A door closer

Abstract

The utility model relates to the technical field of door closers, and proposes a door closer, comprising: a chassis, having an installation cavity; a moving part, slidably arranged on the chassis and located in the installation cavity, and used to open or close a rolling door after the moving part slides; a first electromagnet, arranged on the chassis and located in the installation cavity, and driven to slide the moving part in the installation cavity after the first electromagnet is energized. Through the above technical solution, the problem that the opening and closing method of the rolling door opener and closer in the related art is single, and most of them can only rely on manual opening and closing operations.

Description

Technical Field

[0001] The utility model relates to the technical field of door closers, and specifically to a door closer. Background Art

[0002] In today's society, door closers, as an indispensable safety device, play a vital role in various building facilities. Its main function is to ensure that the door can be closed automatically, smoothly and safely after closing, to prevent the door from accidentally hitting or failing to close due to wind or other external forces, thereby effectively ensuring the stability and safety of the building environment. However, although the existing door closer technology is quite mature and widely used in swing doors and sliding doors, it has significant limitations in its application to the special door type of rolling shutter doors.

[0003] Rolling doors are widely used in garages, commercial stores, warehouses and other places due to their compact structure, space saving and easy operation. However, the characteristics of this type of door body determine that it is difficult for existing conventional door closers to achieve an ideal matching effect. They often do not have the technical characteristics to adapt to the rolling closing mechanism of rolling doors. Therefore, in actual use, most of them still rely on manual opening and closing operations.

[0004] In addition, considering that stores, garages and warehouses usually store a large amount of materials, the risk of fire is relatively high, so the requirements for fire protection performance and emergency evacuation capabilities are more stringent. Unfortunately, most rolling shutter doors on the market are not equipped with an automatic opening and closing system with intelligent sensing and fire alarm linkage functions, which means that once a fire occurs, it is impossible to sense it in real time and open the rolling shutter door quickly, which may delay escape time and increase the risk of property and operator loss. Utility Model Content

[0005] The utility model provides a door closer, which solves the problem that the opening and closing modes of rolling shutter door openers in the related art are single and most of them can only be opened and closed manually.

[0006] The technical solution of the utility model is as follows:

[0007] A door closer, comprising:

[0008] A chassis having a mounting cavity;

[0009] A moving member, slidably disposed on the chassis and located in the installation cavity, having a limit end;

[0010] The first electromagnet is arranged on the chassis and located in the installation cavity. When the first electromagnet is energized, it drives the moving part to slide. After sliding, the limiting end of the moving part slides into or out of the installation cavity to open or close the brake part of the fireproof rolling door mechanism.

[0011] As a further technical solution, the moving part includes:

[0012] A moving block, slidably disposed in the installation cavity, and the limiting end is located on the moving block;

[0013] A first sliding rod, disposed on the moving block;

[0014] A first elastic member has one end arranged on the moving block and the other end arranged on the chassis, and the first elastic member is sleeved on the first sliding rod, and the first elastic member is used to provide a force for the first sliding rod to move away from the first electromagnet.

[0015] As a further technical solution, the moving block has a snap-in slot and further comprises:

[0016] A first swinging member is swingably disposed on the chassis and is located in the installation cavity. The first swinging member has a clamping end and an action end located on both sides of a rotation point:

[0017] A clamping wheel, arranged on the clamping end, wherein after the first swinging member swings, the clamping wheel slides into or out of the clamping groove;

[0018] A second elastic member, one end of which is arranged on the chassis and the other end of which is arranged on the first swinging member, and is used to provide a force for the clamping wheel to slide into the clamping groove;

[0019] An abutment member, abuttingly arranged on the action end;

[0020] A second sliding rod, disposed on the abutment member;

[0021] The second electromagnet is arranged on the chassis and is located in the installation cavity. When the second electromagnet is energized, it drives the second sliding rod to slide in the installation cavity.

