A shutter capable of quickly adjusting the fixed angle of a shutter

Abstract

The utility model discloses a shutter of fixed angle of louver blind is adjusted fast, including several louver blinds, rotates and is installed in the outer frame and carries out the rotation through drive lever drive, positioning base plate, is fixed in the outer frame side, linkage board, movable installation is positioned on the base plate and drives louver blind rotation through drive lever, angle fixing unit sets up in positioning base plate and linkage board is used for the quick fixing of linkage board in the different position of positioning base plate, through the different fixed position of linkage board and positioning base plate, keeps louver blind at different angles. The shutter can be used in the breeding house, and the linkage board and drive lever can drive the rotation of the louver blind to adjust to the proper angle to keep ventilation, and the angle fixing unit can quickly fix the louver blind to the preset angle to ensure that the breeding house can be ventilated according to the external environment.

Description

Technical Field

[0001] This utility model relates to the technical field of pigsty ventilation equipment, specifically a louver with a quickly adjustable fixed angle. Background Technology

[0002] In livestock farming, especially in pig farm production management, the control of the indoor environment is crucial, and ventilation is a key factor affecting the balance of temperature and humidity within the pigsty. Good ventilation can effectively regulate air circulation within the pigsty, maintain a suitable temperature and humidity range, and provide a comfortable environment for pig growth. The farrowing house, as the core area for piglet rearing, has even stricter requirements for ventilation. Poor ventilation leads to increased humidity and the accumulation of harmful gases, easily inducing diseases such as diarrhea in piglets, seriously affecting their survival rate and health, and consequently causing significant economic losses to livestock production.

[0003] Venetian blinds are commonly used adjustable components in pig farm ventilation systems, and the precise control of their angle directly affects the ventilation effect. Currently, there are two main methods for adjusting the angle of Venetian blinds in existing pig farms: one relies on an electric control system, and the other is manually adjusted. However, both of these methods have significant drawbacks.

[0004] With manual adjustment, operators often struggle to precisely adjust the blinds to the ideal angle, requiring the use of tools for measurement, which is cumbersome and inefficient. More importantly, manual adjustment makes it difficult to repeatedly position specific angles, resulting in unstable ventilation and an inability to guarantee a consistent environment inside the building.

[0005] While using an electric control system for angle adjustment improves convenience to some extent, it also presents several problems. Electric systems require power supplies and complex controllers, undoubtedly increasing initial investment costs. Furthermore, pig farms, especially farrowing pens, are typically in high-temperature and high-humidity environments. Electronic components in electric systems are highly susceptible to malfunction in such harsh conditions, affecting not only the normal adjustment function of the blinds but also significantly increasing maintenance costs and repair frequency, causing inconvenience to the daily operation of the pig farm.

[0006] In summary, existing methods for adjusting the angle of louvers in pig farms suffer from high costs, difficult maintenance, and poor adjustment accuracy and repeatability, failing to meet the needs of pig farms, especially farrowing pens, for efficient and stable ventilation systems. Utility Model Content

[0007] Therefore, in order to solve the above-mentioned shortcomings, this utility model provides a venetian blind with a fast adjustable fixed angle. The venetian blind is provided with a positioning base plate and a movable linkage plate on the outside of the window frame. The linkage plate can drive the drive rod to move, thereby driving the venetian blind to rotate. At the same time, combined with the angle fixing unit, the linkage plate can be quickly fixed at different positions on the positioning base plate, effectively realizing that the angle of the venetian blind can be adjusted and can also be quickly fixed at a preset angle to ensure that the farrowing room of the pig farm is in a suitable ventilation environment.

[0008] This invention is achieved by constructing a venetian blind with a fixed angle that can be quickly adjusted, comprising several venetian blinds that are rotatably installed in the outer frame and driven to rotate by a drive rod. Positioning base plate, fixed to the side of the outer frame; The linkage plate is movably mounted on the positioning base plate and drives the venetian blind to rotate via a drive rod. An angle fixing unit is set on the positioning base plate and the linkage plate to quickly fix the linkage plate at different positions on the positioning base plate, and keep the venetian blind at different angles by the different fixing positions of the linkage plate and the positioning base plate.

[0009] Preferably, the positioning base plate is provided with vertically distributed dovetail-shaped sliders, and the linkage plate is installed on the dovetail-shaped sliders of the positioning base plate through dovetail grooves to maintain up-and-down sliding. A first strip hole is provided at the position of the positioning base plate corresponding to the drive rod, and an elongated hole is provided at the position of the drive rod corresponding to the first strip hole. A limiting head is provided on the linkage plate that passes through the first strip hole and the elongated hole. When the linkage plate slides up and down, the limiting head moves up and down in the first strip hole and drives the drive rod to rotate around the hinge point inside the outer frame.

