Screw

Abstract

The invention discloses a screw which is mainly characterized in that a rod body of the screw is provided with a plurality of channels which cross each other, threads of the screw are provided with a plurality of grooves and cutting edges formed on the peripheries of the grooves, and a convex tooth is formed between any two adjacent grooves. The positions of the convex teeth and the grooves of any two adjacent threads are exactly opposite, so that object fibers are cut rapidly through the multiple convex teeth and the multiple cutting edges to improve the cutting effect, enough space is provided for chip removal and chip containing in cooperation with the multiple grooves and the multiple channels, chips can be discharged rapidly, and the cutting efficiency is improved. And a proper amount of cuttings can be accommodated in the plurality of grooves and the plurality of channels after locking, so that the occlusion force and the locking property after locking are improved, and the screw is effectively prevented from loosening.

Description

Technical Field

[0001] The invention relates to a screw structure, in particular to a screw which increases chip removal and chip accommodation space, improves cutting effect and reduces material cracking. Background Art

[0002] See also Figure 1 and Figure 2 As shown, the conventional screw 1 comprises a rod body 11, and the rod body 11 has a first end and a second end formed at opposite ends, a head 12 disposed at the first end of the rod body 11, a tail 13 disposed at the second end of the rod body 11, and a plurality of spiral rings disposed on the thread 14 of the rod body 11, wherein each thread 14 has an upper thread surface 141 extending outward from the rod body 11 and facing the head 12, a lower thread surface 142 extending outward from the rod body 11 and facing the tail 13, and a thread crest 143 formed at the junction of the upper thread surface 141 and the lower thread surface 142, with reference to Figure 2 As shown, when the screw 1 is tightened, the tail portion 13 is first positioned against the surface of an object 2, and then a rotational torque is applied to the head portion 12, so that the tail portion 13 and the plurality of screw threads 14 are driven to cut downwardly into the object 2. When the screw 1 is completely screwed into the object 2, the screw 1 is tightened.

[0003] However, after actual use, it was found that the thread 14 of the screw 1 was fully threaded, resulting in a relatively large locking resistance for the multiple threads 14 during the process of being screwed into the object 2, which easily caused the multiple threads 14 to be excessively worn and blunted. The worn and blunted multiple threads 14 could not effectively damage the fibers of the object 2. In addition, there was not enough space between the rod 11 and the multiple threads 14 for chip removal and chip accommodation, so that the generated chips could only be slowly discharged outward along the narrow space between the multiple threads 14 and the rod 11. Not only did it cause the multiple chips to be unable to be quickly and smoothly discharged outward, resulting in increased locking resistance and reduced locking speed, but if the screw 1 continued to squeeze the multiple chips, it was more likely to cause the object 2 to crack. Moreover, insufficient chip accommodation space would also result in poor bite force and locking performance of the screw 1 after locking, causing the screw 1 to be easily loosened, which really needs to be improved. Summary of the invention

[0004] Therefore, the purpose of the present invention is to provide a screw that can effectively destroy the fibers of an object, improve the cutting effect, and provide sufficient space for chip accommodation and chip removal, thereby reducing the locking resistance and improving the bite force and locking performance after locking.

[0005] Therefore, the present invention discloses a screw, which comprises a rod body, a first end and a second end formed at opposite ends of the rod body, a head disposed at the first end, a tail disposed at the second end, and a plurality of spiral rings disposed on the thread of the rod body, wherein each thread has an upper thread surface facing the head, a lower thread surface facing the tail, and a thread crest formed at the junction of the upper thread surface and the lower thread surface;

[0006] A plurality of adjacent screw teeth are arranged at intervals along the axial direction on the rod body to define an outer peripheral surface on the rod body, and the outer peripheral surface has a plurality of setting surfaces arranged between the plurality of screw teeth, the outer peripheral surface has at least one mesh portion, and the mesh portion is arranged on at least one setting surface, the mesh portion has a plurality of grooves arranged alternately with each other, and a plurality of grooves are concavely arranged on the crests of the plurality of screw teeth, and a cutting edge is formed on the periphery of each groove, and a convex tooth is formed between any two adjacent grooves, and furthermore, the positions of the convex teeth and the grooves arranged on any two adjacent screw teeth are exactly opposite.

