TWM584843U - Screw capable of cutting off fibers - Google Patents

Abstract

A screw capable of cutting fibers includes a rod body and a spiral portion formed on the surface of the rod body, the spiral portion includes a spiral front, a plurality of cutting grooves arranged in a spiral are arranged along the spiral front, and the cutting The broken groove is generally located on a spiral front at a cone included at the end of the rod body. The surface of the cone portion forms a plurality of reamer blades extending along the rod body. The hole diameter is enlarged, and the cutting grooves cut the fiber of the object, so that the screw can be drilled into the object more quickly and easily without causing the object to emit smoke due to friction and heat.

Description

Fiber-cutting screws

This creation is about a screw, especially a screw that cuts the fiber (such as wood) of an object during screw-in.

There is a commercially available screw particularly suitable for wood-like objects. The screw has a sharper tip and a sharper spiral portion suitable for screwing wooden objects. However, this traditional screw needs to push the fiber outwards when locked into a wooden object. If a screwdriver is used to drive the screw to rotate quickly, the wooden object may generate heat energy due to friction with the screw, which may further cause the object to be exposed. The problem of smoke and even combustion, and the greater the frictional resistance of the screw drilling object, the slower the screw drilling speed. These problems need to be solved.

In order to solve this problem, the present invention provides a screw capable of cutting fibers. The screw includes a rod body including a tapered portion formed at one end and a head portion formed at the other end. A spiral portion is formed at The surface of the rod body extends to the tapered portion, and the spiral portion includes two spiral-shaped blade surfaces and a spiral front formed at the spiral shape by the connection of the two blade surfaces, wherein the spiral portion further includes a spiral A plurality of cutting grooves extending to the two cutting surfaces, the plurality of cutting grooves are arranged in a spiral shape along the spiral front, and a plurality of reamer blades formed on the surface of the tapered portion, each of the reamer blades extending from the tapered portion Through the partial spiral front, the cross-sectional shape of each reamer blade is V-shaped.

The three reaming blades of the screw in this creation are set in the cone, so that in the initial stage of the screw lock, the hole of the object can be enlarged slightly larger than the outer diameter of the rod body, so the friction between the material of the object and the outer peripheral surface of the rod is reduced. The screw can be fastened on the object quickly, and the problem that the object generates smoke due to high heat is easily overcome during the screwing of the screw. A plurality of cutting grooves are provided on the spiral portion, and each cutting groove can cut the fiber of the object during the screw rotation and screwing process, so that it is not easy to be entangled with the object fiber during the screwing process, which can further speed up the screw. Screwing speed.

The cross-sectional shape of each of the cutting grooves is V-shaped, and the cutting grooves are distributed on the spiral portion located at the tapered portion.

The fiber-cuttable screw further includes a secondary spiral portion formed on the surface of the rod body and spaced from the spiral portion, the secondary spiral portion being interposed between the head and the spiral portion and the outer diameter of the secondary spiral portion Slightly larger than the outer diameter of the helix.

The extending direction of the reamer blade is substantially parallel to the rod body.

The head includes a flange portion including a plurality of converging teeth formed in an inner end surface and arranged in a ring shape, a middle portion of the cone, extending between the flange portion and a tail end of the rod body, and the middle portion The part further includes a plurality of expansion ribs.

Each expansion rib can enlarge the upper end of the hole of the object into a cone shape, so that the head is easily buried under the surface of the object, and each expansion rib can help a part of the debris accumulated in the hole to be discharged out of the hole. When the head is buried under the surface of the object, the plurality of retracting teeth can grasp at least a part of the discharged debris to fill a small gap between the head of the screw and the object, so that the screw 10 and the object are more Tightly combined.

The expansion ribs are arranged in a spiral shape, and the vortex direction of each expansion rib is the same as the spiral direction of the spiral portion. Each of the converging teeth includes a short side and a long side connected to the short side, and converges. The long sides of the teeth are inclined in the same direction as the expansion ribs.

The creation will be understood more clearly with the detailed description of the illustrative embodiment that illustrates the creation in conjunction with the drawings.

