A fixing structure for a greenhouse covering film

By using 1.2mm thick aluminum alloy clips and stainless steel spring clips on the greenhouse covering film, coated with fluorocarbon resin and PVD coating, and connected by connectors and bolts, the problems of film tearing and spring clip detachment in windy weather are solved, improving the durability and connection strength of the fixing structure.

CN224386319UActive Publication Date: 2026-06-23SHANGHAI QIANHUI GREENHOUSE ENG TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI QIANHUI GREENHOUSE ENG TECH
Filing Date
2025-07-26
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing greenhouse covering films are prone to tearing and damage in windy weather. The fixing points are easily deformed or broken at the screw fixing points, leading to joint failure. The retaining springs are also prone to jumping out, resulting in high maintenance costs.

Method used

The clips are made of 1.2mm thick aluminum alloy with a fluorocarbon resin coating and a PVD coating on the spring clips. The clips have equidistant pre-drilled mounting holes and are securely connected by connectors and bolts.

Benefits of technology

The structural strength of the fixing point is enhanced, the probability of the retaining ring jumping out is reduced, the service life of the retaining strip and retaining ring is extended, and maintenance costs are reduced.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of greenhouse structure technology and discloses a fixing structure for a greenhouse covering film, including two locking strips, each with a locking groove on its upper surface, and a retaining spring on the upper part of one of the locking strips. This fixing structure for a greenhouse covering film, by setting the locking strips, locking grooves, and other components, increases the thickness of the locking strips to 1.2mm, compared to the existing 1.0mm thickness by 0.2mm. The original opening groove width of 16mm is reduced to 15mm. Reducing the opening groove width effectively enhances the structural strength of the fixing point and reduces the occurrence of retaining spring detachment in windy weather. A fluorocarbon resin coating is applied to the surface of the locking strips, and a PVD coating is applied to the surface of the retaining spring, effectively improving the durability and corrosion resistance of the locking strips and retaining spring, thus extending their service life. The connection between the two locking strips is enhanced by using a first connector and a second connector and a second connecting bolt.
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Description

Technical Field

[0001] This application relates to the field of greenhouse structure technology, specifically a fixing structure for greenhouse covering film. Background Technology

[0002] A greenhouse, also known as a hothouse, is a building that can control or partially control the plant growth environment. It is mainly used for non-seasonal or non-regional plant cultivation, scientific research, generational breeding, and ornamental plant cultivation. In existing technology, a film is usually covered on the top of the greenhouse, and the two ends are secured to the inside of the slot by spring clips. The slot is installed on the top of the greenhouse frame with several screws to fix the film.

[0003] However, existing technologies have found that the covering film is prone to tearing and damage in windy weather, causing significant losses to users and incurring high repair costs. The main cause of damage is that the slots that fix the top film are deformed or broken at the screw fixing points, leading to joint failure and film tearing. In addition, the retaining springs are prone to jumping out in windy weather. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a fixing structure for greenhouse covering film, which has the advantages of effectively enhancing the structural strength of fixing points and effectively reducing the occurrence of spring clips jumping out in windy weather. It solves the problems of existing technologies where the fixing grooves for fixing the top film are easily deformed or broken at the screw fixing points, leading to joint failure and film tearing, and the spring clips easily jumping out in windy weather.

[0005] To achieve the above objectives, this application provides the following technical solution: a fixing structure for a greenhouse covering film, comprising two clips, each clip having a slot on its upper surface, a retaining spring on the upper surface of one of the clips, each clip having a thickness of 1.2 mm, each clip having an opening groove on its upper surface, each opening groove having a width of 15 mm, the clips being made of aluminum alloy, and the outer surface of the clips being covered with a fluorocarbon resin coating.

[0006] To improve the structural strength of the fixing point and reduce the probability of the retaining spring jumping out due to strong winds, the above solution involves creating a retaining groove on the upper surface of the retaining strip and setting its thickness to 1.2mm, an increase of 0.2mm compared to the existing 1.0mm thickness. While the weight of the modified retaining strip and groove increases slightly, it enhances the structural strength of the fixing point. Each retaining strip has an opening groove on its upper surface, which is reduced from the original 16mm width to 15mm. This reduction effectively addresses the issue of the original retaining spring jumping out due to its large opening width, thus reducing the likelihood of the retaining spring jumping out in strong winds. The retaining strip is made of aluminum alloy, which is lightweight yet strong, possesses excellent load-bearing capacity, strong corrosion resistance, and good processability. Complex cross-sectional shapes can be easily customized through extrusion, stamping, and other processes to meet diverse design needs. A fluorocarbon resin coating is applied to the surface of the retaining strip. This coating offers excellent corrosion resistance and weather resistance, making it suitable for environments with strong acid rain or salt spray, thus extending the service life of the retaining strip.

