A cassette stud for mounting gypsum plasterboard

Abstract

The utility model discloses a cassette keel for installing paper -faced gypsum board belongs to building suspended ceiling technical field, including main keel, auxiliary keel and boom, and buckle assembly and fixed component, the fixed groove is seted up in the main keel top, and the side wall is seted up with the clamping slot, the buckle assembly is arranged in the inside of auxiliary keel end part, and it includes the card tongue, elastic card, connecting piece and arc piece, for when the auxiliary keel is inserted into the main keel clamping slot, through arc piece pressure and drive elastic card deformation to produce the sustained pre -tightening force, realize the quick elastic self -locking and positioning of auxiliary keel, the fixed component sets up in the connection node outside of main keel and auxiliary keel. The utility model's double locking structure has improved the anti -loosening and anti -vibration ability of keel connection node significantly, has guaranteed the long -term structural stability and reliability of suspended ceiling, has reserved the convenience of quick installation and fine adjustment of " cassette " connection simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of building ceiling technology, and in particular to a clip-on keel for installing paper-faced gypsum board. Background Technology

[0002] In the field of architectural decoration, ceiling systems are an important component of interior design, primarily used to conceal pipes, beautify spaces, and improve acoustic performance. Paper-faced gypsum board, due to its lightweight, fire-resistant, and sound-insulating advantages, has become a commonly used surface material for ceiling systems. The keel, as the supporting framework of the ceiling, directly affects the flatness, stability, and construction efficiency of the ceiling through its structural design and installation method.

[0003] Currently, common ceiling keel types mainly include U-shaped keels, T-shaped keels, and light steel keels. U-shaped keels are fixed with screws, requiring multiple adjustments during installation and taking a long time. T-shaped keels use snap-fit ​​connections, but their stability is poor and they are prone to loosening. Light steel keels, while having high strength, are heavy and inconvenient to install. In recent years, with the promotion of prefabricated buildings, higher requirements have been placed on the rapid installation and stability of keels.

[0004] Specifically, this single elastic snap-fit ​​structure provides limited preload and insufficient connection rigidity. After the ceiling system is installed and bears the weight of the gypsum board, especially when facing long-term gravitational creep, expansion and contraction caused by temperature changes, and slight vibrations caused by external environmental factors (such as closing doors or walking upstairs), this non-rigid connection point is prone to slight loosening and displacement.

[0005] Over time, this loosening will worsen, eventually compromising the flatness of the keel frame and causing quality problems such as cracking at the plasterboard joints, seriously affecting the safety and lifespan of the ceiling. Therefore, how to provide a ceiling keel structure that retains the advantages of convenient and easy-to-adjust "clip-on" keel installation while achieving rigid locking and ensuring long-term stable and reliable connection nodes is a technical problem that urgently needs to be solved in this field.

[0006] Therefore, this utility model proposes a clip-on keel for installing paper-faced gypsum board to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a clip-on keel for installing paper-faced gypsum board, aiming to improve the existing technology where the single elastic clip-on structure for installing paper-faced gypsum board is simple and easy to install, but the connection rigidity is insufficient, and it is prone to loosening and displacement under long-term load and vibration, resulting in ceiling cracking and low reliability.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a clip-on keel for installing paper-faced gypsum board, comprising: a main keel, an auxiliary keel, and a hanger rod, wherein a fixing groove is provided on the top of the main keel, a clip groove is provided on the side wall of the main keel, the end of the auxiliary keel is clipped into the clip groove of the main keel, and the hanger rod passes through the fixing groove of the main keel, and further comprises a buckle assembly and a fixing assembly, wherein the buckle assembly is disposed inside the end of the auxiliary keel; The buckle assembly includes a latch, an elastic clip, a connecting piece, and an arc-shaped piece. The latch is disposed at the end of the auxiliary keel, and the elastic clip and the arc-shaped piece are connected through the connecting piece. The fixing assembly includes a first fixing plate, a second fixing plate, a fixing bolt, and a locking nut. The first fixing plate and the second fixing plate are respectively attached to both sides of the main keel. The fixing bolt passes through the first fixing plate, the main keel, and the second fixing plate in sequence and is threadedly connected to the locking nut.

[0009] Preferably, the main keel is a U-shaped groove structure, the fixing groove is formed on the top of the U-shaped groove structure, and the slot is formed on the two side walls of the U-shaped groove structure.

[0010] Preferably, the auxiliary keel is a hollow rectangular tube structure, and the buckle assembly is housed inside it.

[0011] Preferably, the outer convex side of the arc-shaped piece abuts against the inner wall of the slot when the auxiliary keel is inserted into the slot.

