Assembly type ceiling joist mounting fastener
The right-angle C-shaped blocks and hook-and-slot structure eliminate the need for drilling holes to connect the main and secondary keels, solving the cumbersome bolt and nut fixing problem in existing technologies and achieving efficient and stable keel installation.
Patent Information
- Application Number
- CN202422786379.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-15
AI Technical Summary
When installing existing ceiling joists, the connection between the main joists and secondary joists requires drilling connection holes on each side and using bolts and nuts for fixing, which is cumbersome and inefficient.
The first component is a right-angled C-shaped block, which is combined with a second component consisting of a card seat, a hook, and an elastic telescopic structure. The main keel and the secondary keel are connected through slots and through holes. The elastic telescopic structure and the limiting structure are used to achieve fixation without drilling.
It simplifies the bolt and nut tightening operation, improves the fixing efficiency of the keel frame, reduces construction time, and ensures a stable connection between the main keel and the secondary keel.
Smart Images
Figure CN223497419U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building decoration, and in particular to a prefabricated ceiling keel installation fastener. Background Technology
[0002] Ceiling joists are the ceiling frames we often see in architectural decoration, especially decorative ceilings. They are made by using joists as a framework and then covering them with plasterboard. Joists are the main material used for suspended ceilings, made of light steel. Ceiling joists typically include main joists and secondary joists. The main joists bear the weight of the ceiling and must be stable and flat; otherwise, they are not suitable for load-bearing installation and need to be fixed with expansion bolts when installed on the building foundation. Secondary joists can be exposed or concealed; they are mainly used to suspend plasterboard and can also be called horizontal bracing joists.
[0003] When installing existing ceiling joists, the main joists and secondary joists are usually connected using fasteners. This requires opening connection holes in the main joists and secondary joists, and then using bolts and nuts to secure the connection with corresponding through holes on the fasteners. In building decoration, the bolt and nut tightening operation is cumbersome and the construction is slow. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a prefabricated ceiling keel installation fastener that eliminates the need for drilling connection holes and reduces the bolt and nut tightening work.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is a prefabricated ceiling keel installation fastener, including a first component for fixing the main keel, a second component for fixing the secondary keel, and a hanger rod;
[0006] The first component is a right-angled C-shaped block, which includes a fixedly connected upper plate, lower plate, and side plate. The lower end of the hanger is vertically fixed above the upper plate. The upper end of the hanger is used to detachably connect with an expansion bolt fixed to the top plate.
[0007] The second component includes a card holder, a hook, and an elastic telescopic structure connecting the card holder and the hook; the upper plate has a through slot, and the card holder is fitted into the slot; the lower plate has a through hole for the hook to pass through, and a limiting structure supporting the hook in the vertical direction is provided on the side of the lower plate; the secondary keel is embedded in the hook groove of the hook.
[0008] The main keel is clamped between the side plate of the first component and the hook side wall of the second component.
[0009] The beneficial effects of the above technical solution are as follows: the combination of the first and second components can fix the main keel and the secondary keel. The upper and lower plates of the first component fix the position of the main keel in the vertical direction. At the same time, the main keel is clamped between the side plate of the first component and the hook sidewall of the second component, which can clamp and limit the main keel in the vertical direction. Under the action of the elastic telescopic structure, the lower plate of the first component and the bottom of the hook groove fix the position of the secondary keel in the vertical direction. At the same time, the hook of the second component can clamp and limit the secondary keel in the vertical direction. The fasteners do not require the main keel and the secondary keel to be fixed by opening holes. Compared with the conventional method, a large number of screw tightening operations are reduced, and the fixing efficiency of the keel frame is improved.
[0010] Furthermore, the elastic telescopic structure includes several sets of elastic devices, which are evenly arranged between the card seat and the card hook.
[0011] Beneficial effects: The elastic telescopic structure provides an installation path for the secondary keel when stretched, and clamps the secondary keel vertically when contracted, making the overall operation convenient.
[0012] Furthermore, the elastic device includes a telescopic rod and a spring, with the two ends of the telescopic rod fixed to the bottom of the card seat and the top of the card hook, respectively, and the spring adapted to be installed on the outside of the telescopic rod.
[0013] Beneficial effects: After the spring deforms, it can contract to achieve the upper and lower clamping of the secondary keel. The telescopic rod itself can move up and down in coordination with the force of the spring, while ensuring that the direction of the spring force does not change and preventing the spring from bending or twisting.
[0014] Furthermore, the limiting structure includes a limiting pin, and a pin hole with a through hole is opened on the side of the lower plate, and the limiting pin is adapted to be inserted into the pin hole.
