Emergency door closing positioner for fireproof door

Abstract

The utility model belongs to the technical field of door closer auxiliary components, and particularly relates to a fireproof door emergency door closing positioner which comprises a connecting plate, a fixing sleeve, a mounting seat, a linkage gasket and a mounting plate, the connecting plate is mounted on the right side of the fixing sleeve, and an adjusting component is arranged between the connecting plate and the fixing sleeve. A steel ball and a first spring are installed in the fixing sleeve, the steel ball is located at the left end of the fixing sleeve, the first spring makes extrusion contact with the steel ball, an installation base is arranged at the left end of the fixing sleeve, a positioning shifting piece is inserted into the installation base, and positioning clamping teeth are inserted into the rear side of the positioning shifting piece in a limiting mode. After the door closing positioner and the door closer are installed on the fireproof door, the door closing positioner can enable the fireproof door to be in a normally open state, when a fire disaster occurs, the fixed tin sheet is heated and melted, the first half gasket and the second half gasket are bounced off under the effect of the second spring, the linkage gasket loses the positioning effect, and then the fireproof door is closed under the effect of the door closer.

Description

Technical Field

[0001] The utility model relates to the field of door closer auxiliary components, in particular to an emergency door closer positioning device for fire doors. Background Technique

[0002] After the existing fire door closers are installed, the fire doors are mostly in a normally closed state. Due to the tight use of elevators and other reasons, the staircase passages are frequently used. At this time, without the influence of fire, the normally closed state of the fire doors requires people to push the fire doors when entering and leaving, bringing certain inconvenience to users. Some users, for the sake of convenience, will use equipment (such as fire extinguishers) to block the fire doors, making the fire doors unable to close, resulting in the fire doors being unable to play a role when a real fire occurs. Therefore, the utility model provides an emergency door closer positioning device for fire doors to assist the door closer. Content of the Utility Model

[0003] The purpose of the utility model is to provide an emergency door closer positioning device for fire doors to solve the above problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an emergency door closer positioning device for fire doors, including a connecting plate, a fixing sleeve, a mounting seat, a linkage gasket and a mounting plate. The connecting plate is installed on the right side of the fixing sleeve. An adjusting component is arranged between the connecting plate and the fixing sleeve. Steel balls and a first spring are installed in the fixing sleeve. The steel balls are located at the left end of the fixing sleeve and the first spring is in extrusion contact with the steel balls. A mounting seat is arranged at the left end of the fixing sleeve. A positioning dial is inserted into the mounting seat. A positioning tooth is inserted and limited at the rear side of the positioning dial. An mounting plate is installed at the rear side of the positioning tooth. An inserting block is fixedly connected to the front side of the mounting plate. A screw rod extends to the front side of the mounting seat. A clamping plate is inserted and limited on the inserting block. The clamping plate is in contact with the positioning tooth and the contact surfaces are all friction surfaces. A bushing is sleeved on the front side of the mounting seat. A fixing gasket is installed on the front side of the bushing. A linkage gasket is installed on the front side of the fixing gasket. The front end of the screw rod is screwed with a fixing nut. The fixing nut is located in front of the linkage gasket. The linkage gasket includes a first half gasket and a second half gasket. The right ends of the first half gasket and the second half gasket are rotatably connected. A fixing tin sheet and a second spring are installed on the left side between the first half gasket and the second half gasket. A limiting groove is opened at the right end of the positioning dial. The left side of the steel ball is located in the limiting groove.

[0005] Preferably, a mounting hole is opened in the fixing sleeve. Steel balls are installed in the mounting hole and the left end of the mounting hole is in limit fit with the steel balls. A first spring is installed in the mounting hole. The first spring is in extrusion contact with the steel balls.

[0006] Preferably, an internal thread is provided on the right side of the mounting hole. An extrusion block is installed in the mounting hole. The extrusion block is located between the steel ball and the first spring. An adjusting block is screwed in the mounting hole. The adjusting block is located on the right side of the first spring.

