A large width shutter
By using a frame structure and concealed connection design, and by supporting the louvers with flat aluminum and louver brackets, the problem of sagging of wide louvers is solved, while maintaining an aesthetically pleasing appearance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI NEW VISION DOOR WINDOW & CURTAIN WALL ENG
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional venetian blinds are difficult to prevent from sagging effectively on wide slats, and the appearance is not good.
The frame structure combines flat aluminum and louver support blocks, using cross-head self-tapping screws and slots for connection. The beveled design hides the louver support blocks, supports the back of the louvers, and prevents sagging.
It effectively prevents wide louvers from sagging while maintaining a good appearance. The louver support block is hidden behind the louvers and does not affect the aesthetics.
Smart Images

Figure CN224496281U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of doors and windows, and in particular to a wide-width louver. Background Technology
[0002] In recent years, the width of louvers used in various public buildings and residential projects has been increasing. Designers are pursuing a small and exquisite louver effect, but the small cross-section and large width of louvers have made the problem of louver sagging prominent. Traditional solutions to the problem of louver sagging generally include the following two methods:
[0003] The louvers are perforated, with a round rod inserted through the center. This design primarily constrains the louvers horizontally. Because the rod's diameter is slightly smaller than the hole diameter, it doesn't effectively prevent the louvers from sagging vertically. Furthermore, the vertical rod is clearly visible from the outside, resulting in a poor overall appearance.
[0004] Therefore, there is an urgent need for a louver structure that is aesthetically pleasing and can solve the problem of drooping louvers with small cross-sections and large widths. Utility Model Content
[0005] This utility model provides a wide-width louver that solves the problem of drooping louvers with small cross-sections and large widths.
[0006] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:
[0007] A wide-width venetian blind includes:
[0008] The frame is composed of horizontal and vertical louvered frames.
[0009] Flat aluminum, which is vertically connected in the middle of the frame;
[0010] A louver support block, the louver support block being connected to a flat aluminum plate;
[0011] The louvers are horizontally connected to the frame, and the louver support blocks are supported on the back of the louvers.
[0012] Further technology of this utility model:
[0013] Preferably, N flat aluminum sheets are provided according to the length of the louver frame, where N ≥ 1.
[0014] Preferably, the louver support block is provided with a cross-shaped pan head self-tapping screw, and the back of the louver is provided with a slot, into which the cross-shaped pan head self-tapping screw is inserted.
[0015] Preferably, the surface on which the louver support block rests on the back of the louver blade is inclined, and the upper and lower ends of the louver blade are provided with vertical extension sections to cover the louver support block from an outdoor angle.
[0016] The beneficial effects of this utility model are:
[0017] This invention features a specially molded louver support block behind the louver blades. The louver support block is fixed to the flat aluminum to support the louver blades, which can effectively solve the problem of louver blade sagging. Furthermore, the louver support block is hidden behind the louver blades, resulting in a better appearance when viewed from the outside. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A side view schematic diagram of a wide-width louver structure;
[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0021] Figure 3 A front view schematic diagram of a wide-width louver structure;
[0022] In the diagram: 1. Horizontal louver frame; 2. Vertical louver frame; 3. Flat aluminum; 4. Louver support block; 5. Louver blade; 6. Cross-head self-tapping screw; 7. Slot. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0024] like Figure 1-3 This embodiment provides a wide-width venetian blind, comprising:
[0025] The frame is composed of a horizontal louver frame 1 and a vertical louver frame 2; in this embodiment, the horizontal louver frame 1 and the vertical louver frame 2 are connected by screws.
[0026] Flat aluminum 3, which is vertically connected in the middle of the frame; N flat aluminum 3 are set according to the length of the louvered frame 1, where N≥1. In this embodiment, one flat aluminum 3 is set as an illustration.
[0027] Louver support block 4, which is connected to the flat aluminum 3;
[0028] The louver 5 is horizontally connected to the frame, and the louver support block 4 is supported on the back of the louver 5.
[0029] In the above structure, the louver support block 4 supports the back of the louver blade 5, providing support for the middle section of the louver blade 5 and preventing the middle section of the wide louver blade 5 from sagging. For greater structural stability, the louver blade 5 is nailed to the flat aluminum 3 and connected with screws. However, in actual production, it was found that while fixing the louver blade 5 to the back flat aluminum 3 solved the sagging problem of the louver blade 5 to some extent, it also resulted in exposed nail heads, which had a poor aesthetic appearance and was unacceptable to designers and owners.
[0030] To address this, this embodiment employs a hidden connection method, specifically:
[0031] The louver support block 4 is provided with a cross-shaped pan head self-tapping screw 6, and the back of the louver 5 is provided with a slot 7, and the cross-shaped pan head self-tapping screw 6 is inserted into the slot 7.
[0032] The louver support block 4 is supported on the back of the louver blade 5 with an inclined surface, and the upper and lower ends of the louver blade 5 are provided with vertical extension sections to cover the louver support block 4 from the outdoor angle.
[0033] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. A wide-width venetian blind, characterized in that, include: The frame is composed of horizontal and vertical louvered frames. Flat aluminum, which is vertically connected in the middle of the frame; A louver support block, the louver support block being connected to a flat aluminum plate; The louvers are horizontally connected to the frame, and the louver support blocks are supported on the back of the louvers.
2. A wide-width venetian blind according to claim 1, characterized in that, The flat aluminum is set in N units according to the length of the louver frame, where N≥1.
3. A wide-width venetian blind according to claim 1, characterized in that, The louver support block is equipped with a cross-shaped pan head self-tapping screw, and the back of the louver is equipped with a slot, into which the cross-shaped pan head self-tapping screw is inserted.
4. A wide-width venetian blind according to claim 1, characterized in that, The louver support block is supported on the back of the louver blade with an inclined surface, and the upper and lower ends of the louver blade are provided with vertical extension sections to cover the louver support block from the outdoor angle.