[0007] Furthermore, the retaining ring is made of stainless steel, and its outer surface is covered with a PVD coating.

[0008] The above scheme selects stainless steel as the material for the retaining ring. Stainless steel has excellent corrosion resistance, high strength and toughness, good heat resistance and excellent processing performance. It can maintain structural stability at high temperatures and has excellent mechanical properties such as tensile strength, yield strength and elongation, ensuring long-term use. In addition, a PVD coating is applied to the surface of the retaining ring. PVD coating is a thin film coating formed on the surface of the retaining ring in a vacuum environment by physical vapor deposition. Titanium is used as the material, which has high hardness, low coefficient of friction and excellent corrosion resistance, which can improve the durability of the retaining ring.

[0009] Furthermore, each of the card strips has pre-drilled mounting holes arranged at equal intervals on its upper surface, and each pre-drilled mounting hole has a fixing bolt installed on its inner wall.

[0010] The above solution involves creating pre-drilled mounting holes on the upper surface of the card strip to locate the holes. Fixing bolts are then installed in the corresponding pre-drilled mounting holes, making it easier for operators to position and install the fixing bolts on-site.

[0011] Furthermore, a clamp is provided below the snap ring, and the outer surface of each fixing bolt is fixedly installed to the inner wall of the clamp.

[0012] The above solution involves placing the clamp below the retaining spring and connecting the fixing bolt to the clamp. The connection between the fixing bolt and the retaining strip and the clamp facilitates fixing the retaining strip to the surface of the clamp, thus achieving the fixation of the retaining strip.

[0013] Furthermore, a connecting piece is provided above the clamp, and the inner wall of the connecting piece is fixedly installed with the outer surface of the corresponding fixing bolt.

[0014] The above method involves placing the connecting piece above the clamp and connecting the fixing bolt to the connecting piece. The fixing bolt allows the clamp and the connecting piece to be installed, thus facilitating the splicing and installation of the two clamps.

[0015] Furthermore, each of the card strips has two connectors fixedly connected to its outer surface and two connectors fixedly connected to its bottom surface.

[0016] The above method involves installing connector one on the outer surface of the card strip as a fixed connection, and installing connector two on the bottom surface of the card strip as a fixed connection, thereby achieving the positioning and installation effect of connector one and connector two.

[0017] Furthermore, each of the inner walls of the two connecting parts is fixedly installed with a connecting bolt, and the outer surface of each connecting bolt is fixedly installed with the inner wall of the corresponding connecting part.

[0018] The above method involves installing a connecting bolt on the inner wall of two of the connecting parts and connecting the connecting bolt to the other two connecting parts, so that the corresponding two connecting parts can be fixed by the connecting bolt.

[0019] Furthermore, each of the two connecting parts 2 has a connecting bolt 2 fixedly installed on its inner wall, and the outer surface of each connecting bolt 2 is fixedly installed to the inner wall of the corresponding connecting part 2.

[0020] By using the above method, connecting bolt 2 is installed on the inner wall of two of the connecting parts 2, and connecting bolt 2 is connected to the other two connecting parts 2, so that the corresponding two connecting parts 2 can be fixed by connecting bolt 2, thereby improving the connection strength between the two clips through the connection between connecting part 1, connecting bolt 1 and connecting part 2, connecting bolt 2.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This is a fixing structure for greenhouse covering film. By setting components such as clips and slots, the thickness of the clips is set to 1.2mm, which is 0.2mm thicker than the existing 1.0mm thickness. Each clip has an opening groove on its upper surface. The opening groove width is reduced from the original 16mm to 15mm. Reducing the width of the opening groove can effectively enhance the structural strength of the fixing point and effectively reduce the problem of the retaining spring jumping off in strong winds. A fluorocarbon resin coating is applied to the surface of the clips, and a PVD coating is applied to the surface of the retaining spring, which can effectively improve the durability and corrosion resistance of the clips and retaining spring, and extend their service life. The connection between the two clips is enhanced by setting a first connector and a first connecting bolt, and a second connector and a second connecting bolt. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0024] Figure 2 This is the overall main view structure diagram of this application;

[0025] Figure 3 This is a structural diagram of the snap ring in this application;

[0026] Figure 4 This is a structural diagram showing the connection relationship between the connecting piece and the fixing bolt in this application;

[0027] Figure 5 This is a structural diagram showing the connection relationship between connector one and connecting bolt one in this application;

[0028] Figure 6 This is a structural diagram showing the connection relationship between the retaining ring and the PVD coating in this application;

[0029] Figure 7 This is a structural diagram showing the connection between the card strip and the fluorocarbon resin coating in this application.