[0015] Beneficial effect: When the spring contracts and clamps the secondary keel, the limiting pin lifts the hook from the bottom of the hook body above the hook, blocking the downward path of the hook and preventing the hook from continuing to move downward after the secondary keel bears the weight, thus preventing the secondary keel from loosening up and down.
[0016] Furthermore, the slot is a dovetail groove that is wider at the top and narrower at the bottom.
[0017] Beneficial effects: The dovetail structure has good stability in terms of connection and support, and there are no extra steps after the card holder and card slot are connected, making the structure more aesthetically pleasing.
[0018] Furthermore, the hook is a right-angled C-shaped hook, with the upper hook body slidingly adapted to the through hole, and a protrusion provided on the outer side of the hook groove at the bottom of the hook, the width of the hook groove being adapted to the width of the secondary keel.
[0019] Beneficial effects: The hook groove clamps and limits the secondary keel in the vertical direction. The upper hook body of the hook is adapted to the through hole to prevent the hook from shaking in the through hole. This ensures that the elastic telescopic structure of the second component can be easily pulled up and down during use, and also ensures that the side wall of the hook fits and clamps the main keel.
[0020] Furthermore, a limiting block is provided at the top of the hook, and a sliding groove is opened on the side wall corresponding to the through hole. The opening of the sliding groove faces upward, and the depth of the sliding groove is less than the thickness of the lower plate. The limiting block is adapted to the sliding groove.
[0021] Beneficial effect: Prevents the hook from coming off the lower plate of the first component when the second component is fixing the secondary keel, which would cause the hook body above the hook to get stuck in the through hole of the lower plate when the elastic telescopic structure contracts and rebounds.
[0022] Furthermore, the upper plate, lower plate, and side plates are integrated into one structure, and the hooks are also integrated into one structure.
[0023] Beneficial effects: Ensures the structural stability of the first and second components, while reducing assembly steps and facilitating use. Attached Figure Description
[0024] Figure 1 This is a structural diagram illustrating the usage process of this utility model;
[0025] Figure 2 yes Figure 1 A sectional view;
[0026] Figure 3 yes Figure 1 A schematic diagram of the structure of this utility model;
[0027] Figure 4 yes Figure 3 A schematic diagram of the structure of the first component;
[0028] Figure 5 yes Figure 3 A schematic diagram of the structure of the second component;
[0029] In the diagram: 1-Main keel, 2-Secondary keel, 3-Hanging rod, 4-First component, 41-Upper plate, 42-Lower plate, 43-Side plate, 401-Slot, 402-Through hole, 406-Pin hole, 5-Second component, 51-Slot seat, 52-Hook, 53-Telescopic rod, 54-Spring, 55-Limiting block, 56-Protrusion, 6-Limiting pin, 204-Slide groove. Detailed Implementation
[0030] The following describes in further detail a prefabricated ceiling keel mounting fastener of this utility model with reference to the accompanying drawings and specific embodiments.
[0031] like Figure 1-5As shown, this utility model discloses a prefabricated ceiling keel installation fastener, including a first component 4 for fixing the main keel 1, a second component 5 for fixing the secondary keel 2, and a hanger 3. The first component 4 is a right-angled C-shaped block, which includes an upper plate 41, a lower plate 42, and a side plate 43 that are fixedly connected. The lower end of the hanger 3 is vertically fixed above the upper plate 41. The upper end of the hanger 3 is used for detachable connection with an expansion bolt fixed to the ceiling plate. The second component 5 includes a bracket 51, a hook 52, and a connection set between the bracket 51 and the hook 52. The upper plate 41 has a through slot 401, and the card seat 51 is adapted to be snapped into the slot 401. The lower plate 42 has a through hole 402 for the hook 52 to pass through. The lower plate 42 has a limiting structure on its side that supports the hook 52 in the vertical direction. The secondary keel 2 is embedded in the hook groove of the hook 52. The main keel 1 is clamped between the side plate 43 of the first component 4 and the side wall of the hook 52 of the second component 5. The first component 4 and the second component 5 can be used together to fix the main keel 1 and the secondary keel 2.
[0032] The elastic telescopic structure includes several sets of elastic devices, which are evenly arranged between the card seat 51 and the hook 52. In this embodiment, two sets of elastic devices are arranged along the length of the card seat 51. The two sets of elastic devices are symmetrical about the center of the second component 5 to ensure that the elastic force on the connection between the card seat 51 and the hook 52 is uniform. The elastic device includes a telescopic rod 53 and a spring 54. The two ends of the telescopic rod 53 are respectively fixed to the bottom of the card seat 51 and the top of the hook 52. The spring 54 is adapted to be arranged on the outside of the telescopic rod 53. After the spring 54 is deformed, it can contract to achieve the upper and lower clamping of the secondary keel 2. The telescopic rod 53 itself can move up and down in coordination with the force of the spring 54, while ensuring that the direction of the elastic force of the spring 54 does not change, and preventing the spring 54 from bending or twisting.
