TWM604844U - Low-wear screw structure - Google Patents

Abstract

The present invention provides a low-wear screw structure, which includes a screw head, a rod body, a first thread, and at least one crushing rib, wherein the screw head is provided with a top and a neck that tapers away from the top; the rod The body extends from the neck, and is successively formed with a shaft portion, a reaming portion and a pointed taper portion; the first threaded ring is provided on the rod body from the pointed taper portion through the reaming portion to the The shaft part is on the outer peripheral surface at a distance; the crushing ribs are provided on the outer peripheral surface of the shaft at the reaming portion, wherein the first side surface and the outer peripheral surface of the shaft are on the crushing rib and the shaft The cross section forms a first included angle, the second side surface and the outer peripheral surface of the rod body form a second included angle at the cross section of the crushing rib and the rod body, and the first included angle is different from the second included angle.

Description

Low-wear screw structure

This creation is about a kind of screw, especially a low-wear screw structure with reaming and reducing thread wear.

When wood screws are locked into wood, the wood with higher hardness has higher resistance due to its higher density, and the friction between the thread of the wood screw and the wood block gradually increases during the screwing process. Therefore, more and more The greater the force can be locked in, not only is easy to cause the screw teeth to wear and lock in the wood, but also need more and more force to lock in the wood, and the wood crack is prone to occur.

In view of this, there is a need to propose a solution to solve the above-mentioned problems.

The purpose of this creation is to solve the problem that the conventional wood screws are used in the prior art to tap and lock wood due to the wear of the screw teeth.

In order to achieve the above objective, the present invention provides a low-wear screw structure, which mainly includes a screw head, a rod body, a first thread and at least one crushing rib, wherein the screw head includes a top and a screw extending from the top and facing toward A neck that tapers away from the top; the shaft extends from the neck of the screw head, and the shaft includes a shaft connected to the neck and a reaming part connected to the shaft And a tapered portion connected to the other side of the reaming portion, wherein the shaft portion has a first bottom diameter, and the reaming portion has a second bottom diameter; the first threaded ring is provided on the rod The body moves from the pointed cone portion to the outer peripheral surface of the shaft portion at a distance through the reaming portion; the crushing ribs are provided on the outer peripheral surface of the shaft at the reaming portion, and each crushing rib has a A first side surface and a second side surface; wherein the first thread at the reaming portion is provided with a plurality of serrated cutting edges on the outer periphery, and the first side surface and the outer periphery surface of the rod body of each of the crushing ribs A first included angle is formed between the cross section of the crushing rib and the rod body, and the second side surface of each of the crushing ribs and the outer peripheral surface of the rod body form a second angle between the cross section of the crushing rib and the rod body The included angle, the first included angle is different from the second included angle.

Further, the diameter width of the first bottom diameter of the shaft portion is different from the diameter width of the second bottom diameter of the reaming portion, and the diameter width of the second bottom diameter is greater than zero and smaller than that of the first bottom diameter The diameter is wide.

Further, the first thread has a first height on the shaft portion, and the first thread has a second height on the reaming portion, the first height is different from the second height, and the first height is greater than Zero and less than the second height.

Further, the first thread has a first thread outer diameter width, and the first thread outer diameter width is the same as that of the shaft part and the reaming part.

Further, each of the pulverizing ribs is spirally arranged on the outer peripheral surface of the reaming portion of the rod body along a direction parallel to the axis of the rod body, and the angle value of the first included angle is greater than the angle value of the second included angle.

Further, the first side surface of each of the crushing ribs and the first thread form a third included angle on the outer peripheral surface of the reaming portion of the rod body, and the third included angle is less than 90 degrees and greater than zero degrees.

Further, each of the crushing ribs is provided with a ridge, the ridge is formed at the junction of the first side surface and the second side surface, and the cross section of the ridge is arc-shaped.

Further, the difference between the first included angle and the second included angle is greater than or equal to 5 degrees and less than or equal to 45 degrees.

Further, the first thread has a first thread angle on the reaming portion, and the first thread has a second thread angle on the taper portion. The angle of the first thread angle is equal to the angle of the second thread angle. The angle is different.

