A straight-in metal fastener

Abstract

The application discloses a direct insertion type metal fastener and belongs to the technical field of metal fastening. The direct insertion type metal fastener comprises a plug barrel, the upper end surface of the plug barrel is fixedly connected with a fixed head, a plurality of sliding grooves are arranged below the outer wall of the plug barrel and are communicated with the inside of the plug barrel, the upper end surface of the fixed head is provided with a mounting groove, and a rotating block is rotatably connected in the mounting groove. The plug barrel is inserted into the mounting hole of the component to be fixed, the fixed head is pressed downward to drive the moving block to move downward, the top block is pressed and rotated by the inner wall of the mounting hole and the supporting spring is compressed, the supporting spring rebounds after the plug barrel penetrates the mounting hole, the top block is ejected from the sliding groove, and the foundation for subsequent fastening is laid. A tool is inserted into the slot to rotate the rotating block, the limiting ring is rotated along the limiting groove to ensure stability, the rotating block drives the fixed rod and the threaded rod to rotate, the moving block is pushed upward under the limitation of the sliding groove, the top block is tightly attached to the lower end surface of the lower component, two components to be fixed can be firmly clamped, and loosening is prevented.

Description

Technical Field

[0001] This application relates to the field of metal fastening technology, and more specifically, to a direct-insertion metal fastener. Background Technology

[0002] Direct-insertion metal fasteners are specialized connectors used to connect and fix metal or other material components. They are suitable for various scenarios such as equipment assembly, building installation, and furniture fixing. No complicated tools are required; they can be initially positioned by directly inserting them into preset holes. Some also have snap-fit, threaded locking, or expansion structures to achieve a stable connection. They can withstand a certain amount of tensile and shear forces to prevent loosening and falling off after connection. They are suitable for connecting components of different thicknesses and materials, are easy to install, and have high connection reliability. They help improve assembly efficiency and the stability of component connections, meeting the needs for rapid fixing of various lightweight or small and medium-sized components.

[0003] In practice, after the direct-insertion metal fastener is inserted into the mounting hole of the component to be fixed, it is difficult to achieve a firm clamping of the two components through simple operation. Moreover, the disassembly process is cumbersome, and some fasteners cannot be reset and reused after disassembly, which brings inconvenience to the convenient installation and fixing of components, subsequent disassembly and maintenance, and resource recycling. Utility Model Content

[0004] The purpose of this application is to provide a direct-insertion metal fastener that solves the technical problems mentioned in the background art.

[0005] This application provides a direct-insertion metal fastener, including a insert, a fixing head fixedly connected to the upper end face of the insert, multiple sliding grooves formed on the lower part of the outer wall of the insert, and the sliding grooves communicating with the interior of the insert, an installation groove formed on the upper end face of the fixing head, a rotating block rotatably connected inside the installation groove, a fixing rod fixedly connected to the lower end face of the rotating block, a threaded rod fixedly connected to the lower end of the fixing rod, a moving block rotatably connected to the outer wall of the threaded rod by threads, multiple slots corresponding to the sliding grooves formed on the outer wall of the moving block, a top block provided inside the slot, the end faces of the multiple top blocks that are far apart from each other are inclined, and the upper end face of the top block is larger than the lower end face of the top block.

[0006] Optionally, a limiting groove is formed on the inner wall of the mounting groove, and a limiting ring is fixedly connected to the outer wall of the rotating block, with the limiting ring located inside the limiting groove.

[0007] Optionally, a slot is formed on the upper end face of the rotating block.

[0008] Optionally, the fixing rod passes through the fixing head and extends into the insert, and the lower end of the threaded rod is rotatably connected to the lower part of the insert.

[0009] Optionally, a fixed shaft is fixedly inserted into the lower end of the top block, and the two ends of the fixed shaft extend rotatably into both sides of the lower inner wall of the slot.

[0010] Optionally, each of the multiple top blocks has a connecting groove on its close-to-each end face. A support spring is fixedly connected inside the connecting groove, and the other end of the support spring is fixedly connected inside the slot.

