One-way locking mechanism for door opening and closing device

Abstract

The present invention discloses a one-way locking mechanism for an opening and closing door device, comprising a one-way locking portion for being arranged on a moving member and a first blocking member arranged corresponding to the one-way locking portion; the one-way locking portion has a one-way fixing unit, a second blocking member for being rotatably arranged on the moving member, and a reset component connected to the second blocking member, the reset component having an elastic structure for keeping the second blocking member in contact with the first blocking member when passing through the first blocking member; the one-way fixing unit is installed on the moving member and is located on one side of the second blocking member, and has a structure capable of abutting against the end of the second blocking member away from the rotation center thereof when the second blocking member contacts the first blocking member; the present invention enables the moving member to move only a certain distance in one direction through the cooperation between the first blocking member and the second blocking member, and there is no restriction on movement in a direction opposite to the direction.

Description

Technical Field

[0001] The invention relates to the field of fire protection equipment, in particular to a one-way locking mechanism for a door opening and closing device. Background Art

[0002] A fire door refers to a door that can meet the requirements of fire resistance, stability, integrity and thermal insulation within a certain period of time. In addition to the functions of an ordinary door, it can also prevent the spread of fire and smoke. It can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel. Fire doors are usually divided into normally closed fire doors and normally open fire doors.

[0003] Among them, the most commonly used is the normally closed fire door, which uses a mechanical door closer or an electric control door opening and closing device to keep the door leaf of the fire door in a normally closed state. When a mechanical door closer is used, the mechanical door closer is mainly directly connected to the door panel of the fire door through a crank arm or a connecting rod mechanism. When a person passes through the fire door, the fire door is opened manually, and then the door leaf closes automatically, which will cause problems such as poor ventilation and lighting, inconvenience in passage, and the mechanical door closer cannot automatically control the opening and closing of the fire door; when an ordinary electric control door opening and closing device is used, people cannot manually open the door during the electric closing process, and in the open door state, if a fire occurs, the electric control door opening and closing device cannot automatically close the fire door when the fire protection system cuts off the power supply, and people cannot manually open the door or the resistance to opening the door is large. Therefore, it is necessary to find a method that can solve such problems. Summary of the invention

[0004] In view of this, it is necessary to overcome at least one of the above-mentioned defects in the prior art, and the present invention provides a one-way locking mechanism for an opening and closing door device, comprising a one-way locking portion for being arranged on a moving member and a first blocking member arranged corresponding to the one-way locking portion; the one-way locking portion has a one-way fixing unit, a second blocking member for rotatingly arranged on the moving member, and a reset component connected to the second blocking member, the reset component being arranged on the moving member and having the function of keeping the second blocking member in an upright state so that the end of the second blocking member is aligned with the first blocking member when the second blocking member passes through the first blocking member. The one-way fixing unit is used to be installed on the moving part and is located on one side of the second blocking part, and has a structure abutting against the end of the second blocking part away from its rotation center. The corresponding arrangement of the first blocking part and the one-way locking part means that the first blocking part is arranged at a predetermined position so that when the one-way locking part passes through the predetermined position, the second blocking part contacts the first blocking part and is pushed by the first blocking part to form a one-way flipping or blocked state; the predetermined position is a pre-set position on the running track of the moving part so that the moving part can only pass in one direction when it moves to the predetermined position.

[0005] According to the prior art described in the background technology of this patent, when the existing mechanical door closer is used, it will cause problems such as poor ventilation and lighting, inconvenience in passage, and it is impossible to automatically control the opening and closing of the fire door; when an ordinary electric door opening and closing device is used, under any circumstances, personnel cannot manually open the door or the door opening resistance is large; and the one-way locking mechanism for the door opening and closing device disclosed in the present invention, the reset member keeps the second blocking member in an upright state, and when the one-way locking portion moves to a predetermined position with the moving member so that the second blocking member contacts the first blocking member, the end of the second blocking member away from its rotation center is resisted by the one-way fixing unit, such as the rear side of the lower end of the second blocking member or The front side of the upper end portion is resisted by the one-way fixing unit, and the upper end of the second blocking member cannot rotate counterclockwise but can only rotate clockwise. Therefore, when passing the predetermined position backward, the second blocking member is blocked by the first blocking member and cannot continue to move backward. However, when passing the predetermined position forward, the second blocking member is pushed by the first blocking member to rotate clockwise and staggered with the first blocking member, so that it can continue to move forward. Similarly, when the front side of the lower end portion of the second blocking member or the rear side of the upper end portion is resisted by the one-way fixing unit, it cannot pass through the predetermined position forward and can only pass through the first blocking member when moving backward and contacting the first blocking member. After the moving member passes the predetermined position, the second blocking member is reset under the elastic action of the reset mechanism.

