TW202111226A - Wood screw structure having a chip discharge port for crushing and quickly discharging chips to uniformly release pressure - Google Patents

Abstract

The present invention provides a wood screw structure, which includes a screw head section, a rod body section, a first thread, and a plurality of crushing rib units. The rod body section is integrally formed by the screw head section in sequence so as to include a first shaft portion, a second shaft portion and a third shaft portion connected with a neck portion, and a tapered cone portion extending and tapering outwardly from the third shaft portion. The first thread is spirally projected on an outer peripheral surface of the tapered cone portion, the second shaft portion and the third shaft portion. The crushing rib units are spirally and circularly projected on the outer peripheral surface of the third shaft portion and the tapered cone portion, and include a plurality of crushed blocks projected on a rib body. A first chip discharge port is formed among the crushed blocks. As a result, the first chip discharge port may crush and quickly discharge chips, thereby uniformly releasing the pressure between the object and the wood screw.

Description

Wood screw structure

The present invention relates to a screw for locking wood, in particular to a wood screw structure that is easy to remove chips and can reduce the screwing torque of the locking and prevent the locked wooden material from cracking.

When the wood screws are locked into wood, the wood with higher hardness has higher density and stronger resistance, which makes the wood screw more laborious when screwing in, and the wood chips generated during the screwing process cannot be effectively discharged, so The sawdust remains in the wood and the sawdust is compressed by the screw in of the wood screw, and it is easy to cause the crack of the wood.

However, if a conventional wood screw forms a plurality of irregular protrusion patterns between its threads, this pattern will cause uneven bite force between the pattern part and the object during the tapping process, which may cause the wood screw to tap After entering, problems such as unstable joint and shaking occurred, and the pattern can be composed of a plurality of rib structures, and these rib structures are not equipped with a chip removal structure, so that the wood chips generated during the attack and lock process are easy to accumulate in the pattern part. Between the object and the object, the pressure between the wood screw and the object may increase, and the object may break. In addition, in the wood screw manufacturing process, because the threads of each section are arranged at intervals, the manufacturing process has to be completed multiple times. Problems such as high cost and time-consuming. In view of this, the inventor of the present invention has concentrated on research and combined what he has learned to solve the above problems and propose a wood screw structure that is easy to remove chips to overcome the lack of conventional knowledge.

The purpose of the present invention is to solve the problem that the conventional wood screw in the prior art cannot provide effective chip removal and disperse the pressure between the object and the screw when tapping the wood.

In order to achieve the above objective, the present invention provides a wood screw structure which includes a screw head section, a rod body section, a first thread and a plurality of crushing rib units, wherein the screw head section includes a top portion, and a top portion extending from the top portion. And a neck that tapers away from the top; the shaft section is integrally formed from the neck of the screw head section, and the shaft section includes a first shaft connected to the neck, and a second shaft The shaft portion, a third shaft portion, and a tapered portion extending outwardly from the third shaft portion, and the second shaft portion is provided on the first shaft portion and the third shaft The third shaft portion is provided between the second shaft portion and the tapered portion; the first thread is spirally protruded on the tapered portion, the second shaft portion and the third shaft On an outer peripheral surface of the body; the pulverizing rib units, spiral rings protruding from the outer peripheral surface of the third shaft portion and the tapered portion, and each of the pulverizing rib units intersects with the first thread to form an included angle, The crushing rib unit includes a rib body and a plurality of crushing blocks protruding on the rib body; wherein, a first chip discharge port is formed between the crushing blocks; and the outer diameter of the crushing block is smaller than the first The diameter of a thread is larger than the diameter of the third shaft part.

Further, the first thread provided at the third shaft portion has a plurality of second chip discharge ports.

Further, each rib body forms a first side edge and a second side edge at the junction of the third shaft portion and the outer peripheral surface of the taper portion, and the first thread is on the second shaft The junction of the outer peripheral surface of the body portion, the third shaft portion and the tapered portion will form a third side and a fourth side; wherein, the first side and the third side are in the third side The outer peripheral surfaces of the shaft part intersect to form a first included angle, and the angle range of the first included angle is between 40 and 70 degrees.

Further, the first side edge and the fourth side edge intersect at the outer peripheral surface of the third shaft portion to form a second included angle, and the angle range of the second included angle is between 110 and 130 degrees.

Further, the adjacent first side edge and the third side edge intersect at the outer peripheral surface of the tapered portion to form a third included angle, and the angle range of the third included angle is between 50 and 70 degrees.