[0022] A third elastic member has one end arranged on the abutment member and the other end arranged on the chassis, and the third elastic member is sleeved on the second sliding rod, and the third elastic member is used to provide a force for the second sliding rod to move away from the second electromagnet.

[0023] As a further technical solution, it also includes:

[0024] A manual drive component is arranged on the chassis, and the manual drive component is used to drive the second sliding rod to slide.

[0025] As a further technical solution, the manual drive assembly includes:

[0026] A second swinging member is swingably disposed on the chassis, and the second swinging member is abutted against the abutting member. After the second swinging member swings, it drives the abutting member and the sliding rod to slide in the installation cavity;

[0027] A fourth elastic member has one end disposed on the chassis and the other end disposed on the second swinging member, and is used to provide a force for the second swinging member to move away from the abutting member.

[0028] As a further technical solution, the manual drive assembly further includes:

[0029] A pulling rope has one end arranged on the second swinging member, and the other end of the pulling rope is a pulling part. After the pulling part is pulled, the pulling rope drives the second swinging member to swing.

[0030] As a further technical solution, it also includes:

[0031] The temperature release component is used to be arranged on the indoor ceiling, and the temperature release component is connected to the pulling rope, and the temperature release component is used to pull the pulling rope.

[0032] As a further technical solution, the temperature release component includes:

[0033] A mounting frame, arranged on the outer wall of the chassis, the mounting frame having a sliding cavity;

[0034] A third sliding rod is slidably disposed in the sliding cavity, and the third sliding rod has a connecting end, and the connecting end is connected to the pulling rope;

[0035] a fifth elastic member, one end of which is arranged on the mounting frame, and the other end of which is arranged on the third sliding rod;

[0036] A tension rope, one end of which is arranged on the third sliding rod;

[0037] The fuse is used to be arranged on the indoor ceiling. The other end of the tension rope is arranged on the fuse. After the fuse is blown, the tension rope is released. The fifth elastic member is used to provide a force for the third sliding rod to move away from the fuse.

[0038] As a further technical solution, the fuse includes:

[0039] A mounting base, used for being installed on an indoor ceiling;

[0040] a sixth elastic member, one end of which is disposed on the mounting seat;

[0041] A fuse, the other end of the sixth elastic member is arranged on one end of the fuse, and the other end of the fuse is connected to the tensioning rope.

[0042] As a further technical solution, the connecting end has a through hole, and the pulling rope is used to pass through the through hole, and further includes:

[0043] A buckle is arranged on the pulling rope, and the buckle is used to abut against the connecting end. After the third sliding rod slides, the connecting end drives the pulling rope to move through the buckle.

[0044] The working principle and beneficial effects of the utility model are:

[0045] In the utility model, since the existing door closers cannot fully automatically close the rolling door, the rolling door is used by manually opening and closing. After an emergency such as a fire occurs, the rolling door cannot be quickly closed. The present invention provides a chassis, which has an installation cavity. A moving part is slidably arranged in the installation cavity. After the moving part slides in the installation cavity, the rolling door can be opened or closed. The first electromagnet is arranged in the installation cavity. Electricity is supplied to the electromagnet to make the electromagnet magnetic. Under the action of the magnetic field, the moving part overcomes the self-gravity of the rolling door and moves in the installation cavity to complete the closing of the rolling door. After the magnetic field is closed, the rolling door is closed under the action of its own weight, so that the rolling door can be fully automatically closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0047] Figure 1 It is a schematic diagram of the structure of the utility model;

[0048] Figure 2 for Figure 1 A local enlarged structural schematic diagram;

[0049] In the figure: 1, chassis, 2, mounting cavity, 3, moving part, 4, first electromagnet, 5, moving block, 6, first sliding rod, 7, first elastic part, 8, snap-in groove, 9, first swinging part, 10, snap-in wheel, 11, second elastic part, 12, abutment part, 13, second sliding rod, 14, second electromagnet, 15, third elastic part, 16, manual drive assembly, 17, second swinging part, 18, fourth elastic part, 19, pulling rope, 20, pulling part, 21, temperature release assembly, 22, mounting frame, 23, third sliding rod, 24, connecting end, 25, fifth elastic part, 26, tensioning rope, 27, fuse, 28, mounting seat, 29, sixth elastic part, 30, fuse, 31, through hole, 32, buckle, 33, limit end, 34, snap-in end, 35, action end. DETAILED DESCRIPTION

[0050] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0051] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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 this utility model can be understood according to specific circumstances.