[0007] Preferably, the adjusting assembly includes an adjusting rod. The right end of the adjusting rod is rotatably connected to the connecting plate. An external thread is provided on the left side of the adjusting rod. The adjusting rod and the mounting hole are threaded through the cooperation of the external thread and the internal thread.

[0008] Preferably, a locknut is screwed on the adjusting rod. The locknut is located on the right side of the fixed sleeve.

[0009] Preferably, a cutting surface is provided in the middle of the fixed sleeve. The cutting surface exposes the mounting hole.

[0010] Preferably, positioning teeth are provided on the positioning dial. The positioning teeth are in limit plug-in connection with the positioning locking teeth.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1) The fire door emergency closing positioner of the present utility model needs to be used in cooperation with a door closer. After the closing positioner and the door closer are installed on the fire door, the closing positioner can keep the fire door in the normally open state. When a fire occurs, the fixed tin sheet is heated and melted. Under the action of the second spring, the first half gasket and the second half gasket bounce open, causing the linkage gasket to lose its positioning function. Then, under the action of the door closer, the fire door closes.

[0013] 2) The linkage gasket functions as a gasket in this structure. After the first half gasket and the second half gasket bounce open, the structure equivalent to a gasket between the fixed nut and the screw rod is missing, enabling the relative rotation between the clamping plate and the positioning locking teeth, and further enabling the relative rotation of the mounting plate, thereby releasing the fixation of the fire door.

[0014] 3) In a fire-free state, after the door closer is manually positioned and installed, since the positioning dial is fixed under the action of the steel ball, the positioning locking teeth are fixed. The positioning locking teeth are in frictional contact with the clamping plate, fixing the clamping plate. Further, the mounting plate is fixed and cannot rotate, fixing the fire door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the fixed sleeve of the present utility model;

[0017] Figure 3 is a schematic cross-sectional top view of the cooperation between the positioning dial and the mounting plate of the present utility model;

[0018] In the figure: 1, connecting plate; 2, adjusting rod; 3, external thread; 4, locknut; 5, mounting hole; 6, cutting surface; 7, fixing sleeve; 8, mounting seat; 9, linkage gasket; 10, mounting plate; 11, fixing nut; 12, first half gasket; 13, second half gasket; 14, fixing tin sheet; 15, second spring; 16, steel ball; 17, extrusion block; 18, first spring; 19, adjusting block; 20, positioning dial; 21, positioning tooth; 22, limiting groove; 23, inserting block; 24, clamping plate; 25, positioning clamping tooth; 26, bushing; 27, screw; 28, fixing gasket. Specific embodiments

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounting", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] Embodiment:

[0023] Please refer to Figures 1-3, the present utility model provides a technical solution: a fire door emergency closing positioner, which includes a connecting plate 1, a fixing sleeve 7, a mounting seat 8, a linkage gasket 9 and a mounting plate 10. The connecting plate 1 is installed on the right side of the fixing sleeve 7, and an adjusting component is arranged between the connecting plate 1 and the fixing sleeve 7. A steel ball 16 and a first spring 18 are installed in the fixing sleeve 7. The steel ball 16 is located at the left end of the fixing sleeve 7 and the first spring 18 is in extrusion contact with the steel ball 16. The mounting seat 8 is arranged at the left end of the fixing sleeve 7, and the fixing sleeve 7 and the mounting seat 8 are integrally formed. A positioning dial 20 is inserted into the mounting seat 8, and there is a gap between the positioning dial 20 and the inner wall of the mounting seat 8. A positioning tooth 25 is inserted and limited at the rear side of the positioning dial 20, and the positioning dial 20 and the positioning tooth 25 cannot rotate relative to each other. The mounting plate 10 is installed at the rear side of the positioning tooth 25. An insertion block 23 is fixedly connected to the front side of the mounting plate 10, and a screw rod 27 is fixedly connected to the front side of the insertion block 23. The screw rod 27 extends to the front side of the mounting seat 8. A clamping plate 24 is inserted and limited on the insertion block 23, and the insertion block 23 and the clamping plate 24 cannot rotate relative to each other. The clamping plate 24 and the positioning tooth 25 are in contact and the contact surfaces are all friction surfaces. A bushing 26 is sleeved on the front side of the mounting seat 8, a fixing gasket 28 is installed on the front side of the bushing 26, and the linkage gasket 9 is installed on the front side of the fixing gasket 28. A fixing nut 11 is screwed on the front end of the screw rod 27, and the fixing nut 11 is located on the front side of the linkage gasket 9. The linkage gasket 9 includes a first half gasket 12 and a second half gasket 13. The right ends between the first half gasket 12 and the second half gasket 13 are rotatably connected, and a fixing tin sheet 14 and a second spring 15 are installed on the left side between the first half gasket 12 and the second half gasket 13. After the fixing tin sheet 14 melts, the acting force of the second spring 15 causes the first half gasket 12 and the second half gasket 13 to bounce open. A limiting groove 22 is opened at the right end of the positioning dial 20, and the left side of the steel ball 16 is located in the limiting groove 22.

