Screw

Abstract

The invention discloses a screw, which is mainly characterized in that the head part of the screw is provided with a top surface, a cone opposite to the top position, a plurality of cutting teeth arranged along the outer periphery of the top surface, and accommodating parts and convex ribs which are arranged on the cone in a staggered manner, so that the plurality of cutting teeth can be used for quickly destroying the fibers of an object and cutting off the generated burrs; meanwhile, the multiple convex ribs assist in rotary cutting, generated cuttings are guided into the multiple containing parts, enough chip containing space is provided in cooperation with the multiple containing parts, the multiple fibers are prevented from being wound around the head, the generated cuttings cannot be accumulated on the periphery of the head, the screw can be tightly attached to an object, and the service life of the screw is prolonged. The locking resistance is greatly reduced, and the flatness of the locked screw is improved.

Description

Technical Field

[0001] The invention relates to a screw structure, in particular to a screw capable of effectively chopping fibers, scraping off burrs and increasing chip holding space. Background Art

[0002] See also Figure 1 and Figure 2 As shown, the existing screw 1 includes a head 11, a rod 12 extending outward from the head 11, a tail 13 arranged on the rod 12 and opposite to the head 11, and a plurality of screw threads 14 arranged on the rod 12 in a spiral ring, wherein the head 11 has a top surface 111 and a cone 112 opposite to the top surface 111 and connected to the rod 12. During the locking process of the screw 1, the plurality of screw threads 14 are used to rotary cut an object 2, and a locking hole 21 is rotary cut on the surface 22 of the object 2. During the process of the plurality of screw threads 14 being gradually rotary cut downward, the rod 12 is driven to gradually sink into the object 2, and then the locking hole 21 is pushed and squeezed by the cone 112 of the head 11 until the top surface 111 is flush with the surface 22 of the object 2, so that the locking operation of the screw 1 can be completed.

[0003] However, after actual use, it was found that in the process of the multiple screw teeth 14 cutting the object 2 downward, part of the fibers of the object 2 are likely to protrude outward from the locking hole 21 to form burrs. In addition, since the cone 112 of the head 11 is composed of a smooth surface, it not only cannot provide a chip space, but the cone 112 can only squeeze but cannot effectively cut the multiple fibers, resulting in the burrs around the locking hole 21 cannot be effectively scraped off. At the same time, the multiple fibers that have not been cut are likely to be entangled outside the head 11. In the process of the screw 1 being screwed downward, the head 11 will also be hindered by the elastic recovery force of the multiple fibers, thereby increasing the locking resistance and causing the screw 1 to be unable to fit tightly with the object 2. If the multiple fibers are continuously squeezed, the object 2 is more likely to expand and crack. This problem needs to be improved. Summary of the invention

[0004] Therefore, the object of the present invention is to provide a screw that can assist in cutting fibers of an object, effectively scrape off burrs and increase chip space, thereby reducing locking resistance and improving flatness after locking.

[0005] Therefore, the present invention discloses a screw, which comprises a head, a rod extending outward from the head, a tail disposed on the rod and opposite to the head, and a plurality of spiral rings disposed on the rod, wherein the head has a top surface and a cone opposite to the top surface and connected to the rod;

[0006] The head also has a plurality of cutting teeth arranged along the outer periphery of the top surface and connected in sequence, a plurality of receiving portions recessed on the cone, and convex ribs respectively formed between any two adjacent receiving portions, and the plurality of receiving portions and the plurality of convex ribs are located between the plurality of cutting teeth and the rod body, wherein each cutting tooth has a first wall surface, a second wall surface connected to the first wall surface, and a third cutting edge arranged along the connection between the first wall surface and the second wall surface, and a first cutting edge is formed on the first wall surface, a second cutting edge connected to the first cutting edge is formed on the second wall surface, and each second cutting edge is respectively connected between any two adjacent first wall surfaces, and each receiving portion has a groove, and an auxiliary groove arranged along the outer periphery of the groove, and the groove extends from the cone body toward the rod body, and each convex rib is located exactly between any two adjacent auxiliary grooves.

[0007] As a further improvement of the present invention, the area of ​​the plurality of auxiliary grooves is smaller than the area of ​​the plurality of grooves.

[0008] As a further improvement of the present invention, the number of the plurality of cutting teeth is twice the number of the plurality of accommodating portions.

[0009] As a further improvement of the present invention, a plurality of the grooves are connected to a part of the cutting teeth, and a plurality of the auxiliary grooves are connected to the remaining cutting teeth.

[0010] As a further improvement of the present invention, the cone defines a plurality of base lines, and the plurality of base lines extend radially outward from the center of the cone, and the plurality of ribs are extended along the plurality of base lines.

