Single-hook small bottom beam for fireproof rolling shutter door
The fireproof roller shutter door bottom beam with a single-layer hook design solves the problems of high production difficulty and high cost of double-layer hook bottom beams, achieving low cost, convenient installation and high sealing performance.
Patent Information
- Application Number
- CN202422307859.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The existing one-piece molded double-layer hook bottom beam in fireproof rolling shutters has problems such as high production difficulty, high material cost, and inconvenient installation.
The single-layer hook design uses hooks made of 1.55mm thick galvanized sheet, which are integrally formed with the main body of the bottom beam. The structure is simple, reduces the number of times the sheet metal is bent, and reduces production difficulty and cost.
It reduces production costs, simplifies the installation process, reduces hook thickness, and improves installation convenience and sealing performance.
Smart Images
Figure CN223459314U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to fireproof rolling shutter door technical field especially relates to single hook small bottom beam for fireproof rolling shutter door. BACKGROUND
[0002] In prior art, the small bottom beam at the bottom of the door curtain of the fireproof rolling shutter door is an important component for maintaining the strength of the door curtain, and without the bottom beam under the door curtain is equivalent to having one less frame under the lower part of the door curtain for firmness, and the negative pressure of the fire scene can easily overturn the entire door curtain. The small bottom beam at the bottom of the conventional fireproof rolling shutter door is generally divided into two parts, namely, a hook and a bottom beam body, and the structure thereof is also generally divided into two types: one is a bottom beam integrally formed with the hook and the bottom beam body, which has a higher cost but is easier to install (as shown in Figure 1 、 Figure 2 ); the other is not integrally formed, which has a lower cost but needs to weld the hook and the bottom beam body, and is not easy to install, or as the utility model patent with the patent number 2020203476063 and the patent name "a bottom beam of fireproof rolling shutter" which does not need welding but still needs some assembly steps before installation. In summary, the integrally formed small bottom beam of the fireproof rolling shutter has the advantage of easy installation, but has a higher cost, and it is urgent to reduce the cost in the existing market.
[0003] For details Figure 1 、 Figure 2 , the existing market integrally formed bottom beam of the fireproof rolling shutter should be considered from the stable structure of the bottom beam, and the hook thereof is generally a double-layer hook (i.e. two layers of plates are bent together), which makes the stability of the bottom beam not a problem, but still has the following disadvantages: first, the arc-shaped bending of the two layers of plates together at the hook increases the production difficulty (the bending of the two layers of plates increases the bending strength and the number of bending compared with the bending of a single layer of plate); second, the hooking strength of a single-layer hook is sufficient to support the weight of the entire bottom beam and its counterweight device (the bottom beam generally has a counterweight device, which can make the door curtain descend by gravity in the case of fuse failure, and more conveniently and quickly make the fireproof rolling shutter door descend); third, the thickness of the double-layer hook is higher, which increases the hooking difficulty to a certain extent. Therefore, it is the purpose of the utility model to provide a single-hook small bottom beam for fireproof rolling shutter door which has a simple structure, is easy to produce and has a lower production cost. SUMMARY
[0004] In view of the deficiencies in the prior art, the utility model provides a single-hook small bottom beam for fireproof rolling shutter door.
[0005] The technical scheme of the utility model is as follows: a single-hook small bottom beam for fireproof rolling shutter door, comprising a hook and a bottom beam body, the hook and the bottom beam body are integrally formed, and the hook is a single-layer hook.
[0006] The bottom beam body is rectangular, the bottom thereof is a bottom wall, the two sides thereof are side walls, and the top thereof is composed of a first top wall, a second top wall and a hook; the first top wall and the second top wall are arranged in parallel on the same horizontal line;
[0007] The hook and the bottom beam body are made of 1.55 mm thick galvanized plate and are bent.
[0008] Further, one end of the first top wall is bently connected with the side wall, and the other end is bently connected with the bottom of the hook.
[0009] Further, one end of the second top wall is bently connected with the side wall, and the other end is provided with a bent portion which is bent downwardly to the hook.
[0010] Further, a groove is arranged on the bottom wall, the groove is recessed to the inside of the bottom beam body, and the bending angle of the side surface of the groove relative to the bottom wall is 40-45 degrees.
[0011] Further, the bending angle of the top of the bent portion relative to the second top wall is 40-45 degrees, and the bottom thereof is parallel to the first top wall.
[0012] Further, the bending angle of the bent portion relative to the second top wall is the same as the bending angle of the side surface of the groove relative to the bottom wall.
[0013] Further, the bottom end of the hook is integrally formed with the edge of the first top wall in a 90-degree connection, and the top end is in an arc-shaped bent shape; the center point of the arc-shaped bending of the top of the hook intersects with the center line of the bottom wall.
[0014] The present application has the following beneficial effects:
[0015] 1. The single-hook small bottom beam for the fireproof roller shutter provided by the present application has the advantages of reduced material cost, reduced bending frequency of the plate material in the production process, reduced production difficulty, and further reduced production cost, as compared with the conventional double-hook bottom beam.
[0016] 2. The single-hook small bottom beam for the fireproof roller shutter provided by the present application has the advantages of smaller size and weight, and is more convenient for people to install; and the thickness of the hook is reduced, and the hook is more convenient to hang. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a perspective view of the single-hook small bottom beam for the fireproof roller shutter in the prior art;
[0018] Figure 2 is Figure 1 a sectional structure schematic view of section A-A;
[0019] Figure 3The utility model provides a single hook small bottom beam's three -dimensional structure schematic diagram for fireproof rolling slats door;
[0020] Figure 4 For Figure 3 Cross section structure schematic diagram of B-B section;
[0021] Figure 5 For Figure 3 Cross section structure schematic diagram of B-B section.
