TWM482002U - Improved structure of wood screw - Google Patents

Description

Wood screw structure improvement

This creation is about the improvement of a wood screw structure, especially an innovative structure of wood screws that can be quickly locked with low torque and can be quickly chipped and can be stably locked so as not to cause workpiece cracking.

According to the recent construction of wooden houses, there are more and more trends, and the requirements for the quality of wood are more stringent. Even the hardness of the wood, even ordinary nails, is less than one-third with a hammer and a nail. The depth is then bent. If the screw is used to construct the lock, the hardness of the wood is too high. When the screw is screwed in, the wood cannot be squeezed out, and the locking is difficult to break even if it is locked smoothly. Higher torque and rotational deformation, so that after a period of time, it is automatically broken due to the stress relationship inside. However, the current construction method for thicker planks must be drilled before the screw and screwed in, to reduce the construction problem to overcome this construction problem. Time, 遂 study the feasibility of using the improved screw directly.

Wood screws are widely used for fixing or combining workpieces. Generally, ordinary wood screws are inserted from the tip when screwed into the wood. When the primary thread is touched, the pull-in action is generated, and the wood is gradually opened by the inclination. The wood has been pushed by the strength of the expansion, until the highest point of inclination, the density of the wood can not withstand the push and crack or split, the degree of splitting will have a great relationship due to the thickness, width and wood fiber direction of the wood, if the wood The thickness is thinner, the width is narrower, and the cracking is the most serious. If the wood fiber is a vertical surface, the wood board is bound to be unusable. If the wood fiber is horizontally straight, the wood is also weak due to cracking or cracking. If the thickness of the wood itself is large and the width is large, the screw screwed into the screw will produce a gradual cracking around the screw hole, and the wood fiber will be drilled around 360° to produce different cracks. When the screw is screwed into the torque, some of the screws have been broken or bent until the head of the screw is completely locked into the plane of the wood. The rotational stress and the adhesion tension can cause the screw to break inside the wood at any time; because the tooth segment of the wood screw does not have any help to screw the wood screw into the workpiece, or discharge it to generate debris during the screwing process. Structural design, here is the following missing:

1. The screwing process is more time consuming: the wood screw does not have any structural design that discharges its debris during the screwing process, so that the debris generated during the screwing process cannot be quickly discharged outside the workpiece. It remains in the inside of the workpiece and hinders the screwing of the wood screws, causing the wood screws to screw into the work for too long.

2. The screwing process is more laborious: the wood screw does not have any structural design that can be screwed into the workpiece, so that the resistance generated when screwing in is large, so the user needs to apply a large force. The screw can be screwed into the workpiece smoothly, which will cause the hand to be too laborious and easy to feel the hand tired.

3. The workpiece is prone to cracking during the screwing process: due to the structure of the wood screw without chipping, a large amount of debris remains in the workpiece, and the residual debris is pressed into the workpiece by the screwing of the wood screw. Pushing and thus causing cracking of the workpiece.

The reason is that the creators, in view of this, uphold the rich experience in design and development and actual production of the relevant industries for many years, researching and improving the existing structures and defects, and providing a wood screw structure improvement, in order to achieve better practical value. .

This creation is about the improvement of a wood screw structure, which mainly improves the defects caused by the traditional wood screws in actual use, and the wood screws can be quickly locked with low torque, and can be quickly chipped and stably locked. It does not cause the effect of workpiece cracking.

In order to achieve the above-mentioned implementation objectives, the present author has developed the following wood screw structure improvement, which mainly comprises a screw head and a rod body, wherein the rod system is extended by the screw head, and a screw-in tip end is formed at the front end of the rod body. a threaded portion is provided from the screw-in tip portion, and a cutting groove for cutting wood, a saw blade having a meshing cutting function, and a spiral chip flute for removing wood chips are respectively arranged from bottom to top in the screw portion. And a tightening screw portion for improving the locking stability above the screw portion; thereby, the wood screw structure with small screwing torque, quick locking, good chip removal and good locking force is achieved. By.

The wood screw structure is improved as described above, wherein the cutting tail groove is disposed on a threaded portion of the shaft into which the tip end portion is screwed.

The wood screw structure is improved as described above, wherein the serrated blade portion is connected above the cutting tail groove and formed at the tooth peak of the screw segment; further the serrated blade portion is continuously disposed along the tooth peak of the screw segment , or the number of serrated blades is separated by a paragraph.