[0012] Preferably, the elastic card is an elastic element, and when the arc-shaped piece is compressed, the pressure is transmitted through the connecting piece and causes the elastic card to undergo elastic deformation.

[0013] Preferably, when the auxiliary keel is fully inserted into the slot, the elastic force released by the elastic card generates a pre-tightening force on the inner wall of the slot via the connecting piece and the arc-shaped piece.

[0014] Preferably, the first fixing plate and the second fixing plate move toward each other under the tightening action of the locking nut to clamp the side wall of the main keel, and the auxiliary keel is pressed and fixed inside by the side wall of the main keel.

[0015] Preferably, both the first fixing plate and the second fixing plate are provided with through holes for the fixing bolts to pass through, and bolt holes are also provided at corresponding positions on the side wall of the main keel.

[0016] This utility model has the following beneficial effects: 1. In this utility model, a buckle assembly consisting of a latch, an elastic clip, a connecting piece, and an arc-shaped piece is provided inside the end of the auxiliary keel. By utilizing its elastic deformation and rebound force, the auxiliary keel can achieve rapid elastic self-locking when inserted into the main keel. This solves the problems of cumbersome keel installation steps, reliance on tools, and low installation efficiency in the prior art. It simplifies the installation steps and enables quick manual installation and positioning. Furthermore, this elastic connection allows for convenient fine-tuning of the frame before final locking, significantly improving construction efficiency and installation accuracy.

[0017] 2. This utility model, by adding a fixing component consisting of a first fixing plate, a second fixing plate, fixing bolts, and locking nuts to the elastic self-locking structure, externally clamps and rigidly locks the connection nodes of the main keel and auxiliary keel. This solves the problems of existing technologies where keel connection points rely on only a single connection method, resulting in structural instability and easy loosening, displacement, or even cracking after long-term load-bearing. It achieves a dual locking effect. This structure combines elastic pre-tightening with rigid locking, enhancing the vibration resistance and loosening resistance of the connection nodes, and ensuring that the entire ceiling frame can maintain a high degree of structural stability and reliability when bearing the weight of gypsum board for a long time. Attached Figure Description

[0018] Figure 1 This is a perspective view of a clip-on keel for installing paper-faced gypsum board according to the present invention. Figure 2 This is a schematic diagram of an auxiliary keel for installing paper-faced gypsum board using a clip-on keel. Figure 3 This is a schematic diagram of the latch of a clip-type keel for installing paper-faced gypsum board according to the present invention. Figure 4 This is a schematic diagram of an elastic card for installing paper-faced gypsum board using a card-type keel, as proposed in this utility model. Figure 5 This is a schematic diagram of the first fixing plate of a clip-type keel for installing paper-faced gypsum board, as proposed in this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Main keel; 2. Hanger rod; 3. Fixing groove; 4. Clip groove; 5. Auxiliary keel; 6. Clip assembly; 601. Clip tongue; 602. Elastic clip; 603. Connecting piece; 604. Arc-shaped piece; 7. Fixing assembly; 701. First fixing plate; 702. Second fixing plate; 703. Fixing bolt; 704. Locking nut. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0021] Reference Figures 1-5 This utility model provides a clip-on keel for installing paper-faced gypsum board, which aims to solve the problems of insufficient keel connection reliability and cumbersome installation and adjustment process in the prior art.

[0022] Specifically, it includes a main keel 1 and an auxiliary keel 5 whose ends are snapped into the main keel 1. The snap-fit ​​keel also includes a hanger 2 that passes through the main keel 1. The main keel 1 serves as the load-bearing foundation of the ceiling frame and is suspended from the building roof through the hanger 2. The auxiliary keel 5 is used to connect adjacent main keels 1 to jointly construct a stable and flat grid-like ceiling frame.

[0023] It also includes a snap-fit ​​assembly 6 and a fixing assembly 7. The snap-fit ​​assembly 6 is located inside the end of the auxiliary keel 5 to achieve quick and elastic self-locking between the auxiliary keel 5 and the main keel 1. The snap-fit ​​assembly 6 includes a snap tongue 601, an elastic clip 602, a connecting piece 603, and an arc-shaped piece 604. The snap tongue 601 is located at the end of the auxiliary keel 5 and is used to insert into and initially engage with the slot 4 on the main keel 1. The elastic clip 602 and the arc-shaped piece 604 are connected as a whole by the connecting piece 603, and a pre-tightening force is generated through deformation and rebound during installation. The fixing assembly 7 is used to finally rigidly lock the elastically connected nodes. The fixing component 7 includes a first fixing plate 701, a second fixing plate 702, a fixing bolt 703, and a locking nut 704. During installation, the first fixing plate 701 and the second fixing plate 702 are respectively attached to both sides of the main keel 1 to form a clamping structure for the main keel 1. The fixing bolt 703 passes through the first fixing plate 701, the main keel 1, and the second fixing plate 702 in sequence, and is finally threadedly connected to the locking nut 704 to apply a tightening force. The top of the main keel 1 is provided with a fixing groove 3 for the hanger 2 to pass through, and the side wall of the main keel 1 is provided with a slot 4 for the end of the auxiliary keel 5 and the latch 601 to be inserted.