[0006] The moving member can be a linear drive mechanism for pushing the door to open or close, and the moving member is slidably arranged on a track extending in a direction perpendicular to the door panel. A one-way locking mechanism is arranged on the moving member so that the moving member can only pass through a predetermined position forward but not backward. When the moving member opens the door, the moving member is pushed backward to the predetermined position by the reaction force of the door. At this time, the moving member is locked by the first blocking member and cannot continue to move backward. The moving member continues to push the door to open it; when the door is in a closed state, no matter the second blocking member is in front of the first blocking member or behind the first blocking member, the moving member can move forward, that is, in any case, personnel can manually open the door.

[0007] In addition, the one-way locking mechanism for a door opening and closing device disclosed in the present invention also has the following additional technical features:

[0008] Furthermore, the end portion of the second blocking member has an inclined structure.

[0009] Furthermore, the one-way fixing unit is used to abut against the rear side of the lower end portion or the front side of the upper end portion of the second blocking member; the first blocking member is located on the lower side of the rotation center of the second blocking member, and the lower end portion of the second blocking member away from the rotation center of the second blocking member contacts the first blocking member when the second blocking member passes through the predetermined position; the front side of the lower end portion of the second blocking member has a slanted downward structure, or the first blocking member is located on the upper side of the rotation center of the second blocking member, and the upper end portion of the second blocking member away from the rotation center of the second blocking member contacts the first blocking member when the second blocking member passes through the predetermined position; the front side of the upper end portion of the second blocking member has a slanted upward structure.

[0010] At this time, the one-way locking mechanism is used to allow the moving member to move forward but not backward. By setting the front side of the lower end of the second blocking member to be an oblique downward structure, when the second blocking member passes through the first blocking member from the rear end of the first blocking member, the mutual driving force between the second blocking member and the first blocking member is reduced, so that the door panel can be opened more easily and the service life of the first blocking member and the second blocking member is extended; similarly, the front side of the upper end of the second blocking member is set to have an oblique upward structure to reduce the mutual driving force between the second blocking member and the first blocking member, so that the door panel can be opened more easily and the service life of the first blocking member and the second blocking member is extended.

[0011] Furthermore, the one-way fixing unit is used to abut against the front side of the lower end portion or the rear side of the upper end portion of the second blocking member; the first blocking member is located on the lower side of the rotation center of the second blocking member, and the lower end portion of the second blocking member away from the rotation center contacts the first blocking member when the second blocking member passes through the first blocking member; the rear side of the lower end portion of the second blocking member has a slanted downward structure, or the first blocking member is located on the upper side of the rotation center of the second blocking member, and the upper end portion of the second blocking member away from the rotation center contacts the first blocking member when the second blocking member passes through the first blocking member; the rear side of the upper end portion of the second blocking member has a slanted upward structure.

[0012] At this time, the one-way locking mechanism is used to allow the moving part to only move backwards and not forwards.

[0013] Furthermore, the one-way fixing unit includes a magnetic component and an iron block component rotatably installed on the moving part. The magnetic component is arranged corresponding to the iron block component and has a magnetic structure that can attract the iron block component so that the iron block component abuts against the end of the second blocking member away from its rotation center.

[0014] Furthermore, the iron block assembly is arranged on the front side of the magnetic assembly, and the iron block assembly abuts against the front side of the second blocking member; or, the iron block assembly is arranged on the rear side of the magnetic assembly, and the iron block assembly abuts against the rear side of the second blocking member.