The wood screw structure is improved as described above, wherein the chip flute is engaged above the serrated blade and formed at the peak of the thread segment, and is arranged in a spiral upward direction.

The wood screw structure is improved as described above, wherein the pressing screw portion is located above the screw segment and is in the same direction as the screw segment.

In order to make the technical content, creative purpose and the effect achieved by this creation more complete and clear, please elaborate below, and please refer to the drawings and drawings:

First of all, please refer to the first to third figures. The schematic diagram of the improved wooden screw structure is shown in the perspective of a three-dimensional appearance. It mainly comprises a screw head (1) and a rod body (2). The rod body (2) is made up of a screw head. (1) extending out, forming a screw-in tip end (21) at the front end of the rod body (2), and screwing the screw head on the rod body (2) by screwing the tip end portion (21) upward a portion (22), wherein: the thread portion (22) is located at the screw-in tip portion (21) with a cutting groove (23) for cutting wood, and a thread portion above the cutting groove (23) (22) The serrated tooth peaks of a distance are arranged at least three serrated blade portions (24) having a meshing cutting function, and the two adjacent serrated blade portions (24) are provided with a screw cut portion (25), and each The serrated blade portion (24) includes a plurality of cutting teeth (241), and a plurality of chip removing grooves (26) for removing wood chips are looped around the plurality of screw peaks of the screw portion (22) above the serrated blade portion (24), and Number of flutes (26) a spiral arrangement is formed on the surface of the screw portion (22), and a tightening screw portion (3) for stabilizing the locking is provided above the screw portion (22), and the tightening screw portion (3) is Made up of multiple threaded teeth.

Further, the pressing screw portion (3) and the screw portion (22) are disposed in the same rotational direction, and the lead angles of the threaded teeth of the screw portion (3) and the screw portion (22) are different.

Referring to the first to third figures, when used, the wood screws are arranged vertically so that they are screwed into the tip end (21) against the surface of the workpiece, and the tail groove of the wood screw is used (23 Correspondingly, the workpiece is spun and tapped, and the wood screw is screwed into the tail groove (23) of the tip end portion (21) to simultaneously cut the workpiece, thereby screwing the wood screw into the workpiece; then, let the The screw-cut portion (25) of the wood screw contacts and cuts the workpiece, and the wood screw is screwed into the workpiece, and the serrated blade portion (24) of the screw portion (22) of the wood screw is cut by the screw-cut portion (25). A chipping space is formed between the peripheral edges of the inner edge of the workpiece, so that the cutting debris generated during the screwing of the screw portion (22) of the wood screw and the screw-cut portion (25) thereof into the workpiece will Exhaust from the chip evacuation space, and at the same time, using the cutting ability of the cutting teeth (241) provided on each serrated blade portion (24), the debris generated after the workpiece is cut by the screw cutting portion (25) is cut and shredded. Chips can be cut into smaller pieces Units to accelerate the chip rate; enabling the state where the wood screw is smooth and unhindered chip is locked into the workpiece, but also by securely positioned on the workpiece.

Then, continue to screw the wood screw, so that the screw portion (22) of the rear section gradually enters the workpiece. When the screw portion (22) presses the workpiece with the screw, the workpiece will be similarly geared. The cutting action of the meshing, therefore, the wood chips can be removed by a plurality of chip flutes (26) ringed at the peak of the screw portion (22), and the chip flutes (26) are arranged in the arrangement by the rotation direction. The threaded portion (22) [further in the threaded portion (22) may be provided with one or more spirally arranged flutes (26), as shown in the fourth to fifth figures], which can be received by the serrated blade (24) ) and the debris cut by the screw cutting portion (25), thereby greatly reducing the pressure of directly pressing the workpiece, so that the workpiece is not subjected to cracking due to excessive pressure when drilling is drilled; When the workpiece is drilled and tapped, the produced scraps can be guided out along the chip flutes (26) of the creative rod body (2), and the crucible can be prevented from being blocked from being screwed into the tip end ( 21) The situation happens, so that the action of cutting and attacking goes smoothly. .

Further, the wood screw continues to tap into the workpiece, and the end of the wood screw body (2) is located above the screw portion (22) and is provided with a tightening screw portion (3) composed of a plurality of threaded teeth. The pressing screw portion (3) and the screw portion (22) are arranged in the same rotation direction, and the lead angles of the tightening screw portion (3) and the screw portion (22) are different; The portion (22) is right-handed, and when the thread portion (22) is screwed into the right-handed tightening screw portion (3), the right-handed tightening screw portion (3) is used to generate debris discharge obstruction. And the right-handed tightening screw portion (3) is pushed inwardly by the screw, and the right-handed tightening screw portion (3) and the right-handed screw portion (22) have different thread lead angles, and The right-handed tightening screw portion (3) breaks the screwing path of the original right-handed screw portion (22), and when the wood screw is screwed in and fixed, the unique effect of the solid fastening and the firmness of the non-reversing loosening are achieved. efficacy.