Further, each of the crushing ribs is provided with a ridge, and the ridge is provided with a plurality of ridge peaks and a plurality of ridge valleys arranged alternately, so that the ridge is wavy.

Therefore, this creation has the following beneficial effects compared with previous technologies:

1. The low-wear screw structure of this creation mainly makes the first included angle and the second included angle of the crushing rib different, and the angle value of the first included angle is greater than the angle value of the second included angle, so that the thread of the crushing rib is locked into the wood The sawdust in the middle can be quickly broken, reducing the screwing torque when the first thread is locked and reducing the wear caused by the first screw mosquito when it is locked.

2. The first thread of this creation uses the diameter width of the first bottom diameter of the shaft part, which is different from the diameter width of the second bottom diameter of the reaming part, so that the first thread has the first thread outer diameter width The shaft part and the reaming part are the same, so that the operator can lock into the wood effortlessly.

Here are a few preferred implementation aspects of the technical features and operation methods of this application, which will be described in conjunction with the illustrations for review and reference. Furthermore, the drawings in this creation are not necessarily drawn according to the actual scale for the convenience of explanation, and the ratios in the drawings are not used to limit the scope of protection requested by this creation.

Regarding the technique of this creation, please refer to Figures 1 to 3. This creation provides a first embodiment of a low-wear screw structure, which mainly includes a screw head 10, a rod body 20, and a first thread 30 And at least one crushing rib 40. The low-wear screw structure of this creation is mainly used for fixing or joining wooden workpieces, such as wooden floors, wooden furniture, etc., but not limited to this.

The screw head 10, please refer to Figures 1 to 3-2 first, includes a top portion 11 and a neck portion 12 extending from the top portion 11 and tapering away from the top portion 11. The neck portion 12 A plurality of protruding ribs 13 are also provided, and the protruding ribs 13 strengthen the embeddedness of the wooden workpiece after being locked into the wooden workpiece.

The shaft 20 extends from the neck 12 of the screw head 10. The shaft 20 includes a shaft portion 21 connected to the neck portion 12, a reaming portion 22 connected to the shaft portion 21, and A tapered portion 23 connected to the other side of the reaming portion 22, please refer to Figure 3-1 again, wherein the shaft portion 21 has a first bottom diameter W1, and the reaming portion 22 has a The second bottom diameter W2, wherein the first bottom diameter W1 of the shaft portion 21 has a different diameter from the second bottom diameter W2 of the reaming portion 22, and the second bottom diameter W2 has a larger diameter Width at zero and smaller than the first bottom diameter W1;

The first thread 30, the first thread 30 is ringed on the outer peripheral surface of the rod body 20 from the tapered portion 23 to the shaft portion 21 through the reaming portion 22, wherein the first thread 30 has a first height H1 on the shaft portion 21, and the first thread 30 has a second height H2 on the reaming portion 22, the first height H1 is different from the second height H2, the first height H1 is greater than zero and less than the second height H2, and the first thread 30 has a first thread outer diameter width W3, and the shaft portion 21 and the reaming portion 22 have the same first thread outer diameter width W3 , That is, the first thread outer diameter width W3 at the shaft portion 21 and the first thread outer diameter width W3 at the reaming portion 22 are the same. In addition, the rod body of the first embodiment 20 is mainly provided with one first thread 30. The rod body 20 can also be provided with more than two first threads 30, but not limited to this. In addition, the first thread 30 is connected to the reaming portion 22 and the The reaming portion has a first thread angle β1, and the first thread 30 has a second thread angle β2 at the taper portion 23, and the angle of the first thread angle β1 is different from the angle of the second thread angle β2, Wherein, the first thread angle β1 is about 30 degrees to 50 degrees, the first thread angle β1 of the first embodiment is 40 degrees, and the second thread angle β2 is about 40 degrees to 60 degrees. In the first embodiment, the second thread angle β2 is 50 degrees, and the first thread 30 has an asymmetric structure.