The screw of this creation is a screw that can cut the fiber of an object (such as an object made of wood material) when screwing. Referring to FIGS. 1 to 4, the screw 10 includes a rod body 20 having a circular cross section, the rod body 20 is rod-shaped, and the rod body 20 includes a tail end 22 and a tapered portion far from the tail end 22. 24. The tip end of the cone portion 24 forms a tip 26, and the screw 10 further includes a head portion 28 formed on the tail end 22 and larger than the rod body 20. The head portion 28 includes a flange portion 28A and a An intermediate portion 28B extending in a conical shape between the flange portion 28A and the tail end 22 is formed together. The flange portion 28A is larger than the largest portion of the intermediate portion 28B, so that the inner surface of the flange portion 28A and the intermediate portion 28B are larger. There is a gap between them. The outer surface of the flange portion 28A is provided with a non-circular coupling groove (not shown), which can be used to combine with tools such as screwdrivers and pneumatic screwdrivers, and the screws can be driven through the tools. The 10 rotation further locks the rod 20 into an object 42.

The head portion 28 further includes a plurality of expansion ribs 28C formed on the surface of the middle portion 28B. Each expansion rib 28C has a spiral arrangement, and the vortex direction of each expansion rib 28C is the same as the spiral direction of the spiral portion 30. 28 further includes a plurality of constricting teeth 29 arranged in a ring at the gap between the inner surface of the flange portion 28A and the intermediate portion 28B. Each of the converging teeth 29 includes a short side 29A and a short side 29A. One long side 29B (as shown in FIGS. 1, 3 to 6), and the oblique direction of the long side 29B of each of the converging teeth 29 is the same as that of the expansion rib 28C.

The screw 10 further includes a spiral portion 30 formed on the surface of the rod body 20 in a spiral shape. The spiral portion 30 extends from the tip 26 of the cone portion 24 toward the tail end 22 but is spaced from the tail end 22 (as shown in FIG. 1). (Shown), the spiral portion 30 includes two spiral blade surfaces 34 connected at one end and spirally formed, and a spiral front 32 formed by the joint of the two blade surfaces 34, and the spiral portion 30 further includes The spiral front 32 is spirally arranged in a plurality of cutting grooves 36 formed on the spiral portion 30. Each cutting groove 36 extends from the spiral front 32 toward the rod body 20 but is separated from the rod body 20, and each cut The groove 36 extends to two cutting surfaces 34 to form a V-shaped cutting groove 36. In addition, in the preferred state, the plurality of cutting grooves 36 are distributed only on the spiral front 32 located at the cone portion 24. However, the cutting groove 36 can also be arranged to cover the spiral front 32 of the entire spiral portion 30. In addition, referring to FIG. 2, the two cutting surfaces 3 of the spiral portion 30 are preferably selected. The same length, and the two faces 34 form an angle with the rod 20 of the outer peripheral surface is different.

The screw 10 also includes three reamer blades 38 formed on the surface of the tapered portion 24. The reamer blades 38 are formed by the protrusions extending from the tip 26 of the tapered portion 24 through the part of the spiral front 32, and The cross-sectional shape of each reamer blade 38 is V-shaped (as shown in Figs. 3 and 4). In essence, it is better to select each reamer blade 38 to extend substantially parallel to the axial direction of the rod body 20 (such as (Figures 1 and 2).

When the screw 42 is used to lock the object 42 (wooden object), when the cone portion 24 is just locked into the object 42, the reaming blade 38 can slightly expand the hole of the object 42, and the hole of the object 42 is further enlarged by the reaming blade 38. Enlarged to slightly larger than the outer diameter of the rod body 20, this helps the screw 10 to drill into the object 42 more quickly, and the cutting groove 36 can effectively and quickly cut while the screw 10 rotates to drill into the object 42 The fiber of the wooden object 42. In this way, the screw 10 can be quickly drilled into the object 42 and the frictional resistance after the screw 10 is drilled into the object 42 is further reduced, thereby reducing the thermal energy generated during the drilling of the screw 10 and preventing the object 42 from being drilled. The problem that the screw 10 smokes due to thermal energy at 10 o'clock can also speed up the drilling speed of the screw 10 into the object 42.

Referring to FIG. 5, when the screw 10 is locked to the head 28 contacting a surface 44 of the object 42, the expansion ribs 28C can expand into a cone at the upper end of the hole of the object 42 and accumulate in the hole. The debris 46 exits the outside of the hole, further making it easier for the middle part 28B of the head 28 to be embedded in the object 42. Referring to FIG. 6, when the plurality of beam teeth 29 of the flange portion 28A of the screw 10 contact the object 42 At 44 o'clock on the surface, at least a part of the debris 46 that was discharged will be grasped by the retracting teeth 29, and further as the head 28 is buried under the surface 44 of the object 42, the scraps caught by the respective retracting teeth 29 The chip 46 fills the small gap between the head 28 of the screw 10 and the object 42, so that the screw 10 is more firmly screwed onto the object 42.

