An expansion column connection structure for an extremely narrow cavity

Abstract

This utility model discloses an expansion column connection structure for an extremely narrow cavity, including a first connecting component and a second connecting component. The second connecting component has a vertical cavity. Screw mounting holes are provided on the front and / or rear side walls of the cavity. The upper part of the connecting component body is inserted into the cavity. A threaded hole is provided on the upper part of the connecting component body, and a through threaded opening is located below the threaded hole. Screw mounting holes and threaded holes correspond to each other and screws are inserted into them. The upper end of a movable top block has a first wedge-shaped portion located within the threaded opening. The movable top block can move downwards relative to the connecting component body as the screw is inserted and installed. The connecting component body can expand outwards as the movable top block moves downwards relative to the connecting component body. After the screw is installed, the connecting component body abuts against the first connecting component and engages. This utility model achieves expansion of the connecting component body as the screw is tightened, resulting in reliable connection and convenient assembly and disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, and specifically relates to an expansion column connection structure for an extremely narrow cavity. Background Technology

[0002] For example, in door and window structures, frame components need to be connected and fixed using connectors. Traditional connectors, such as corner brackets, are installed and connected to the two components separately using screws. This requires a large number of screws and precise bolt positioning, making installation time-consuming. Furthermore, some common frame structures currently use profiles with cavities, placing corner brackets or other connectors within these cavities. While this offers advantages such as improved aesthetics, it increases installation difficulty and can lead to gaps between the connectors and the cavities, resulting in unstable connections. Especially for extremely narrow cavities with small cross-sectional dimensions, existing connectors are insufficient to meet the requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an expansion column connection structure for an extremely narrow cavity, which solves the problems of difficult installation and unstable connection of existing connectors. It can be installed by inserting only one screw from the outside, which is convenient to use. At the same time, the internal structure expands and tightens as the screw is installed, ensuring reliable connection, which is especially suitable for extremely narrow cavity situations.

[0004] According to the technical solution of this utility model, this utility model provides an expansion column connection structure for an extremely narrow cavity, including a first connecting component and a second connecting component. The second connecting component has a vertical cavity, and the first connecting component is located below the cavity. The first connecting component and the second connecting component are mated together and connected by a connector. The connector includes a connector body, a movable top block, and a screw. The front and / or rear side walls of the cavity are provided with screw mounting holes. The upper part of the connector body is inserted into the cavity, and the upper part of the connector body is provided with a threaded hole. Below the threaded hole is a through threaded hole. The movable top block is adjacent to the main body of the connector and is located below the threaded hole; the screw mounting hole corresponds to the threaded hole and a screw is inserted therethrough; the upper end of the movable top block has a first wedge-shaped portion, which is located inside the opening of the threaded hole. In the direction of screw insertion, the height of the first wedge-shaped portion gradually increases so that the movable top block can move downward relative to the main body of the connector as the screw is inserted and installed; there is a matching inclined surface between the movable top block and the main body of the connector so that the main body of the connector can expand outward as the movable top block moves downward relative to the main body of the connector, and after the screw is installed, the main body of the connector is engaged with the first connecting component.

[0005] In some embodiments, the left side of the first connecting member has a left-side slot and the right side of the first connecting member has a right-side slot; after the screws are installed, the left and right sides of the connecting body are respectively engaged with the left-side slot and the right-side slot.

[0006] In some embodiments, the first connecting member has a protruding stop on its upper surface between the left and right slots; after the screws are installed, the lower end of the movable top block abuts against the stop.

[0007] In some embodiments, the connector body includes a vertical main body plate, a locking portion on the left side of the main body plate, a threaded hole located on the upper right side of the main body plate, and a hook-shaped portion extending below the right side of the threaded hole; a movable top block is located between the main body plate and the hook-shaped portion; after the screw is installed, the locking portion engages with the left locking groove, and the hook-shaped portion engages with the right locking groove.