[0015] Furthermore, the iron block assembly comprises an iron block mounting seat for fixedly mounting on the moving part and an iron block mounted on the iron block mounting seat.

[0016] Furthermore, the one-way locking mechanism also includes a rotating shaft assembly, which includes a rotating shaft mounting seat for fixedly mounting on the moving member and a rotating shaft mounted on the rotating shaft mounting seat; the iron block assembly and the second blocking member are respectively rotatably mounted on the rotating shaft.

[0017] Furthermore, the iron block mounting seat has an iron block mounting plate and two rotating shaft mounting plates respectively arranged vertically on the iron block mounting plate and located on both sides of the iron block, the iron block is mounted on the iron block mounting plate, a rotating shaft mounting hole is arranged on the rotating shaft mounting plate, and the rotating shaft is mounted on the rotating shaft mounting hole; the one-way locking portion has two second blocking members, the two second blocking members are rotatably mounted on the rotating shaft and are respectively located on both sides of the rotating shaft mounting plate, and extension structures extending to both sides of the iron block mounting plate and used to abut against the ends of the second blocking members away from the axis of the rotating shaft are also formed on both sides of the iron block mounting plate.

[0018] Furthermore, the upper end of the extension structure is lower than the lower end of the rotating shaft mounting plate or the lower end of the extension structure is higher than the upper end of the rotating shaft mounting plate.

[0019] Furthermore, a limiting ring for limiting the positions of the rotating shaft mounting plate and the second blocking member on the rotating shaft is fixedly mounted on the rotating shaft.

[0020] Furthermore, the magnetic component is an electromagnet component, which has a structure that attracts the iron block component after being energized.

[0021] Furthermore, after being energized, the electromagnet assembly attracts the iron block assembly to flip around the rotating shaft until the iron block abuts against the electromagnet assembly and the extending structure abuts against the end of the second blocking member.

[0022] For example, the fire door is opened or closed by pushing or pulling a moving part, and a one-way locking mechanism is arranged on the moving part so that the moving part can only pass through a predetermined position forward but not backward. In the event of a fire, the fire protection system cuts off the power supply and the fire door has not yet been closed, the moving part is in the power-off state and cannot be changed. If the moving part cannot move backward, the fire door will be in the current state and cannot be closed. An electromagnet assembly is used. When the electromagnet assembly is powered off, the iron block assembly will no longer be attracted by the electromagnet assembly and cannot resist the second blocking member. Therefore, when retreating through the predetermined position, the second blocking member is pushed and flipped by the first blocking member and is offset from the first blocking member to pass through the predetermined position. Therefore, the resistance to closing the door is small at this time and the door can be easily closed.

[0023] Furthermore, the electromagnet assembly comprises an electromagnet mounting plate for fixedly mounting on the moving member and an electromagnet mounted on one side of the electromagnet mounting plate.

[0024] Furthermore, the reset member is a torsion spring.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0027] Figure 1 A schematic diagram of the structure of a one-way locking mechanism for a door opening and closing device provided by the present invention;

[0028] Figure 2 This is a schematic structural diagram of the iron block mounting seat provided by the present invention.

[0029] Among them, 1 is a moving part, 2 is a one-way locking part, 3 is a first blocking part, 4 is a one-way fixing unit, 5 is a second blocking part, 6 is a reset member, 7 is a magnetic component, 8 is an iron block component, 9 is an iron block mounting seat, 10 is an iron block, 11 is a rotating shaft, 12 is a limiting ring, 13 is an electromagnet mounting plate, and 14 is an electromagnet. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "horizontal", "vertical", etc. 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.

