A fastener screw easy to assemble and disassemble

Abstract

The utility model relates to screw technical field especially easy to assemble and disassemble fastening screw, its technical scheme includes threaded rod and the installation hole for threaded rod insertion, still includes: the screw head of fixed connection in threaded rod one end, threaded rod is equipped with the thread of screw connection with installation hole one end close to screw head, locking mechanism sets up in the inside of threaded rod makes that threaded rod is fixed in installation hole. The utility model cooperates with the structure such as threaded rod, screw head, thread and locking mechanism, and the design of locking mechanism can ensure that the non-threaded portion of threaded rod enters installation hole quickly and is fixed. When needing to disassemble, opening locking mechanism only needs to rotate the thread on threaded rod, can make threaded rod easily unload. Using this design with locking mechanism, can reduce the torque of threaded rod, thereby reduces the risk of threaded rod damage.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to an easy-to-install and remove fastening screw. Background Technology

[0002] Screws are common fasteners, typically made of metal (such as steel, stainless steel, aluminum, etc.). Their main function is to securely connect two or more objects together by rotation. In existing technology, when the wood material is thick and a long screw must be used, mounting holes are usually drilled in the material first to allow the screw to pass through and be secured. During tightening and loosening, long screws require greater torque to be fully tightened or loosened, and excessive torque can easily cause thread deformation or damage, especially when the screw material is soft or unsuitable for bearing heavy forces. Damaged threads make future installation or disassembly more difficult, and may even prevent the screw from being properly secured or removed. Utility Model Content

[0003] The purpose of this invention is to address the problem in the prior art that when the wood material is thick and a long screw must be used, the long screw requires a greater torque to be fully screwed in or out, and excessive torque can easily cause the thread to deform or be damaged. Damaged threads make future installation or disassembly more difficult. This invention proposes an easy-to-install and easy-to-disassemble fastening screw.

[0004] The technical solution of this utility model is as follows: an easy-to-install and remove fastening screw, including a threaded rod and a mounting hole for inserting the threaded rod, and further including: a screw head fixedly connected to one end of the threaded rod, wherein the end of the threaded rod near the screw head is provided with a thread that is helically connected to the mounting hole; and a locking mechanism disposed inside the threaded rod so that the threaded rod is fixed in the mounting hole.

[0005] Optionally, the locking mechanism includes a stop plate slidably connected inside the threaded rod, with stop grooves on both sides of the stop plate. The outer wall of the threaded rod is provided with a plurality of insert rods arranged in a linear pattern and whose ends are inserted into the stop grooves. A stop block is slidably connected inside the end of the threaded rod near the screw head. A stop rod is fixedly connected to the end of the stop block away from the screw head. The end of the stop rod away from the stop block is fixedly connected to the end of the stop plate. A support ring is fixedly connected inside the threaded rod and movably sleeved with the stop rod. A return spring is provided in the middle of the support ring and the stop block and movably sleeved with the stop rod.

[0006] Optionally, the end of the screw head away from the threaded rod has a cross groove, and the end of the abutment away from the abutment rod is fixedly connected to a button that moves through the cross groove.

[0007] Optionally, a retaining ring is fixedly sleeved at one end of the insertion rod near the groove, and a push spring is movably sleeved at the other end of the insertion rod near the retaining ring. One end of the push spring is fixedly connected to the inner wall of the threaded rod, and the other end of the push spring is fixedly connected to the corresponding retaining ring.

[0008] Optionally, the end of the insert rod away from the groove is provided with a plug for inserting into the mounting hole.

[0009] Optionally, the pair of abutment grooves are arranged symmetrically with respect to the abutment rod as the center.

[0010] Optionally, the end of the plug away from the plug is configured as a spherical head.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] This invention utilizes the cooperation of a threaded rod, a screw head, threads, and a locking mechanism. The locking mechanism ensures that the non-threaded portion of the threaded rod quickly enters and is fixed in the mounting hole. When disassembly is required, opening the locking mechanism simply involves rotating the threads on the threaded rod, allowing it to be easily removed. This design with a locking mechanism reduces the torque on the threaded rod, thereby lowering the risk of damage. Attached Figure Description

[0013] Figure 1 A structural schematic diagram of an easy-to-install and disassemble fastening screw according to this utility model is provided;

[0014] Figure 2 for Figure 1 A partial cross-sectional structural diagram;

[0015] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0016] Figure 4 for Figure 2 A partial structural diagram.