[0011] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0012] This application involves inserting a plunger into the mounting hole of the component to be fixed, pressing down on the fixing head to move the moving block downwards. The top block rotates under the pressure of the inner wall of the mounting hole, compressing the support spring. After the plunger passes through the mounting hole, the support spring rebounds, causing the top block to pop out of the slide groove, laying the foundation for subsequent fastening. A tool is inserted into the slot to rotate the rotating block. The limiting ring rotates along the limiting groove to ensure stability. The rotating block drives the fixing rod and threaded rod to rotate, pushing the moving block upwards under the limiting position of the slide groove, so that the top block fits tightly against the lower end face of the component below, firmly clamping the two components to be fixed and preventing loosening. For disassembly, the rotating block is rotated in the opposite direction to move the moving block downwards, pressing the top block into the slide groove and slot. Pulling the fixing head upwards removes the fastener. The support spring causes the top block to return to its original position, facilitating reuse. The overall design considers convenient installation, stable fixing, and recyclability, and can fix components of different thicknesses, greatly improving the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the direct-insertion metal fastener disclosed in an embodiment of this application;

[0014] Figure 2 This is a schematic diagram of the internal structure of the direct-insertion metal fastener insert disclosed in an embodiment of this application;

[0015] Figure 3 This is a cross-sectional view of the direct-insertion metal fastener moving block disclosed in an embodiment of this application;

[0016] The following are the labels in the diagram: 1. Insert tube; 2. Fixed head; 3. Slide groove; 4. Mounting groove; 5. Rotating block; 6. Slotted groove; 7. Limiting groove; 8. Limiting ring; 9. Fixed rod; 10. Threaded rod; 11. Moving block; 12. Slot; 13. Top block; 14. Fixed shaft; 15. Connecting groove; 16. Support spring. Detailed Implementation

[0017] The present application will be further described in detail below with reference to the accompanying drawings.

[0018] Reference Figures 1-3This application provides a direct-insertion metal fastener, including a cylinder 1. A fixing head 2 is fixedly connected to the upper end face of the cylinder 1. Multiple sliding grooves 3 are formed on the lower part of the outer wall of the cylinder 1, and the sliding grooves 3 are connected to the interior of the cylinder 1. An installation groove 4 is formed on the upper end face of the fixing head 2. A rotating block 5 is rotatably connected inside the installation groove 4. A fixing rod 9 is fixedly connected to the lower end face of the rotating block 5. The fixing rod 9 passes through the fixing head 2. A threaded rod 10 is fixedly connected to the lower end of the fixing rod 9 and extends into the cylinder 1. The lower end of the threaded rod 10 is rotatably connected to the lower part of the interior of the cylinder 1. A moving block 11 is rotatably connected to the outer wall of the threaded rod 10 by a thread. Multiple slots 12 corresponding to the sliding grooves 3 are formed on the outer wall of the moving block 11. A top block 13 is provided inside the slots 12. Multiple top blocks 13 have inclined surfaces at their far ends, with the upper end of each top block 13 being larger than its lower end. A fixed shaft 14 is fixedly inserted into the lower end of each top block 13, and both ends of the fixed shaft 14 extend into the inner walls of the slot 12. Connecting grooves 15 are provided at the close ends of the multiple top blocks 13. A support spring 16 is fixedly connected inside the connecting groove 15, and the other end of the support spring 16 is fixedly connected inside the slot 12. By inserting the insert 1 into the mounting hole of the component to be fixed, pressing down the fixing head 2 causes the moving block 11 to move down. The top block 13 is squeezed and rotated by the inner wall of the mounting hole, compressing the support spring 16. After the insert 1 passes through the mounting hole, the support spring 16 rebounds, causing the top block 13 to pop out of the sliding groove 3, laying the foundation for subsequent fastening.

[0019] A slot 6 is provided on the upper end face of the rotating block 5. By inserting a tool into the slot 6 and rotating the rotating block 5, the rotating block 5 drives the fixing rod 9 and the threaded rod 10 to rotate. Under the limit of the sliding groove 3, the moving block 11 is pushed upward, so that the top block 13 fits tightly against the lower end face of the component below, which can firmly clamp the two components to be fixed and prevent loosening. When disassembling, rotate the rotating block 5 in the opposite direction to move the moving block 11 downward, press the top block 13 into the sliding groove 3 and the slot 12, and pull the fixing head 2 upward to remove the fastener. The support spring 16 drives the top block 13 to return to its original position, which is convenient for reuse next time. The whole design takes into account convenient installation, stable fixation and recycling, and can fix components of different thicknesses.

[0020] The inner wall of the mounting groove 4 is provided with a limiting groove 7, and the outer wall of the rotating block 5 is fixedly connected with a limiting ring 8, and the limiting ring 8 is located in the limiting groove 7. The limiting ring 8 rotates along the limiting groove 7 to ensure the stable rotation of the rotating block 5.