Further, the adjacent first side edge and the fourth side edge intersect at the outer peripheral surface of the tapered portion to form a fourth included angle, and the angle range of the fourth included angle is between 110 and 130 degrees.

Further, the first included angle and the angle are different from the third included angle.

Further, the adjacent second side and the third side intersect at the outer peripheral surface of the third shaft portion to form a fifth included angle, the fifth included angle ranges from 100 to 130 degrees, and the first The range of the sum of an included angle and the fifth included angle is between 150 and 200 degrees.

Further, the first shaft portion is adjacent to the second shaft portion and a second thread is formed on the side corresponding to the top.

Further, the difference between the outer diameter of the crushed block and the thread diameter of the first thread is 0.6 mm to 0.7 mm.

Therefore, the present invention has the following beneficial effects compared with the prior art:

1. The present invention is provided with a crushing rib unit on the outer peripheral surface of the third shaft portion of the shaft section, and the crushing block of the crushing rib unit forms a first chip discharge port, whereby the crushing block can be used to tap the wood screw When the sawdust generated at the time is discharged between the two first threads, the crushing block can be used to further crush the sawdust, so that the sawdust can be discharged smoothly during the subsequent chip removal, and the pressure of the wood screw and the object can be evenly dispersed. Achieve smooth chip evacuation when tapping and locking.

Here are a few preferred implementation aspects of the technical features and operation methods of this application, and they will be described in conjunction with the illustration below for review and reference. Furthermore, the figures in the present invention are not necessarily drawn according to the actual scale for the convenience of explanation, and the proportions in the figures are not used to limit the scope of the present invention.

Regarding the content of the present invention, please refer to Figures 1-1 to 2-3, which show the first embodiment of the present invention. The present invention provides a wood screw structure, which mainly includes a screw head section 10 and a rod body. Section 20, a first thread 30 and a plurality of crushing rib units 40. The wood screw structure of the present invention is used for fixing or joining wooden workpieces, such as wooden floors, wooden furniture, etc., but is not limited to this.

In more detail, please refer to Figure 2-1 again. The screw head section 10 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 is provided with a plurality of protruding ribs 13, and the protruding ribs 13 can strengthen the embeddedness of the object after the wood screw with the wood screw structure is locked into the object.

Please refer to Figures 2-1 and 2-2 together. The rod body section 20 is integrally formed from the neck 12 of the screw head section 10, and the rod body section 20 includes a connection with the The first shaft portion 21 of the neck 12, a second shaft portion 22, a third shaft portion 23, and a tapered portion 24 that tapers and extend outward from the third shaft portion 23, wherein the The second shaft portion 22 is provided between the first shaft portion 21 and the third shaft portion 23, and the third shaft portion 23 is provided between the second shaft portion 22 and the taper portion 24, The first shaft portion 21, the second shaft portion 22, the third shaft portion 23, and the taper portion 24 of this embodiment are integrally formed in sequence;

The first thread 30 is spirally protruded on an outer peripheral surface 25 of the pointed cone portion 24, the second shaft portion 22 and the third shaft portion 23;

For the crushing rib units 40, a spiral ring protrudes from the outer peripheral surface 25 of the third shaft portion 23 and the tapered portion 24, and each of the crushing rib units 40 intersects with the first thread 30 to form an included angle, wherein In this embodiment, three crushing rib units 40 are formed on the third shaft portion 23 and the tapered portion 24, but it is not limited to this. Please refer to Figures 2-3 again. The crushing rib unit 40 also includes a rib body 41 and a plurality of crushing blocks 42 protruding on the rib body 41; wherein the crushing block 42 has an appearance shape of a pyramid, such as a triangular pyramid or a quadrangular pyramid. It is not limited to this, and the crushed block 42 of this embodiment is a quadrangular pyramid, and a first chip discharge port 43 is formed between the crushed blocks 42. Through the first chip discharge port 43, the wood chips are When chip removal is performed on the outer peripheral surface 25 between the first threads 30, the crushing block 42 and the first chip removal port 43 can be used for cutting when passing through the crushing rib units 40, thereby facilitating the cutting of wood fibers. , And the sawdust that has been cut can be continuously discharged along the space of the outer peripheral surface 25 between the first threads 30;

Wherein, the outer diameter D1 of the crushed block 42 is smaller than the thread diameter D2 of the first thread 30, and greater than the diameter D3 of the third shaft portion 23, and the outer diameter D1 of the crushed block 42 and the first thread The difference of the screw diameter D2 of 30 is between 0.6mm ~ 0.7mm, so that the wood chips will not be blocked by the crushing rib units 40 when they are locked in.

