Fireproof rolling shutter door with upper limit and lower limit
By introducing movable rods and limit switches into the fireproof rolling shutter door, combined with brush dust removal and shaft pull rope linkage, the problem of inaccurate opening caused by the reliance on manual judgment in traditional fireproof rolling shutter doors is solved, improving safety and cleanliness, and reducing opening and closing obstacles.
Patent Information
- Application Number
- CN202423158528.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Traditional fire-resistant roller shutters rely on manual visual judgment, which means that the shutter cannot accurately reach the fully open or closed position, affecting the fire resistance and safety of use.
The design incorporates movable rods and limit switches. The movable rods contact the limit switches when the curtain is fully open or closed. Combined with the brush dust removal component and the rotating shaft pull rope linkage structure, this ensures that the curtain accurately reaches the fully open or closed position and keeps the curtain clean through the dust removal component.
It enables precise control of the opening and closing degree of the door curtain, improves the safety of fireproof roller shutter doors and the cleanliness of the door curtain, and reduces the possibility of the bottom of the door curtain piling up and affecting opening and closing.
Smart Images
Figure CN223577813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of roller shutter door, concretely is a kind of up and down limit fireproof roller shutter door. BACKGROUND
[0002] In modern architecture, fireproof roller shutter door as important fireproof, heat insulation facilities, is widely installed in the large hole of building, is used to prevent fire spread and ensure the safety of life and property. The traditional fireproof roller shutter door usually includes a reel, the reel is connected with door curtain, the path of door curtain moving is controlled by guide rail, and the reel is driven to rotate by motor, to drive door curtain to move up and down to realize opening and closing operation.
[0003] The current fireproof roller shutter door mainly relies on the visual judgment of operator to determine the opening and closing degree of door curtain. This kind of manual judgment mode can not make door curtain accurately reach the completely opened or closed position, and further affect its fireproof effect and use safety. In view of the above problems, the utility model provides a kind of up and down limit fireproof roller shutter door. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of up and down limit fireproof roller shutter door, to solve the problems presented in the above background.
[0005] The utility model is realized by the following technical solutions:
[0006] A kind of up and down limit fireproof roller shutter door, including slide rail, curtain cover, reel, motor and door curtain, the slide rail is fixedly arranged at the bottom of the curtain cover, the reel is rotatably arranged in the curtain cover and is driven by the motor, the bottom of the curtain cover is provided with import and export, the upper end of the door curtain is fixed on the reel, the lower end of the door curtain is slidably connected with the slide rail after extending from the import and export, up and down limit fireproof roller shutter door further includes movable rod and two limit switches, the movable rod is elastically arranged in the top of the curtain cover and abuts against the door curtain, the two limit switches are arranged along the radial direction of the reel, the movable rod is respectively contacted with the two limit switches when the door curtain is completely opened or completely closed.
[0007] Optionally, both ends of the movable rod are connected with the curtain cover by elastic structure, and the elastic structure includes guide rod and spring, the movable rod is provided with insertion hole for the guide rod to pass through, the top end of the guide rod is fixed in the top of the curtain cover, and the bottom end of the guide rod is fixedly provided with shaft pedestal.
[0008] Optionally, one side of the movable rod abutting against the door curtain is provided with brush.
[0009] Optionally, the movable rod is a hollow member, and a side of the movable rod facing the door curtain is provided with an air inlet hole, and the upper and lower limit fireproof curtain door further comprises a dust removal assembly, the dust removal assembly comprising an air pump, an air inlet pipe, an air outlet pipe and a water tank, the air inlet end of the air pump being connected with the movable rod through the air inlet pipe, and the air outlet end of the air pump being connected with the water tank through the air outlet pipe.
[0010] Optionally, a mounting plate is fixedly arranged in the curtain cover at the right end of the movable rod, and the two limit switches are fixedly mounted on the mounting plate, and a touch piece is fixedly arranged at the right end of the movable rod, and the touch piece is in contact with the two limit switches when the door curtain is fully opened or fully closed.