[0032] The concept of the present invention is as follows: when the one-way locking portion moves with the moving member to make the second blocking member contact the first blocking member, the end of the second blocking member away from its rotation center is resisted by the one-way fixing unit, for example, the rear side of the lower end portion or the front side of the upper end portion of the second blocking member is resisted by the one-way fixing unit, and the upper end of the second blocking member cannot rotate counterclockwise but can only rotate clockwise, so that it cannot pass through the predetermined position backward, but can pass through the predetermined position forward; similarly, when the front side of the lower end portion or the rear side of the upper end portion of the second blocking member is resisted by the one-way fixing unit, it cannot pass through the predetermined position forward and can only pass through the first blocking member when it moves backward and contacts the first blocking member.

[0033] Figure 1 A schematic diagram of the structure of a one-way locking mechanism for a door opening and closing device provided by the present invention; Figure 2 This is a schematic structural diagram of the iron block mounting seat provided by the present invention.

[0034] like Figure 1 As shown, according to an embodiment of the present invention, a one-way locking mechanism for an opening and closing door device comprises a one-way locking portion 2 for being arranged on a moving member 1 and a first blocking member 3 arranged corresponding to the one-way locking portion 2; the one-way locking portion 2 comprises a one-way fixing unit 4, a second blocking member 5 for being arranged on the moving member 1 for rotation, and a reset member 6 connected to the second blocking member 5, the reset member 6 being arranged on the moving member 1 and having a function of keeping the second blocking member 5 in an upright state so that the end of the second blocking member 5 contacts the first blocking member 3 when the second blocking member 5 passes through the first blocking member 3. Elastic structure; the one-way fixing unit 4 is installed on the moving part 1 and is located on one side of the second blocking member 5, and has a structure abutting against the end of the second blocking member 5 away from its rotation center. The corresponding arrangement of the first blocking member 3 and the one-way locking portion 2 means that the first blocking member 3 is arranged at a predetermined position so that when the one-way locking portion 2 passes through the predetermined position, the second blocking member 5 contacts the first blocking member 3 and is pushed by the first blocking member 3 to form a one-way flipping or blocked state; the predetermined position is a pre-set position on the running track of the moving part 1 so that the moving part 1 can only pass in one direction when it moves to the predetermined position.

[0035] According to the prior art described in the background technology of this patent, when the existing mechanical door closer is used, it will cause problems such as poor ventilation and lighting, inconvenience in passage, and it is impossible to automatically control the opening and closing of the fire door; when an ordinary electric-controlled door opening and closing device is used, under any circumstances, personnel cannot manually open the door or the door opening resistance is large; and the one-way locking mechanism for the door opening and closing device disclosed in the present invention, the reset component 6 keeps the second blocking member 5 in an upright state, and when the one-way locking portion 2 moves to a predetermined position with the moving member 1 so that the second blocking member 5 contacts the first blocking member 3, the end of the second blocking member 5 away from its rotation center is resisted by the one-way fixing unit 4, such as the rear side or upper end of the lower end of the second blocking member 5. When the front side of the second blocking member 5 is pressed by the one-way fixing unit 4, the upper end of the second blocking member 5 cannot rotate counterclockwise but can only rotate clockwise. Therefore, when the second blocking member 5 passes the predetermined position backward, the second blocking member 5 is blocked by the first blocking member 3 and cannot continue to move backward. However, when the second blocking member 5 passes the predetermined position forward, the second blocking member 5 is pushed by the first blocking member 3 to rotate clockwise and staggered with the first blocking member 3, so that it can continue to move forward. Similarly, when the front side of the lower end portion of the second blocking member 5 or the rear side of the upper end portion is pressed by the one-way fixing unit 4, it cannot pass through the predetermined position forward and can only pass through the first blocking member 3 when it moves backward and contacts the first blocking member 3. After the moving member 1 passes the predetermined position, the second blocking member 5 is reset under the elastic action of the reset mechanism 6.

[0036] The moving member 1 can be a linear drive mechanism for pushing the door to open or close, and the moving member 1 is slidably arranged on a track extending in a direction perpendicular to the door panel. A one-way locking mechanism is arranged on the moving member 1 so that the moving member 1 can only pass through a predetermined position forward but not backward. When the moving member 1 opens the door, the moving member 1 is pushed backward to the predetermined position by the reaction force of the door. At this time, the moving member 1 is locked by the first blocking member 3 and cannot continue to move backward. The moving member 1 continues to push the door to open it; when the door is in a closed state, no matter the second blocking member 5 is in front of the first blocking member 3 or behind the first blocking member 3, the moving member 1 can move forward, that is, in any case, the person can manually open the door.