[0007] As a further improvement of the present invention, a plurality of the grooves are arranged in an arc shape.

[0008] As a further improvement of the present invention, a plurality of the grooves and a plurality of the protruding teeth are arranged on a portion of the thread teeth.

[0009] As a further improvement of the present invention, a plurality of mesh portions are arranged on adjacent arrangement surfaces.

[0010] As a further improvement of the present invention, a plurality of mesh portions are arranged on the spaced arrangement surface.

[0011] As a further improvement of the present invention, a spiral annular groove is concavely provided on at least one setting surface.

[0012] As a further improvement of the present invention, the textured portion is disposed on a partial surface of at least one setting surface.

[0013] As a further improvement of the present invention, the plurality of screw threads define a first thread segment and a second thread segment, and the second thread segment and the first thread segment are spaced apart from each other and are annularly disposed on the rod body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention effectively destroys the fibers of the object through the plurality of convex teeth and the plurality of cutting edges, thereby greatly improving the cutting effect. Meanwhile, the plurality of grooves and the plurality of channels allow the generated chips to pass through, and increase the chip removal and chip holding space, so that the plurality of chips can be quickly discharged outward, thereby greatly reducing the locking resistance, increasing the locking speed, and avoiding cracking of the material. Furthermore, the plurality of channels and the plurality of grooves can also accommodate an appropriate amount of chips, thereby increasing the fastening force between the screw and the object, thereby improving the bite force and locking property after locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the existing screws.

[0017] Figure 2 It is a schematic diagram of the use status of existing screws.

[0018] Figure 3 It is a schematic diagram of a first preferred embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of partial components of the first preferred embodiment.

[0020] Figure 5 yes Figure 3 AA line cross-section diagram.

[0021] Figure 6 It is a schematic diagram of the usage status of the first preferred embodiment.

[0022] Figure 7 It is a schematic diagram of a second preferred embodiment of the present invention.

[0023] Figure 8 It is a schematic diagram of a third preferred embodiment of the present invention.

[0024] Fig. 9 is another schematic diagram of the third preferred embodiment.

[0025] Fig.10 Schematic diagram of a fourth preferred embodiment of the present invention.

[0026] Explanation of symbols:

[0027] (Prior Art)

[0028] 1: Screw

[0029] 11: Rod body

[0030] 12: Head

[0031] 13: Tail

[0032] 14: Screw thread

[0033] 141: Upper tooth surface

[0034] 142: Lower tooth surface

[0035] 143: Tooth Peak

[0036] 2: Object

[0037] (The present invention)

[0038] 3: Screws

[0039] 31: Rod body

[0040] 32: Head

[0041] 33: Tail

[0042] 34: Screw thread

[0043] 35: Reticulated

[0044] 36: Spiral ring groove

[0045] 31A: Outer surface

[0046] 34A: First tooth segment

[0047] 34B: Second tooth segment

[0048] 311: Setting the surface

[0049] 341: Upper tooth surface

[0050] 342: Lower tooth surface

[0051] 343: Tooth Peak

[0052] 344: Groove

[0053] 345: convex teeth

[0054] 346: Cutting edge

[0055] 351: Slot

[0056] 4: Object DETAILED DESCRIPTION

[0057] The above and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings.

[0058] See also Figure 3 As shown, in a first preferred embodiment of the present invention, the screw 3 includes a rod body 31, and the rod body 31 has a first end and a second end formed at opposite ends, a head 32 arranged at the first end of the rod body 31, a tail 33 arranged at the second end of the rod body 31, and a plurality of spiral rings arranged on the rod body 31. The plurality of spiral teeth 34 are arranged at intervals along an axial direction to divide the outer peripheral surface 31A of the rod body 31 into a plurality of setting surfaces 311 arranged between the plurality of spiral teeth 34. At least one mesh portion 35 is recessed on the outer peripheral surface 31A, and the mesh portion 35 is specifically arranged on at least one setting surface 311. The mesh portion 35 has a plurality of grooves 351 that are recessed, and the plurality of grooves 351 cross and intersect each other. In this embodiment, the plurality of mesh portions 35 are arranged on adjacent setting surfaces 311, and the plurality of mesh portions 35 are preferably arranged on 5 to 6 adjacent setting surfaces 311.