[0010] Preferably, there are multiple drive rods, each driving multiple venetian blinds to rotate synchronously. The linkage plate is provided with multiple limit heads, each of which is connected to a drive rod to drive multiple drive rods to rotate synchronously.

[0011] Preferably, the angle fixing unit is a positioning hole group or a limiting block group. The positioning hole group consists of multiple positioning holes formed on the positioning base plate and a connecting hole formed on the linkage plate. The multiple positioning holes are vertically distributed on the positioning base plate. The linkage plate is fixed to the positioning base plate by a pin passing through the connecting hole and any one of the positioning holes.

[0012] Preferably, the limiting block assembly includes multiple vertically distributed limiting blocks disposed on the positioning base plate. A second vertically arranged strip hole is also provided on the positioning base plate. The limiting blocks are fixed to the outside of the second strip hole of the positioning base plate. The linkage plate slides up and down through a pin passing through the connecting hole and the second strip hole. A columnar end is provided at one end of the pin. The columnar end is inserted into the second strip hole to slide up and down. An elastic lever is provided on the side of the columnar end to maintain extension and retraction. When the elastic lever extends, it contacts the limiting block to fix the linkage plate to the positioning base plate.

[0013] Preferably, the Venetian blind is rotatably installed inside the outer frame via a hinge rod at one end. A fixing plate is provided at the outer end of the hinge rod, and lifting plates are respectively hinged to both ends of the fixing plate. The end of the drive rod is hinged to one lifting plate via a connecting plate, the middle part of the drive rod is hinged to another lifting plate, and the other end of the drive rod is movably connected to a linkage plate.

[0014] Compared with the prior art, the present invention has the following advantages: This louver adopts a purely mechanical structure design, eliminating the need for an electric control system, power supply, and complex controller. This saves on the procurement costs of electronic components and avoids the need for frequent replacement of electronic components in high-temperature and high-humidity environments. This significantly reduces the equipment procurement costs over long-term use. Furthermore, the purely mechanical structure can adapt to the harsh environment of high temperature and high humidity in pig farm farrowing rooms, eliminating the need for regular circuit maintenance or component replacement. It is essentially maintenance-free, reducing maintenance costs to zero. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings: Figure 1 This is a schematic diagram of the angle fixing unit as a group of positioning holes in this utility model (the venetian blind is in the first fixed state). Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the angle fixing unit as a group of positioning holes in this utility model (the venetian blind is in the second fixed state). Figure 4 This is a schematic diagram of the angle fixing unit as a group of positioning holes in this utility model (the venetian blind is in the third fixed state). Figure 5 for Figure 4 A schematic diagram of the split structure; Figure 6 for Figure 5A magnified view of a portion of point A in the middle; Figure 7 for Figure 5 A magnified view of a portion of point B in the middle; Figure 8 This is a schematic diagram of the angle fixing unit being a limiting block assembly in this utility model; Figure 9 for Figure 8 A magnified view of a portion of point C in the middle; Figure 10 This is a schematic diagram of the transmission connection structure between the Venetian blind and the drive rod in this utility model; In the diagram: 1. Outer frame; 2. Venetian blind; 3. Drive rod; 4. Positioning base plate; 5. Linkage plate; 6. Pin; 7. Limiting head; 8. First strip hole; 9. Connecting hole; 10. Positioning hole; 11. Second strip hole; 12. Limiting block; 13. Columnar block; 14. Elastic lever; 15. Hinge rod; 16. Fixing plate; 17. Lifting plate; 18. Connecting plate. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0017] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] As described in the background section, existing venetian blinds typically rely on manual adjustment or an electric control system for adjusting the blind angle. Electric control systems not only increase costs but also expose electrical components to high temperature and humidity, making them prone to damage and increasing maintenance costs. Furthermore, untimely blind angle adjustments can lead to increased internal temperatures, negatively impacting piglet growth. Manual adjustment cannot quickly reach the preset angle. In pig farming, the opening and closing angles of venetian blinds are generally categorized into four types based on the external environment (spring, summer, autumn, and winter, as temperatures are roughly the same in spring and autumn). Therefore, the opening and closing angles of venetian blinds can be roughly divided into three categories, and manual adjustment cannot quickly bring them to the preset angle.