[0037] In addition, the one-way locking mechanism for a door opening and closing device disclosed in the present invention also has the following additional technical features:

[0038] According to some embodiments of the present invention, the end of the second blocking member 5 has an inclined structure, such as Figure 1 shown.

[0039] According to some embodiments of the present invention, the one-way fixing unit 4 is used to abut against the rear side of the lower end portion or the front side of the upper end portion of the second blocking member 5; the first blocking member 3 is located on the lower side of the rotation center of the second blocking member 5, and the lower end portion of the second blocking member 5 away from the rotation center contacts the first blocking member 3 when the second blocking member 5 passes through the predetermined position; the front side of the lower end portion of the second blocking member 5 has an oblique downward structure, or the first blocking member 3 is located on the upper side of the rotation center of the second blocking member 5, and the upper end portion of the second blocking member 5 away from the rotation center contacts the first blocking member 3 when the second blocking member 5 passes through the predetermined position; the front side of the upper end portion of the second blocking member 5 has an oblique upward structure.

[0040] At this time, the one-way locking mechanism is used to allow the moving member 1 to move forward but not backward. By setting the front side of the lower end of the second blocking member 5 to be an oblique downward structure, when the second blocking member 5 passes through the first blocking member from the rear end of the first blocking member, the mutual driving force between the second blocking member and the first blocking member 3 is reduced, so that the door panel can be opened more easily and the service life of the first blocking member 3 and the second blocking member 5 is extended; similarly, the front side of the upper end of the second blocking member 5 is set to have an oblique upward structure to reduce the mutual driving force between the second blocking member 5 and the first blocking member 3, so that the door panel can be opened more easily and the service life of the first blocking member 3 and the second blocking member 5 is extended.

[0041] According to some embodiments of the present invention, the one-way fixing unit 4 is used to abut against the front side of the lower end portion or the rear side of the upper end portion of the second blocking member 5; the first blocking member 3 is located on the lower side of the rotation center of the second blocking member 5, and the lower end portion of the second blocking member 5 away from the rotation center of the second blocking member 5 contacts the first blocking member 3 when the second blocking member 5 passes through the first blocking member 3; the rear side of the lower end portion of the second blocking member 5 has an oblique downward structure, or the first blocking member 3 is located on the upper side of the rotation center of the second blocking member 5, and the upper end portion of the second blocking member 5 away from the rotation center of the second blocking member 5 contacts the first blocking member 3 when the second blocking member 5 passes through the first blocking member 3; the rear side of the upper end portion of the second blocking member 5 has an oblique upward structure.

[0042] At this time, the one-way locking mechanism is used to allow the moving member 1 to only move backwards and not forwards.

[0043] According to some embodiments of the present invention, the one-way fixed unit 4 includes a magnetic component 7 and an iron block component 8 rotatably installed on the moving part 1. The magnetic component 7 is arranged corresponding to the iron block component 8, and has a magnetic structure that can attract the iron block component 8 so that the iron block component 8 abuts against the end of the second blocking member 5 away from its rotation center.

[0044] According to some embodiments of the present invention, the iron block assembly 8 is arranged on the front side of the magnetic assembly 7, and the iron block assembly 8 abuts against the front side of the second blocking member 5; or, the iron block assembly 8 is arranged on the rear side of the magnetic assembly 7, and the iron block assembly 8 abuts against the rear side of the second blocking member 5.

[0045] According to some embodiments of the present invention, the iron block assembly 8 comprises an iron block mounting seat 9 for fixedly mounting on the moving member 1 and an iron block 10 mounted on the iron block mounting seat 9 .