[0030] In the picture:

[0031] 1. Clip; 101. Fluorocarbon resin coating; 2. Clip slot; 3. Snap ring; 301. PVD coating; 4. Pre-drilled mounting hole; 5. Fixing bolt; 6. Clamp; 7. Connector 1; 8. Connecting bolt 1; 9. Connector 2; 10. Connecting bolt 2; 11. Connecting piece. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 2 , Figure 5 and Figure 7 The fixing structure of the greenhouse covering film in this embodiment includes two clips 1, each clip 1 has a slot 2 on its upper surface, and a retaining spring 3 is provided above one of the clips 1. Each clip 1 has a thickness of 1.2mm, and each clip 1 has an opening groove on its upper surface. The width of each opening groove is 15mm. The clip 1 is made of aluminum alloy, and the outer surface of the clip 1 is covered with a fluorocarbon resin coating 101.

[0034] Please see Figure 2 , Figure 3 and Figure 6 The snap ring 3 is made of 316 stainless steel, and its outer surface is covered with a PVD coating 301. The choice of 316 stainless steel for snap ring 3 is due to its excellent corrosion resistance, high strength and toughness, good heat resistance and excellent processing performance. It can maintain structural stability at high temperatures and has excellent mechanical properties such as tensile strength, yield strength and elongation, ensuring long-term use. Furthermore, the PVD coating 301 is applied to the surface of snap ring 3. PVD coating 301 is a thin film coating formed on the surface of snap ring 3 in a vacuum environment by physical vapor deposition. It uses titanium as the material and has high hardness, low coefficient of friction and excellent corrosion resistance, which can improve the durability of snap ring 3.

[0035] Please see Figure 4 and Figure 5 Each clip 1 has equidistant pre-drilled mounting holes 4 on its upper surface. Each pre-drilled mounting hole 4 has a fixing bolt 5 installed on its inner wall. The pre-drilled mounting holes 4 on the upper surface of the clip 1 are used to position the pre-drilled mounting holes 4. The fixing bolt 5 is installed in the corresponding pre-drilled mounting holes 4, which makes it easy for operators to position and install the fixing bolt 5 on site.

[0036] Please see Figure 1 , Figure 2 and Figure 4 A clamp 6 is provided below the snap ring 3. The outer surface of each fixing bolt 5 is fixedly installed to the inner wall of the clamp 6. The clamp 6 is placed below the snap ring 3, and the fixing bolt 5 is connected to the clamp 6. Through the connection between the fixing bolt 5, the snap strip 1 and the clamp 6, the snap strip 1 can be fixed to the surface of the clamp 6, thereby fixing the snap strip 1.

[0037] Please see Figure 4 A connecting piece 11 is provided above the clamp 6. The inner wall of the connecting piece 11 is fixedly installed with the outer surface of the corresponding fixing bolt 5. The connecting piece 11 is placed above the clamp 6, and the fixing bolt 5 is connected to the connecting piece 11. The fixing bolt 5 enables the clamp strip 1 and the connecting piece 11 to be installed, thereby facilitating the splicing and installation of the two clamp strips 1.

[0038] Please see Figure 2 and Figure 5 Two connectors 1 7 are fixedly connected to the outer surface of each card strip 1, and two connectors 2 9 are fixedly connected to the bottom surface of each card strip 1. Connector 1 7 is installed on the outer surface of card strip 1 for fixed connection, and connector 2 9 is installed on the bottom surface of card strip 1 for fixed connection, so as to achieve the positioning and installation effect of connector 1 7 and connector 2 9.

[0039] Please see Figure 2 and Figure 5 Two of the connectors 7 have connecting bolts 8 fixedly installed on their inner walls. The outer surface of each connecting bolt 8 is fixedly installed to the inner wall of the corresponding connector 7. The connecting bolts 8 are installed on the inner walls of two of the connectors 7 and connected to the other two connectors 7, so that the two corresponding connectors 7 can be fixed by the connecting bolts 8.

[0040] Please see Figure 2 and Figure 5 The inner walls of two connectors 2 9 are fixedly equipped with connecting bolts 2 10. The outer surface of each connecting bolt 2 10 is fixedly installed with the inner wall of the corresponding connector 2 9. The connecting bolts 2 10 are installed on the inner walls of two connectors 2 9 and connected to the other two connectors 2 9, so that the corresponding two connectors 2 9 can be fixed by the connecting bolts 2 10. In this way, the connection strength between the two clips 1 can be improved by the connection between connector 1 7, connecting bolt 1 8 and connector 2 9, connecting bolt 2 10.