The crushing ribs 40 are provided on the outer peripheral surface of the rod body 20 at the reaming portion 22. Please refer to Figures 2-2 to 2-4. The first embodiment has four crushing ribs. Ribs 40, each of the crushing ribs 40 has a first side 41, a second side 42 and a ridge 43 formed at the junction of the first side 41 and the second side 42, wherein each of the crushing ribs The rib 40 is spirally arranged on the outer peripheral surface of the reaming portion 22 of the rod body 20 along the axial direction C of the rod body 20, and the cross section of the ridge portion 43 is arc-shaped, but not limited to this .

Wherein, the first thread 30 at the reaming portion 32 is provided with a plurality of serrated cutting edges 31 on the outer periphery. The serrated cutting edges 31 make the reaming portion 22 easy to form a reaming effect on the wooden workpiece when the reaming portion 22 is locked in. ；

Wherein, please refer to FIGS. 2-3 and 2-4 again, the first side surface 41 of each of the crushing ribs 40 and the outer peripheral surface of the rod body 20 are on the crushing rib 40 and the rod body 20 The cross section forms a first included angle α1, and the second side 42 of each crushing rib 40 and the outer peripheral surface of the rod body 20 form a second included angle α2 between the cross section of the crushing rib 40 and the rod body 20 , The first included angle α1 and the second included angle α2 are different, and the difference between the first included angle α1 and the second included angle α2 is greater than or equal to 5 degrees and less than or equal to 45 degrees, in the first embodiment The difference between the first included angle α1 and the second included angle α2 is approximately 15 degrees, and the angle value of the first included angle α1 is greater than the angle value of the second included angle α2, and the angle value of the first included angle α1 is 30 degrees Between ~80 degrees, the angle value of the second included angle α2 is between 5 degrees and 30 degrees, so that the generated wood chips are not easy to accumulate at the reaming portion 22, and can be quickly discharged and lower the first thread 30 Please refer to Figure 2-2 again for the wear and tear, and the ends of each crushing rib 40 will gradually shrink to the rod body 20.

Please refer to Figures 4-1 to 4-2. This is the second embodiment of the creation. The main features and functions are the same as those of the first embodiment and will not be repeated here. The main difference is the second embodiment. Five crushing ribs 40 are formed on the reaming portion 22, and the first side surface 41 and the first thread 30 of each crushing rib 40 are formed on the outer peripheral surface of the reaming portion 22 of the rod body 20 A third included angle α3 is less than 90 degrees and greater than zero degrees. In addition, the user can form 2 crushing ribs 40, 3 crushing ribs 40, 4 crushing ribs 40, 5 crushing ribs 40, 6 crushing ribs 40, and 7 crushing ribs on the outer peripheral surface of the reamer 22 according to requirements. The rib 40 and the eight crushing ribs 40 are not limited to this; in addition, the user can also provide an oblique thread on the outer peripheral surface of the shaft portion 21 between the first thread 30 and the neck 12 according to their needs ( The figure is not labeled), but it does not affect the structure and the effect of the crushing ribs 40 in this creation.

Please refer to Figures 5-1 to 6, which is the third embodiment of this creation. The main features and functions of the third embodiment are the same as those of the first embodiment. The main difference is that the third embodiment is located here. Each of the crushing ribs 40 of the reaming portion 21 is spirally arranged counterclockwise along the axial direction C of the rod body 20, that is, the crushing ribs 40 and the first spiral mosquito 30 are arranged along the axis of the rod body 20. The rotation setting direction of the axial direction C is different. Therefore, the first side surface 41 and the first thread 30 of each of the crushing ribs 40 are formed on the outer peripheral surface of the reaming portion 22 of the rod body 20. The three included angle α3 is greater than 90 degrees and less than 180 degrees.

Please refer to Fig. 7, which is the fourth embodiment of this creation. Its main features, structure and function are the same as those of the first embodiment and will not be repeated here. The main difference is that each of the crushing ribs 40 of the fourth embodiment The ridge 43 is provided with a plurality of ridge peaks 431 and a plurality of ridge valleys 432 alternately arranged, and the ends of each of the crushing ribs 40 will gradually shrink to the rod body 20, whereby each of the crushing ribs The ridge 43 of 40 is wavy to facilitate the crushing of the wood chips and the removal of chips.

