A type of roller shutter door bottom beam

Abstract

This utility model relates to the field of roller shutter door technology and discloses a roller shutter door bottom beam, applied to roller shutter door curtains. The bottom of the roller shutter door curtain is provided with a bottom beam body, and the surface of the roller shutter door curtain is provided with a limiting mechanism. The bottom beam body includes a main beam body, which is engaged with the inner side of the bottom of the roller shutter door curtain. This new solution changes the one-piece molded bottom beam design to be detachable, which facilitates partial replacement and disassembly. At the same time, the overall length of the bottom beam can be adjusted by replacing the secondary beam bodies of different lengths, which is convenient for adapting to roller shutter door curtains of different widths. The cooperation between the guide block and the guide groove facilitates the quick and accurate placement of the buffer sleeve on the outside of the main beam body and a set of secondary beam bodies, realizing the rapid positioning of the buffer sleeve. The limiting mechanism can quickly and effectively limit the main beam body and the buffer sleeve simultaneously, improving the disassembly and assembly efficiency. The buffer sleeve can reduce the impact force of the bottom beam while improving the sealing between it and the ground.

Description

Technical Field

[0001] This utility model belongs to the field of roller shutter door technology, specifically a roller shutter door bottom beam. Background Technology

[0002] A roller shutter door is a door consisting of multiple articulated door panels linked together, rotating up and down around a central axis within fixed tracks. The bottom beam of the roller shutter door is a horizontal frame installed at the bottom of the door and plays a crucial role in the roller shutter door system.

[0003] Most existing roller shutter doors first process the bottom beam and the door curtain separately, and then assemble them. The bottom beam is generally made of high-strength materials such as stainless steel and is fixed to the bottom of the door curtain by bolts, welding or riveting. However, when the door curtain is lowered, the bottom beam will generate a large impact. Part of the impact force is transmitted to the bolts, which can easily cause the bolts to wear and deform, making subsequent disassembly and assembly more difficult. To address this, we propose a roller shutter door bottom beam. Utility Model Content

[0004] In response to the above situation and to overcome the shortcomings of the existing technology, this utility model provides a bottom beam for a roller shutter door, which effectively solves the problem that most existing roller shutter doors first process the bottom beam and the door curtain separately and then assemble them. The bottom beam is generally made of high-strength materials such as stainless steel and is fixed to the bottom of the door curtain by bolts, welding or riveting. However, when the door curtain is lowered, the bottom beam will generate a large impact, and part of the impact force is transmitted to the bolts, which can easily cause the bolts to wear and deform, making subsequent disassembly and assembly more difficult.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bottom beam for a roller shutter door, applied to a roller shutter door curtain. The bottom of the roller shutter door curtain has a bottom beam body, and the surface of the roller shutter door curtain has a limiting mechanism. The bottom beam body includes a main beam body, which is engaged with the inner side of the bottom of the roller shutter door curtain. Several sets of guide blocks are symmetrically fixed on the surface of the main beam body. A set of slots is symmetrically opened on the inner side of both ends of the main beam body. A locking block is matched and engaged inside the slot. A secondary beam body is fixed to the end of the locking block away from the main beam body. The main beam body and the locking block are connected by a set of bolts. A buffer sleeve is attached to the outer side of the main beam body and the set of secondary beam bodies. Several sets of guide grooves are symmetrically opened on the surface of the buffer sleeve.

[0006] Preferably, the main beam has a convex cross-section, and the secondary beam has a locking structure formed by a locking block and a locking groove. The locking block has a rectangular cross-section with a rounded transition at the apex.

[0007] Preferably, the main beam body is detachable by bolts and clamps, and the top surface of the bolt head is flush with the surface of the main beam body.

[0008] Preferably, the number of guide blocks and guide grooves is the same, and the guide blocks can be matched and engaged inside the guide grooves.

[0009] Preferably, the limiting mechanism includes a cylindrical frame, a set of cylindrical frames symmetrically fixed to the surface of the roller shutter door curtain, a limiting rod passing through the interior of the set of cylindrical frames, a set of limiting ring plates symmetrically fixedly sleeved on the surface of the limiting rod, and a spring provided on one side of the limiting ring plate.

[0010] Preferably, the limiting rod is U-shaped, and both the main beam and the buffer sleeve have limiting grooves that match the end of the limiting rod. The end of the limiting rod passes through the back of the roller shutter door curtain and engages with the main beam and the buffer sleeve.