[0052] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] Example

[0054] Reference Figure 1~Figure 2 , is an embodiment of the utility model, and proposes

[0055] A door closer comprises: a chassis 1 having an installation cavity 2; a moving part 3 slidably arranged on the chassis 1 and located in the installation cavity 2, and having a limit end 33; a first electromagnet 4 arranged on the chassis 1 and located in the installation cavity 2, and when the first electromagnet 4 is energized, it drives the moving part 3 to slide, and after sliding, the limit end 33 of the moving part 3 slides into or out of the installation cavity 2, so as to open or close the brake part of the fireproof rolling door mechanism.

[0056] In this embodiment, since the existing door closer cannot fully automatically close the rolling door, the rolling door is used by manual opening and closing. After an emergency such as a fire occurs, the rolling door cannot be quickly closed. This solution is provided with a chassis 1, and the chassis 1 has an installation cavity 2. A movable part 3 is slidably arranged in the installation cavity 2. After the movable part 3 slides in the installation cavity 2, the rolling door can be opened or closed. The first electromagnet 4 is arranged in the installation cavity 2. Energizing the electromagnet can make the electromagnet magnetic. Under the action of the magnetic field, the movable part 3 overcomes the self-gravity of the rolling door and moves in the installation cavity 2 to complete the closing of the rolling door. After the magnetic field is turned on, the rolling door closes under the action of its own weight, and the rolling door can be fully automatically closed. The first electromagnet 4 is connected to a 220V power supply and needs to be connected to a power supply for use.

[0057] Furthermore, the moving part 3 includes: a moving block 5, which is slidably set in the installation cavity 2, and the limit end 33 is located on the moving block 5; a first sliding rod 6, which is set on the moving block 5; a first elastic part 7, one end of which is set on the moving block 5, and the other end is set on the chassis 1, and the first elastic part 7 is sleeved on the first sliding rod 6, and the first elastic part 7 is used to provide a force for the first sliding rod 6 to move away from the first electromagnet 4.

[0058] In this embodiment, the moving member 3 includes a moving block 5 and a first sliding rod 6 arranged on the moving block 5. One end of the first elastic member 7 is arranged on the chassis 1, and the other end is arranged against the moving block 5. When the first electromagnet 4 is powered on, the magnetic force of the first electromagnet 4 overcomes the elastic force of the first elastic member 7 and the gravity of the rolling door itself, so that the rolling door falls freely. After the first electromagnet 4 is powered off, the first elastic member 7 provides elastic force to the moving block 5, so that the moving block 5 can be quickly reset. The brakes of the door closer and the rolling door machine contact the moving member 3, and the first electromagnet 4 of the door closer is actuated, so that the rolling door machine and the moving member 3 are separated. That is: the fireproof rolling door closer is actuated → the fireproof rolling door descends by its own weight.

[0059] Furthermore, the moving block 5 has a snap-in groove 8, and also includes: a first swinging member 9, which is swingably set on the chassis 1 and is located in the installation cavity 2, and the first swinging member 9 has a snap-in end 34 and an active end 35 located on both sides of the rotation point; a snap-in wheel 10, which is set on the snap-in end 34, and after the first swinging member 9 swings, the snap-in wheel 10 slides into or out of the snap-in groove 8; a second elastic member 11, one end of which is set on the chassis 1, and the other end is set on the first swinging member 9, for providing a force for the snap-in wheel 10 to slide into the snap-in groove 8; an abutment member 12, which is abutted on the active end 35; a second sliding rod 13, which is set on the abutment member 12; a second electromagnet 14, which is set on the chassis 1 and is located in the installation cavity 2, and after the second electromagnet 14 is energized, it drives the second sliding rod 13 to slide in the installation cavity 2. The third elastic member 15 has one end disposed on the abutment member 12 and the other end disposed on the chassis 1 , and is sleeved on the second sliding rod 13 . The third elastic member 15 is used to provide a force for the second sliding rod 13 to move away from the second electromagnet 14 .