[0033] In this embodiment, the limiting structure includes a limiting pin 6. A pin hole 406 with a through hole 402 is opened on the side of the lower plate 42. The limiting pin 6 is adapted to be inserted into the pin hole 406. When the secondary keel 2 is installed, the limiting pin 6 is pulled open so that the hook 52 moves downward in the through hole 402 to make the opening of the hook 52. The secondary keel 2 is installed into the hook groove of the hook 52 from the opening. When the spring 54 contracts and clamps the secondary keel 2, the limiting pin 6 lifts the hook 52 from the bottom of the hook body above the hook 52, blocking the downward path of the hook 52 and preventing the hook 52 from continuing to move downward after the secondary keel 2 is under load, thereby causing the secondary keel 2 to loosen up and down. The upper hook body of the top of the hook 52 exceeds the height of the plane of the lower plate 42. The side wall of the hook 52, which is higher than the lower plate 42, together with the side plate 43 of the first component 4, clamps and fixes the main keel 1.
[0034] In this embodiment, the slot 401 is a dovetail groove that is wider at the top and narrower at the bottom. The dovetail structure provides good stability in terms of connection and support. After the slot 401 is connected to the card seat 51, the top of the card seat 51 is flush with the top of the upper plate 41, without any extra steps, making the structure more aesthetically pleasing. The hook 52 is a right-angled C-shaped hook. The upper hook body of the hook 52 slides and adapts to the through hole 402 to prevent the hook 52 from shaking in the through hole 402. This ensures that the elastic telescopic structure of the second component 5 can be easily pulled up and down during use. On the other hand, it ensures that the side wall of the hook 52 fits snugly against the main keel 1, preventing the main keel 1 from shaking in the direction perpendicular to the main keel 1. The bottom of the hook 52 A protrusion 56 is provided on the outer side of the hook groove of the part. The width of the hook groove is adapted to the width of the secondary keel 2. The hook groove of the hook 52 clamps and limits the secondary keel 2 in the vertical direction. A limiting block 55 is provided on the top of the hook 52. A sliding groove 204 is opened on the side wall corresponding to the through hole 402. The opening of the sliding groove 204 faces upward. The depth of the sliding groove 204 is less than the thickness of the lower plate 42. The limiting block 55 is adapted to the sliding groove 204 to prevent the hook 52 from coming off the lower plate 42 of the first component 4 when the second component 5 is fixing the secondary keel 2, which would cause the hook body above the hook 52 to get stuck in the through hole 402 of the lower plate 42 when the elastic telescopic structure contracts and rebounds.
[0035] In this embodiment, the upper plate 41, the lower plate 42, and the side plate 43 are an integral structure, and the hook 52 is an integral structure, which ensures the structural stability of the first component 4 and the second component 5, while reducing assembly steps and making it convenient to use.
[0036] In use, the first step is to fix the hanger rod 3, which is fixed to the ceiling with expansion bolts. This is a common construction method used by those skilled in the art and will not be described in detail in this embodiment. The first component 4 is fixed to the bottom of the hanger rod 3. According to the ceiling frame design drawings, all the first components 4 are fixed. The main keel 1 is inserted between the upper plate 41 and the lower plate 42 of the first component 4 and made to fit against the side plate 43 of the first component 4. Then, the limiting pin 6 on the side of the lower plate 42 of the first component 4 is pulled open so that the through hole 402 of the lower plate 42 is completely avoided. The second component 5 is placed above the slot 401 of the first component 4, so that the hook 52 of the second component 5 passes through the through hole 402 of the lower plate 42 of the first component 4. After the card seat 51 is locked with the slot 401, the bottom of the hook 52 is pulled, and the elastic telescopic structure is stretched. The secondary keel 2 is installed from the opening of the hook 52. The bottom of the secondary keel 2 fits the bottom of the hook groove of the hook 52. Under the contraction of the spring 54, the hook 52 moves upward to clamp the secondary keel 2 at the bottom of the lower plate 42. The limiting pin 6 on the side of the lower plate 42 is inserted and tightened. All the second components 5 are fixed in the same way, and the entire keel frame is fixed.