[0011] Preferably, the limiting rod is formed into an elastic structure by a limiting ring plate, a spring, and a cylindrical frame, and the outer wall of the limiting ring plate is in contact with the inner wall of the cylindrical frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. By redesigning the one-piece molded bottom beam as detachable, it facilitates partial replacement and disassembly. The overall length of the bottom beam can be adjusted by replacing sub-beams of different lengths, making it suitable for roller shutter curtains of varying widths. The cooperation between the guide block and guide groove allows for quick and accurate placement of the buffer sleeve on the outside of the main beam and a set of sub-beams, achieving rapid positioning of the buffer sleeve. A limiting mechanism can quickly and effectively limit the main beam and buffer sleeve simultaneously, improving assembly and disassembly efficiency. The buffer sleeve reduces the impact force on the bottom beam while improving the seal between the bottom beam and the ground.

[0014] 2. By pulling the limiting rod outward, the end of the limiting rod is effectively disengaged from the main beam and the buffer sleeve. At this time, there are no restrictive objects between the main beam, the buffer sleeve and the roller shutter curtain, and they can be directly separated from the roller shutter curtain. During installation, based on pulling the limiting rod outward, the top of the main beam and the buffer sleeve are inserted into the roller shutter curtain. Then, the limiting rod is released. Due to the spring rebound force, the end of the limiting rod quickly pops out and effectively engages with the main beam and the buffer sleeve, realizing the rapid limiting and fixing of the main beam and the buffer sleeve. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2This is a partial vertical cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure from another perspective of the present invention;

[0021] Figure 5 This is a partial transverse cross-sectional structural diagram of the present invention.

[0022] In the diagram: 1. Roller shutter curtain; 2. Bottom beam body; 201. Main beam body; 202. Guide block; 203. Slot; 204. Block; 205. Secondary beam body; 206. Bolt; 207. Buffer sleeve; 208. Guide groove; 3. Limiting mechanism; 301. Cylindrical frame; 302. Limiting rod; 303. Limiting ring plate; 304. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5A bottom beam for a roller shutter door, applied to a roller shutter door curtain 1. The bottom of the roller shutter door curtain 1 has a bottom beam body 2, and the surface of the roller shutter door curtain 1 has a limiting mechanism 3. The bottom beam body 2 includes a main beam 201, which is engaged with the inner bottom of the roller shutter door curtain 1. Several sets of guide blocks 202 are symmetrically fixed to the front and back of the surface of the main beam 201. A set of slots 203 are symmetrically opened on the inner sides of both ends of the main beam 201. A locking block 204 is matched and engaged inside the slot 203. The locking block 204 is located at... A secondary beam 205 is fixedly connected to one end of the main beam 201. The main beam 201 has a convex cross-section, and the secondary beam 205 forms a locking structure with a locking block 204 and a locking groove 203. The locking block 204 has a rectangular cross-section with a rounded apex. The main beam 201 and the locking block 204 are connected by a set of bolts 206. Furthermore, the main beam 201 and the locking block 204 form a detachable structure through the bolts 206, and the top surface of the bolt head is flush with the surface of the main beam 201. The main beam 201 and a set of secondary beams 205 are fitted with buffer sleeves 207 on their outer sides. Several sets of guide grooves 208 are symmetrically opened on the surface of the buffer sleeves 207. Furthermore, the number of guide blocks 202 is the same as the number of guide grooves 208. The guide blocks 202 can be matched and engaged inside the guide grooves 208. By changing the design of the one-piece molded bottom beam to be detachable, it is convenient to replace and disassemble in parts. At the same time, the overall length of the bottom beam can be adjusted by replacing the secondary beams 205 of different lengths, which is convenient to adapt to roller shutter curtains 1 of different widths. The cooperation between the guide blocks 202 and the guide grooves 208 facilitates the quick and accurate placement of the buffer sleeves 207 on the outer sides of the main beam 201 and a set of secondary beams 205, realizing the rapid positioning of the buffer sleeves 207. The limiting mechanism 3 can quickly and effectively limit the main beam 201 and the buffer sleeves 207 simultaneously, improving the efficiency of disassembly and assembly. The buffer sleeves 207 can reduce the impact force of the bottom beam and improve the sealing between it and the ground.