[0060] In this embodiment, the moving block 5 is provided with a snap-in groove 8. This scheme can not only complete the closing of the rolling door by energizing and deenergizing the first electromagnet 4, but also can energize and deenergize the second electromagnet 14 to drive the second sliding rod 13 to drive the abutment 12 to slide, and the abutment 12 is arranged in abutment with the first swinging member 9, so that the sliding process of the second sliding rod 13 drives the first swinging member 9 to swing, and the snap-in wheel 10 slides into or out of the snap-in groove 8. The second elastic member 11 can drive the swinging member to reset after swinging. The door closer can be controlled to close by the first electromagnet 4 and the second electromagnet 14, realizing multi-point control and avoiding the rolling door from being unable to close due to damage of one control mode in an emergency, so that this scheme has a longer service life. The second electromagnet 14 is used with a 22V battery, which can achieve the above functions even when the main power fails.

[0061] Furthermore, it also includes: a manual driving component 16 arranged on the chassis 1, and the manual driving component 16 is used to drive the second sliding rod 13 to slide.

[0062] In this embodiment, in order to avoid emergencies or fires where the electric equipment is damaged and the rolling door cannot be closed, a manual drive component 16 is provided in this solution. When an emergency occurs, the rolling door can be closed by the manual drive component 16.

[0063] Furthermore, the manual drive assembly 16 includes: a second swinging member 17, which is swingably set on the chassis 1, and the second swinging member 17 and the abutment member 12 are abutted against each other. After the second swinging member 17 swings, it drives the abutment member 12 and the sliding rod to slide in the installation cavity 2; a fourth elastic member 18, one end of which is set on the chassis 1 and the other end is set on the second swinging member 17, and is used to provide a force for the second swinging member 17 to move away from the abutment member 12.

[0064] In this embodiment, the manual drive component 16 includes a second swinging member 17 swingingly set on the chassis 1, and the second swinging member 17 and the abutment member 12 are abutted. When the second swinging member 17 swings, it drives the abutment member 12 and the sliding rod to slide, thereby driving the first swinging member 9 to swing to complete the closing of the rolling door. One end of the fourth elastic member 18 is set on the chassis 1, and the other end is set on the second swinging member 17 to provide a force for the second swinging member 17 to reset. The manual drive component 16 can effectively avoid the problem of the electric drive component being damaged and unable to open the rolling door after an emergency occurs.

[0065] Furthermore, the manual drive assembly 16 also includes: a pulling rope 19 with one end arranged on the second swinging member 17, and the other end of the pulling rope 19 is a pulling part 20. After the pulling part 20 is pulled, the pulling rope 19 drives the second swinging member 17 to swing.

[0066] In this embodiment, the manual drive component 16 of this scheme also includes a pulling rope 19, which is arranged on the second swinging member 17. By pulling the pulling part 20, the second swinging member 17 is driven to swing, thereby completing the closing of the rolling door. The pulling rope 19 can effectively increase the closing range of the device, and the device can be remotely closed through the pulling rope 19.

[0067] Furthermore, it also includes: a temperature release component 21 for being arranged on the indoor ceiling, and the temperature release component 21 is connected to the pulling rope 19, and the temperature release component 21 is used to pull the pulling rope 19.

[0068] In this embodiment, the temperature release component 21 can quickly close the rolling shutter door after a fire occurs at the rolling shutter door installation site to prevent the fire from further causing casualties to people and objects. When the temperature reaches the required temperature of the temperature release component 21, the temperature release component 21 pulls the pull rope 19 to close the rolling shutter door.

