A type of exposed ceiling joist connection structure

Abstract

This utility model discloses a connection structure for exposed ceiling joists, including a main joist and a secondary joist, which are fixedly connected by a fastener assembly. It also includes a connecting buckle for connecting to the secondary joist. The connecting buckle has a tongue at the top and a hook at the bottom that engages with a groove. The upper side of the main joist has a groove that mates with the tongue, which is inserted into the groove. This utility model uses the connecting buckle to achieve a precise positioning connection between the secondary and main joists, ensuring accurate alignment and effectively reducing the gap between them. Furthermore, using the connecting buckle, the secondary joist only needs to be cut along its length, avoiding the need to machine a stepped edge at its end.

Description

Technical Field

[0001] This utility model relates to the field of building decoration, specifically to a connection structure for exposed ceiling joists. Background Technology

[0002] Exposed grid ceilings are aesthetically pleasing and easy to install and remove, making them widely used in architectural decoration. The joists in an exposed grid ceiling are typically arranged in a rectangular grid pattern, consisting of multiple long main joists and multiple shorter secondary joists. The cross-section of the joists is generally inverted T-shaped. The ceiling panels rest within the grid of the joist frame, with the edges of the panels resting on the flanges of the joists.

[0003] like Figure 1 and Figure 2 As shown, the current connection structure between the secondary keel 2 and the main keel 1 requires machining a stepped step 5 at the end of the secondary keel 2 so that it can rest on the flange edge 4 of the main keel 1, ensuring that the bottom surfaces of the main and secondary keels remain flush. Finally, the two are fixed together by the fastener assembly 3. However, the above connection structure has the following problems: 1. Due to the lack of stable positioning constraints between the main and secondary keels, large splicing gaps are easily generated between them, which not only affects the overall aesthetics of the ceiling, but also makes it difficult to guarantee the accuracy of the keel frame after installation, thus affecting the installation and fixation of the ceiling panel; 2. Since the length of the secondary keel is uncertain, it needs to be processed on-site, which means that the stepped step at the end of the secondary keel also needs to be processed on-site. This operation greatly reduces the installation efficiency and convenience. Utility Model Content

[0004] Based on this, and in response to the aforementioned technical problems, this utility model provides a connection structure for exposed ceiling joists.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A surface-mounted ceiling joist connection structure includes a main joist and a secondary joist perpendicular to the side of the main joist. A flange edge protruding outward from the lower part of the side of the main joist is close to the front end face of the secondary joist. The main joist and the secondary joist are fixed together by a fastener assembly. The structure also includes a connecting buckle connected to the front end face of the secondary joist. The top of the flange edge has an upward groove. The lower part of the connecting buckle has a hook that fastens into the groove, and the upper part has a tongue. The upper part of the side of the main joist has a groove that mates with the tongue, and the tongue is inserted into the groove.

[0007] Using the above technical solution, the front end face of the secondary keel directly abuts against the groove of the main keel, and the secondary keel and the main keel are positioned and connected by a connecting buckle. In this way, the secondary keel only needs to be cut along its length, eliminating the need for processing stepped steps at the ends, thus simplifying the overall processing flow, reducing processing difficulty, and improving efficiency. Secondly, the connecting buckle is fixed to the secondary keel, and the tongue is engaged in the groove of the main keel, providing a weak connecting force between the main and secondary keels before the fastener components are installed, thereby preventing the secondary keel from detaching from the main keel due to upward tilting. Furthermore, the hook engages with the groove of the main keel, ensuring accurate connection between the secondary and main keels, while preventing the expansion of the splicing gap between the main and secondary keels due to external forces or installation errors, thus improving the overall stability of the keel frame structure.

[0008] In a specific embodiment of this utility model: the connecting buckle is fixed to the secondary keel by a fixing bolt. The cavity of the secondary keel is provided with bolt holes. The connecting buckle has an assembly hole at the position corresponding to the bolt hole. The end of the fixing bolt passes through the assembly hole and is tightened in the bolt hole.

[0009] In a specific embodiment of this utility model, the contact surface between the hook and the groove is composed of an inclined surface and a horizontal surface connected to the upper edge of the inclined surface. With this structure, when the horizontal surface of the hook contacts the groove of the main keel, it can position the main keel and the secondary keel in the vertical direction, ensuring that their bottom surfaces remain flush. Simultaneously, it allows the load borne by the secondary keel to be transferred to the main keel, with the main keel sharing the load, preventing the secondary keel from bending, breaking, or falling off due to excessive force. Furthermore, the inclined surface contact not only makes assembly easier but also reduces gaps generated during assembly, making the overall structure look neater and improving visual aesthetics.