[0025] The limiting mechanism 3 includes a cylindrical frame 301. A set of cylindrical frames 301 are symmetrically fixed to the surface of the roller shutter curtain 1. A limiting rod 302 passes through the inside of the set of cylindrical frames 301. The limiting rod 302 is U-shaped. The main beam 201 and the buffer sleeve 207 are both provided with limiting grooves that match the end of the limiting rod 302. The end of the limiting rod 302 passes through the rear side of the roller shutter curtain 1 and is engaged inside the main beam 201 and the buffer sleeve 207. A set of limiting ring plates 303 are symmetrically fixedly sleeved on the surface of the limiting rod 302. A spring 304 is provided on one side of the limiting ring plate 303. Furthermore, the limiting rod 302 forms an elastic structure with the cylindrical frame 301 through the limiting ring plate 303, the spring 304, and the limiting ring plate 304. 3. The outer wall is in contact with the inner wall of the tube frame 301. By pulling the limiting rod 302 outward, the end of the limiting rod 302 is effectively disengaged from the main beam 201 and the buffer sleeve 207. At this time, there are no restrictions between the main beam 201, the buffer sleeve 207 and the roller shutter curtain 1, and they can be directly separated from the roller shutter curtain 1. During installation, based on pulling the limiting rod 302 outward, the top of the main beam 201 and the buffer sleeve 207 are inserted into the roller shutter curtain 1. Then, the limiting rod 302 is released. Under the influence of the spring 304, the end of the limiting rod 302 quickly pops out and effectively engages with the main beam 201 and the buffer sleeve 207, realizing the rapid limiting and fixing of the main beam 201 and the buffer sleeve 207.

Claims

1. A roller shutter door bottom beam, characterized in that: This invention is applied to a roller shutter door curtain (1). The bottom of the roller shutter door curtain (1) is provided with a bottom beam body (2). The surface of the roller shutter door curtain (1) is provided with a limiting mechanism (3). The bottom beam body (2) includes a main beam body (201). The main beam body (201) is engaged with the inner bottom of the roller shutter door curtain (1). Several sets of guide blocks (202) are symmetrically fixed on the front and back of the surface of the main beam body (201). A set of slots (203) are symmetrically opened on the inner sides of both ends of the main beam body (201). The slot (203) is fitted with a locking block (204). The end of the locking block (204) away from the main beam (201) is fixed to a secondary beam (205). The main beam (201) and the locking block (204) are connected by a set of bolts (206). The main beam (201) and a set of secondary beams (205) are fitted with a buffer sleeve (207) on their outer sides. The buffer sleeve (207) has several sets of guide grooves (208) symmetrically opened on its surface.

2. A roller shutter door bottom beam according to claim 1, characterised in that: The main beam (201) has a convex cross-section, and the secondary beam (205) forms a locking structure with the slot (203) through the locking block (204). The locking block (204) has a rectangular cross-section with a rounded transition at the apex.

3. A bottom rail for a roller shutter door according to claim 1, wherein: The main beam (201) is detachable by bolts (206) and clamps (204), and the top surface of the bolt (206) head is flush with the surface of the main beam (201).

4. The roller shutter door bottom beam according to claim 1, characterized in that: The number of guide blocks (202) and guide grooves (208) is the same, and the guide blocks (202) can be matched and engaged inside the guide grooves (208).

5. A bottom rail for a roller shutter door according to claim 1, wherein: The limiting mechanism (3) includes a tube frame (301), a set of tube frames (301) are symmetrically fixed on the surface of the roller shutter door curtain (1), a limiting rod (302) passes through the inside of the set of tube frames (301), a set of limiting ring plates (303) are symmetrically fixed on the surface of the limiting rod (302), and a spring (304) is provided on one side of the limiting ring plate (303).

6. A roller shutter door bottom beam according to claim 5, characterised in that: The limiting rod (302) is U-shaped. The main beam (201) and the buffer sleeve (207) are both provided with limiting grooves that match the end of the limiting rod (302). The end of the limiting rod (302) passes through the back of the roller shutter door curtain (1) and is engaged inside the main beam (201) and the buffer sleeve (207).

7. A bottom rail for a roller shutter door according to claim 5 wherein: The limiting rod (302) forms an elastic structure with the cylinder frame (301) through the limiting ring plate (303), the spring (304), and the outer wall of the limiting ring plate (303) is in contact with the inner wall of the cylinder frame (301).

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