Connecting structure of greenhouse cloth
By setting upper and lower connectors on the film clamp, the problem of additional ventilation required in the sealed state of traditional greenhouse fabric connection is solved, realizing flexible switching of greenhouse state and ventilation adjustment, improving service life and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-13
AI Technical Summary
When traditional greenhouse fabric is connected to the frame, the fixed door and fabric form a sealed state, requiring additional ventilation structures. Switching between these states is inconvenient, affecting ventilation efficiency and lifespan.
An upper and lower connector are installed on the film clamp. The greenhouse can be fixed to the upper or lower connector to achieve a sealed or limited ventilation state. The greenhouse state can be switched by the hanging structure.
It enables flexible switching of greenhouse status, avoids problems such as seedling burn caused by untimely ventilation, has a simple structure and is easy to operate, and extends the service life of the greenhouse cloth.
Smart Images

Figure CN223987472U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of greenhouse accessories, and relates to a connection structure for greenhouse fabric. Background Technology
[0002] A greenhouse typically consists of a frame structure covered by a fabric covering, forming a sealed space. The fabric includes the main structure covering the curved sides of the greenhouse and the end panels covering both ends. In traditional greenhouses, the fabric and frame are connected by steel wires, which pierce the fabric and wrap around the frame to secure the connection.
[0003] Chinese utility model CN221689474U (publication date: September 13, 2024) discloses an improved greenhouse fabric connection structure, specifically a fixing buckle for connecting a greenhouse to a greenhouse fabric. The buckle includes a connecting sleeve with a precession-shaped cross-section. The precession-shaped notch of the connecting sleeve allows it to be snapped onto the greenhouse frame covered with the greenhouse fabric. The outer wall of the connecting sleeve has a connecting body for hooking onto the greenhouse door fabric or greenhouse door screen. This utility model allows the connecting sleeve to directly engage with the greenhouse frame, enabling the greenhouse fabric to be clamped and fixed between the connecting sleeve and the greenhouse frame. Furthermore, the connecting body on the connecting sleeve can be used to hook onto the greenhouse door fabric or greenhouse door screen, thus preventing the greenhouse fabric from being punctured or damaged. The operation is simple, convenient, and ensures a long service life for the greenhouse fabric.
[0004] While conventional greenhouses are generally enclosed, they still require some ventilation. Limited ventilation helps lower the temperature and humidity, replenish carbon dioxide, promote air circulation, and ensure a better growing environment for plants. Furthermore, proper ventilation also reduces the risk of injury to personnel working inside the greenhouse.
[0005] In the aforementioned connection structure between the greenhouse and the canopy, when fixing the door canopy, the connecting sleeve needs to be snapped onto the greenhouse frame in a forward direction. The connector is located on the upper side of the connecting sleeve, and the upper edge of the door canopy extends over the forward-snap-on connecting sleeve and the connector, and is hooked onto the connector using an elastic rope. After the door canopy is fixed, the door canopy and the greenhouse canopy form a sealed state, therefore, an additional ventilation structure is required. Utility Model Content
[0006] This utility model addresses the shortcomings of existing technologies by providing a connection structure for greenhouse fabric, which enables multi-functional hanging of the greenhouse door and has the advantages of simple structure, convenient operation, and flexible use.
[0007] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:
[0008] A connection structure for a greenhouse canopy includes a film clamp for fixing the greenhouse frame and the main greenhouse. The outer wall of the film clamp is provided with a connecting component for fixing the door canopy. The connecting component includes an upper connector and a lower connector, which are respectively located at the upper end and the lower end of the outer wall of the film clamp. The door canopy can be selectively connected to the upper connector or the lower connector.
[0009] When the door canopy is connected to the upper connector, the door canopy and the main canopy form a sealed state; when the door canopy is connected to the lower connector, a gap is left between the upper end of the door canopy and the main canopy.
[0010] In the above-mentioned connection structure of greenhouse fabric, the lower end of the upper connector is connected to the film clamp and extends upward, and the upper end is bent and extends laterally; the upper end of the lower connector is connected to the film clamp and extends downward, and the lower end is bent and extends laterally.
[0011] In the above-mentioned connection structure of greenhouse fabric, the upper or lower connector is detachably connected to the door sash or strap; the lower end of the upper connector intersects with the outer wall of the film clamp to form a hanging structure, and the upper end forms an anti-detachment structure; the lower end of the lower connector intersects with the upper end to form a hanging structure, and the lower end forms an anti-detachment structure; the sash is preferably a metal sash, and the strap is preferably an elastic band.