[0024] An installation hole 5 is opened in the fixing sleeve 7. The steel ball 16 is installed in the installation hole 5 and the left end of the installation hole 5 is in limiting cooperation with the steel ball 16. The first spring 18 is installed in the installation hole 5, and the first spring 18 is in extrusion contact with the steel ball 16. Under the action of the first spring 18, the steel ball 16 can move after being stressed. That is, in the structure of the present application, when a certain force is applied to the positioning dial 20, the steel ball 16 can be pressed into the installation hole 5, so that the steel ball 16 is separated from the limiting groove 22. At this time, the positioning dial 20 can rotate. The outer contour of the positioning dial 20 is similar to an eccentric wheel. When the steel ball 16 and the limiting groove 22 are separated, the steel ball 16 resets under the action of the first spring 18, and the positioning dial 20 can freely rotate within a certain angle. Relying on this principle, the angle size of the automatic closing of the fire door can be manually adjusted. After being pushed to the set angle, it can play a positioning role (make the steel ball 16 enter the limiting groove 22). After positioning, by applying a larger force, the steel ball 16 and the limiting groove 22 are separated, and the positioning state can be released.

[0025] There is an internal thread on the right side of the mounting hole 5. The extrusion block 17 is installed in the mounting hole 5. The extrusion block 17 is located between the steel ball 16 and the first spring 18. A regulating block 19 is screwed in the mounting hole 5, and the regulating block 19 is located on the right side of the first spring 18.

[0026] The adjusting assembly includes an adjusting rod 2. The right end of the adjusting rod 2 is rotatably connected to the connecting plate 1. An external thread 3 is provided on the left side of the adjusting rod 2. The adjusting rod 2 and the mounting hole 5 are threaded through the cooperation of the external thread 3 and the internal thread, which is convenient for length adjustment.

[0027] A locknut 4 is screwed on the adjusting rod 2, and the locknut 4 is located on the right side of the fixed sleeve 7.

[0028] A cutting plane 6 is provided in the middle of the fixed sleeve 7, and the cutting plane 6 exposes the mounting hole 5.

[0029] Positioning teeth 21 are provided in the positioning dial 20, and the positioning teeth 21 are inserted and limited with the positioning card teeth 25.