[0059] See also Figure 3 and Figure 4 As shown, each screw thread 34 has an upper tooth surface 341 facing the head 32, and a lower tooth surface 342 facing the tail 33, and the upper tooth surface 341 and the lower tooth surface 342 are respectively extended outwardly from the rod body 31 and intersect to form a tooth peak 343. In addition, a plurality of grooves 344 are concavely provided on the plurality of tooth peaks 343, and the plurality of grooves 344 are spaced apart from each other so that a convex tooth 345 is formed between any two adjacent grooves 344, and a cutting edge 346 is formed on the periphery of each groove 344. In addition, the plurality of convex teeth 345 of one screw thread 34 are aligned with the plurality of grooves 344 of another adjacent screw thread 34, that is, the positions of the convex teeth 345 and the grooves 344 provided on any two adjacent screw threads 34 are exactly opposite, that is, as shown Figure 5 As shown, when any two screw threads 34 are completely overlapped when viewed from a top or bottom angle, the position where one screw thread 34 is provided with a plurality of the grooves 344 is exactly the position where the other adjacent screw thread 34 is provided with a plurality of the convex teeth 345. Conversely, the position where the one screw thread 34 is provided with a plurality of the convex teeth 345 is also the position where the other adjacent screw thread 34 is provided with a plurality of the grooves 344. In this embodiment, the plurality of the grooves 344 and the plurality of the cutting edges 346 are arranged in an arc shape, and the plurality of the grooves 344, the plurality of the convex teeth 345 and the plurality of the cutting edges 346 are arranged on 5 to 6 screw threads 34.

[0060] See also Figure 3 , Figure 4 and Figure 6As shown, when the screw 3 is locked, the tail 33 is first pressed against the surface of an object 4, and then a rotational torque is applied to the head 32, so that the tail 33 and the plurality of screw teeth 34 are driven to cut the object 4 downward. Since the plurality of screw teeth 34 are provided with a plurality of grooves 344, the locking resistance borne by the plurality of screw teeth 34 during the cutting can be greatly reduced. In combination with the plurality of convex teeth 345 and the plurality of cutting edges 346, the fibers of the object 4 are effectively cut off to avoid the loss of the increase in locking resistance caused by the plurality of fibers being entangled in the rod body 31, and the cutting effect can also be greatly improved. In addition, the design of the staggered positions of the convex teeth 345 provided on any two screw teeth 34 can achieve a multiple cutting effect, thereby helping to completely destroy the fibers of the object 4. In addition, The multiple grooves 351 of the mesh portion 35 greatly increase the space for chip removal and chip accommodation. Therefore, the generated chips can be quickly and smoothly discharged outward through the multiple grooves 344 and the multiple grooves 351, so that the screw 3 is not blocked by the multiple chips during the locking process and can be quickly screwed into the object 4, thereby improving the locking speed. At the same time, it can also avoid the situation where the multiple chips are accumulated and squeezed to cause the object 4 to crack. Moreover, when the screw 3 is screwed into the object 4, part of the chips can be accommodated in the multiple grooves 351 and the multiple grooves 344, thereby increasing the fastening force between the screw 3 and the object 4, and improving the bite force and locking property of the screw 3 after locking, so that the screw 3 will not be easily loosened from the object 4, and a better locking effect is achieved.

[0061] See also Figure 7 As shown, the second preferred embodiment of the present invention still includes the components described in the first embodiment, and its purpose and function are the same as those of the first embodiment, which will not be repeated here. The special feature of this embodiment is that a plurality of mesh portions 35 are provided on non-adjacent setting surfaces 311, that is, when one setting surface 311 is provided with a mesh portion 35, the setting surface 311 adjacent to the one setting surface 311 is not provided with a mesh portion 35 and is smoothly provided.