[0037] The prefabricated ceiling keel installation fastener of this utility model has the following advantages: First, the fastener is easy to install and use. The installation method of the main keel 1 and the secondary keel 2 is convenient and simple. Compared with the traditional bolt and nut fastening method, it can save a lot of working time and improve the fixing efficiency of the keel frame. Second, the fastener is firmly fixed. The vertical direction of the main keel 1 is limited by the upper plate 41 and the lower plate 42, and the front and back direction is limited by the side plate 43 and the hook 52. The vertical direction of the secondary keel 2 is limited by the lower plate 42 and the bottom of the hook groove of the hook 52, and the left and right direction is limited by the groove wall of the hook groove of the hook 52 and the protrusion 56 at the bottom of the hook 52. Neither the main keel 1 nor the secondary keel 2 will shake. Third, it is simple to manufacture and saves materials. The main keel 1 and the secondary keel 2 do not need to be drilled with a large number of bolt connection holes. When fixing the keel, a large number of bolts and nuts are not needed, which can reduce material costs.
[0038] In the above embodiments, the elastic device includes a telescopic rod and a spring. The two ends of the telescopic rod are fixed to the bottom of the card seat and the top of the card hook, respectively. The spring is adapted to be installed on the outside of the telescopic rod. In other embodiments, the telescopic rod may not be provided. When installing the second component, the second component is held vertically. When using it, care should be taken to prevent the spring from bending or breaking.
[0039] In the above embodiments, the card slot is a dovetail groove that is wider at the top and narrower at the bottom. In other embodiments, the card slot may not be a dovetail groove, but may be a conventional through groove. A limiting baffle may also be added to the upper end of the card holder.
[0040] In the above embodiment, a limiting block is provided at the top of the hook, and a sliding groove is opened on the side wall corresponding to the through hole. The opening of the sliding groove faces upward, and the depth of the sliding groove is less than the thickness of the lower plate. The limiting block is adapted to the sliding groove. In other embodiments, the limiting block may not be provided, and the hook may be prevented from disengaging downward from the through hole of the lower plate by limiting the extension stroke of the telescopic rod.
[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A prefabricated ceiling joist mounting fastener, characterized in that, It includes a first component (4) for fixing the main keel (1), a second component (5) for fixing the secondary keel (2), and a hanger (3); The first component (4) is a right-angled C-shaped block, which includes an upper plate (41), a lower plate (42) and a side plate (43) that are fixedly connected. The lower end of the hanger (3) is vertically fixed above the upper plate (41). The upper end of the hanger (3) is used to detachably connect with the expansion bolts fixed on the top plate. The second component (5) includes a card seat (51), a hook (52), and an elastic telescopic structure connecting the card seat (51) and the hook (52); the upper plate (41) has a through slot (401), and the card seat (51) is adapted to be snapped into the slot (401); the lower plate (42) has a through hole (402), through hole (402) for the hook (52) to pass through, and a limiting structure supporting the hook (52) in the vertical direction is provided on the side of the lower plate (42); the secondary keel (2) is embedded in the hook groove (501) of the hook (52); The main keel (1) is clamped between the side plate (43) of the first component (4) and the side wall of the hook (52) of the second component (5).
2. The prefabricated ceiling keel installation fastener according to claim 1, characterized in that, The elastic telescopic structure includes several sets of elastic devices, which are evenly arranged between the card seat (51) and the card hook (52).
3. The prefabricated ceiling keel installation fastener according to claim 2, characterized in that, The elastic device includes a telescopic rod (53) and a spring (54). The two ends of the telescopic rod (53) are fixed to the bottom of the card seat (51) and the top of the hook (52) respectively. The spring (54) is adapted to be installed on the outside of the telescopic rod (53).
4. The prefabricated ceiling keel installation fastener according to claim 1, characterized in that, The limiting structure includes a limiting pin (6), and a pin hole (406) with a through hole (402) is opened on the side of the lower plate (42), and the limiting pin (6) is adapted to be inserted into the pin hole (406).
5. A prefabricated ceiling keel installation fastener according to claim 1, characterized in that, The slot (401) is a dovetail groove that is wider at the top and narrower at the bottom.
6. The prefabricated ceiling keel installation fastener according to claim 1, characterized in that, The hook (52) is a right-angled C-shaped hook. The upper hook body of the hook (52) is slidably adapted to the through hole (402). A protrusion (56) is provided on the outside of the hook groove (501) at the bottom of the hook (52). The width of the hook groove (501) is adapted to the width of the secondary keel (2).
7. The prefabricated ceiling keel installation fastener according to claim 1, characterized in that, The hook (52) is provided with a limiting block (55) at the top, and a sliding groove (204) is opened on the side wall corresponding to the through hole (402). The opening of the sliding groove (204) faces upward, and the depth of the sliding groove (204) is less than the thickness of the lower plate (42). The limiting block (55) is adapted to the sliding groove (204).
8. The prefabricated ceiling keel installation fastener according to claim 1, characterized in that, The upper plate (41), lower plate (42) and side plate (43) are an integral structure, and the hook (52) is an integral structure.