Fastener

Abstract

A fastener mainly includes a shank on which an auxiliary unit alternates with a threaded section. The auxiliary unit includes a plurality of tapering members located between any two threads of the threaded section and a channel formed between any two tapering members. The tapering members and the channels cooperate to sever wood fibers of a workpiece when a drilling operation of the fastener is executed, thereby assisting the threads in attaining a multi-cutting effect. The existence of the channels enhances the effect of removing cut chips and accommodating remaining cut chips. The tapering members can provide the multi-point engagement with the workpiece to attain a better fastening effect.

Description

[Technical Field]

[0001] The present invention relates to the structure of a locking member, and more particularly to a locking member that increases the locking force and prevents the locking from loosening. [Previous Technology]

[0002] Referring to Figure 1, a conventional screw 1 includes a rod body 11, a head 12 formed at one end of the rod body 11, a tail 13 formed at the other end of the rod body 11 opposite to the head 12, and a threaded segment 14 encircling the peripheral surface of the rod body 11; wherein the threaded segment 14 is composed of a plurality of threads 141, and the threads 141 extend from the tail 13 toward the head 12, while the tail 13 is provided in the form of a drill tip; when locking, the tail 13 abuts against the surface of a locking object 2, and a tool (not shown in the figure) is used to apply a rotation to the head 12. Torque causes the tail 13 to compress the locking compound 2 under torque propulsion, and drills and enters the locking compound 2 in a progressive spiral manner until the thread 141 located at the tail 13 is screwed into the locking compound 2. Then, the subsequent threads 141 cut the wood fibers in the locking compound 2, so that the rod 11 enters the locking compound 2 through the cutting of the locking compound 2 by the threads 141. At the same time, the gap between any two threads 141 is used to discharge some of the chips generated during the cutting until the head 12 is flat against the surface of the locking compound 2, thus achieving the locking and positioning effect.

[0003] However, after use, it was found that although the threads 141 can cut the locking compound 2 when screwed in, in the overall locking process, the threads 141 can only enter through the cutting generated by screwing in. As a result, the threads 141 cannot effectively cut the wood fibers of the locking compound 2 when screwing in, causing the chips to easily wrap around the rod 11, which will increase the locking resistance. This will not only slow down the locking speed into the locking compound 2, but also cause the chip removal to be obstructed due to the chip wrapping. In severe cases, it will cause the locking material to crack during the locking process. It is necessary to improve this. [Summary of the Invention]

[0004] Therefore, the object of the present invention is to provide a locking component that can effectively improve the cutting efficiency of screwing, while rapidly discharging chips and reducing locking resistance during the locking process, and achieving a stable positioning effect after locking.

[0005] Therefore, the locking member of the present invention includes a rod body, a head formed at one end of the rod body, a tail formed at the other end of the rod body opposite to the head, a threaded segment encircled on the peripheral surface of the rod body, and an auxiliary unit encircled on the rod body and alternately arranged with the threaded segment; wherein, the auxiliary unit has a plurality of pointed cones located between two of the threads, and a channel formed between any two of the pointed cones, each of the pointed cones extending outward from the peripheral surface and gradually tapering to have a pointed cone point; thus, when the locking member is positioned and locked on the locking body, in addition to increasing the screw-in drilling effect of the locking by the threaded segment, the pointed cones can also be used to lock the locking member. The channels assist in cutting the uncut wood fibers of the locking compound by the pointed conical blocks, preventing the rod from being excessively entangled by the wood fibers. They also crush and reduce the blocky chips generated during the cutting of the locking compound, greatly reducing the resistance generated during the locking process. Furthermore, the channels help to discharge some of the chips generated during locking and provide some chip storage, which helps prevent the locking component from being excessively squeezed by the chips and causing cracking. At the same time, the pointed points of the conical blocks can play a multi-point interlocking effect with the locking compound, thereby greatly improving the fastening force after locking, so as to achieve a stable, fast and labor-saving locking and positioning effect.

Implementation Method

[0006] The foregoing description and other technical contents, features and effects of the present invention will become clear in the following detailed description of the preferred embodiments with reference to the accompanying drawings.

[0007] Referring to FIG2, in a first preferred embodiment of the present invention, the locking member 3 includes a rod body 31, a head 32 formed at one end of the rod body 31, a tail 33 opposite to the head 32 and formed at the other end of the rod body 31, and a threaded segment 34; wherein the peripheral surface 31a of the rod body 31 is provided for the threaded segment 34 to be arranged around it, and the threaded segment 34 is composed of a plurality of threads 341.

[0008] Continuing from the foregoing, the rod body 31 is further provided with an auxiliary unit 35 that is staggered with the threaded section 34. The auxiliary unit 35 has a plurality of pointed cones 351 formed between two threads 341, and a channel 352 formed between any two pointed cones 351. Each pointed cone 351 extends outward from the peripheral surface 31a and gradually tapers to a point 351a. At the same time, the pointed cone 351a extends a reference line R towards the peripheral surface 31a of the rod body 31. In this embodiment, the pointed cone 351a is perpendicular to the reference line R. The orientation of the rim surface 31a is set as shown in Figure 2. Of course, the cone point 351a can also be set at an angle θ that is not perpendicular to the rim surface 31a, with the reference line R as the reference, as shown in the second preferred embodiment in Figure 4. The following description only uses Figure 2 as an example. Furthermore, a drill tip 331 is formed on the tail 33, so that the auxiliary unit 35 extends upward from the drill tip 331, as shown in Figures 2 and 4. Of course, the auxiliary unit 35 can also be set in a way that does not extend upward from the drill tip 331, as shown in the third and fourth preferred embodiments in Figures 5 and 6. The following description only uses Figure 2 as an example.