[0069] Further, the temperature release component 21 includes: a mounting frame 22 arranged on the outer wall of the chassis 1, the mounting frame 22 having a sliding cavity; a third sliding rod 23 slidably arranged in the sliding cavity, and the third sliding rod 23 has a connecting end 24, and the connecting end 24 is connected to the pulling rope 19; a fifth elastic member 25 with one end arranged on the mounting frame 22, and the other end arranged on the third sliding rod 23; a tensioning rope 26 with one end arranged on the third sliding rod 23; a fuse 27 used to be arranged on the indoor ceiling, the other end of the tensioning rope 26 is arranged on the fuse 27, after the fuse 27 is blown, the tensioning rope 26 is released, and the fifth elastic member 25 is used to provide a force for the third sliding rod 23 to move away from the fuse 27.

[0070] In this embodiment, the temperature release assembly 21 includes a mounting frame 22, the mounting frame 22 has a sliding cavity, the third sliding rod 23 is slidably set in the sliding cavity, the third sliding rod 23 has a connecting end 24, and the connecting end 24 is connected to the wire rope. When there is no fire, the tensioning rope 26 is in a tensioning state and the fifth elastic member 25 is in a compressed state. When a fire occurs, the fuse 27 melts, and the tensioning rope 26 cancels the tensioning effect on the fifth elastic member 25. Under the action of the fifth elastic member 25, the third sliding rod 23 is driven, thereby driving the pulling rope 19 to move and completing the closing of the rolling door.

[0071] Furthermore, the fuse 27 includes: a mounting base 28 for being set on the indoor ceiling; a sixth elastic member 29 with one end set on the mounting base 28; a fuse piece 30, the other end of the sixth elastic member 29 is set on one end of the fuse piece 30, and the other end of the fuse piece 30 is connected to the tensioning rope 26.

[0072] In this embodiment, the fuse 30 of this scheme is a fusible alloy that can be melted at a relatively low temperature. When the pull rope 19 needs to be manually driven, the sixth elastic member 29 can provide a buffering force to avoid the problem of the fuse 30 breaking due to excessive force applied to the fuse 30 by manual driving.

[0073] Furthermore, the connection end 24 has a through hole 31 , and the pulling rope 19 is used to pass through the through hole 31 . It also includes: a buckle 32 arranged on the pulling rope 19 , and the pulling rope 19 is used to abut against the connection end 24 . The diameter of the through hole 31 is smaller than the width of the buckle 32 .

[0074] In this embodiment, since the pulling rope 19 wears out quickly, it needs to be observed in real time and replaced. The connecting end 24 of this scheme is provided with a through hole 31. The pulling rope 19 passes through the through hole 31 and is abutted by the buckle 32 to achieve the force on the pulling rope 19. This method can conveniently replace and repair the pulling rope 19 and can achieve the technical effects mentioned in the above technical scheme.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A door closer, characterized in that: include: A chassis (1) having a mounting cavity (2); A moving member (3) is slidably disposed on the chassis (1) and is located in the installation cavity (2), and has a limiting end (33); The first electromagnet (4) is arranged on the chassis (1) and is located in the installation cavity (2). When the first electromagnet (4) is energized, it drives the moving part (3) to slide. After sliding, the limiting end (33) of the moving part (3) slides into or out of the installation cavity (2) to open or close the brake part of the fireproof rolling door mechanism.

2. A door closer according to claim 1, characterized in that: The moving part (3) comprises: A moving block (5) is slidably disposed in the installation cavity (2), and the limiting end (33) is located on the moving block (5); A first sliding rod (6) is arranged on the moving block (5); A first elastic member (7) has one end arranged on the moving block (5) and the other end arranged on the chassis (1), and the first elastic member (7) is sleeved on the first sliding rod (6), and the first elastic member (7) is used to provide a force for the first sliding rod (6) to move away from the first electromagnet (4).