[0024] To make the main keel 1 more stable and facilitate component installation, the overall cross-section of the main keel 1 is a U-shaped groove structure. This U-shaped groove structure specifically includes a horizontal bottom and two side walls extending vertically upward from both sides of the bottom. This open groove structure facilitates the installation of the hanger 2 and the insertion of the auxiliary keel 5. The two side walls provide sufficient rigidity and a plane for opening the slot 4. The fixing slot 3 is specifically opened at the top of the U-shaped groove structure. Here, the top can be understood as the reinforcing flange formed by the horizontal inward bending of the top edges of the two side walls. Multiple fixing slots 3 are evenly opened on the reinforcing flange to increase the overall strength of the main keel 1 and provide a stable suspension point for the connection of the hanger 2. The slot 4 is precisely opened on the two side walls of the U-shaped groove structure. The outline shape and size of the slot 4 are adapted to the end shape of the auxiliary keel 5, ensuring that the auxiliary keel 5 can be smoothly inserted and obtain initial guidance and positioning.

[0025] To facilitate the housing of the snap-fit ​​assembly 6 and achieve a lightweight design, the auxiliary keel 5 has a hollow rectangular tube structure. This tubular structure effectively reduces its weight while ensuring sufficient bending and torsional stiffness, greatly facilitating the handling and operation of installation workers at heights. More importantly, the hollow rectangular tube structure of the auxiliary keel 5 provides an independent and protected internal space. All components of the snap-fit ​​assembly 6, including the elastic clip 602, connecting piece 603, and arc-shaped piece 604, are completely housed in the cavity inside the auxiliary keel 5, with only the latch 601 protruding from the end. This built-in design prevents the snap-fit ​​assembly 6 from being damaged or deformed by external collisions during transportation, handling, and installation, ensuring the reliability of its elastic self-locking function.

[0026] The convex side of the arc-shaped piece 604 is designed as a smooth, rounded transition surface. When the auxiliary keel 5 is pushed into the slot 4 of the main keel 1, the convex side of the arc-shaped piece 604 will first contact and abut against the inner wall of the slot 4, and contract inward under this pressure. During this process, the elastic card 602, which serves as an elastic energy storage element, is designed as a metal elastic element with a high resilience coefficient. When the arc-shaped piece 604 is compressed, the pressure is directly transmitted through the connecting piece 603, which serves as a force transmission rod, and acts on the elastic card 602, causing it to undergo bending elastic deformation, thus converting the kinetic energy applied during installation into... The elastic potential energy is stored. When the auxiliary keel 5 is fully pushed into the predetermined depth of the slot 4, the arc-shaped piece 604 passes the limit point or the narrowest point of the inner wall of the slot 4. The squeezing force from the inner wall of the slot 4 is reduced sharply, and the elastic potential energy stored in the elastic piece 602 is released. This rebound force acts in the opposite direction on the inner wall of the slot 4 through the connecting piece 603 and the arc-shaped piece 604, thereby generating a continuous and stable pre-tightening force. This pre-tightening force ensures that the main keel 1 and the auxiliary keel 5 can be tightly fitted without any tools, completing the rapid initial fixation, while also allowing for fine adjustment when a certain external force is applied.

[0027] To achieve a final, high-strength rigid lock, when a tightening force is applied by rotating the locking nut 704, the first fixing plate 701 and the second fixing plate 702 will move towards each other under the axial tension of the fixing bolt 703 to clamp the two side walls of the main keel 1. The inner surfaces of the first fixing plate 701 and the second fixing plate 702 are preferably flat surfaces to ensure that a uniform and huge surface contact pressure is generated between them and the side walls of the main keel 1. This pressure is transmitted directly inward through the rigid side walls of the main keel 1 and strongly compresses the end of the auxiliary keel 5 that has been inserted into the main keel 1. This causes the tube wall of the auxiliary keel 5 and its internal snap-fit ​​assembly 6 to be pressed together and firmly locked in the slot 4, forming a rigid connection relying on huge static friction and extrusion force. In order to ensure the effective application of this fastening force, the first fixing plate 701 and the second fixing plate 702 are provided with through holes for the fixing bolts 703 to pass through. In addition, bolt holes of the same size and position are pre-opened on the side wall of the main keel 1 at the corresponding positions, thereby ensuring that the fixing bolts 703 can pass through all the components that need to be connected without obstruction, ensuring the integrity of the entire locking structure and the effective transmission of force.