[0008] In some embodiments, the right side of the movable top block has a second wedge-shaped portion, the position of which corresponds to the hook-shaped portion, and the right side of the second wedge-shaped portion is an inclined surface that slopes to the right at the upper end.

[0009] In some embodiments, the right side of the main plate has a protruding third wedge-shaped portion, the right side of the third wedge-shaped portion is a slope that slopes to the right at the lower end, and the left side of the movable top block has a slope that matches the third wedge-shaped portion.

[0010] In some embodiments, the position of the third wedge corresponds to the locking portion.

[0011] In some implementations, after the screws are installed, the lower end of the movable top block abuts against the upper surface of the first connecting member.

[0012] In some embodiments, the lower end of the movable top block has two downwardly extending toothed portions, which are side by side and have their lower ends flush.

[0013] In some embodiments, the left and right slots of the first connecting member are both protruding above the first connecting member, and the second connecting member has a notch at a position corresponding to the left and right slots, so that the first connecting member and the second connecting member can be matched and mated.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] The expansion column connection structure of this utility model for an ultra-narrow cavity has a matching connector body and a movable top block set in the cavity. Through the design of the wedge-shaped part and the inclined surface, the movable top block moves downward as the screw is tightened, and the connector body expands and expands, finally realizing the connection of the first and second connecting parts. This solution has reliable connection, convenient assembly and disassembly, no need to draw lines for positioning, and can be flexibly adjusted in position, making it particularly suitable for use in ultra-narrow cavities. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the overall structure after installation and connection provided by this utility model.

[0017] Figure 2 of Figure 1 A schematic diagram of a partial cross-sectional structure.

[0018] Figure 3 yes Figure 1 A schematic diagram of the main structure of the component in its split state.

[0019] Figure 4 This is a three-dimensional structural diagram of the connector body provided by this utility model.

[0020] Figure 5 yes Figure 4 The main view.

[0021] Figure 6 This is a three-dimensional structural diagram of the movable top block provided by this utility model.

[0022] Figure 7 yes Figure 6 The main view.

[0023] Figure 8 This is a structural diagram of the first connecting component, the main body of the connecting piece, and the movable top block of this utility model before the screws are installed.

[0024] Figure 9 This is a structural diagram of the first connecting component, the main body of the connecting piece, and the movable top block of this utility model after the screws are installed.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. First connecting component; 11. Left side slot; 12. Right side slot; 13. Stop block; 2. Second connecting component; 21. Cavity; 22. Screw mounting hole; 3. Connecting component body; 31. Threaded hole; 32. Main body plate; 33. Locking part; 34. Hook-shaped part; 35. Third wedge-shaped part; 4. Movable top block; 41. First wedge-shaped part; 42. Second wedge-shaped part; 43. Toothed part; 5. Screw. Detailed Implementation

[0027] This utility model provides an expansion column connection structure for extremely narrow cavities, which solves the problems of difficult installation and unstable connection of existing connectors. It allows for installation by inserting only one screw from the outside, making it convenient to use. At the same time, the internal structure expands and tightens as the screw is installed, ensuring a reliable connection, which is especially suitable for extremely narrow cavities.

[0028] Please see Figures 1 to 9 This utility model discloses an expansion column connection structure for an extremely narrow cavity, comprising a first connecting component 1 and a second connecting component 2. The second connecting component 2 has a vertical cavity 21, and the first connecting component 1 is located below the cavity 21. The first connecting component 1 and the second connecting component 2 are mated together (the shapes of adjacent parts of the first connecting component 1 and the second connecting component 2 match), and the first connecting component 1 and the second connecting component 2 are connected by a connector.