3. A door closer according to claim 2, characterized in that: The moving block (5) has a snap-in groove (8) and further comprises: A first swinging member (9) is swingably disposed on the chassis (1) and is located in the installation cavity (2), wherein the first swinging member (9) has a clamping end (34) and an action end (35) located on both sides of a rotation point: A clamping wheel (10) is arranged on the clamping end (34), and after the first swinging member (9) swings, the clamping wheel (10) slides into or out of the clamping groove (8); A second elastic member (11), one end of which is arranged on the chassis (1) and the other end of which is arranged on the first swing member (9), and is used to provide a force for the clamping wheel (10) to slide into the clamping groove (8); An abutment member (12) abutting against the action end (35); A second sliding rod (13) is arranged on the abutment member (12); A second electromagnet (14) is arranged on the chassis (1) and is located in the installation cavity (2); when the second electromagnet (14) is energized, it drives the second sliding rod (13) to slide in the installation cavity (2); A third elastic member (15) has one end disposed on the abutment member (12) and the other end disposed on the chassis (1), and the third elastic member (15) is sleeved on the second sliding rod (13), and the third elastic member (15) is used to provide a force for the second sliding rod (13) to move away from the second electromagnet (14).

4. A door closer according to claim 3, characterized in that: Also includes: A manual drive component (16) is arranged on the chassis (1), and the manual drive component (16) is used to drive the second sliding rod (13) to slide.

5. A door closer according to claim 4, characterized in that: The manual drive assembly (16) comprises: A second swinging member (17) is swingably disposed on the chassis (1), and the second swinging member (17) and the abutting member (12) are abutted against each other, and after the second swinging member (17) swings, it drives the abutting member (12) and the second sliding rod (13) to slide in the installation cavity (2); A fourth elastic member (18) has one end disposed on the chassis (1) and the other end disposed on the second swing member (17), and is used to provide a force for moving the second swing member (17) away from the abutment member (12).

6. A door closer according to claim 5, characterized in that: The manual drive assembly (16) further comprises: A pulling rope (19) has one end arranged on the second swinging member (17), and the other end of the pulling rope (19) is a pulling portion (20). When the pulling portion (20) is pulled, the pulling rope (19) drives the second swinging member (17) to swing.

7. A door closer according to claim 6, characterized in that: Also includes: The temperature release component (21) is used to be arranged on an indoor suspended ceiling, and the temperature release component (21) is connected to the pulling rope (19), and the temperature release component (21) is used to pull the pulling rope (19).

8. A door closer according to claim 7, characterized in that: The temperature release component (21) comprises: A mounting frame (22) is arranged on an outer wall of the chassis (1), and the mounting frame (22) has a sliding cavity; A third sliding rod (23) is slidably disposed in the sliding cavity, and the third sliding rod (23) has a connecting end (24), and the connecting end (24) is connected to the pulling rope (19); a fifth elastic member (25), one end of which is arranged on the mounting frame (22) and the other end of which is arranged on the third sliding rod (23); A tensioning rope (26), one end of which is arranged on the third sliding rod (23); The fuse (27) is used to be arranged on the indoor ceiling, and the other end of the tension rope (26) is arranged on the fuse (27). After the fuse (27) is blown, the tension rope (26) is released, and the fifth elastic member (25) is used to provide a force for the third sliding rod (23) to move away from the fuse (27).

9. A door closer according to claim 8, characterized in that: The fuse (27) comprises: A mounting base (28) for being mounted on an indoor ceiling; a sixth elastic member (29), one end of which is arranged on the mounting seat (28); A fuse (30), the other end of the sixth elastic member (29) being arranged on one end of the fuse (30), and the other end of the fuse (30) being connected to the tension rope (26).

10. The door closer according to claim 8, characterized in that: The connecting end (24) has a through hole (31), and the pulling rope (19) is used to pass through the through hole (31), and further comprises: A buckle (32) is provided on the pulling rope (19), and the buckle (32) is used to abut against the connecting end (24). After the third sliding rod (23) slides, the connecting end (24) drives the pulling rope (19) to move through the buckle (32).

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