[0017] Reference numerals: 1. Screw head; 11. Cross groove; 12. Button; 2. Threaded rod; 21. Thread; 22. Abutment block; 23. Abutment rod; 24. Support ring; 25. Return spring; 26. Abutment plate; 27. Abutment groove; 28. Insert rod; 281. Plug; 282. Snap ring; 283. Push spring. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example

[0025] like Figures 1 to 4As shown, this utility model proposes an easy-to-install and remove fastening screw, including a threaded rod 2 and a mounting hole for inserting the threaded rod 2. The mounting hole is a hole drilled into wood. It also includes: a screw head 1 fixedly connected to one end of the threaded rod 2; the end of the threaded rod 2 near the screw head 1 has a thread 21 that is helically connected to the mounting hole; the thread 21 is only a short section on the threaded rod 2, its function being to reduce the torque when the threaded rod 2 rotates in the mounting hole, preventing damage from excessive torque; and a locking mechanism, located inside the threaded rod 2, to fix the threaded rod 2 in the mounting hole.

[0026] Furthermore, the locking mechanism includes a stop plate 26 slidably connected within the threaded rod 2. The stop plate 26 has stop grooves 27 on both sides. The outer wall of the threaded rod 2 has several linearly arranged insert rods 28, the ends of which engage with the stop grooves 27. One end of each insert rod 28, away from the stop groove 27, has a plug 281 for inserting into a mounting hole. The plug 281 is tapered, its tip partially inserting when inserted into the mounting hole. The other end of the insert rod 28, away from the plug 281, is a spherical abutment. This spherical abutment reduces friction between the insert rod 28 and the stop groove 27, preventing the insert rods 28 from failing to respond after the stop groove 27 has blocked multiple insert rods. A stop block 22 is slidably connected inside the threaded rod 2 near the screw head 1. A stop rod 23 is fixedly connected to the end of the stop block 22 away from the screw head 1. A pair of stop grooves 27 are symmetrically arranged around the stop rod 23. A cross groove 11 is provided at the end of the screw head 1 away from the threaded rod 2, for inserting a Phillips head screwdriver. A button 12 that moves through the cross groove 11 is fixedly connected to the end of the abutment block 22 away from the abutment rod 23. The end of the abutment rod 23 away from the abutment block 22 is fixedly connected to the end of the abutment plate 26. A support ring 24 that is movably sleeved with the abutment rod 23 is fixedly connected inside the threaded rod 2. A return spring 25 that is movably sleeved with the abutment rod 23 is provided in the middle of the support ring 24 and the abutment block 22. The return spring 25 is designed so that the abutment plate 26 can be returned to its original position by the elastic force of the return spring 25 after the button 12 is pressed by a tool (cross screwdriver). Under normal conditions, the abutment plate 26 drives the abutment groove 27 to press against multiple insert rods 28. After the insert rods 28 are pressed, they will disengage from the threaded rod 2.

[0027] Furthermore, a retaining ring 282 is fixedly fitted at the end of the insertion rod 28 near the abutment groove 27, and a push spring 283 is movably fitted at the end of the insertion rod 28 near the retaining ring 282. The push spring 283 ensures that the insertion rod 28 automatically retracts into the threaded rod 2 when it is not in contact with the abutment groove 27. One end of the push spring 283 is fixedly connected to the inner wall of the threaded rod 2, and the other end of the push spring 283 is fixedly connected to the corresponding retaining ring 282.