[0012] In the above-mentioned connection structure of greenhouse fabric, the upper connector and the lower connector have the same shape and size; preferably, the upper connector and the lower connector are symmetrically arranged with respect to the film clamp.
[0013] In the above-mentioned connection structure of greenhouse fabric, both the upper connector and the lower connector include a vertical rod arranged radially along the film clamp and a horizontal rod arranged axially along the film clamp. One end of the vertical rod is integrated with the film clamp, and the other end is connected to the middle of the horizontal rod.
[0014] In the above-mentioned connection structure of greenhouse fabric, the upper connector and the lower connector are located at the same radial position of the film clamp.
[0015] In the above-mentioned connection structure of greenhouse fabric, the upper connector, the lower connector and the pressure film clamp are integrally injection molded.
[0016] In the above-mentioned connection structure of greenhouse fabric, the outer wall of the film clamp is provided with a number of reinforcing ribs distributed circumferentially, and the upper connector and the lower connector are arranged between the left and right sets of reinforcing ribs.
[0017] Compared with the prior art, this utility model has the following advantages:
[0018] This invention provides a connection structure for greenhouse fabric. It incorporates an upper and lower connector on a traditional film-pressing clamp. By selectively fixing the greenhouse door / cover to either connector, the greenhouse's state can be changed: when fixed to the upper connector, the greenhouse is sealed; when fixed to the lower connector, it is in a limited ventilation state, thus achieving multi-functional installation of the door / cover. This invention has a simple structure; switching states simply requires attaching the connecting structure to either the upper or lower connector of the same film-pressing clamp, eliminating the need to reinstall the clamp. This is very convenient and quick, effectively preventing seedling burn caused by delayed ventilation transitions. Attached Figure Description
[0019] Figure 1 This is a perspective view of the present invention;
[0020] Figure 2 This is the front view of this utility model;
[0021] Reference numerals: 1. Film clamp; 2. Upper connector; 3. Lower connector; 4. Vertical rod; 5. Horizontal rod. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-2 :
[0023] A connection structure for a greenhouse canopy includes a film clamp 1 for fixing the greenhouse frame and the main greenhouse. The outer wall of the film clamp 1 is provided with a connecting component for fixing the door canopy. The connecting component includes an upper connector 2 and a lower connector 3. The upper connector 2 and the lower connector 3 are respectively provided at the upper end and the lower end of the outer wall of the film clamp 1. The door canopy can be selectively connected to the upper connector 2 or the lower connector 3.
[0024] When the door canopy is connected to the upper connector 2, the door canopy and the main canopy form a sealed state; when the door canopy is connected to the lower connector 3, a gap is left between the upper end of the door canopy and the main canopy.
[0025] The method of use in this embodiment is as follows: First, cover the main shed onto the shed frame, then insert the film clamp 1 into the shed frame covered with the outer shed cloth in a predetermined direction, fix the shed frame and the main shed, and after fixing, the upper connecting piece 2 on the film clamp 1 is located at the upper end of the film clamp 1, and the lower connecting piece 3 is located at the lower end of the film clamp 1. When ensuring the greenhouse's insulation effect is crucial, the door frame is hung on the upper connector 2, with its upper edge extending beyond the film clamp 1 to form a semi-enclosed structure. It is then fixed to the upper connector 2. At this point, the door frame partially overlaps with the main greenhouse, forming a sealed structure, and the entire interior space of the greenhouse is sealed. When some ventilation is required, the door frame is hung on the lower connector 3. A gap is left between the upper end of the door frame and the main greenhouse, creating a ventilation gap and allowing the greenhouse to have some ventilation. When switching greenhouse states, simply remove the door frame's connecting structure from either the upper connector 2 or the lower connector 3, and then hang it on the lower connector 3 or the upper connector 2 of the same film clamp 1. This embodiment can also use a structure where part of the door frame is hung on the upper connector 2 and part on the lower connector 3 to reduce or adjust the ventilation gap.