[0011] Optionally, a rotating shaft is rotatably arranged at the bottom of the sliding rail, and the lower end of the door curtain is connected with the rotating shaft through a pull rope on each side, and a linkage shaft is rotatably arranged at the right side of the sliding rail, and the top end of the linkage shaft and the reel are connected through a bevel gear transmission, and the bottom end of the linkage shaft and the rotating shaft are also connected through a bevel gear transmission.
[0012] Compared with the prior art, the upper and lower limit fireproof curtain door has the following beneficial effects:
[0013] 1. The movable rod and the two limit switches are arranged, the movable rod is in contact with the two limit switches when the door curtain is fully opened or fully closed, the opening and closing degree of the door curtain can be controlled, the door curtain can accurately reach the fully closed or fully opened position, and the use safety of the fireproof curtain door is improved.
[0014] 2. The brush is arranged on the side of the movable rod abutting against the door curtain, the brush on the movable rod can effectively clean the dust on the surface of the door curtain during the folding and unfolding of the door curtain, and the cleanliness of the door curtain is maintained.
[0015] 3. The rotating shaft, the pull rope and the linkage shaft are arranged, when the motor drives the door curtain to be lowered, the rotating shaft is synchronously driven to rotate by the linkage shaft, and the rotating shaft applies a downward pulling force to the lower end of the door curtain through the pull rope, so that the possibility that the door curtain is accumulated in the curtain cover due to the failure of the lower end of the door curtain to smoothly slide downward and affects the normal opening and closing of the roller shutter door is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a front view of the structure of the utility model;
[0017] Figure 2 It is a front view of the structure of the utility model; Figure 1 It is a front view of the structure of the utility model;
[0018] Figure 3The utility model discloses a movable rod piece and dust removal assembly's connection structure schematic view.
[0019] Figure 4 The utility model discloses a Figure 2 The utility model discloses a movable rod piece and dust removal assembly's connection structure schematic view.
[0020] In the drawing: 1, slide rail;2, curtain cover;3, reel;4, motor;5, door curtain;6, import and export;7, movable rod piece;8, limit switch;9, brush hair;10, air pump;11, air inlet pipe;12, exhaust pipe;13, water tank;14, mounting plate;15, touch piece;16, rotating shaft;17, pull rope;18, linkage shaft;19, sliding groove;20, guide rod;21, jack;22, spring;23, axle base. Specific implementation
[0021] The technical scheme in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.
[0022] Embodiment: please refer to Figures 1 to 4 According to the embodiment of the utility model provides a kind of upper and lower limit fireproof roller shutter door, including slide rail 1, curtain cover 2, reel 3, motor 4 and door curtain 5, slide rail 1 is fixedly arranged at the bottom of curtain cover 2, reel 3 is rotationally arranged in curtain cover 2 and is driven by motor 4, motor 4 is connected with external power supply, the forward and reverse rotation of motor 4 is realized by control switch, the bottom of curtain cover 2 is provided with import and export 6, the upper end of door curtain 5 is fixed on reel 3, the lower end of door curtain 5 is connected with slide rail 1 after extending from import and export 6, and upper and lower limit fireproof roller shutter door further includes movable rod piece 7 and two limit switches 8, movable rod piece 7 is elastically arranged in the top of curtain cover 2 and door curtain 5 abuts, two limit switches 8 are arranged along the radial direction of reel 3, movable rod piece 7 respectively contacts two limit switches 8 when door curtain 5 is completely opened or completely closed.