[0009] Referring to Figures 2 and 3, in use, the drill tip 331 of the tail 33 is pressed against the surface of a locking compound 4, and a rotational torque is applied by the head 32 to drive the tail 33 to create a drilling action on the locking compound 4 and enter the locking compound 4. At this time, the thread 341 located on the tail 33 is also gradually guided by the tail 33 to cut the wood fibers of the locking compound 4, and then the pointed cone 351 engages with the thread. 341, to cut the uncut wood fibers of the thread 341, so that the wood fibers that are wrapped around the tail 33 in the early stage of drilling and locking are cut off. This not only reduces the locking torque generated in the early stage of locking, but also, with the assistance of the pointed cone 351 located at the tail 33, works with the thread 341 to produce continuous cutting operations, which can greatly reduce the locking time and force, and is beneficial to the speed of subsequent thread 341 attack. And appropriately using the pointed cone 351 In conjunction with the auxiliary cutting of excessive wood fibers wrapped around the rod 31, the locking member 3 is prevented from being hindered by the entanglement of wood fibers. At the same time, the chips generated by the threads 341 and the cone blocks 351 during the cutting process can also be accommodated by the channel 352 between the cone blocks 351. The gap formed between each channel 352 and the threads 341 can accommodate some chips, which not only provides a stable locking position for the locking member 3, but also helps to guide some chips outward. This prevents the peripheral surface 31a of the rod 31 from being compressed by too many chips, thus hindering the locking speed. It also prevents the material from cracking due to the compression of too many chips in the locking compound 4. When the locking member 3 is locked and positioned in the locking compound 4, the cone points 351a of the cone blocks 351 have a multi-point interlocking effect with the locking compound 4, which effectively improves the locking and fastening force.

[0010] Referring to Figure 7, the fifth preferred embodiment of the present invention still includes the main components such as the rod 31, head 32, tail 33, threaded section 34, and auxiliary unit 35 described in the previous embodiment. The difference between this embodiment and the previous embodiment is that the tail 33 is polygonal, and a cutting edge 332 is formed at the junction of any two sides. Of course, the polygonal configuration of the tail 33 can also be used in Figures 4, 5, and 6, as shown in the sixth preferred embodiment in Figure 8, the seventh preferred embodiment in Figure 9, and the eighth preferred embodiment in Figure 10. Therefore, by having a polygonal structure for the tail 33, it is advantageous to... The cutting edge 332 of the tail 33 can help the drill tip 331 of the tail 33 to be quickly positioned on the locking compound 4 (not shown in the figure), which helps to strengthen the initial locking strength of the tail 33, thereby improving the resistance encountered during the initial locking process. In addition, the tail 33 can cooperate with the thread 341, the cone block 351 and the channel 352 to achieve multiple cutting effects. This not only helps to increase the speed of locking, but also allows the polygonal shape of the tail 33 to achieve a tight fastening force with the locking compound 4, effectively achieving a stable overall locking and positioning effect for the locking component 3.

[0011] In summary, the locking component of the present invention mainly features an auxiliary unit arranged in a ring on the rod body, intersecting with the threaded section. This auxiliary unit forms a plurality of pointed cones between any two threads of the threaded section, and a channel is formed between any two of these pointed cones. The overall shape of the auxiliary unit on the rod body not only facilitates the locking component's ability to cut the uncut wood fibers of the locking compound during locking by using these pointed cones, but also crushes and reduces the blocky chips generated from rotary cutting of the locking compound. Miniaturization prevents the rod from being excessively entangled by the wood fibers, thus providing stable positioning and reducing the locking torque generated in the initial locking stage. Furthermore, the engagement between the channels and the threads not only removes the chips generated during drilling but also allows some chips to remain, thereby reducing locking resistance and torque, effectively improving locking efficiency, and preventing material cracking. Finally, the pointed cones create a multi-point interlocking effect with the locking material, greatly enhancing the speed and tightness of the locking process.

[0012] However, the above description is only for illustrating preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All simple equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present invention should still fall within the scope of the patent of the present invention. [Simplified Explanation of the Diagram]

[0013] Figure 1 is a schematic diagram of a conventional screw. Figure 2 is a schematic diagram of a first preferred embodiment of the present invention. Figure 3 is a schematic diagram of the locking state of the first preferred embodiment. Figure 4 is a schematic diagram of a second preferred embodiment of the present invention. Figure 5 is a schematic diagram of a third preferred embodiment of the present invention. Figure 6 is a schematic diagram of a fourth preferred embodiment of the present invention. Figure 7 is a schematic diagram of a fifth preferred embodiment of the present invention. Figure 8 is a schematic diagram of a sixth preferred embodiment of the present invention. Figure 9 is a schematic diagram of a seventh preferred embodiment of the present invention. Figure 10 is a schematic diagram of an eighth preferred embodiment of the present invention.

Claims

1. A locking member comprising a rod body, a head formed at one end of the rod body, a tail formed opposite to the head at the other end of the rod body, and a threaded segment; wherein, The peripheral surface of the rod body is provided for the threaded section, which is composed of a plurality of threads. A drill tip is formed on the tail. The rod body is characterized by having an auxiliary unit arranged in an alternating manner with the threaded section. The auxiliary unit extends upward from the drill tip and has a plurality of pointed cones located between any two threads, and a channel formed between any two pointed cones. Each pointed cone extends outward from the peripheral surface and gradually tapers to a point with a pointed tip. In addition, the tail is polygonal and a cutting edge is formed at the junction of any two sides.

2. The locking element according to claim 1, wherein, A reference line extends from the pointed tip to the peripheral surface of the rod, and the reference line is inclined to the peripheral surface.

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