[0046] According to some embodiments of the present invention, the one-way locking mechanism also includes a rotating shaft assembly, which includes a rotating shaft mounting base for fixedly mounted on the moving member 1 and a rotating shaft 11 mounted on the rotating shaft mounting base; the iron block assembly 8 and the second blocking member 5 are respectively rotatably mounted on the rotating shaft 11.

[0047] According to some embodiments of the present invention, the iron block mounting seat 9 has an iron block mounting plate and two rotating shaft mounting plates respectively arranged vertically on the iron block mounting plate and located on both sides of the iron block, the iron block 10 is mounted on the iron block mounting plate, a rotating shaft mounting hole is arranged on the rotating shaft mounting plate, and the rotating shaft 11 is mounted on the rotating shaft mounting hole; the one-way locking portion 2 has two second blocking members 5 and two reset components 6, the two second blocking members 5 are rotatably mounted on the rotating shaft 11 and are respectively located on both sides of the rotating shaft mounting plate, and the two sides of the iron block mounting plate are also respectively formed with extension structures extending to both sides of the iron block mounting plate and used to abut against the ends of the second blocking members 5 away from the axis of the rotating shaft; the two reset components 6 are respectively connected to the two second blocking members 5, such as Figure 2 shown.

[0048] According to some embodiments of the present invention, the upper end of the extension structure is lower than the lower end of the shaft mounting plate or the lower end of the extension structure is higher than the upper end of the shaft mounting plate. According to some embodiments of the present invention, a limiting ring 12 for limiting the position of the shaft mounting plate and the second blocking member 5 on the shaft 11 is also fixedly mounted on the shaft 11. Figure 1 shown.

[0049] According to some embodiments of the present invention, the magnetic component 7 is an electromagnet component having a structure that attracts the iron block component after being energized.

[0050] According to some embodiments of the present invention, after being energized, the electromagnet assembly attracts the iron block assembly 8 to flip around the rotating shaft 11 until the iron block 10 abuts against the electromagnet assembly and the extending structure abuts against the end of the second blocking member 5 .

[0051] For example, the fire door is opened or closed by pushing or pulling the moving part 1, and the one-way locking mechanism is set on the moving part 1 so that the moving part 1 can only pass through the predetermined position forward but not backward. In the event of a fire, the fire protection system cuts off the power and the fire door has not yet been closed, the moving part 1 is in the power-off state and cannot be changed. If the moving part 1 cannot move backward, the fire door will be in the current state and cannot be closed. An electromagnet assembly is used. When the electromagnet assembly is powered off, the iron block assembly 8 will no longer be attracted by the electromagnet assembly and cannot resist the second blocking member 5. Therefore, when retreating through the predetermined position, the second blocking member 5 is pushed and flipped by the first blocking member 3 and staggered with the first blocking member 3 to pass through the predetermined position. Therefore, the resistance to closing the door is small at this time and the door can be easily closed.

[0052] According to some embodiments of the present invention, the electromagnet assembly comprises an electromagnet mounting plate 13 for fixedly mounting on the moving member 1 and an electromagnet 14 mounted on one side of the electromagnet mounting plate 13 .

[0053] According to one embodiment of the present invention, the reset member is a torsion spring. Figure 1 shown.

[0054] According to one embodiment of the present invention, in order to make the movable member only move forward and not move backward, the first blocking member 3 is a crossbeam arranged on the running track of the movable member 1, the second blocking member 5 is a baffle, the rotating shaft mounting plate and the two baffles are respectively used to be rotatably mounted on the movable member 1 through the same rotating shaft 11, and the lower ends of the two baffles are respectively located on the front sides of the two extending structures, the upper ends of the extending structures are lower than the lower ends of the rotating shaft mounting holes, and the iron block 25 is mounted on the front side of the iron block mounting plate; the electromagnet assembly is used to be fixedly arranged on the movable member 1 and located on the front side of the iron block assembly 8, and the electromagnet 14 is mounted on the rear side of the electromagnet mounting plate 13; after the electromagnet assembly is energized, it attracts the iron block assembly 8 to flip around the rotating shaft as the center to abut against the electromagnet 14, and at the same time, the front sides of the two extending structures are respectively abutted against the rear sides of the lower ends of the two baffles, at this time, the upper end of the baffle is higher than the horizontal part of the crossbeam (i.e. Figure 1 The lower end surface of the horizontal portion of the horizontal beam shown in the figure); the height of the one-way fixing unit 4 is lower than the height of the lower end surface of the horizontal portion of the horizontal beam; the two reset members 6 are respectively installed on the two ends of the rotating shaft, one end of each reset member 6 is connected to the corresponding baffle, and the other end is abutted against the rear side of the moving member, as shown in FIG. Figure 1 shown.