The screws 10 shown in Figures 1 to 6 of this creation are provided with three reaming blades 38 at the cone portion 24, so that in the initial stage of the screw 10 screw lock, the hole of the object 42 can be enlarged to slightly larger than the outer diameter of the rod 20, In this way, the frictional force between the material of the object 42 and the outer surface of the rod body 20 is reduced, so that the screw 10 can be fastened to the object 42 quickly, and the problem that the object 42 emits smoke during the process of rotating and screwing the screw 10 is overcome.

The screw 10 shown in Figures 1 to 6 of this creation is provided with a plurality of cutting grooves 36 in the screw portion 30. During the screwing of the screw 10, each of the cutting grooves 36 can cut the fiber of the object 42 to make the screw During the 10 screwing process, it is not easy to be entangled with the fibers of the object 42, which can further accelerate the screwing speed of the screw 10.

The screws 10 shown in Figures 1 to 6 of this creation are provided with expansion ribs 28C in the head 28. When the screws 10 are screwed to the head 28 close to the surface of the object 42, the expansion ribs 28C can fix the upper end of the hole in the object 42. Enlarging into a cone shape, the head 28 is easy to be buried under the surface 44 of the object 42, and the expansion ribs 28C can help a part of the debris 46 accumulated in the hole to be discharged out of the hole.

The screws 10 shown in Figures 1 to 6 of this work are provided with a plurality of constricting teeth 29 in the flange portion 28A. When the head 28 is buried under the surface 44 of the article 42, at least a part of the discharged debris 46 can be grasped. It is used to fill the small gap between the head 28 of the screw 10 and the object 42 so that the screw 10 and the object 42 are more tightly combined.

It is worth mentioning that the screw of this creation is characterized by a spirally arranged cutting groove 36 provided on the spiral portion 30 near the tapered portion 24. Therefore, the screw of this creation is not limited to being used only as shown in Figures 1 to 4. In the form of screw 10, essentially the same or similar technical features can also be used on different types of screws. Refer to Figure 7 for another screw 10A. The screw 10A has the same characteristics as shown in Figures 1 to 4. The screw 10 has substantially the same technical features, except that the screw 10A further includes a secondary spiral portion 40 formed on the surface of the rod body 20 and close to the head portion 28. The secondary spiral portion 40 and the spiral portion 30 are separated from each other, and The auxiliary spiral portion 40 is located between the tail end 22 and the spiral portion 30. The external diameter of the auxiliary spiral portion 40 is slightly larger than the external diameter of the spiral portion 30.

The screw portion 30 of the screw 10A and the portion corresponding to the cone portion 24 are still provided with a plurality of cutting grooves 36 arranged in a spiral on the spiral front 32, and three reaming edges 38 are provided on the surface of the cone portion 24. The screw 10A is due to the role of the auxiliary screw portion 40. After the screw 10A is locked into the object 42, the tightening force between the screw 10A and the object 42 is stronger than that of the screw 10 (shown in Figures 1 to 4), and the screw 10A also has It can quickly drill into the object 42 and it is not easy to smoke the object 42 due to friction and high temperature during the drilling process. Therefore, the technical features of the plurality of cutting grooves 36 and the reaming blades 38 provided on the spiral front 32 of the spiral portion 30 can be used in various types of screws. This simple replacement belongs to this Protection of creation.

Since the creation disclosed in the specification can be implemented in other specific forms without departing from the spirit or general characteristics of the creation, and some forms of these specific forms have been pointed out, the embodiments disclosed in the description should be regarded as examples rather than limitations. The scope of this creation is defined by the scope of the attached patent application, not by the above description. All changes that fall within the meaning and scope of the patent application scope will still be included in its scope.

10‧‧‧ screws

10A‧‧‧Screw

20‧‧‧ shaft

22‧‧‧ tail

24‧‧‧ cone

26‧‧‧ tip

28‧‧‧ head

28A‧‧‧Flange

28B‧‧‧ Middle Part

28C‧‧‧Expansion rib

29‧‧‧ Retracting teeth

29A‧‧‧Short side

29B‧‧‧long side

30‧‧‧Screw

32‧‧‧ Spiral Front

34‧‧‧ blade surface

36‧‧‧ cutting groove

38‧‧‧ Reaming Blade

40‧‧‧ Deputy Spiral Department

42‧‧‧ objects

44‧‧‧ surface

46‧‧‧ debris         

Figure 1 is a three-dimensional appearance of the creative screw.