In addition, each rib body 41 forms a first side 44 and a second side 45 at the junction of the third shaft portion 23 and the outer peripheral surface 25 of the taper portion 24, and the first thread 30. A third side 31 and a fourth side 32 are formed at the junction of the second shaft portion 22, the third shaft portion 23, and the outer peripheral surface 25 of the taper portion 24; The one side 44 and the third side 31 intersect at the outer peripheral surface 25 of the third shaft portion 23 to form a first included angle ∠1, and the angle range of the first included angle ∠1 is between 40 and 70 degrees; The first side 44 and the fourth side 32 intersect at the outer peripheral surface 25 of the third shaft portion 23 to form a second included angle ∠2, and the angle range of the second included angle ∠2 is between 110 and 130 degrees; The adjacent first side 44 and the third side 31 intersect at the outer peripheral surface 25 of the tapered portion 24 to form a third included angle ∠3, and the angle range of the third included angle ∠3 is between 50 and 70 degrees ; Adjacent the first side 44 and the fourth side 32 intersect the outer peripheral surface 25 of the tapered portion 24 to form a fourth included angle ∠4, the fourth included angle ∠4 angle range of 110 ~ 130 degrees In addition, the angles of the first included angle ∠1 and the third included angle ∠3 are different, and the second side 45 and the third side 31 intersect at the outer peripheral surface 25 of the third shaft portion 23 to form A fifth included angle ∠5, the fifth included angle ∠5 ranges from 100 to 130 degrees, and the sum of the first included angle ∠1 and the fifth included angle ∠5 ranges from 150 to 200 degrees. The first included angles ∠1 of the adjacent first threads 30 will be different. Therefore, when the first included angles ∠1 of the adjacent first threads 30 are different, the wood fibers can be cut at different angles. And increase the efficiency of cutting wood chips, and further increase the cutting efficiency.

In addition, the first thread 30 is recessed at the third shaft portion 23 to form a plurality of second chip discharge ports 33, whereby the first thread 30 utilizes the third shaft portion 23 formed The second chip discharge port 33 is used for reaming, that is, after the taper portion 24 is locked into the workpiece for positioning, the first thread 30 with the second chip discharge ports 33 on the third shaft portion 23 can be used The screw diameter D2 is larger than the rod diameter D3, so that in the subsequent tapping process, the first thread 30 with the second chip discharge ports 33 on the third shaft portion 23 will reduce the contact with the object and use The second chip openings 33 are reamed and chipped to reduce friction, so that the user can tap and lock the wood screw on the object with less effort; and the first shaft portion 21 is adjacent to the second shaft portion 22. A second thread 50 may be formed on the side of the top portion 11, wherein the second thread 50 in this embodiment has a diagonal appearance shape;

Please refer to Figure 3-1 to Figure 4-3 again, which is the second embodiment of the present invention, and its main structure is roughly the same as that of the first embodiment of the present invention, so the same parts will not be repeated, only the differences In the second embodiment of the present invention, the crushing block 42 of the crushing rib unit 40 is a rhombus-shaped quadrangular pyramid, so that the wood chips generated when tapping the screw holes pass through the first When the chip discharge port 43 is crushed and cut by the crushed blocks 42, the first chip discharge port 43 between the two crushed blocks 42 is accelerated to discharge, so as to avoid mutual interference due to the residual materials in the wooden objects and wood screws. Extrusion, which in turn leads to increased friction and even causes the wooden object to crack. In addition, the outer peripheries of the first thread 30 and the second thread 50 are provided with cutting edges, which can effectively reduce the friction during rotation. , Improve locking efficiency.

In summary, in the wood screw structure of the present invention, the outer diameter D1 of the crushing block 42 of the crushing rib unit is smaller than the thread diameter D2 of the first thread 30 and the difference is between 0.6mm and 0.7mm, thereby locking in It is convenient that the chip removal of the wood chips will not be blocked by the crushing rib units 40, so that the chips can be further crushed and quickly discharged when the object is screwed into the lock, so that the wood chips can be discharged from the object and released uniformly. The pressure between the objects, in addition, the first thread, the second thread and the cutting edge of the outer periphery can be positioned on the object and provide stability during tapping and locking, thereby improving the accuracy of alignment.