[0030] Working principle: The fire door emergency closing positioner of the present utility model needs to be used in cooperation with a closing device. After the closing positioner and the closing device are installed on the fire door, the closing positioner can keep the fire door in the normally open state. The linkage gasket 9 plays the role of a gasket in this structure. When a fire occurs, the fixed tin sheet 14 is heated and melted. Under the action of the second spring 15, the first half gasket 12 and the second half gasket 13 bounce open, causing the linkage gasket 9 to lose its positioning function. Then, under the action of the closing device, the fire door closes. After the first half gasket 12 and the second half gasket 13 bounce open, it is equivalent to the lack of a gasket structure between the fixed nut 11 and the screw rod 27, enabling a gap to be generated between the clamping plate 24 and the positioning card teeth 25 for relative rotation. Thus, the mounting plate 10 can rotate relatively, thereby releasing the fixation of the fire door. In a fire-free state, after the closing device is manually positioned and installed, since the positioning dial 20 is fixed under the action of the steel ball 16, the positioning card teeth 25 are fixed. The positioning card teeth 25 and the clamping plate 24 are in frictional contact, so that the clamping plate 24 is fixed. Then, the mounting plate 10 is fixed and cannot rotate, fixing the fire door.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Fire door emergency closing positioner, comprising a connecting plate (1), a fixing sleeve (7), a mounting seat (8), a linkage gasket (9) and a mounting plate (10), characterized in that: A connecting plate (1) is installed on the right side of the fixed sleeve (7). An adjusting assembly is provided between the connecting plate (1) and the fixed sleeve (7). A steel ball (16) and a first spring (18) are installed in the fixed sleeve (7). The steel ball (16) is located at the left end of the fixed sleeve (7), and the first spring (18) is in pressing contact with the steel ball (16). An installation seat (8) is provided at the left end of the fixed sleeve (7). A positioning dial (20) is inserted into the installation seat (8). A positioning tooth (25) is inserted and limited at the rear side of the positioning dial (20). An installation plate (10) is installed at the rear side of the positioning tooth (25). A plug (23) is fixedly connected to the front side of the installation plate (10). A screw rod (27) is fixedly connected to the front side of the plug (23). The screw rod (27) extends to the front side of the installation seat (8). A clamping plate (24) is inserted and limited on the plug (23). The clamping plate (24) is in contact with the positioning tooth (25), and the contact surfaces are all friction surfaces. A bushing (26) is sleeved on the front side of the installation seat (8). A fixing gasket (28) is installed on the front side of the bushing (26). A linkage gasket (9) is installed on the front side of the fixing gasket (28). The front end of the screw rod (27) is screwed with a fixing nut (11). The fixing nut (11) is located on the front side of the linkage gasket (9). The linkage gasket (9) includes a first half gasket (12) and a second half gasket (13). The right ends of the first half gasket (12) and the second half gasket (13) are rotatably connected. A fixing tin sheet (14) and a second spring (15) are installed on the left side between the first half gasket (12) and the second half gasket (13). A limiting groove (22) is opened at the right end of the positioning dial (20). The left side of the steel ball (16) is located in the limiting groove (22).

2. The emergency closing positioner for fire doors according to claim 1, wherein: An installation hole (5) is opened in the fixed sleeve (7). A steel ball (16) is installed in the installation hole (5), and the left end of the installation hole (5) is in limit fit with the steel ball (16). A first spring (18) is installed in the installation hole (5). The first spring (18) is in pressing contact with the steel ball (16).

3. The emergency closing and positioning device for fire doors according to claim 2, characterized in that: Internal threads are provided on the right side of the installation hole (5). An extrusion block (17) is installed in the installation hole (5). The extrusion block (17) is located between the steel ball (16) and the first spring (18). An adjusting block (19) is screwed in the installation hole (5). The adjusting block (19) is located on the right side of the first spring (18).

4. The emergency door closer positioning device for fire doors according to claim 3, characterized in that: The adjusting assembly includes an adjusting rod (2). The right end of the adjusting rod (2) is rotatably connected to the connecting plate (1). External threads (3) are provided on the left side of the adjusting rod (2). The adjusting rod (2) and the installation hole (5) are threaded through the cooperation of the external threads (3) and the internal threads.

5. The emergency closing and positioning device for fire doors according to claim 4, characterized in that: A locknut (4) is screwed on the adjusting rod (2). The locknut (4) is located on the right side of the fixed sleeve (7).

6. The emergency closing and positioning device for fire doors according to claim 2, characterized in that: A cutting surface (6) is opened in the middle of the fixed sleeve (7). The cutting surface (6) exposes the installation hole (5).

7. The emergency closing and positioning device for fire doors according to claim 2, characterized in that: The positioning paddle (20) is provided with positioning teeth (21), and the positioning teeth (21) are inserted into the positioning locking teeth (25) in a limiting manner.

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