[0028] Working principle: During installation, the main keel 1 is first suspended and fixed by passing the hanger rod 2 through the fixing groove 3 at the top of the main keel 1, and multiple main keels 1 are modularly arranged on the building roof. Then, the two ends of the auxiliary keel 5 are inserted into the side openings of the main keel 1 respectively. Through the coordinated action of the snap-fit ​​component 6 set inside the auxiliary keel 5 and the fixing component 7 installed outside the connection point, the main keel 1 and auxiliary keel 5 are quickly assembled into a stable and flat ceiling grid frame for subsequent installation of gypsum board.

[0029] When installing the auxiliary keel 5, the operator aligns its end tab 601 with and inserts it into the slot 4 on the main keel 1. During insertion, the snap-fit ​​assembly 6 inside the auxiliary keel 5 activates, its arc-shaped piece 604 contacts and is compressed against the inner wall of the slot 4 on the main keel 1. This pressure is transmitted to the elastic clip 602 through the connecting piece 603, causing the elastic clip 602 to deform elastically. Once the auxiliary keel 5 is fully inserted, the elastic potential energy released by the elastic clip 602 generates a continuous preload force through the connecting piece 603 and the arc-shaped piece 604, ensuring a tight fit between the tab 601 and the slot 4. This elasticity ensures that the connection remains secure and also allows the installer to apply external force for minor adjustments as needed to meet the flatness requirements of the ceiling.

Claims

1. A clip-on keel for installing paper-faced gypsum board, comprising: The main keel (1), auxiliary keel (5) and hanger (2) are provided. The top of the main keel (1) is provided with a fixing groove (3). The side wall of the main keel (1) is provided with a slot (4). The end of the auxiliary keel (5) is engaged in the slot (4) of the main keel (1). The hanger (2) passes through the fixing groove (3) of the main keel (1). The main keel (1) is characterized by further including a buckle assembly (6) and a fixing assembly (7). The buckle assembly (6) is disposed inside the end of the auxiliary keel (5). The buckle assembly (6) includes a latch (601), an elastic clip (602), a connecting piece (603), and an arc-shaped piece (604). The latch (601) is located at the end of the auxiliary keel (5), and the elastic clip (602) and the arc-shaped piece (604) are connected by the connecting piece (603). The fixing component (7) includes a first fixing plate (701), a second fixing plate (702), a fixing bolt (703), and a locking nut (704). The first fixing plate (701) and the second fixing plate (702) are respectively attached to both sides of the main keel (1). The fixing bolt (703) passes through the first fixing plate (701), the main keel (1), and the second fixing plate (702) in sequence, and is threadedly connected to the locking nut (704).

2. The clip-on keel for installing paper-faced gypsum board according to claim 1, characterized in that, The main keel (1) is a U-shaped groove structure, the fixing groove (3) is opened on the top of the U-shaped groove structure, and the slot (4) is opened on the two side walls of the U-shaped groove structure.

3. The clip-on keel for installing paper-faced gypsum board according to claim 1, characterized in that, The auxiliary keel (5) is a hollow rectangular tube structure, and the buckle assembly (6) is housed inside it.

4. The clip-on keel for installing paper-faced gypsum board according to claim 1, characterized in that, The outer convex side of the arc-shaped piece (604) abuts against the inner wall of the slot (4) when the auxiliary keel (5) is inserted into the slot (4).

5. The clip-on keel for installing paper-faced gypsum board according to claim 4, characterized in that, The elastic card (602) is an elastic element. When the arc-shaped piece (604) is compressed, the pressure is transmitted through the connecting piece (603) and causes the elastic card (602) to undergo elastic deformation.

6. The clip-on keel for installing paper-faced gypsum board according to claim 5, characterized in that, When the auxiliary keel (5) is fully inserted into the slot (4), the elastic force released by the elastic card (602) generates a pre-tightening force on the inner wall of the slot (4) through the connecting piece (603) and the arc-shaped piece (604).

7. The clip-on keel for installing paper-faced gypsum board according to claim 1, characterized in that, The first fixing plate (701) and the second fixing plate (702) move toward each other under the fastening action of the locking nut (704) to clamp the side wall of the main keel (1) and the auxiliary keel (5) inside it is pressed and fixed by the side wall of the main keel (1).

8. The clip-on keel for installing paper-faced gypsum board according to claim 1, characterized in that, Both the first fixing plate (701) and the second fixing plate (702) are provided with through holes for the fixing bolts (703) to pass through, and bolt holes are also provided on the side wall of the main keel (1) at the corresponding positions.

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