Please refer to Figure 8, which is the fifth embodiment of this creation. Its main features, structure and function are the same as those of the first embodiment, and will not be repeated here. The main difference is that each of the crushing ribs 40 of the fourth embodiment The ridge portion 43 is provided with the ridge peaks 431 and the ridge valleys 432 staggered. The height difference between the ridge peak 431 and the ridge valley 432 of the fifth embodiment is greater than that of the fourth embodiment. The height difference between the ridge portion 431 and the ridge valley 432 is large, whereby the ridge portion 43 of each of the crushing ribs 40 is wavy, which facilitates the crushing of the wood chips and the removal of chips.

Please refer to Figure 9, which is the sixth embodiment of this creation. Its main features, structure and function are the same as those of the first embodiment and will not be repeated here. The main difference is that each of the crushing ribs 40 of the sixth embodiment The ridge 43 is provided with a plurality of ridge peaks 431 and a plurality of ridge valleys 432 alternately arranged, and the ends of each of the crushing ribs 40 will gradually shrink to the rod body 20, whereby each of the crushing ribs The ridge 43 of 40 is wavy to facilitate the crushing of the wood chips and the removal of chips. At the same time, the crushing ribs 40 extend to the pointed cone portion 23, so that the generated wood chips are discharged from the pointed cone portion 23. .

Please refer to Figure 10, which is the seventh embodiment of this creation. The main features and functions of the seventh embodiment are the same as those of the first embodiment. The details are omitted. The main difference is that each of the crushing ribs 40 of the seventh embodiment The ridge 43 is provided with a plurality of ridge peaks 431 and a plurality of ridge valleys 432 alternately arranged, whereby the ridge 43 of each of the crushing ribs 40 is wavy to facilitate the crushing of the wood chips generated During chip evacuation, a rapid chip evacuation groove 50 is formed at the reaming portion 22 at the same time, and the rapid chip evacuation groove 50 enables the wood chips generated during the crushing process to be quickly discharged through the rapid chip evacuation groove 50.

In summary, the first included angle α1 and the second included angle α2 of each of the crushing ribs 40 of the low-wear screw structure of the present creation are different, and the first included angle α1 is greater than the second included angle α2, so that the lock When the wooden workpiece is inserted, the wood chips located between the first threads 30 can be easily broken and pulverized, which reduces the screwing torque of the first threads 30 when they are locked, thereby reducing the wear of the first threads 30; At the same time, the first thread 30 uses a design that the diameter width of the first bottom diameter W1 of the shaft portion 21 is different from the diameter width of the second bottom diameter W2 of the reamer portion 22, thereby allowing The first thread outer diameter width W3 of the first thread 30 is the same as that of the shaft portion 21 and the reaming portion 22, so that the operator can lock into the wooden work piece effortlessly.

The content of this creation has been described in detail above, but the above are only the preferred embodiments of this creation, and should not be used to limit the scope of implementation of this creation, that is, all equal changes and changes made in accordance with the scope of patent application for this creation Modifications should still fall within the scope of the patent for this creation.

10: Screw head 11: top 12: neck 13: convex rib 20: Rod body 21: Shaft 22: Reaming part 23: Taper 30: first thread 31: Serrated cutting edge 40: crush ribs 41: First side 42: second side 43: spine 431: ridge peak 432: ridge valley 50: Fast chip flute W1: first base diameter W2: Second bottom diameter W3: outer diameter width of the first thread H1: first height H2: second height H3: second reaming height C: axis direction α1: The first included angle α2: The second included angle α3: third angle β1: first thread angle β2: second thread angle