10: Screw head section 11: top 12: neck 13: convex rib 20: Rod body section 21: First shaft 22: Second shaft 23: Third shaft 24: Taper 25: Outer peripheral surface 30: the first thread 31: third side 32: Fourth side 33: The second chip discharge port 40: Crushing rib unit 41: Rib body 42: Crush the block 43: First chip discharge port 44: first side 45: second side 50: second thread ∠1: The first angle ∠2: The second included angle ∠3: The third angle ∠4: The fourth angle D1: Outer diameter D2: Screw diameter D3: Rod diameter

Figure 1-1: is a perspective view of the wood screw structure of the first embodiment of the present invention. Figure 1-2: A partial three-dimensional enlarged view of icon A in Figure 1-1. Figure 2-1: is a front view of the wood screw structure of the first embodiment of the present invention. Figure 2-2: It is a partial enlarged view of icon B in Figure 2-1. Figure 2-3: It is a cross-sectional view of the line C-C in Figure 2-2. Figure 3-1: is a perspective view of the wood screw structure of the second embodiment of the present invention. Figure 3-2: It is a partial enlarged view of icon D in Figure 3-1. Figure 4-1: is a front view of the wood screw structure of the second embodiment of the present invention. Figure 4-2: It is a partial enlarged view of icon E in Figure 4-1. Figure 4-3: It is a cross-sectional view of the section line F-F in Figure 4-2.

10: Screw head section

11: top

20: Rod body section

21: First shaft

22: Second shaft

23: Third shaft

24: Taper

25: Outer peripheral surface

30: the first thread

40: Crushing rib unit

50: second thread

Claims (10)

A wood screw structure, which mainly includes: A screw head section including a top and a neck extending from the top and tapering away from the top; A shaft section is integrally formed from the neck of the screw head section. The shaft section includes a first shaft portion connected to the neck, a second shaft portion, a third shaft portion, and a A tapered portion extending outwardly from the third shaft portion, wherein the second shaft portion is provided between the first shaft portion and the third shaft portion, and the third shaft portion is provided with Between the second shaft portion and the taper portion; A first thread, spirally protruding on the outer peripheral surface of the tapered portion, the second shaft portion and the third shaft portion; and At least one pulverizing rib unit, a spiral ring protruding from the outer peripheral surface of the third shaft portion and the pointed cone portion, and each of the pulverizing rib units intersects with the first thread to form an included angle, wherein the pulverizing rib unit includes A rib body and a plurality of crushed blocks protruding on the rib body; Among them, a first chip discharge port is formed between the crushed pieces; Wherein, the outer diameter of the crushed block is smaller than the thread diameter of the first thread, and larger than the diameter of the third shaft portion. According to the wood screw structure described in item 1 of the scope of patent application, the first thread provided at the third shaft portion has a plurality of second chip discharge ports. The wood screw structure described in item 1 of the scope of patent application, wherein each rib body forms a first side edge and a second side at the junction of the third shaft portion and the outer peripheral surface of the taper portion Side, and the first thread forms a third side and a fourth side at the junction of the second shaft portion, the third shaft portion, and the outer peripheral surface of the taper portion; wherein, the first thread forms a third side and a fourth side. One side and the third side intersect at the outer peripheral surface of the third shaft portion to form a first included angle, and the angle range of the first included angle is between 40 and 70 degrees. The wood screw structure described in item 3 of the scope of patent application, wherein the first side and the fourth side intersect at the outer peripheral surface of the third shaft portion to form a second included angle, and the second included angle The angle range is between 110 and 130 degrees. According to the wood screw structure described in item 3 of the scope of patent application, wherein the adjacent first side and the third side intersect at the outer peripheral surface of the tapered portion to form a third included angle, and the third included angle The angle range is between 50 and 70 degrees. The wood screw structure described in item 3 of the scope of the patent application, wherein the adjacent first side and the fourth side intersect at the outer peripheral surface of the tapered portion to form a fourth included angle, and the fourth included angle The angle range is between 110 and 130 degrees. The wood screw structure described in item 5 of the scope of patent application, wherein the first included angle and the angle are different from the third included angle. The wood screw structure described in item 3 of the scope of patent application, wherein the adjacent second side and the third side intersect at the outer peripheral surface of the third shaft portion to form a fifth included angle, and the fifth The range of the included angle is between 100 and 130 degrees, and the total range of the first included angle and the fifth included angle is between 150 and 200 degrees. For the wood screw structure described in item 1 of the scope of patent application, further the first shaft portion is adjacent to the second shaft portion and a second thread is formed on the side corresponding to the top. For the wood screw structure described in item 1 of the scope of patent application, the difference between the outer diameter of the crushed block and the thread diameter of the first thread is 0.6mm ~ 0.7mm.

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