[0019] Based on the above reasons, in order to solve the above problems, this utility model provides the following technical solution: Example 1, Please see the appendix Figures 1-5 A venetian blind with a fast-adjustable fixed angle includes several venetian blinds 2, which are rotatably installed in the outer frame 1 and driven to rotate by a drive rod 3; Positioning base plate 4 is fixed to the side of outer frame 1; The linkage plate 5 is movably mounted on the positioning base plate 4 and drives the venetian blind 2 to rotate via the drive rod 3; An angle fixing unit is set on the positioning base plate 4 and the linkage plate 5 to quickly fix the linkage plate 5 at different positions on the positioning base plate 4, and to keep the venetian blind 2 at different angles through the different fixing positions of the linkage plate 5 and the positioning base plate 4.

[0020] Please see the appendix Figure 6 To address the problem that the linkage plate cannot move on the positioning base plate, thus preventing the drive rod and venetian blind from rotating, a feasible solution is provided here. The positioning base plate 4 is provided with vertically distributed dovetail-shaped sliders. The linkage plate 5 is mounted on the dovetail-shaped sliders of the positioning base plate 4 through dovetail grooves to maintain vertical sliding. A first strip hole 8 is provided at the position of the positioning base plate 4 corresponding to the drive rod 3. An elongated hole is provided at the position of the drive rod 3 corresponding to the first strip hole 8. A limiting head 7 is provided on the linkage plate 5, passing through the first strip hole 8 and the elongated hole. When the linkage plate 5 slides up and down, the limiting head 7 moves up and down within the first strip hole 8 and drives the drive rod 3 to rotate around the hinge point inside the outer frame 1.

[0021] Please refer to the appendix again. Figure 1 To solve the problem that the linkage plate cannot drive all the Venetian blinds to rotate synchronously, a feasible solution is provided here. There are multiple drive rods 3, which drive multiple Venetian blinds 2 to rotate synchronously. The linkage plate 5 is provided with multiple limit heads 7, and each limit head 7 is connected to the drive rod 3 to drive multiple drive rods 3 to rotate synchronously.

[0022] Example 2, Please see the appendix Figure 5 and attached Figure 7 Based on Embodiment 1, in order to solve the problem of not being able to quickly fix the linkage plate at different preset positions on the positioning base plate, a feasible solution is provided here. The angle fixing unit is a positioning hole group, which consists of multiple positioning holes 10 opened on the positioning base plate 4 and a connecting hole 9 opened on the linkage plate 5. The multiple positioning holes 10 are vertically distributed on the positioning base plate 4. The linkage plate 5 is fixed to the positioning base plate 4 by a pin 6 passing through the connecting hole 9 and any one of the positioning holes 10.

[0023] Example 3, Please see the appendix Figure 8 and attached Figure 9 Based on Embodiment 1, to solve the problem of not being able to quickly fix the linkage plate at different preset positions on the positioning base plate, another feasible solution is provided here. The angle fixing unit is a limiting block group. The limiting block group includes multiple vertically distributed limiting blocks 12 disposed on the positioning base plate 4. A vertically arranged second strip hole 11 is also provided on the positioning base plate 4. The limiting block 12 is fixed on the outside of the second strip hole 11 of the positioning base plate 4. The linkage plate 5 slides up and down through the connecting hole 9 and the second strip hole 11 by the pin 6. A columnar block 13 is provided at one end of the pin 6. The columnar block 13 slides up and down by being inserted into the second strip hole 11. An elastic lever 14 for maintaining extension and retraction is provided on the side of the columnar block 13. When the elastic lever 14 extends, it contacts the limiting block 12 to fix the linkage plate 5 to the positioning base plate 4.

[0024] Furthermore, the elastic lever 14 is installed in the mounting hole preset on the side of the cylindrical block 13 through an elastic element. Under the elastic force of the elastic element, the elastic lever 14 is kept extending out of the mounting hole and in contact with the limiting block 12 to fix the linkage plate 5 and the positioning base plate 4. When it is necessary to adjust the angle of the Venetian blind, simply press the elastic lever 14 with your hand to retract it into the mounting hole, so that the elastic lever 14 is separated from the limiting block 12, and the pin 6 can be moved up and down to adjust the angle of the Venetian blind.

[0025] According to the descriptions in Embodiments 2 and 3, the number of fixed positions of the linkage plate 5 and the positioning base plate 4 is related to the number of positioning holes 10 or limiting blocks 12. The attached drawings only show 3 positioning holes 10 or 3 limiting blocks 12.