[0022] Fig. 1, hook 2, bottom beam main body 201, bottom wall 202, side wall 203, first top wall 204, second top wall 205, bending part 206, recess. DETAILED DESCRIPTION
[0023] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the application, its application, or uses, to the specific embodiments described. The application can be implemented in numerous ways, including, but not limited to, the embodiments described herein. These embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. It should be noted that the relative arrangement of components and steps, the numerical expressions, and numerical values set forth in these embodiments are presented only as examples and are not intended to be limiting unless otherwise specifically stated.
[0024] The terms "first", "second", and similar terms used in the present application do not denote any order, number, or importance, but are used only to distinguish different parts. The terms "include" or "contain" and similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] As Figures 1-5 The single hook small bottom beam for fireproof rolling slats door includes a hook 1 and a bottom beam main body 2, the hook 1 and the bottom beam main body 2 are integrally formed, the hook 1 is a single-layer hook 1; the bottom beam main body 2 is rectangular, the bottom of the bottom beam main body 2 is a bottom wall 201, the two sides of the bottom beam main body 2 are side walls 202, and the top of the bottom beam main body 2 is composed of a first top wall 203, a second top wall 204 and the hook 1; the first top wall 203 and the second top wall 204 are arranged in parallel on the same horizontal line; the hook 1 and the bottom beam main body 2 are made of 1.55mm thick galvanized sheet.
[0026] Specifically, one end of the first top wall 203 is bently connected with the side wall 202, and the other end is bently connected with the bottom of the hook 1.
[0027] Specifically, one end of the second top wall 204 is connected to the side wall 202 by bending, and the other end is provided with a bending portion 205 which bends downward from the hook 1.
[0028] Specifically, the bottom wall 201 is provided with a groove 206 which is recessed towards the inside of the bottom beam body 2, and the bending angle of the side surface of the groove 206 relative to the bottom wall 201 is 40 degrees.
[0029] Specifically, the bending angle of the top of the bending portion 205 relative to the second top wall 204 is 40 degrees, and the bottom thereof is parallel to the first top wall 203.
[0030] Specifically, the bending angle of the bending portion 205 relative to the second top wall 204 is the same as the bending angle of the side surface of the groove 206 relative to the bottom wall 201.
[0031] Specifically, the bottom end of the hook 1 is integrally formed with the edge of the first top wall 203 at a 90-degree connection, and the top end is arc-shaped and bent. Figure 4 As shown in the figure, the center point of the arc-shaped bending of the top of the hook 1 intersects with the center line of the bottom wall 201.
[0032] In the production process, the 1.5mm thick galvanized sheet is cut to the appropriate size by using machine equipment, and then the production of the bottom beam can be completed after twelve times of bending (including four times of right-angle bending of the rectangular bottom beam body 2, two times of bending of the bending portion 205, four times of bending to form the groove 206, one time of right-angle bending and one time of arc-shaped bending of the hook 1), wherein only three bending angles of 90 degrees, 40 degrees (any angle between 40 degrees and 45 degrees) and arc-shaped bending are included in the twelve times of bending, the production process is simple, and the production is convenient.
[0033] In the use process, the most stress-concentrated part in the overall structure of the bottom beam is the bending part of the bottom end of the hook 1 and the first top wall 203 at a perpendicular angle, and the hardness of the 1.5mm thick galvanized sheet is sufficient to support the use requirement of the bottom beam, so that local deformation of the bottom beam does not occur in the use process.
[0034] Secondly, in the actual use scene, some roller shutter door frames are provided with a threshold at the bottom end, and some are not. The groove 206 at the bottom end of the bottom beam not only plays an aesthetic role, but also can be clamped with the threshold of the roller shutter door which is provided with a threshold, thereby enhancing the sealing performance of the bottom end of the roller shutter door.
[0035] Thus, the embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.
[0036] The above-described embodiments only express some implementation manners of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.
Claims
1. A single hook small bottom beam for fireproof rolling shutter door, comprising a hook and a bottom beam main body, characterized in that: The hook and the bottom beam body are integrally formed, and the hook is a single-layer hook. The bottom beam body is rectangular, the bottom thereof is a bottom wall, the two sides thereof are side walls, and the top thereof is composed of a first top wall, a second top wall and a hook; the first top wall and the second top wall are arranged in parallel on the same horizontal line. The hook and the bottom beam body are made of 1.55 mm thick galvanized plate.
2. The single hook small header for a fire shutter door according to claim 1, characterized in that: One end of the first top wall is bent and connected with the side wall, and the other end is bent and connected with the bottom of the hook.
3. The single hook low sill for a fire shutter door according to claim 1, characterized in that: One end of the second top wall is bent and connected with the side wall, and the other end is provided with a bent portion which is bent downward relative to the hook.
4. The single hook low sill for a fire shutter door according to claim 1, characterized in that: A groove is arranged on the bottom wall, the groove is recessed inwardly relative to the bottom beam body, and the bending angle of the side surface of the groove relative to the bottom wall is 40-45 degrees.
5. The single hook small header for a fire shutter door according to claim 3, characterized in that: The bending angle of the top of the bent portion relative to the second top wall is 40-45 degrees, and the bottom thereof is parallel to the first top wall.
6. The single hook small header for a fire shutter door according to claim 3, characterized in that: The bending angle of the bent portion relative to the second top wall is the same as the bending angle of the side surface of the groove relative to the bottom wall.
7. The single hook low sill for a fire shutter door according to claim 1, characterized in that: The bottom end of the hook is integrally formed with the edge of the first top wall at an angle of 90 degrees, and the top end is arc-shaped; the center point of the arc-shaped bending of the top of the hook intersects with the center line of the bottom wall.