[0011] As a further improvement of the present invention, the cone defines a plurality of baselines, and the plurality of baselines extend radially outward from the center of the cone, and the plurality of ribs extend from the plurality of cutting teeth toward the rod body and are arranged obliquely with respect to the plurality of baselines.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When the screw of the present invention is locked, the fibers around the locking hole of the object are effectively cut off by the multiple cutting teeth to avoid the loss of the multiple fibers being entangled in the head, and the burrs around the locking hole are scraped off. Furthermore, the multiple ribs can not only assist in rotary cutting of the multiple fibers, but also push the generated chips into the multiple accommodating parts, and cooperate with the multiple accommodating parts to provide sufficient space for chips, so that the screw can fit tightly with the object, and no excess chips or fibers will be accumulated around the head, thereby reducing the locking resistance and increasing the flatness of the screw after locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the existing screws.

[0015] Figure 2 It is a schematic diagram of the use status of existing screws.

[0016] Figure 3 It is a stereogram of a first preferred embodiment of the present invention.

[0017] Figure 4 yes Figure 3 AA line cross-section diagram.

[0018] Figure 5 It is a schematic diagram of the usage status of the first preferred embodiment.

[0019] Figure 6 is a top view of the second preferred embodiment.

[0020] Explanation of symbols:

[0021] (Prior Art)

[0022] 1: Screw

[0023] 11: Head

[0024] 12: Rod body

[0025] 13: Tail

[0026] 14: Screw thread

[0027] 111: Top

[0028] 112: Cone

[0029] 2: Object

[0030] 21: Locking hole

[0031] 22: Surface

[0032] (The present invention)

[0033] 3: Screws

[0034] 31: Head

[0035] 32: Rod body

[0036] 33: Tail

[0037] 34: Screw thread

[0038] 311: Top

[0039] 312: Cone

[0040] 313: Cutting Teeth

[0041] 314: Accommodation

[0042] 315: ribs

[0043] 3131: First wall

[0044] 3131A: First cutting edge

[0045] 3132: Second wall

[0046] 3132A: Second cutting edge

[0047] 3133: The Third Cutting Edge

[0048] 3141: Groove

[0049] 3142: Auxiliary slot

[0050] 4: Object

[0051] 41: Locking hole

[0052] 42: Surface DETAILED DESCRIPTION

[0053] 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.

[0054] See also Figure 3 As shown in the first preferred embodiment of the present invention, the screw 3 includes a head 31, a rod 32 connected to the head 31, a tail 33 provided on the rod 32, and a plurality of spiral rings provided on the rod 32. The tail 33 and the head 31 are provided at opposite ends of the rod 32. The head 31 has a top surface 311, a cone 312 opposite to the top surface 311, and the cone 312 is gradually inclined from its periphery toward its center and connected to the rod 32. A plurality of screw threads 34 are provided along the outer periphery of the top surface 311. The cutting teeth 313 are connected in sequence, a plurality of receiving portions 314 are recessed on the cone 312, and a plurality of convex ribs 315 are arranged at intervals, and each convex rib 315 is located between any two adjacent receiving portions 314, and the plurality of receiving portions 314 and the plurality of convex ribs 315 are located between the plurality of cutting teeth 313 and the rod body 32. In this embodiment, the cone 312 defines a plurality of baselines R, and the plurality of baselines R extend radially outward from the center of the cone 312, and the plurality of convex ribs 315 are extended along the plurality of baselines R, that is, Figure 4 As shown, each convex rib 315 extends from the vicinity of the cutting tooth 313 along the corresponding baseline R toward the rod body 32. In addition, each accommodating portion 314 gradually expands from the direction of the rod body 32 toward the direction of the plurality of cutting teeth 313, so that each convex rib 315 gradually decreases from the direction of the rod body 32 toward the direction of the cutting teeth 313.

[0055] See also Figure 3As shown, each cutting tooth 313 has a first wall surface 3131, a second wall surface 3132 connected to the first wall surface 3131, and a third cutting edge 3133 formed at the junction of the first wall surface 3131 and the second wall surface 3132, and a first cutting edge 3131A is formed on the first wall surface 3131, and a second cutting edge 3132A connected to the first cutting edge 3131A is formed on the second wall surface 3132, and both ends of the second cutting edge 3132A of each cutting tooth 313 are respectively connected to two adjacent first walls 3131, so that the plurality of cutting teeth 313 are stepped and connected in sequence, so that when the screw 3 is screwed and locked, it can pass through the plurality of first cutting edges. 3131A and multiple third cutting blades 3133 cut fibers. In addition, each accommodating portion 314 has a groove 3141 and an auxiliary groove 3142 arranged along the periphery of the groove 3141, and each convex rib 315 is located between any two adjacent auxiliary grooves 3142. At the same time, each convex rib 315 is also located between any two adjacent grooves 3141, and the area of ​​the multiple auxiliary grooves 3142 is smaller than the area of ​​the multiple grooves 3141. In addition, the number of the multiple cutting teeth 313 is twice the number of the multiple accommodating portions 314, so that the multiple grooves 3141 are connected to part of the cutting teeth 313, and the multiple auxiliary grooves 3142 are connected to the remaining cutting teeth 313.

