electric energy to the control module and the driving component.

10. The automatic door closing device for a dormitory with multiple people according to claim 9, characterized in that: The control module has a power switch; The power switch has a guide rope, one end of which is connected to the power switch, and the other end of which is less than 1.6 meters from the ground.

Images