[0010] In a specific embodiment of this utility model: the connecting buckle has two sets of positioning bosses arranged on opposite sides of the secondary keel. Each set of positioning bosses consists of two positioning bosses distributed vertically. The secondary keel has horizontal connecting parts on both sides of its threaded hole. During assembly, the two positioning bosses in the same set are respectively engaged with the upper and lower sides of the corresponding connecting parts. By using these positioning bosses, when the connecting buckle is connected and fixed to the secondary keel, it can be ensured that the two maintain the correct relative position, thereby making the assembly process more convenient and efficient.

[0011] In summary, this invention uses connecting buckles to position and connect the secondary and main keels, ensuring accurate connection and effectively reducing the gaps between them, thereby improving the overall stability of the keel frame structure. Furthermore, using connecting buckles eliminates the need for length-direction cutting of the secondary keel, eliminating the need for stepped processing at its ends, thus simplifying the manufacturing process, reducing processing difficulty, and improving efficiency. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 It is the connection structure between the secondary keel and the main keel in the existing technology;

[0014] Figure 2 This shows the stepped steps processed at the end of the secondary keel;

[0015] Figure 3 This is a schematic diagram of the structure of a visible ceiling joist connection structure according to this utility model;

[0016] Figure 4 This is a left view of the connection structure of this utility model;

[0017] Figure 5 This is a top view of the connection structure of this utility model;

[0018] Figure 6 This is a structural schematic diagram of the connecting buckle of this utility model;

[0019] Figure 7 This is a schematic diagram of the main keel structure of this utility model;

[0020] Figure 8 This is a schematic diagram of the structure of the secondary keel of this utility model;

[0021] Figure 9 This illustrates a main keel with a trapezoidal groove structure and no additional grooves;

[0022] Figure 10 This illustrates a main keel with a threaded tooth-shaped groove and no additional groove;

[0023] Figure 11 This illustrates a main keel with a threaded tooth-shaped groove and additional grooves. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 3 , Figure 4 and Figure 5As shown, this utility model is a surface-mounted ceiling joist connection structure, including a main joist 10 and a secondary joist 12 perpendicular to the side of the main joist 10. The flange edge 15 of the main joist 10 is close to the front end face of the secondary joist 12. The main joist 10 and the secondary joist 12 are fixed together by a fastener assembly 13.

[0026] After assembly, the fastener assembly 13 ensures that the connection strength between the main and secondary keels meets the requirements for subsequent ceiling panel installation. The fastener assembly 13 includes fasteners 131 and bolts 132. Fasteners 131 come in various types, including Phillips, T-shaped, L-shaped, and slotted, and are readily available on the market. The variety of fastener types 131 greatly facilitates on-site construction; workers can simply select the appropriate fastener type based on actual connection needs, effectively simplifying the construction process.

[0027] like Figure 7 and Figure 8 As shown, both the main keel 10 and the secondary keel 12 are made of the same profile, with an overall inverted T-shape. Both have a structural groove 14 at the top for installation and fixing with the fastener assembly 13, and flange edges 15 protruding outwards from the lower part of both sides for installing the ceiling panel. Among them, as shown... Figure 9 and Figure 10 As shown, the structural groove 14 can be trapezoidal or threaded. For example... Figure 5 As shown, during assembly, each extension arm 133 of the fastener 131 is inserted into the top position of the corresponding main and secondary keels, and the ends of the bolts 132 are passed through the through holes of the corresponding extension arms 131 and tightened into the corresponding structural grooves 14, thereby fixing the main and secondary keels together. Figure 7 and Figure 11 As shown, additional grooves 16 are provided on the bottom surfaces of the main keel 10 and the secondary keel 12. These additional grooves 16 can be used to install additional devices, such as cable trays, under the suspended ceiling. Of course, as... Figure 9 and Figure 10 As shown, the main keel 10 and secondary keel 12 can also be set without additional slots.

[0028] It also includes a connecting buckle 20 located at the junction of the main keel 10 and the secondary keel 12, which serves for positioning and connection. This connecting buckle 20 is fixed to the front end face of the secondary keel 12 by fixing bolts 25, and includes a vertical portion 21 located in the middle, a tongue 22 connected to the upper edge of the vertical portion 21, and a hook 23 connected to the lower edge of the vertical portion 21. Bolt holes 122 are provided in the cavity 121 of the secondary keel 12, and mounting holes 123 are provided in the vertical portion 21 corresponding to the bolt holes 122. The upper part of the sides of the main keel 10 has grooves 17 that mate with the tongue 22. The top of the flange edge 15 has an upward groove 151. During assembly, the vertical part 21 of the connecting buckle 20 contacts the front end face of the secondary keel 12, the hook 23 hooks the groove 151 of the main keel 10, the tongue 22 is inserted into the groove 17, the end of the fixing bolt 25 passes through the assembly hole 123 and is tightened in the bolt hole 122, thus fixing the connecting buckle 20 to the secondary keel 12.