[0021] Working principle: When in use, first align the insert 1 with the mounting holes of the two parts to be fixed, apply pressure to insert the lower end of the insert 1 into the mounting hole until the lower end face of the fixing head 2 is in contact with the surface of the part to be fixed, and complete the initial positioning of the fastener; at this time, the sliding groove 3 on the lower part of the outer wall of the insert 1 is opposite to the inner wall of the mounting hole, which reserves space for the subsequent unfolding of the tightening structure. Press down on the fixing head 2. The fixing head 2 moves downward, causing the insert 1 and the moving block 11 inside the insert 1 to move downward. During the downward movement of the moving block 11, the inclined surface of the top block 13 inside the multiple slots 12 is pushed and squeezed by the inner wall of the mounting hole. The top block 13 gradually rotates into the slot 12 around the fixing shaft 14 at the lower end. At the same time, the support spring 16 in the connecting groove 15 on one side of the top block 13 is compressed to generate elastic force. The elastic force generated by the support spring 16 further assists the top block 13 to stick tightly to the inner wall of the mounting hole until the lower end of the insert 1 and the moving block 11 penetrate the mounting holes of the two parts to be fixed. The support spring 16 rebounds, causing the top block 13 to pop out of the slot 12 and extend out of the slide groove 3.

[0022] Insert a flathead screwdriver into the slot 6 on the upper surface of the rotating block 5, and rotate the tool to drive the rotating block 5 to rotate inside the mounting groove 4; the limiting ring 8 on the outer wall of the rotating block 5 rotates synchronously along the limiting groove 7 on the inner wall of the mounting groove 4. When the rotating block 5 rotates, it drives the fixing rod 9 fixed at the lower end to rotate synchronously, which in turn drives the threaded rod 10 at the lower end of the fixing rod 9 to rotate; when the threaded rod 10 rotates, under the limiting of the top block 13 by the sliding groove 3, the outer wall of the threaded rod 10 drives the moving block 11 to move upward along the threaded rod 10 through the threaded engagement, until the upper surfaces of the multiple top blocks 13 are tightly attached to the lower surface of the fixed component below, thus completing the fastening of the two fixed components.

[0023] To disassemble the fastener, rotate the rotating block 5 in the reverse direction. This causes the threaded rod 10 to rotate in the reverse direction via the fixed rod 9, and the moving block 11 moves downward along the threaded rod 10. The upper end face of the top block 13 disengages from the fixed component below. Press the multiple locking blocks into the sliding groove 3 and the locking slot 12, and pull the fixed head 2 upward. The fixed head 2 will then drive the insert 1 through the mounting hole. This completes the disassembly of the fastener. Simultaneously, the support spring 16 will cause the top block 13 to reset, making it convenient for the next use.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A direct-insertion metal fastener, comprising an insert (1), characterized in that: A fixing head (2) is fixedly connected to the upper end face of the insert (1). Multiple sliding grooves (3) are opened on the lower part of the outer wall of the insert (1), and the sliding grooves (3) are connected to the inside of the insert (1). An installation groove (4) is opened on the upper end face of the fixing head (2). A rotating block (5) is rotatably connected inside the installation groove (4). A fixing rod (9) is fixedly connected to the lower end face of the rotating block (5). A threaded rod (10) is fixedly connected to the lower end of the fixing rod (9). A moving block (11) is rotatably connected to the outer wall of the threaded rod (10) by thread. Multiple slots (12) corresponding to the sliding grooves (3) are opened on the outer wall of the moving block (11). A top block (13) is provided inside the slot (12). The ends of the multiple top blocks (13) that are far apart from each other are inclined, and the upper end face of the top block (13) is larger than the lower end face of the top block (13).

2. The through-hole metal fastener according to claim 1, characterized in that: The inner wall of the mounting groove (4) is provided with a limiting groove (7), and the outer wall of the rotating block (5) is fixedly connected with a limiting ring (8), and the limiting ring (8) is located in the limiting groove (7).

3. The through-hole metal fastener according to claim 1, characterized in that: A slot (6) is formed on the upper end face of the rotating block (5).

4. The through-hole metal fastener according to claim 1, characterized in that: The fixing rod (9) passes through the fixing head (2) and extends into the insert (1). The lower end of the threaded rod (10) is rotatably connected to the lower part of the insert (1).

5. The through-hole metal fastener according to claim 1, characterized in that: The lower end of the top block (13) is fixedly connected to a fixed shaft (14), and the two ends of the fixed shaft (14) are respectively rotated and extended into the two sides of the lower inner wall of the slot (12).

6. The through-hole metal fastener according to claim 1, characterized in that: Each of the top blocks (13) has a connecting groove (15) on its end face that is close to each other. A support spring (16) is fixedly connected inside the connecting groove (15), and the other end of the support spring (16) is fixedly connected inside the slot (12).

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