[0029] The connector includes a connector body 3, a movable top block 4, and a screw 5. The front and / or rear sidewalls of the cavity 21 have screw mounting holes 22. The upper part of the connector body 3 is inserted into the cavity 21. The upper part of the connector body 3 has a threaded hole 31, with a through threaded hole opening below the threaded hole 31. The movable top block 4 is adjacent to the connector body 3 and located below the threaded hole 31. After the first connecting component 1 and the second connecting component 2 are mated together, the screw mounting hole 22 and the threaded hole 31 correspond (through), and the screw 5 is inserted into both the screw mounting hole 22 and the threaded hole 31. The upper end of the movable top block 4 has a first wedge-shaped portion 41, which is located within the threaded hole opening (when the screw 5 is not installed). In the direction of screw 5 insertion, the height of the first wedge-shaped portion 41 gradually increases, so that the movable top block 4 can move downward relative to the connector body 3 as the screw 5 is inserted (the movable top block 4 is pushed downward out of the threaded hole 31 by the screw 5).

[0030] Meanwhile, the movable top block 4 and the connecting body 3 have matching inclined surfaces so that the connecting body 3 can expand outward as the movable top block 4 moves downward relative to the connecting body 3, and after the screw 5 is installed, the connecting body 3 is engaged with the first connecting component 1.

[0031] Furthermore, the left side of the first connecting component 1 has a left retaining groove 11, and the right side of the first connecting component 1 has a right retaining groove 12. After the screw 5 is installed, the connecting body 3 expands to the left and right sides, and the left and right sides of the connecting body 3 respectively engage with the left retaining groove 11 and the right retaining groove 12.

[0032] Preferably, the first connecting component 1 has a protruding stop 13 on its upper surface between the left slot 11 and the right slot 12. After the screw 5 is installed, the lower end of the movable top block 4 abuts against the stop 13. In addition to the left and right sides, this design also has a lateral abutment point at the lower end of the movable top block 4, which can further ensure the abutment and tightening effect.

[0033] More specifically, in the illustrated embodiment, the connector body 3 includes a vertical body plate portion 32, and a locking portion 33 is provided on the left side of the body plate portion 32 (in the illustrated embodiment, the locking portion 33 is located on the lower left side of the body plate portion 32 and extends to the left). A threaded hole 31 is located on the upper right side of the body plate portion 32, and a hook-shaped portion 34 is provided extending below the right side of the threaded hole 31; more specifically, the end of the hook-shaped portion 34 forms a hook, and a connecting arm is formed between the hook and the threaded hole 31, and the connecting arm can undergo a certain elastic deformation. A movable top block 4 is located between the body plate portion 32 and the hook-shaped portion 34. After the screw 5 is installed, the locking portion 33 abuts against the left locking groove 11 and the hook-shaped portion 34 abuts against the right locking groove 12.

[0034] The right side of the movable top block 4 has a second wedge-shaped portion 42, which corresponds to the hook-shaped portion 34. The right side of the second wedge-shaped portion 42 is an inclined surface that slopes to the right at the top. This allows the hook-shaped portion 34 to undergo a certain elastic deformation (deflect to the right) to the right as the second wedge-shaped portion 42 moves downward, thereby achieving contact.

[0035] The right side of the main plate 32 has a protruding third wedge-shaped portion 35, the right side of which is a sloped surface inclined to the right at its lower end. The left side of the movable top block 4 has a sloped surface that matches the third wedge-shaped portion 35. This allows the third wedge-shaped portion 35 to abut against the left side slot 11 as the movable top block 4 moves downward. Simultaneously, in a design with a stop block 13, the lower end of the movable top block 4 will also abut against the stop block 13 to the right due to the third wedge-shaped portion 35. Preferably, the position of the third wedge-shaped portion 35 corresponds to that of the locking portion 33, that is, their positions are substantially the same in the vertical direction, so that the abutment action of the left side slot 11 against the locking portion 33 can be directly transmitted to the third wedge-shaped portion 35 and the movable top block 4.