Figure 1: This is a three-dimensional schematic diagram of the first embodiment of the creation of a low-wear screw structure. Figure 2-1: This is a side view of the first embodiment of the creation of a low-wear screw structure. Figure 2-2: is a partial enlarged view of the circled area in Figure 2-1. Figure 2-3: is a schematic cross-sectional view of the line A-A in Figure 2-1. Figure 2-4: is a partial enlarged view of the circled area in Figure 2-3. Figure 3-1: is a schematic cross-sectional view of the circled location in Figure 2-1. Figure 3-2: is a partial enlarged view of the circled area in Figure 3-1. Figure 4-1: This is a side view of the second embodiment of the creation of a low-wear screw structure. Figure 4-2: It is a schematic cross-sectional view of the line B-B in Figure 4-1. Figure 5-1: This is a schematic side view of the third embodiment of the low-wear screw structure. Figure 5-2: is a schematic cross-sectional view of the line C-C in Figure 5-1. Figure 5-3: An enlarged schematic diagram of the circled area in Figure 5-2. Figure 6: is a partial three-dimensional enlarged schematic view of the screw head in Figure 5-1. Figure 7: This is a partial side view of the rod of the fourth embodiment of the low-wear screw structure. Figure 8: This is a partial side view of the rod of the fifth embodiment of the low-wear screw structure. Figure 9: This is a partial side view of the rod of the sixth embodiment of the creation of a low-wear screw structure. Figure 10: This is a three-dimensional schematic diagram of the seventh embodiment of the creation of a low-wear screw structure.

10: Screw head

11: top

12: neck

13: convex rib

20: Rod body

21: Shaft

22: Reaming part

23: Taper

30: first thread

31: Serrated cutting edge

40: crush ribs

Claims (10)

A low-wear screw structure, which mainly includes: A screw head, including a top and a neck extending from the top and tapering away from the top; A rod body extending from the neck portion of the screw head, the rod body including a shaft portion connected to the neck portion, a reaming portion connected to the shaft portion, and a reaming portion connected to the reaming portion The side taper portion, wherein the shaft portion has a first bottom diameter, and the reamer portion has a second bottom diameter; A first thread, the first thread is ringed on the outer peripheral surface of the shaft from the tapered portion to the shaft portion through the reaming portion; and At least one crushing rib is provided on the outer peripheral surface of the rod body at the reaming portion, each of the crushing ribs has a first side surface and a second side surface; Wherein, the first thread at the reaming part is provided with a plurality of serrated cutting edges on the outer periphery; Wherein, the first side surface of each of the crushing ribs and the outer peripheral surface of the rod body form a first included angle between the cross section of the crushing rib and the rod body, and the second side surface of each of the crushing ribs and the rod The outer peripheral surface of the rod body forms a second included angle between the crushing rib and the cross section of the rod body, and the first included angle is different from the second included angle. The low-wear screw structure according to claim 1, wherein the diameter width of the first bottom diameter of the shaft portion is different from the diameter width of the second bottom diameter of the reaming portion, and the diameter of the second bottom diameter The width is greater than zero and smaller than the diameter width of the first base diameter. According to the low-wear screw structure of claim 2, further, the first thread has a first height on the shaft portion, and the first thread has a second height on the reaming portion, and the first height Unlike the second height, the first height is greater than zero and less than the second height. According to the low-wear screw structure of claim 2, further, the first thread has a first thread outer diameter width, and the first thread outer diameter width is the same as the shaft portion and the reaming portion. The low-wear screw structure according to claim 1, wherein each of the crushing ribs is spirally arranged on the outer peripheral surface of the reaming portion of the rod in a direction parallel to the axis of the rod, and the first included angle The angle value is greater than the angle value of the second included angle. The low-wear screw structure according to claim 1, wherein the first side surface of each of the crushing ribs and the first thread form a third included angle on the outer peripheral surface of the reaming portion of the rod body, the The third included angle is less than 90 degrees and greater than zero degrees. According to the low-wear screw structure of claim 1, further, each of the crushing ribs is provided with a ridge formed at the junction of the first side surface and the second side surface, and the cross section of the ridge The line is arc-shaped. The low-wear screw structure according to claim 1, wherein the difference between the first included angle and the second included angle is greater than or equal to 5 degrees and less than or equal to 45 degrees. The low-wear screw structure of claim 1, wherein the first thread has a first thread angle at the reaming portion, and the first thread has a second thread angle at the taper portion, and the first thread The angle of the thread angle is different from the angle of the second thread angle. According to the low-wear screw structure of claim 1, further, each of the crushing ribs is provided with a ridge, and the ridge is provided with a plurality of ridge peaks and a plurality of ridge valleys arranged alternately, so that the ridge is wavy .

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