[0028] In this embodiment, when easy-to-install and easy-to-remove fastening screws are required, such as Figure 1As shown, first, use a drilling tool to drill the mounting hole in the material. Then, insert the end of the threaded rod 2 away from the screw head 1 into the mounting hole. At this time, insert the tool into the cross groove 11 on the screw head 1 and press it firmly against the button 12. After being pressed, the button 12 will drive the abutment block 22 to move into the threaded rod 2. The abutment block 22 will then drive the abutment rod 23 and the abutment plate 26 to move in sequence. However, the abutment groove 27 on the abutment plate 26 cannot abut against multiple insertion rods 28 in sequence. Immediately afterwards, the insertion rod 28 is pushed by the elastic force of the push spring 283, which pushes the retaining ring 282 and drives the insertion rod 28 to retract into the threaded rod 2. The end of the insertion rod 28 away from the plug 281 is still firmly against the inner wall of the abutment groove 27. Then, use the tool to turn the screw head 1. Since the thread 21 on the threaded rod 2 is helically connected to the mounting hole, the entire threaded rod 2 can be helically inserted into the mounting hole. Finally, the tool can be pulled out of the cross groove 11 on the screw head 1. At this time, the stop block 22, through the elastic pushing force of the return spring 25, will press against the screw head 1, and the button 12 will return to its original position. Figure 1 The state shown is as follows. The stop plate 26 will then re-engage the multiple insert rods 28, causing the insert rods 28 to disengage from the threaded rod 2 and insert into the mounting hole through the plug 281. At this point, the threaded rod 2 cannot be directly disengaged or rotated within the mounting hole, thus preventing the threaded rod 2 from being installed in the mounting hole with excessive torque. When it is necessary to remove the threaded rod 2 from the mounting hole, simply insert a tool into the cross groove 11 and press against the button 12, then reverse the above operation. This is quick and easy to operate, and will not be elaborated upon here.

[0029] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An easy-to-install and remove fastening screw, comprising a threaded rod (2) and a mounting hole for inserting the threaded rod (2), characterized in that, Also includes: A screw head (1) is fixedly connected to one end of the threaded rod (2), and the end of the threaded rod (2) near the screw head (1) is provided with a thread (21) that is helically connected to the mounting hole. A locking mechanism is provided inside the threaded rod (2) so that the threaded rod (2) is fixed in the mounting hole.

2. The easy-to-install and easy-to-remove fastening screw according to claim 1, characterized in that, The locking mechanism includes a stop plate (26) slidably connected in the threaded rod (2), with stop grooves (27) on both sides of the stop plate (26). The outer wall of the threaded rod (2) is provided with a plurality of insert rods (28) arranged in a linear pattern and whose ends are inserted into the stop grooves (27). A stop block (22) is slidably connected inside the end of the threaded rod (2) near the screw head (1). A stop rod (23) is fixedly connected to the end of the stop block (22) away from the screw head (1). The end of the stop rod (23) away from the stop block (22) is fixedly connected to the end of the stop plate (26). A support ring (24) is fixedly connected inside the threaded rod (2) and movably sleeved with the stop rod (23). A return spring (25) is provided in the middle of the support ring (24) and the stop block (22) and movably sleeved with the stop rod (23).

3. The easy-to-install and easy-to-remove fastening screw according to claim 2, characterized in that, The screw head (1) has a cross groove (11) at the end away from the threaded rod (2), and the abutment (22) is fixedly connected to a button (12) that moves through the cross groove (11) at the end away from the abutment rod (23).

4. The easy-to-install and easy-to-remove fastening screw according to claim 2, characterized in that, Each of the insert rods (28) is fixedly fitted with a retaining ring (282) at one end near the groove (27), and a push spring (283) is movably fitted at one end of the insert rod (28) near the retaining ring (282). One end of the push spring (283) is fixedly connected to the inner wall of the threaded rod (2), and the other end of the push spring (283) is fixedly connected to the corresponding retaining ring (282).

5. The easy-to-install and easy-to-remove fastening screw according to claim 2, characterized in that, The end of the insert (28) away from the groove (27) is provided with a plug (281) for inserting into the mounting hole.

6. The easy-to-install and easy-to-remove fastening screw according to claim 2, characterized in that, The pair of abutment grooves (27) are arranged symmetrically with the abutment rod (23) as the center.

7. The easy-to-install and easy-to-remove fastening screw according to claim 2, characterized in that, The end of the plug (28) away from the plug (281) is configured as a spherical abutment.

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