[0041] This embodiment describes a fixing structure for a greenhouse covering film. By setting components such as clips 1 and slots 2, the thickness of clips 1 is set to 1.2mm, which is 0.2mm thicker than the existing 1.0mm thickness. Each clip 1 has an opening slot on its upper surface. The opening slot width is reduced from the original 16mm to 15mm. Reducing the width of the opening slot can effectively enhance the structural strength of the fixing point and effectively reduce the problem of the spring clips 3 jumping off in windy weather. A fluorocarbon resin coating 101 is applied to the surface of the clips 1, and a PVD coating 301 is applied to the surface of the spring clips 3, which can effectively improve the durability and corrosion resistance of the clips 1 and spring clips 3, and extend their service life. The connection between the two clips 1 is improved by setting connector 1 7, connecting bolt 1 8, connector 2 9, and connecting bolt 2 10.

[0042] It should be noted that in the existing technology, most of the clips 1 are 1.0mm thick and have an opening width of 16mm. Although the modified clips 1 are heavier and have a higher overall cost, they can improve the structural strength of the fixing point, reduce damage, and thus reduce the later maintenance costs.

[0043] The working principle of the above embodiments is as follows:

[0044] The thickness of the retaining strip 1 is set to 1.2mm, an increase of 0.2mm compared to the existing 1.0mm thickness. The opening groove width on the top of the retaining strip 1 is reduced from 16mm to 15mm. This reduction in opening groove width effectively enhances the structural strength of the fixing point and reduces the likelihood of the retaining spring 3 jumping off in strong winds. A fluorocarbon resin coating 101 is applied to the surface of the retaining strip 1, and a PVD coating 301 is applied to the surface of the retaining spring 3. This effectively improves the durability and corrosion resistance of both the retaining strip 1 and the retaining spring 3. The service life of the clip 1 and the snap ring 3 is such that when the length of use requires the two clips 1 to be connected, the connecting piece 11 is installed between the two clips 1 at the connection position, and then the fixing bolt 5 is installed through the reserved installation hole 4 to realize the connection between the two clips 1 and can be connected with the clamp 6. Then, it is connected to the connecting bolt 8 through the connecting piece 1 7, and connected to the connecting bolt 2 10 through the connecting piece 2 9. The connection strength between the two clips 1 can be improved by setting up components such as the connecting piece 1 7, the connecting bolt 1 8, the connecting piece 2 9, and the connecting bolt 2 10.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 limitations, 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.

[0046] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a greenhouse covering film, comprising two clamping strips (1), characterized in that: Each of the card strips (1) has a card slot (2) on its upper surface, and a retaining spring (3) is provided above one of the card strips (1). Each of the card strips (1) has a thickness of 1.2 mm, and each of the card strips (1) has an opening groove on its upper surface. The width of each opening groove is 15 mm. The card strips (1) are made of aluminum alloy, and the outer surface of the card strips (1) is covered with a fluorocarbon resin coating (101).

2. The structure for securing a greenhouse covering film according to claim 1, wherein: The snap ring (3) is made of 316 stainless steel, and the outer surface of the snap ring (3) is covered with a PVD coating (301).

3. The structure for securing a greenhouse covering film according to claim 1, wherein: Each of the card strips (1) has equidistant pre-installed mounting holes (4) on its upper surface, and each of the pre-installed mounting holes (4) has a fixing bolt (5) installed on its inner wall.

4. The structure for securing a greenhouse covering film according to claim 3, wherein: The circlip (3) is provided with a clamp (6) below it, and the outer surface of each fixing bolt (5) is fixedly installed to the inner wall of the clamp (6).

5. The structure for securing a greenhouse covering film according to claim 4, wherein: A connecting piece (11) is provided above the clamp (6), and the inner wall of the connecting piece (11) is fixedly installed with the outer surface of the corresponding fixing bolt (5).

6. The structure for securing a greenhouse covering film according to claim 1, wherein: Two connectors (7) are fixedly connected to the outer surface of each of the card strips (1), and two connectors (9) are fixedly connected to the bottom surface of each of the card strips (1).

7. A structure for securing a greenhouse covering according to claim 6, wherein: The inner walls of both of the connectors (7) are fixedly installed with connecting bolts (8), and the outer surface of each connecting bolt (8) is fixedly installed with the inner wall of the corresponding connector (7).

8. The fixing structure for a greenhouse covering film according to claim 6, characterized in that: The inner walls of the two connecting parts (9) are fixedly installed with connecting bolts (10), and the outer surface of each connecting bolt (10) is fixedly installed with the inner wall of the corresponding connecting part (9).