[0036] Preferably, after the screw 5 is installed, the lower end of the movable top block 4 abuts against the upper surface of the first connecting component 1, further enhancing the positioning effect. Further, the lower end of the movable top block 4 consists of two downwardly extending toothed portions 43, which are side-by-side and flush at their lower ends. The lower ends of the toothed portions 43 gradually taper, and positioning is achieved by the two points at the lower ends of the two toothed portions 43 abutting against the upper surface of the first connecting component 1, further ensuring the accuracy and stability of the connected state. For the scheme with a stop block 13, after the screw is installed, the right side of the toothed portion 43 abuts against the left side of the stop block 13.

[0037] In the illustrated embodiment, the left slot 11 and the right slot 12 of the first connecting component 1 are both protruding above the first connecting component 1, and the second connecting component 2 has a notch at the position corresponding to the left slot 11 and the right slot 12, so that the first connecting component 1 and the second connecting component 2 can be matched and connected (or spliced).

[0038] like Figure 4 In the embodiment shown, the connector body 3 is a curved plate-like structure with elastic deformation on both sides. The connector body 3 is relatively narrow and can be better inserted into an extremely narrow cavity.

[0039] like Figure 6 In the embodiment shown, the first wedge-shaped portion 41 on the movable top block 4 is triangular so that screws inserted from the front or back can achieve the desired effect.

[0040] As a further explanation, in the illustrated embodiment, both the first connecting component 1 and the second connecting component 2 are profiles, and the first connecting component 1 and the second connecting component 2 are perpendicular to each other. Both the first connecting component 1 and the second connecting component 2 are part of a thermally broken profile, and are formed by connecting two perpendicular thermally broken profiles. The remaining portion of the thermally broken profile of the first connecting component 1 also has a protruding groove, and the remaining portion of the thermally broken profile of the second connecting component 2 also has a matching notch. The dimensions of the cavity 21 are, for example, 10mm to 30mm, more specifically, 14.6mm, and the distance between the left side of the main body plate portion 32 and the right side of the hook-shaped portion 34 is, for example, 9mm.

[0041] The working principle of a typical embodiment of this utility model is as follows. The locking portion 33 on the lower left side of the connector body forms a reverse-edge locking position, and the hook-shaped portion 34 on the right side of the connector body forms a hook-shaped locking position. The locking positions on both sides are adapted to the slots of the first connecting component, and the connector body and the first connecting component are connected by the locking positions inserting into the slots. The top shape of the connector body is adapted to the cavity of the second connecting component. A threaded hole 31 is provided on the top of the connector body. A movable top block is fitted inside the connector body. The connector body and the movable top block have three mating wedge structures. The top wedge structure (first wedge portion 41) overlaps with the threaded hole on the top of the connector body, and the movable top block is pushed downward by screwing a screw into the screw hole. The right wedge structure (second wedge portion 41) causes the right side of the connector body to expand when the movable top block moves downward. The left wedge structure (third wedge portion 35) causes the left side of the connector body to expand when the movable top block moves downward. In this way, while screwing in and tightening the screws, the connector is effectively connected to the first connecting component; at the same time, the connector is also effectively connected to the second connecting component through the matching cavity and the screw head's screw mounting hole in the second connecting component; ultimately, the connection between the first and second connecting components is achieved. Figure 8 , Figure 9 As shown, by installing screws, the expansion locking of the hook-shaped part 43 with the right side slot 12, the expansion locking of the locking part 33 with the left side slot 11, and the expansion locking of the toothed part 43 with the upper surface of the first connecting member can be formed simultaneously.

[0042] In summary, the expansion column connection structure of the ultra-narrow cavity of this utility model sets a matching connecting body and a movable top block in the cavity. Through the design of the wedge-shaped part and the inclined surface, the movable top block moves downward as the screw is tightened, and the connecting body expands and expands, ultimately realizing the connection of the first and second connecting parts. This solution has reliable connection, convenient assembly and disassembly, no need to draw lines for positioning, and can be flexibly adjusted in position, making it particularly suitable for use in ultra-narrow cavities.