[0029] During assembly, the tongue 22 of the connecting buckle 20 engages in the groove 17 of the main keel, providing a weak connection between the main and secondary keels before the fastener assembly 13 is installed, effectively preventing the secondary keel 12 from tilting upwards and detaching from the main keel 10. Simultaneously, the hook 23 engages with the groove 151 of the main keel 10, ensuring accurate connection between the secondary keel 12 and the main keel 10, and preventing the expansion of the splicing gap between the main and secondary keels due to external forces or installation errors, thus improving the overall stability of the keel frame structure. Furthermore, the secondary keel only needs to be cut to length, eliminating the need for stepped processing at the ends, simplifying the manufacturing process and reducing processing difficulty.

[0030] In this embodiment, the contact surface between the hook 23 and the groove 151 is composed of an inclined surface 231 and a horizontal surface 232 connected to the upper edge of the inclined surface 231. With this structure, when the horizontal surface of the hook contacts the groove of the main keel, it can position the main keel and the secondary keel in the vertical direction, ensuring that their bottom surfaces remain flush. Simultaneously, it allows the load borne by the secondary keel to be transferred to the main keel, allowing the main keel to "share" the load and preventing the secondary keel from bending, breaking, or falling off due to excessive force. Furthermore, the inclined surface contact not only makes assembly easier but also reduces gaps generated during assembly, making the overall structure look neater and improving visual aesthetics.

[0031] like Figure 6 and Figure 8As shown, in this embodiment, the vertical part 21 has positioning boss groups 26 arranged on both sides of its side opposite to the secondary keel 12. Each positioning boss group 26 consists of two positioning bosses 261 distributed vertically. The threaded hole 122 of the secondary keel 12 has horizontal connecting parts 124 on both sides. During assembly, the two positioning bosses 261 of the same group are respectively engaged on the upper and lower sides of the corresponding connecting parts 124. In this way, when the connecting buckle is connected and fixed to the secondary keel, it can ensure that the two maintain the correct relative position, thereby making the entire assembly process more convenient and efficient.

[0032] The above describes a surface-mounted ceiling keel connection structure according to this utility model. During assembly, the vertical part of the connecting buckle 20 is aligned with the end face of the secondary keel 2, and the positioning boss assembly 26 is used for quick and precise positioning. Then, the connecting buckle 20 is connected and fixed to the secondary keel 12 using the fixing bolts 25. Subsequently, the hook 23 of the connecting buckle 20 is hooked into the groove 151 of the main keel 10, and downward pressure is applied to press the secondary keel 12 downward so that the bottom planes of the main and secondary keels are flush. During this process, the latch 22 of the connecting buckle 20 enters the groove 17 of the main keel 10. Then, the secondary keel 12 can be slid along the length of the main keel 10 to adjust to the required relative position. Subsequently, the secondary keel 12 is fixedly connected to the main keel 10 using the fastener assembly 13 to form a whole. Repeating the above process completes the assembly of the entire keel frame.

[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A ceiling joist connection structure, comprising a main joist and a secondary joist perpendicular to the side of the main joist, wherein a flange edge protruding outward from the lower part of the side of the main joist is close to the front end face of the secondary joist, and the main joist and the secondary joist are fixed together by a fastener assembly, characterized in that, It also includes a connecting buckle that connects to the front end face of the secondary keel. The top of the flange edge has an upward groove. The lower part of the connecting buckle has a hook that fastens onto the groove, and the upper part has a tongue. The upper side of the main keel has a groove that mates with the tongue, and the tongue is inserted into the groove.

2. The exposed ceiling joist connection structure according to claim 1, characterized in that, The connecting buckle is fixed to the secondary keel by fixing bolts. The cavity of the secondary keel is provided with bolt holes. The connecting buckle has an assembly hole at the position corresponding to the bolt hole. The end of the fixing bolt passes through the assembly hole and is tightened in the bolt hole.

3. The exposed ceiling joist connection structure according to claim 1, characterized in that, The contact surface between the hook and the groove is composed of an inclined surface and a horizontal surface connected to the upper edge of the inclined surface.

4. The exposed ceiling joist connection structure according to claim 2, characterized in that, The connecting buckle has two sets of positioning bosses on the side opposite to the secondary keel. Each set of positioning bosses consists of two positioning bosses distributed on the upper and lower sides. The threaded hole of the secondary keel has horizontal connecting parts on both sides. During assembly, the two positioning bosses in the same set are respectively locked on the upper and lower sides of the corresponding connecting parts.

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