[0023] The upper and lower limit position fireproof rolling shutter door with the above structure realizes the rolling up and down of the door curtain 5 through the forward and reverse rotation of the motor 4. During the rolling up and down of the door curtain 5, the thickness of the door curtain 5 on the winding shaft 3 changes (i.e., when the door curtain 5 is rolled up, the thickness of the door curtain 5 on the winding shaft 3 gradually increases, and when the door curtain 5 is rolled down, the thickness of the door curtain 5 on the winding shaft 3 gradually decreases). The movable rod member 7 moves between the two limit switches 8 along with the change of the thickness of the door curtain 5 on the winding shaft 3. When the movable rod member 7 contacts one of the limit switches 8, the door curtain 5 is exactly fully opened, and when the movable rod member 7 contacts the other limit switch 8, the door curtain 5 is exactly fully closed. In this way, the opening and closing degree of the door curtain 5 can be controlled, the door curtain 5 can be accurately positioned at the fully closed or fully opened position, and the use safety of the fireproof rolling shutter door is improved.
[0024] In the example embodiment, both ends of the movable rod member 7 are connected with the curtain cover 2 through elastic structures, the elastic structures include a guide rod 20 and a spring 22, the movable rod member 7 is provided with a insertion hole 21 through which the guide rod 20 is movably arranged, the top end of the guide rod 20 is fixed in the top of the curtain cover 2, the bottom end of the guide rod 20 is fixedly provided with a shaft table 23, the shaft table 23 can prevent the movable rod member 7 from moving out of the bottom end of the guide rod 20. After the above arrangement, the movable rod member 7 can move along the radial direction of the winding shaft 3 through the guide rod 20, and the spring 22 can provide the movable rod member 7 with a spring force facing the direction of the winding shaft 3, so that the movable rod member 7 can always abut against the door curtain 5. Of course, the guide rod 20 is not necessary, and only the spring 22 can be arranged between the movable rod member 7 and the top of the curtain cover 2.
[0025] In the example embodiment, the side of the movable rod member 7 abutting against the door curtain 5 is provided with the brush 9. During the rolling up and down of the door curtain 5, the brush 9 on the movable rod member 7 can effectively clean the dust on the surface of the door curtain 5, and keep the door curtain 5 clean and tidy.
[0026] In the example embodiment, the movable rod member 7 is a hollow member, and the side of the movable rod member 7 facing the door curtain 5 is provided with an air inlet hole (not shown). The upper and lower limit position fireproof rolling shutter door further includes a dust removal assembly, the dust removal assembly includes an air pump 10, an air inlet pipe 11, an air outlet pipe 12 and a water tank 13, the air inlet end of the air pump 10 is connected with the movable rod member 7 through the air inlet pipe 11, and the air outlet end of the air pump 10 is connected with the water tank 13 through the air outlet pipe 12. In this way, when the brush 9 cleans the dust on the surface of the door curtain 5, the air pump 10 can be started, the dust cleaned by the brush 9 will pass through the air inlet hole, the inside of the movable rod member 7, the air inlet pipe 11, the inside of the air pump 10 and the air outlet pipe 12 in sequence under the action of the airflow, and finally reach the water tank 13. The dust is precipitated in the water, and the clean air is discharged from the water in the form of air bubbles, so that the dust removal purpose is achieved.
[0027] In the example embodiment, the mounting plate 14 is fixedly arranged in the curtain housing 2 at the right end of the movable rod 7, the two limit switches 8 are fixedly arranged on the mounting plate 14, the contact piece 15 is fixedly arranged at the right end of the movable rod 7, and the contact piece 15 is in contact with the two limit switches 8 when the door curtain 5 is fully opened or fully closed. The contact piece 15 moves synchronously with the movable rod 7 and serves as a component directly in contact with the limit switch 8.