Figure 2 is a partially enlarged view of the creative screw.

Figure 3 is an end view of the creative screw viewed from the tip.

Fig. 4 is a sectional view taken along line 4-4 of Fig. 2;

Fig. 5 is a sectional view before the screw of this creation is completely locked into the object.

Figure 6 is a cross-sectional view of the screw completely locked into the object.

Fig. 7 is a perspective view of another screw of this creation.

All the drawings are only for explaining the basic teaching, and the number, position, relationship, and size of the elements constituting the illustrative embodiment will be explained in the drawings or belong to the industry skills after reading and understanding the following description. In addition, after reading and understanding the following description, it is also an industry skill to change the precise dimensions and size ratios to match specific forces, weights, strengths, and similar requirements.

The same reference numerals are used to indicate the same or similar elements in different drawings; please also understand the text such as "top", "bottom", "first", "second", "forward", "backward", "reverse" To "," front "," back "," height "," width "," length "," end "," side ", The terms "horizontal", "vertical", and the like are only for the convenience of the viewer to refer to the structure in the figure and are only used to help describe the illustrative embodiment.

Claims (9)

A screw capable of cutting fibers includes a rod body. The rod body includes a tapered portion formed at one end and a head portion formed at the other end. A spiral portion is formed on the surface of the rod body and extends to the tapered portion. The helical portion includes two helical blade surfaces and a helical front formed by connecting the two blade surfaces at a spiral shape. The helical portion further includes a plurality of cuts extending from the helical front to the two blade surfaces. Broken grooves, a plurality of cutting grooves are arranged in a spiral shape along the spiral front, and a plurality of reamer blades are formed on the surface of the tapered portion, and each of the reamer blades extends from the tapered portion through a part of the spiral front, The cross-sectional shape is V-shaped. According to the screw capable of cutting fibers according to item 1 of the scope of patent application, the cross-sectional shape of each cutting groove is V-shaped, and the cutting grooves are distributed on the spiral portion located at the cone portion. The fiber-cuttable screw according to item 1 of the scope of patent application, further comprising a secondary spiral portion formed on the surface of the rod body and separated from the spiral portion, the secondary spiral portion being interposed between the head and the spiral portion and The external diameter of the auxiliary spiral portion is slightly larger than the external diameter of the spiral portion. According to the screw capable of cutting fibers according to item 1 of the scope of patent application, the extending direction of the reamer blade is substantially parallel to the rod body. As described in Item 1 of the scope of patent application, a fiber-cuttable screw, the head includes:
A flange portion including a plurality of converging teeth formed on an inner end surface and arranged in a ring shape;
A tapered middle portion extends between the flange portion and a tail end of the rod body, and the middle portion further includes a plurality of expansion ribs. As described in claim 5 of the scope of patent application, the fiber-cuttable screw, the expansion ribs are arranged in a spiral shape, and the vortex direction of each expansion rib is the same as the spiral direction of the spiral portion, and each of the converging teeth includes One short side and one long side connected to the short side, and the long sides of the converging teeth are inclined in the same direction as the expansion ribs. A fiber-cuttable screw includes a rod body, the rod body including a tapered portion formed at one end and a head portion formed at the other end, and a spiral portion formed on a surface of the rod body and extending to the tapered portion. It is characterized in that a plurality of reamer blades are formed on the surface of the cone portion, each reamer blade extends from the cone portion through a part of the spiral front, the cross-sectional shape of each reamer blade is V-shaped, and the head includes a convex An edge portion and a middle portion extending between a flange portion and a tail end of the rod body, the flange portion including a plurality of constricting teeth formed on an inner end surface and arranged in a ring shape, the middle portion further including a plurality of teeth Expansion ribs. As described in claim 7 of the scope of patent application, the fiber-cuttable screw, the expansion ribs C are arranged in a spiral shape, and the vortex direction of each expansion rib is the same as the spiral direction of the spiral portion, and each of the converging teeth is It includes a short side and a long side connected to the short side, and the long side of the converging teeth is inclined in the same direction as the expansion rib. As described in claim 7 of the scope of the patent application, the fiber-cuttable screw has an extending direction substantially parallel to the shaft.