Screw drag hook assembly

Abstract

The utility model discloses a screw drag hook assembly, which belongs to the technical field of screw drag hook processing, and comprises a support mounting cylinder and a drag hook main body connected with the support mounting cylinder, the outer wall of the support mounting cylinder is provided with an external thread, one side of the external thread is symmetrically provided with through holes, and the through holes are communicated with the support mounting cylinder. A hexagonal boss is fixedly connected to the outer edge of a port of the supporting mounting cylinder, an internal connection thread is arranged on the inner side of the hexagonal boss, an expansion plate is mounted on the inner side of the through hole, and a shaft head rotationally connected with the inner wall of the through hole is connected to the end, close to the port of the supporting mounting cylinder, of the expansion plate. The inner vertical face of the expansion plate is integrally provided with an inclined face boss, the outer vertical face of the expansion plate is integrally provided with lotus root anti-skid teeth, during disassembly, after the external thread connecting rod is rotationally taken out, the expansion plate is reset, then the supporting installation cylinder is taken down through the hexagonal boss, disassembly and assembly are convenient, and the repeated utilization rate of the assembly is increased.

Description

Technical Field

[0001] This utility model relates to the field of screw hook processing technology, and more specifically, to a screw hook assembly. Background Technology

[0002] Screw hooks, often called "screw fasteners," are special hooks used to secure items to walls, such as picture frames and mirrors. These hooks are typically made of metal, shaped like an S, and have a small loop and a large loop to support a certain weight.

[0003] Existing screw hooks, when used in conjunction with expansion sleeves, leave the expansion sleeves embedded in the wall when the screw hooks need to be disassembled, resulting in low component reuse rate. In order to facilitate the assembly and disassembly of the screw hook assembly as a whole and improve the reuse rate, we have proposed a screw hook assembly to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a screw hook assembly. During disassembly, after the external threaded connecting rod is rotated out, the expansion plate is reset, and then the support mounting cylinder is removed with the help of the hexagonal boss, which facilitates disassembly and assembly and improves the reusability of the assembly.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A screw hook assembly includes a support mounting cylinder and a hook body connected to the support mounting cylinder. The outer wall of the support mounting cylinder is provided with an external thread, and a through hole is symmetrically opened on one side of the external thread. A hexagonal boss is fixedly connected to the outer edge of the port of the support mounting cylinder, and an internal thread is provided on the inner side of the hexagonal boss.

[0009] An expansion plate is installed inside the through hole. One end of the expansion plate near the port of the support mounting cylinder is connected to a shaft head that is rotatably connected to the inner wall of the through hole. An inclined boss is integrally formed on the inner surface of the expansion plate, and anti-slip teeth are integrally formed on the outer surface of the expansion plate.

[0010] An external threaded connecting rod, which is connected to the hook body, is screwed into the internal thread, and the tapered end of the external threaded connecting rod is in contact with the inclined boss.

[0011] Furthermore, a connecting boss is fixedly connected to the part of the hook body near its bent end.

[0012] Furthermore, a U-shaped anti-disengagement buckle is rotatably connected to the connecting boss, and the end of the anti-disengagement buckle abuts against the inner edge of the bent end of the hook body.

[0013] Furthermore, a torsion spring is fitted at the base of the anti-disengagement buckle. One end of the torsion spring is connected to the surface of the connecting boss away from the bent end of the hook body, and the other end of the torsion spring is connected to the part of the anti-disengagement buckle facing away from the notch of the bent end of the hook body.

[0014] Furthermore, a limiting boss is fixedly connected between the external threaded connecting rod and the hook body.

[0015] Furthermore, a reinforcing rib with a right-angled triangular structure is fixedly connected to the part where the limiting boss is combined with the hook body, and multiple reinforcing ribs are arranged in the radial position of the limiting boss.

[0016] Furthermore, the support mounting cylinder, hook body, expansion plate, and external threaded connecting rod are all made of stainless steel.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) In this solution, the support mounting cylinder is screwed into the wall using an external thread and a hexagonal wrench with a hexagonal boss. Then, the external threaded connecting rod is screwed into the inner side of the support mounting cylinder with the internal thread. The conical end of the external threaded connecting rod fits into the inclined boss, so that the shaft head rotates with the through hole to expand the expansion plate. This makes the anti-slip teeth on the outer surface of the expansion plate fit tightly into the inner wall of the hole, preventing the support mounting cylinder from loosening. When disassembling, the external threaded connecting rod is rotated out and the expansion plate is reset. Then, the support mounting cylinder is removed with the help of the hexagonal boss, which facilitates disassembly and assembly and improves the component reuse rate.