[0028] Since the door curtain 5 has a large volume and is prone to deformation during use, the smoothness of the sliding fit between the deformed door curtain 5 and the sliding rail 1 is reduced. At this time, if the motor 4 is only reversed to drive the door curtain 5 downward, the lower end of the door curtain 5 may not be able to smoothly slide downward and accumulate in the curtain housing 2, affecting the normal opening and closing of the roller shutter door. In order to solve this problem, in the example embodiment, the sliding rail 1 is provided with a U-shaped sliding groove 19 on the inner side, a rotating shaft 16 is rotatably arranged on the sliding rail 1 at the bottom of the sliding groove 19, and the two sides of the lower end of the door curtain 5 are connected to the rotating shaft 16 through a pull rope 17, the pull rope 17 is located in the sliding groove 19, and the right side of the sliding rail 1 is rotatably provided with a linkage shaft 18. The top end of the linkage shaft 18 and the winding shaft 3 are connected through a bevel gear transmission, and the bottom end of the linkage shaft 18 and the rotating shaft 16 are also connected through a bevel gear transmission. In this way, when the motor 4 drives the door curtain 5 to be lowered, the winding shaft 3 will synchronously drive the rotating shaft 16 to rotate through the linkage shaft 18, and the rotating shaft 16 will apply a downward pulling force to the lower end of the door curtain 5 through the pull rope 17. Thus, the possibility that the lower end of the door curtain 5 cannot smoothly slide downward and accumulates in the curtain housing 2, affecting the normal opening and closing of the roller shutter door, can be reduced.
[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A fireproof roller shutter door with upper and lower limit, comprising a slide rail (1), a curtain cover (2), a roller shaft (3), a motor (4), and a door curtain (5), wherein the slide rail (1) is fixedly disposed at the bottom of the curtain cover (2), the roller shaft (3) is rotatably disposed inside the curtain cover (2) and driven by the motor (4), the bottom of the curtain cover (2) is provided with an inlet and outlet (6), the upper end of the door curtain (5) is fixed on the roller shaft (3), and the lower end of the door curtain (5) extends from the inlet and outlet (6) and is slidably connected to the slide rail (1), characterized in that, It also includes a movable rod (7) and two limit switches (8). The movable rod (7) is elastically disposed at the top inside the curtain (2) and abuts against the curtain (5). The two limit switches (8) are arranged radially along the roller (3). The movable rod (7) contacts the two limit switches (8) respectively when the curtain (5) is fully open or fully closed.
2. The upper and lower limit fireproof roller shutter door according to claim 1, characterized in that: Both ends of the movable rod (7) are connected to the curtain (2) through an elastic structure. The elastic structure includes a guide rod (20) and a spring (22). The movable rod (7) is provided with an insertion hole (21) through which the guide rod (20) moves. The top end of the guide rod (20) is fixed inside the top of the curtain (2), and the bottom end of the guide rod (20) is fixedly provided with a shaft platform (23).
3. The upper and lower limit fireproof roller shutter door according to claim 1, characterized in that: The movable rod (7) is provided with bristles (9) on the side that abuts against the curtain (5).
4. The upper and lower limit fireproof roller shutter door according to claim 3, characterized in that: The movable rod (7) is a hollow component, and the movable rod (7) has an air inlet on the side facing the curtain (5). The upper and lower limit fireproof roller shutter door also includes a dust removal component, which includes an air pump (10), an air inlet pipe (11), an exhaust pipe (12), and a water tank (13). The air inlet end of the air pump (10) is connected to the movable rod (7) through the air inlet pipe (11), and the exhaust end of the air pump (10) is connected to the water tank (13) through the exhaust pipe (12).
5. The fireproof rolling shutter door with upper and lower limit switches according to claim 1, characterized in that: An installation plate (14) is fixedly installed inside the curtain (2) located at the right end of the movable rod (7). The two limit switches (8) are fixedly installed on the installation plate (14). A contact element (15) is fixedly installed at the right end of the movable rod (7). The contact element (15) contacts the two limit switches (8) respectively when the curtain (5) is fully opened or fully closed.
6. The upper and lower limit fireproof roller shutter door according to any one of claims 1 to 5, characterized in that: The bottom of the slide rail (1) is rotatably provided with a rotating shaft (16). The two sides of the lower end of the curtain (5) are connected to the rotating shaft (16) by a pull rope (17). The right side of the slide rail (1) is rotatably provided with a linkage shaft (18). The top end of the linkage shaft (18) is connected to the roller (3), and the bottom end of the linkage shaft (18) is connected to the rotating shaft (16) by bevel gear transmission.