[0056] See also Figure 3 , Figure 4 and Figure 5As shown, when the screw 3 is locked, the tail portion 33 is first pressed against the surface 42 of an object 4, and then the object 4 is cut downward by the tail portion 33 and the plurality of screw teeth 34, so that the object 4 is cut to form a locking hole 41. When the tail portion 33 and the plurality of screw teeth 34 are cut downward to drive the rod body 32 to gradually bury into the locking hole 41 of the object 4, the chips and uncut fibers generated during the cutting process will move outward along the plurality of screw teeth 34, so that the plurality of chips and fibers are accumulated at the periphery of the locking hole 41. At this time, the first cutting edge 3131A, the second cutting edge 3132A and the third cutting edge 3133 of the plurality of cutting teeth 313 effectively destroy the fibers that are not cut by the plurality of screw teeth 34, and scrape off the burrs formed at the periphery of the locking hole 41, so as to prevent the plurality of fibers from being entangled in the head The screw 31 is provided with a plurality of protruding ribs 315, and the plurality of protruding ribs 315 are provided with a plurality of protruding ribs 315. The protruding ribs 315 are provided with a plurality of protruding ribs 315, and the plurality of protruding ribs 315 are provided with a plurality of protruding ribs 315. The protruding ribs 315 are provided with a plurality of protruding ribs 315, and the plurality of protruding ribs 315 are provided with a plurality of protruding ribs 315. The protruding ribs 315 are provided with a plurality of protruding ribs 315, and the plurality of protruding ribs 315 are provided with a plurality of protruding ribs 315. The protruding ribs 3141 are provided with a plurality of protruding ribs 315, and the plurality of protruding ribs 315 are provided with a plurality of protruding ribs 315. The protruding ribs 3141 are provided with a plurality of protruding ribs 315, and the plurality of protruding ribs 3141 are provided with a plurality of protruding ribs 315. The ...

[0057] See also Figure 6 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: the multiple ribs 315 extend from the multiple cutting teeth 313 toward the rod body 32, and are inclined with the multiple baselines R, and the multiple ribs 315 can be designed with different inclined directions according to actual use requirements. Therefore, when the screw 3 is locked, the fibers can be pushed and peeled by the multiple ribs 315, and the generated chips can be guided into the multiple accommodating portions 314 to avoid excessive chips or fibers from accumulating around the head 31, thereby reducing the locking resistance and improving the flatness of the screw 3 after locking.

[0058] To summarize the above, the screw of the present invention has a receiving portion and a convex rib arranged in sequence and staggered on the cone, and a plurality of cutting teeth are provided on the outer periphery of the top surface, so that the fibers of the object can be cut by the plurality of cutting teeth, and the burrs on the periphery of the locking hole of the object can be removed at the same time, so as to avoid the head being entangled by the plurality of fibers and causing the increase of locking resistance. At the same time, the plurality of convex ribs can not only assist in rotary cutting of the plurality of fibers, but also guide the generated chips into the receiving portion. Combined with the fact that the receiving portion has sufficient space for chips, the screw and the object can be tightly combined, and excess chips or fibers can be prevented from accumulating on the periphery of the head, which is more conducive to reducing the generation of locking resistance, and the screw can be smoothly locked into the object.

[0059] 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 head, a rod extending outward from the head, a tail disposed on the rod and opposite to the head, and a plurality of spiral rings disposed on the rod, wherein: The head has a top surface and a cone opposite to the top surface and connected to the rod body; the characteristics are: The head also has a plurality of cutting teeth arranged along the outer periphery of the top surface and connected in sequence, a plurality of receiving portions recessed on the cone, and convex ribs respectively formed between any two adjacent receiving portions, and the plurality of receiving portions and the plurality of convex ribs are located between the plurality of cutting teeth and the rod body, wherein each cutting tooth has a first wall surface, a second wall surface connected to the first wall surface, and a third cutting edge arranged along the connection between the first wall surface and the second wall surface, and a first cutting edge is formed on the first wall surface, a second cutting edge connected to the first cutting edge is formed on the second wall surface, and each second cutting edge is respectively connected between any two adjacent first wall surfaces, and each receiving portion has a groove, and an auxiliary groove arranged along the outer periphery of the groove, and the groove extends from the cone body toward the rod body, and each convex rib is located exactly between any two adjacent auxiliary grooves.

2. The screw according to claim 1, characterized in that: The areas of the plurality of auxiliary grooves are smaller than the areas of the plurality of grooves.

3. The screw according to claim 1, characterized in that: The number of the plurality of cutting teeth is twice the number of the plurality of accommodating portions.

4. The screw according to claim 3, characterized in that: A plurality of the grooves are connected to a part of the cutting teeth, and a plurality of the auxiliary grooves are connected to the remaining cutting teeth.

5. The screw according to claim 1, characterized in that: The cone defines a plurality of base lines, and the plurality of base lines extend radially outward from the center of the cone, and the plurality of ribs are extended along the plurality of base lines.

6. The screw according to claim 1, characterized in that: The cone defines a plurality of base lines, and the plurality of base lines extend radially outward from the center of the cone, and the plurality of convex ribs extend from the plurality of cutting teeth toward the rod body and are arranged obliquely with the plurality of base lines.

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