[0020] (2) In this solution, when hanging items using the hook body, the hanging rope squeezes the anti-detachment buckle to make the bent end of the hook body hang the items. At the same time, the torque of the torsion spring makes the anti-detachment buckle and the connecting boss rotate in the opposite direction, so that the end of the anti-detachment buckle abuts against the inner edge of the bent end of the hook body, which can effectively prevent the hung items from falling off.

[0021] (3) This solution strengthens the strength, rigidity and torsional resistance of the hook body by reinforcing ribs, which can overcome the product distortion caused by uneven stress due to the difference in outer diameter of the hook body, thereby increasing the strength of the joint surface with the limiting boss and thus effectively improving the load-bearing capacity of the hook body. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a side view of the present invention;

[0024] Figure 3 This is a cross-sectional view of part AA of the present invention;

[0025] Figure 4 This is a schematic diagram of the support mounting cylinder structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the expansion plate structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the external threaded connecting rod structure of this utility model.

[0028] Explanation of the labels in the diagram:

[0029] 1. Support mounting cylinder; 2. Hook body; 3. External thread; 4. Through hole; 5. Expansion plate; 6. Shaft head; 7. Angled boss; 8. Anti-slip teeth; 9. Hexagonal boss; 10. Internal thread; 11. External thread connecting rod; 12. Limiting boss; 13. Reinforcing rib; 14. Connecting boss; 15. Anti-disengagement; 16. Torsion spring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0031] Example:

[0032] Please see Figure 1-6 A screw hook assembly includes a support mounting cylinder 1 and a hook body 2 connected to the support mounting cylinder 1. The outer wall of the support mounting cylinder 1 is provided with an external thread 3. A through hole 4 is symmetrically opened on one side of the external thread 3. A hexagonal boss 9 is fixedly connected to the outer edge of the port of the support mounting cylinder 1. An internal thread 10 is provided on the inner side of the hexagonal boss 9.

[0033] An expansion plate 5 is installed inside the through hole 4. One end of the expansion plate 5 near the port of the support mounting cylinder 1 is connected to a shaft head 6 that is rotatably connected to the inner wall of the through hole 4. The inner surface of the expansion plate 5 is integrally formed with a sloping boss 7, and the outer surface of the expansion plate 5 is integrally formed with anti-slip teeth 8.

[0034] An external threaded connecting rod 11, which is connected to the hook body 2, is screwed at the internal thread 10, and the tapered end of the external threaded connecting rod 11 is in contact with the inclined boss 7.

[0035] It should be noted that when using this screw hook assembly, firstly, a hole is drilled in the wall, the diameter of which matches the outer diameter of the support mounting cylinder 1. Then, using the external thread 3 and a hexagonal wrench in conjunction with the hexagonal boss 9, the support mounting cylinder 1 is screwed into the wall. Subsequently, the external thread connecting rod 11 is screwed into the inner side of the support mounting cylinder 1 using the internal thread 10. The conical end of the external thread connecting rod 11 fits against the inclined boss 7, thereby causing the shaft head 6 to rotate in conjunction with the through hole 4, causing the expansion plate 5 to expand outward. This allows the anti-slip teeth 8 on the outer surface of the expansion plate 5 to fit tightly against the inner wall of the hole, preventing the support mounting cylinder 1 from loosening. During disassembly, after rotating and removing the external thread connecting rod 11, the expansion plate 5 is reset. Then, the support mounting cylinder 1 is removed using the hexagonal boss 9, which facilitates disassembly and assembly and improves the reusability of the component.

[0036] like Figure 1 , Figure 6 As shown, a connecting boss 14 is fixedly connected to the part of the hook body 2 near its bent end. A U-shaped anti-disengagement buckle 15 is rotatably connected to the connecting boss 14. The end of the anti-disengagement buckle 15 abuts against the inner edge of the bent end of the hook body 2. A torsion spring 16 is sleeved at the root of the anti-disengagement buckle 15. One end of the torsion spring 16 is connected to the surface of the connecting boss 14 away from the bent end of the hook body 2, and the other end of the torsion spring 16 is connected to the part of the anti-disengagement buckle 15 facing away from the notch of the bent end of the hook body 2.