The above-mentioned embodiments or drawings are not intended to limit the structure of the present invention, and any suitable variations or modifications of those skilled in the art should be considered as not departing from the scope of the invention.

It can be seen from the above components and implementation description that this creation has the following advantages and effects compared with the existing structure:

1. The wood screw structure of this creation is improved. With the setting of the cutting groove, the tip of the spin can be quickly locked, making it easy to drill for hard wood.

2. The structure of the wood screw is improved. By the arrangement of the spirally arranged flutes, the pressure of directly pressing the workpiece can be greatly reduced during use, so that the workpiece is not subjected to excessive pressure when being drilled. Cracks are produced to prevent cracking or cracking of wood.

3. The wood screw structure of this creation is improved, and the overall structure is set to achieve the wood screw structure with small screwing torque, quick locking, good chip removal, good locking force and labor-saving construction conditions.

4. The structure of the wood screw is improved. The end of the wood screw rod body is located above the screw portion, and a pressing screw portion composed of a plurality of threaded teeth is arranged, and the pressing screw portion and the screw portion are the same. To set and tighten the lead angle of the threaded part and the threaded part, the wood screw increases the adhesion and the locking force, achieving the unique effect of solid fastening and the firmness of not loosening loosely. efficacy.

In summary, the present embodiment can achieve the expected use efficiency, and the specific structure disclosed is not only found in similar products, nor has it been disclosed before the application, and has fully complied with the requirements and requirements of the Patent Law.爰Proposing an application for a new type of patent in accordance with the law, and pleading for a review and granting a patent, it is really sensible.

(1)‧‧‧ 螺头

(2) ‧ ‧ rod body

(21) ‧‧‧ Screwed into the tail

(22)‧‧‧ Threading

(23)‧‧‧ Cutting trough

(24)‧‧‧Saw blade

(241)‧‧‧ cutting teeth

(25) ‧‧‧screw cut

(26)‧‧‧ Chip flutes

(3) ‧‧‧Forced the screw

The first picture: the three-dimensional appearance of the creation

Second picture: a side view of the creation

The third picture: a schematic view of the chip flute of the present creation

The fourth picture: the three-dimensional appearance of the multiple chip flutes in this creation

Figure 5: Schematic diagram of multiple flutes in this creation

(1)‧‧‧ 螺头

(2) ‧ ‧ rod body

(21) ‧‧‧ Screwed into the tail

(22)‧‧‧ Threading

(23)‧‧‧ Cutting trough

(24)‧‧‧Saw blade

(241)‧‧‧ cutting teeth

(25) ‧‧‧screw cut

(26)‧‧‧ Chip flutes

(3) ‧‧‧Forced the screw

Claims (5)

The utility model relates to a wood screw structure improvement, which mainly comprises a screw head and a rod body, the rod system is extended by the screw head, forms a screw-in tip end at the front end of the rod body, and is screwed into the tip end of the rod body upwards The spiral disk is provided with a threaded portion, wherein: the screw portion is located at the end of the screwing tip and has a cutting tail groove, and at least three of the screw teeth at a distance from the screw portion above the cutting tail groove are arranged at least three. a serrated blade portion, and a screw cut portion is arranged between the two adjacent serrated blade portions, and each serrated blade portion includes a plurality of cutting teeth, and a chip flute is arranged around the screw thread peak of the screw portion above the serrated blade portion And the plurality of chip flutes are arranged in a spiral arrangement on the surface of the screw portion, and a tightening screw portion is formed above the screw portion, and the pressing screw portion is composed of a plurality of threaded teeth. The wood screw structure as described in claim 1 is improved, wherein one or more spirally arranged chip flutes may be arranged on the thread portion. The wood screw structure according to claim 1 or 2, wherein the pressing screw portion and the thread segment are in the same direction of rotation. The wood screw structure according to claim 1 or 2, wherein the tightening screw portion and the thread portion have different lead angles. The wood screw structure according to the third aspect of the patent application is improved, wherein the lead angle of the pressing screw portion and the thread portion is different.