Claims

1. An expansion column connection structure for an extremely narrow cavity, characterized in that, It includes a first connecting component (1) and a second connecting component (2), the second connecting component (2) having a vertical cavity (21), the first connecting component (1) being located below the cavity (21); the first connecting component (1) and the second connecting component (2) are mated together, and the first connecting component (1) and the second connecting component (2) are connected by a connector; The connector includes a connector body (3), a movable top block (4), and screws (5); the front and / or rear side walls of the cavity (21) are provided with screw mounting holes (22), the upper part of the connector body (3) is inserted into the cavity (21), the upper part of the connector body (3) is provided with a threaded hole (31), and a through threaded hole opening is provided below the threaded hole (31). The movable top block (4) is adjacent to the connector body (3) and is located below the threaded hole (31); the screw mounting holes (22) and the threaded holes (31) correspond to each other and screws (5) are inserted; the upper end of the movable top block (4) has There is a first wedge (41) located inside the threaded hole opening. In the direction of screw (5) insertion, the height of the first wedge (41) gradually increases so that the movable top block (4) can move downward relative to the connector body (3) as the screw (5) is inserted and installed. There is a matching inclined surface between the movable top block (4) and the connector body (3) so that the connector body (3) can expand outward as the movable top block (4) moves downward relative to the connector body (3). After the screw (5) is installed, the connector body (3) is engaged with the first connecting part (1) in abutment.

2. The expansion column connection structure of the ultra-narrow cavity according to claim 1, characterized in that, The left side of the first connecting part (1) has a left slot (11), and the right side of the first connecting part (1) has a right slot (12); after the screw (5) is installed, the left and right sides of the connecting body (3) are respectively engaged with the left slot (11) and the right slot (12).

3. The expansion column connection structure of the ultra-narrow cavity according to claim 2, characterized in that, The first connecting part (1) has a protruding stop (13) on the upper surface between the left slot (11) and the right slot (12); after the screw (5) is installed, the lower end of the movable top block (4) abuts against the stop (13).

4. The expansion column connection structure of the ultra-narrow cavity according to claim 3, characterized in that, The connector body (3) includes a vertical main body plate (32), a locking part (33) on the left side of the main body plate (32), a threaded hole (31) located on the upper right side of the main body plate (32), and a hook-shaped part (34) extending below the right side of the threaded hole (31); a movable top block (4) is located between the main body plate (32) and the hook-shaped part (34); after the screw (5) is installed, the locking part (33) engages with the left side slot (11) and the hook-shaped part (34) engages with the right side slot (12).

5. The expansion column connection structure of the ultra-narrow cavity according to claim 4, characterized in that, The right side of the movable top block (4) has a second wedge (42), the position of which corresponds to the hook (34), and the right side of the second wedge (42) is an inclined surface that slopes to the right at the top.

6. The expansion column connection structure of the ultra-narrow cavity according to claim 5, characterized in that, The right side of the main plate (32) has a protruding third wedge (35), the right side of the third wedge (35) is a slope that slopes to the right at the lower end, and the left side of the movable top block (4) has a slope that matches the third wedge (35).

7. The expansion column connection structure of the ultra-narrow cavity according to claim 6, characterized in that, The position of the third wedge (35) corresponds to that of the locking part (33).

8. The expansion column connection structure of the ultra-narrow cavity according to any one of claims 2-7, characterized in that, After the screw (5) is installed, the lower end of the movable top block (4) abuts against the upper surface of the first connecting part (1).

9. The expansion column connection structure of the ultra-narrow cavity according to claim 8, characterized in that, The lower end of the movable top block (4) consists of two downward-extending toothed parts (43), which are side by side and have their lower ends flush.

10. The expansion column connection structure of the ultra-narrow cavity according to any one of claims 2-7, characterized in that, The left slot (11) and right slot (12) of the first connecting component (1) are both protruding above the first connecting component (1). The second connecting component (2) has notches at positions corresponding to the left slot (11) and right slot (12) so that the first connecting component (1) and the second connecting component (2) can be matched and docked.

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