[0026] To ensure the secure mounting effect, the specific structure of the connecting components in this embodiment is as follows: the lower end of the upper connecting member 2 is connected to the pressure film clamp 1 and extends upward, with the upper end bent and extending laterally; the upper end of the lower connecting member 3 is connected to the pressure film clamp 1 and extends downward, with the lower end bent and extending laterally. In this structure, the upper connecting member 2 or the lower connecting member 3 is detachably connected to the door frame's retaining ring or strap; the lower end of the upper connecting member 2 intersects with the outer wall of the pressure film clamp 1 to form a mounting structure, and the upper end forms an anti-detachment structure; the lower end of the lower connecting member 3 intersects with the upper end to form a mounting structure, and the lower end forms an anti-detachment structure; the retaining ring is preferably a metal retaining ring, and the strap is preferably an elastic band.
[0027] Preferably, the upper connector 2 and the lower connector 3 have the same shape and size; more preferably, the upper connector 2 and the lower connector 3 are symmetrically arranged with respect to the pressure clamp 1.
[0028] This embodiment further provides a better connecting component structure. Specifically, both the upper connecting member 2 and the lower connecting member 3 include a vertical rod 4 arranged radially along the pressure clamp 1 and a horizontal rod 5 arranged axially along the pressure clamp 1. One end of the vertical rod 4 is integrally connected to the pressure clamp 1, and the other end is connected to the middle of the horizontal rod 5. Preferably, the upper connecting member 2 and the lower connecting member 3 are located at the same radial position of the pressure clamp 1.
[0029] To facilitate production and make the structure more robust, the upper connector 2, the lower connector 3, and the pressure clamp 1 are integrally injection molded.
[0030] In order to increase the structural strength of the pressure clamp 1 and ensure the stability of the hanging structure, a number of reinforcing ribs distributed circumferentially are provided on the outer wall of the pressure clamp 1 at intervals, and the upper connector 2 and the lower connector 3 are arranged between the left and right sets of reinforcing ribs.
[0031] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.
Claims
1. A connecting structure of a greenhouse cloth, comprising a fixed canopy frame and a film pressing clamp (1) of a main canopy, an outer wall of the film pressing clamp (1) is provided with a connecting assembly for fixing a canopy, characterized in that, The connecting assembly comprises an upper connecting piece (2) and a lower connecting piece (3), which are arranged at the upper end and the lower end of the outer wall of the film pressing clamp (1) respectively, and the door shed is selectively connected with the upper connecting piece (2) or the lower connecting piece (3). When the door shed is connected with the upper connecting piece (2), the door shed and the main shed form a closed state; when the door shed is connected with the lower connecting piece (3), a gap is left between the upper end of the door shed and the main shed.
2. The connecting structure of the greenhouse cloth according to claim 1, wherein The lower end of the upper connecting piece (2) is connected with the film pressing clamp and extends upward, the upper end is bent and extends in the transverse direction, the upper end of the lower connecting piece (3) is connected with the film pressing clamp and extends downward, and the lower end is bent and extends in the transverse direction.
3. The connecting structure of the greenhouse cloth according to claim 2, wherein The upper connecting piece (2) or the lower connecting piece (3) is detachably connected with the clasp or the band of the door shed; the lower end of the upper connecting piece (2) forms a hanging structure at the intersection with the outer wall of the film pressing clamp (1), and the upper end forms an anti-falling structure; the lower end of the lower connecting piece (3) forms a hanging structure at the intersection with the upper end, and the lower end forms an anti-falling structure.
4. The connecting structure of the greenhouse cloth according to claim 2, wherein The upper connecting piece (2) and the lower connecting piece (3) have the same shape and size.
5. The connecting structure of the greenhouse according to claim 4, wherein The upper connecting piece (2) and the lower connecting piece (3) each comprise a vertical rod (4) arranged in the radial direction of the film pressing clamp (1) and a horizontal rod (5) arranged in the axial direction of the film pressing clamp (1), one end of the vertical rod (4) is connected with the film pressing clamp (1) integrally, and the other end is connected with the middle part of the horizontal rod (5).
6. The connecting structure of the greenhouse according to claim 4, wherein The upper connecting piece (2) and the lower connecting piece (3) are located at the same radial position of the film pressing clamp (1).
7. The connecting structure of the greenhouse according to claim 4, wherein The upper connecting piece (2), the lower connecting piece (3) and the film pressing clamp (1) are integrally injection molded.
Citation Information
Patent Citations
Fixing buckle for connecting greenhouse and greenhouse cloth
CN221689474U