[0055] The invention ...

[0056] Although the specific implementation modes of the present invention have been described in detail with reference to a number of illustrative embodiments of the present invention, it must be understood that a variety of other modifications and embodiments may be devised by those skilled in the art, which will fall within the spirit and scope of the principles of the present invention; specifically, within the scope of the foregoing disclosure, drawings and claims, reasonable variations and improvements may be made in the arrangement of components and / or dependent combination layouts without departing from the spirit of the present invention; except for variations and improvements in components and / or layouts, the scope is defined by the appended claims and their equivalents.

Claims

1. A one-way locking mechanism for a door opening and closing device, characterized in that: include: A one-way locking portion provided on the moving member and a first blocking member provided corresponding to the one-way locking portion; The one-way locking portion comprises a one-way fixing unit, a second blocking member for rotating the moving member, and a reset member connected to the second blocking member, wherein the reset member has an elastic structure for keeping the second blocking member in contact with the first blocking member when passing through the first blocking member; the one-way fixing unit is used to be installed on the moving member and is located on one side of the second blocking member, and has a structure capable of abutting against an end of the second blocking member away from its rotation center; The one-way fixing unit includes a magnetic component and an iron block component rotatably mounted on the moving member, the magnetic component is arranged corresponding to the iron block component, and has a structure capable of attracting the iron block component so that the iron block component can abut against the end of the second blocking member away from its rotation center, and the end of the second blocking member has an inclined structure; The one-way locking mechanism also includes a rotating shaft assembly, which includes a rotating shaft mounting seat for mounting on the moving member and a rotating shaft mounted on the rotating shaft mounting seat; the iron block assembly and the second blocking member are respectively rotatably mounted on the rotating shaft; the iron block mounting seat has an iron block mounting plate and two rotating shaft mounting plates respectively vertically arranged on the iron block mounting plate and located on both sides of the iron block, the iron block is mounted on the iron block mounting plate; the rotating shaft mounting plate is provided with a rotating shaft mounting hole, and the rotating shaft is mounted on the rotating shaft mounting hole; the one-way locking portion has two second blocking members, which are rotatably mounted on the rotating shaft and are respectively located on both sides of the rotating shaft mounting plate, and extension structures extending to both sides of the iron block mounting plate and used to abut against the ends of the second blocking member away from the axis of the rotating shaft are also formed on both sides of the iron block mounting plate; The moving member is a linear driving mechanism for pushing the door to open or close, and the moving member is slidably arranged on a track extending in a direction perpendicular to the door panel.

2. A one-way locking mechanism for a door opening and closing device according to claim 1, characterized in that: The iron block assembly comprises an iron block mounting seat for fixedly mounting on the moving member and an iron block mounted on the iron block mounting seat.

3. The one-way locking mechanism for a door opening and closing device according to claim 1, characterized in that: A limiting ring for limiting the positions of the rotating shaft mounting plate and the second blocking member on the rotating shaft is also installed on the rotating shaft.

4. The one-way locking mechanism for a door opening and closing device according to claim 1, characterized in that: The magnetic component is an electromagnet component, which has a structure capable of attracting the iron block component after being energized.

5. A one-way locking mechanism for a door opening and closing device according to claim 4, characterized in that: The electromagnet assembly comprises an electromagnet mounting plate for fixedly mounting on the moving member and an electromagnet mounted on one side of the electromagnet mounting plate.

6. A one-way locking mechanism for a door opening and closing device according to claim 1, characterized in that: The reset member is a torsion spring.

Images