[0062] See also Figure 8 and Fig. 9As shown, the third preferred embodiment of the present invention still includes the components described in the first embodiment, and its purpose and function are the same as those of the first embodiment, which will not be repeated here, and the special features of this embodiment are: the screw 3 includes a first tooth segment 34A and a second tooth segment 34B, and the first tooth segment 34A and the second tooth segment 34B are respectively composed of a plurality of the screw teeth 34, the first tooth segment 34A and the second tooth segment 34B are spaced from each other and are not intersected, so that the screw 3 is arranged in a double screw tooth segment state, and at least one setting surface 3 11 is concavely provided with a spiral annular groove 36, and the present embodiment takes the case where a plurality of spiral annular grooves 36 and a plurality of reticulated portions 35 are alternately provided on a plurality of the setting surfaces 311 as an example, that is, when a reticulated portion 35 is provided on one of the setting surfaces 311, a setting surface 311 adjacent to the one setting surface 311 is provided with the spiral annular groove 36, and another setting surface 311 spaced apart from the one setting surface 311 by a setting surface 311 is provided with the reticulated portion 35, so that the plurality of the setting surfaces 311 are provided with the plurality of the reticulated portions 35 and the plurality of the spiral annular grooves 36 in sequence.

[0063] See also Fig.10 As shown, the fourth preferred embodiment of the present invention still includes the components described in the first embodiment, and its purpose and function are the same as those of the first embodiment, which will not be repeated here. The special feature of this embodiment is that the textured portion 35 is provided on a partial surface of at least one setting surface 311, and this embodiment takes the partial surfaces of multiple setting surfaces 311 as an example in which the textured portion 35 is provided, and the remaining surfaces of the multiple setting surfaces 311 that are not provided with the textured portion 35 are provided in a smooth state.

[0064] In summary, the screw of the present invention has a plurality of grooves, a plurality of convex teeth and a plurality of cutting edges formed on a plurality of thread teeth so as to reduce the locking resistance borne by the plurality of thread teeth during rotary cutting and effectively cut and destroy the fibers of the object. In combination with the plurality of grooves formed on the rod body, the chip removal and chip accommodation space is greatly increased, so that the generated chips can be quickly discharged outward through the plurality of grooves and the plurality of grooves, further reducing the locking resistance, increasing the locking speed, and preventing the object from cracking. At the same time, after locking, appropriate chips can be accommodated, which is more helpful to strengthen the bite force and locking property after locking, so that the screw is not easy to loosen.

[0065] The above description is only for explaining the preferred embodiments of the present invention, and it cannot be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the invention specification should still fall within the scope of the patent of the present invention.

Claims

1. A screw, comprising a rod body, a first end and a second end formed at opposite ends of the rod body, a head portion disposed at the first end, a tail portion disposed at the second end, and a plurality of spiral rings disposed on the thread of the rod body, wherein: Each screw thread has an upper tooth surface facing the head, a lower tooth surface facing the tail, and a tooth peak formed at the junction of the upper tooth surface and the lower tooth surface; characterized in that: A plurality of adjacent screw teeth are arranged at intervals along the axial direction on the rod body to define an outer peripheral surface on the rod body, and the outer peripheral surface has a plurality of setting surfaces arranged between the plurality of screw teeth, the outer peripheral surface has at least one mesh portion, and the mesh portion is arranged on at least one setting surface, the mesh portion has a plurality of grooves arranged alternately with each other, and a plurality of grooves are concavely arranged on the crests of the plurality of screw teeth, and a cutting edge is formed on the periphery of each groove, and a convex tooth is formed between any two adjacent grooves, and furthermore, the positions of the convex teeth and the grooves arranged on any two adjacent screw teeth are exactly opposite.

2. The screw according to claim 1, characterized in that: The plurality of grooves are arranged in an arc shape.

3. The screw according to claim 1, characterized in that: A plurality of the grooves and a plurality of the protruding teeth are arranged on a portion of the screw threads.

4. The screw according to claim 1, characterized in that: A plurality of mesh portions are arranged on adjacent arrangement surfaces.

5. The screw according to claim 1, characterized in that: A plurality of mesh portions are arranged on the spaced arrangement surface.

6. The screw according to claim 1, characterized in that: At least one of the setting surfaces is concavely provided with a spiral annular groove.

7. The screw according to claim 1, characterized in that: The mesh portion is arranged on a partial surface of at least one setting surface.

8. The screw according to claim 1, characterized in that: A plurality of the screw teeth define a first tooth segment and a second tooth segment, and the second tooth segment and the first tooth segment are spaced apart from each other and are annularly arranged on the rod body.

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