[0037] It should be noted that when using the hook body 2 to hang items, the hanging rope squeezes the anti-detachment buckle 15 to hang the items at the bent end of the hook body 2. At the same time, the torque of the torsion spring 16 causes the anti-detachment buckle 15 to rotate in the opposite direction with the connecting boss 14, so that the end of the anti-detachment buckle 15 abuts against the inner edge of the bent end of the hook body 2, which can effectively prevent the hung items from falling off.

[0038] like Figure 1 As shown, a limiting boss 12 is fixedly connected between the external threaded connecting rod 11 and the hook body 2. A reinforcing rib 13 with a right-angled triangular structure is fixedly connected at the part where the limiting boss 12 and the hook body 2 are combined. Multiple reinforcing ribs 13 are provided in the radial position of the limiting boss 12.

[0039] It should be noted that by reinforcing the hook body 2 with the reinforcing rib 13, the strength, rigidity and torsional resistance of the hook body 2 can be enhanced, which can overcome the product distortion caused by uneven stress due to the difference in outer diameter of the hook body 2, thereby increasing the strength of the mating surface with the limiting boss 12, and thus effectively improving the load-bearing capacity of the hook body 2.

[0040] The support mounting cylinder 1, hook body 2, expansion plate 5, and external threaded connecting rod 11 are all made of stainless steel.

[0041] In use: First, drill a hole in the wall with a diameter that matches the outer diameter of the support mounting cylinder 1. Then, using the external thread 3 and a hexagonal wrench with the hexagonal boss 9, screw the support mounting cylinder 1 into the wall. Next, screw the external threaded connecting rod 11 into the inner side of the support mounting cylinder 1 with the internal thread 10. The tapered end of the external threaded connecting rod 11 fits against the inclined boss 7, causing the shaft head 6 to rotate with the through hole 4, expanding the expansion plate 5 outward. This allows the anti-slip teeth 8 on the outer surface of the expansion plate 5 to fit tightly against the inner wall of the hole, preventing the support mounting cylinder 1 from loosening. When disassembling, rotate the external threaded connecting rod 11 to remove it, and the expansion plate 5 will be reset. Then, use the hexagonal boss 9 to remove the support mounting cylinder 1.

[0042] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A screw retractor assembly comprising a support mounting cylinder (1) and a retractor body (2) connected to the support mounting cylinder (1), characterised in that: The outer wall of the support mounting cylinder (1) is provided with an external thread (3), and a through hole (4) is symmetrically opened on one side of the external thread (3). A hexagonal boss (9) is fixedly connected to the outer edge of the port of the support mounting cylinder (1), and an internal thread (10) is provided on the inner side of the hexagonal boss (9). An expansion plate (5) is installed on the inner side of the through hole (4). One end of the expansion plate (5) near the port of the support mounting cylinder (1) is connected to a shaft head (6) that is rotatably connected to the inner wall of the through hole (4). An inclined boss (7) is integrally formed on the inner surface of the expansion plate (5). An anti-slip tooth (8) is integrally formed on the outer surface of the expansion plate (5). An external threaded connecting rod (11) connected to the hook body (2) is screwed at the internal thread (10), and the conical end of the external threaded connecting rod (11) is in contact with the inclined boss (7).

2. A screw retractor assembly according to claim 1, wherein: The hook body (2) is fixedly connected to a connecting boss (14) near its bent end.

3. A screw-pulley assembly according to claim 2, wherein: The connecting boss (14) is rotatably connected to an anti-disengagement buckle (15) with a U-shaped structure, and the end of the anti-disengagement buckle (15) abuts against the inner edge of the bent end of the hook body (2).

4. A screw-pulley assembly according to claim 3, wherein: The anti-disengagement buckle (15) is fitted with a torsion spring (16) at its root. One end of the torsion spring (16) is connected to the surface of the connecting boss (14) away from the bent end of the hook body (2), and the other end of the torsion spring (16) is connected to the part of the anti-disengagement buckle (15) facing away from the bent end notch of the hook body (2).

5. A screw retractor assembly according to claim 1, wherein: A limiting boss (12) is fixedly connected between the external threaded connecting rod (11) and the hook body (2).

6. A screw hook assembly according to claim 5, characterized in that: The limiting boss (12) is fixedly connected to the hook body (2) with a reinforcing rib (13) arranged in a right-angled triangle structure, and multiple reinforcing ribs (13) are arranged in the radial position of the limiting boss (12).

7. A screw retractor assembly according to claim 1, wherein: The support mounting cylinder (1), hook body (2), expansion plate (5) and external threaded connecting rod (11) are all made of stainless steel.

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