[0026] Please see the appendix Figure 1 When the linkage plate 5 is inserted into the bottom positioning hole 10 through the pin 6, it drives the venetian blind 2 to rotate to the first tilt angle (approximately 30°). This angle is suitable for winter, ensuring ventilation in the breeding house while also effectively keeping the interior warm.

[0027] Please see the appendix Figure 3 When the linkage plate 5 is inserted into the positioning hole 10 in the middle position through the pin 6, it drives the venetian blind 2 to rotate to the second tilt angle (approximately 70°). This angle is suitable for spring and autumn to ensure rapid ventilation in the breeding house.

[0028] Please see the appendix Figure 4 When the linkage plate 5 is inserted into the uppermost positioning hole 10 through the pin 6, it drives the venetian blind 2 to rotate to the third tilt angle (approximately 80°). This angle is suitable for summer to ensure rapid ventilation and cooling in the breeding house and reduce the internal temperature.

[0029] Example 4, Please see the appendix Figure 10 Based on Embodiment 1, in order to solve the problem that the drive rod cannot drive the Venetian blind to rotate, a feasible solution is provided here. The Venetian blind 2 is rotatably installed inside the outer frame 1 through the hinge rod 15 at the end. A fixing plate 16 is provided at the outer end of the hinge rod 15. Lifting plates 17 are respectively hinged at both ends of the fixing plate 16. The end of the drive rod 3 is hinged to one lifting plate 17 through the connecting plate 18, the middle part of the drive rod 3 is hinged to another lifting plate 17, and the other end of the drive rod 3 is movably connected to the linkage plate 5.

[0030] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A type of Venetian blind with a quickly adjustable fixed angle, characterized in that: include, Several Venetian blinds are rotatably installed inside the outer frame and driven to rotate by a drive rod; Positioning base plate, fixed to the side of the outer frame; The linkage plate is movably mounted on the positioning base plate and drives the venetian blind to rotate via a drive rod. An angle fixing unit is set on the positioning base plate and the linkage plate to quickly fix the linkage plate at different positions on the positioning base plate, and keep the venetian blind at different angles by the different fixing positions of the linkage plate and the positioning base plate.

2. The Venetian blind with a fixed angle for quick adjustment according to claim 1, characterized in that: The positioning base plate is provided with vertically distributed dovetail-shaped sliders. The linkage plate is installed on the dovetail-shaped sliders of the positioning base plate through dovetail grooves to maintain up-and-down sliding. A first strip hole is provided at the position of the positioning base plate corresponding to the drive rod. An elongated hole is provided at the position of the drive rod corresponding to the first strip hole. A limiting head is provided on the linkage plate that passes through the first strip hole and the elongated hole. When the linkage plate slides up and down, the limiting head moves up and down in the first strip hole and drives the drive rod to rotate around the hinge point inside the outer frame.

3. The Venetian blind with a fixed angle for quick adjustment according to claim 2, characterized in that: There are multiple drive rods, each driving multiple venetian blinds to rotate synchronously. The linkage plate is provided with multiple limit heads, each of which is connected to a drive rod to drive multiple drive rods to rotate synchronously.

4. The Venetian blind with a fixed angle for quick adjustment according to claim 1, characterized in that: The angle fixing unit is a positioning hole group or a limiting block group. The positioning hole group consists of multiple positioning holes on the positioning base plate and a connecting hole on the linkage plate. The multiple positioning holes are vertically distributed on the positioning base plate. The linkage plate is fixed to the positioning base plate by a pin passing through the connecting hole and any one of the positioning holes.

5. A venetian blind with a fixed angle for quick adjustment according to claim 4, characterized in that: The limiting block assembly includes multiple vertically distributed limiting blocks disposed on the positioning base plate. A second vertically arranged strip hole is also provided on the positioning base plate. The limiting blocks are fixed to the outside of the second strip hole on the positioning base plate. The linkage plate slides up and down through a pin passing through the connecting hole and the second strip hole. A columnar end is provided at one end of the pin. The columnar end is inserted into the second strip hole to slide up and down. An elastic lever is provided on the side of the columnar end to maintain extension and retraction. When the elastic lever extends, it contacts the limiting block to fix the linkage plate to the positioning base plate.

6. The Venetian blind with a fixed angle for quick adjustment according to claim 1, characterized in that: The venetian blind is rotatably installed inside the outer frame via a hinge rod at one end. A fixing plate is provided at the outer end of the hinge rod, and lifting plates are respectively hinged to both ends of the fixing plate. The end of the drive rod is hinged to one lifting plate via a connecting plate, the middle part of the drive rod is hinged to another lifting plate, and the other end of the drive rod is movably connected to a linkage plate.

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