CN1963242A - Screw nail - Google Patents

Abstract

The invention discloses a screw, which comprises a head part, a rod part, a tip part and a plurality of threads, wherein the threads are formed on the rod part and continuously coiled in a spiral shape; wherein the rod part is provided with a convex cutting part at the front section with screw thread towards the tip part for screwing the front section into the object to smoothly complete the first stage of cutting and rapid chip removal, and the rod part is provided with a concave cutting part at the rear section with screw thread towards the head part for allowing the rear section thereof to enter into the object to smoothly complete the second stage of cutting and rapid chip collection, and the screw can be provided with a cutting groove at the tip part or a plurality of cutting teeth at the outer side of the screw thread at the tip part to enhance the rapid screwing-in effect of the tip part of the screw; by the design, a screw fixing product with multiple effects of labor-saving cutting, quick chip removal, chip collection and the like is formed.

Description

a screw

technical field

The present invention relates to a screw, in particular to a screw with a convex cutting part and a concave cutting part respectively located between the screw threads, so that the screw can form a multi-layer structure with labor-saving cutting, fast chip removal and chip collection. Effective screw products.

Background technique

With the advancement of various industrial technologies, the structural design of the current screw has been developed from only simple locking to focusing on the work efficiency in the locking process and not destroying the integrity of the object to be locked, which can be achieved by the present invention New patents such as No. 556784 "Screw Improvement" and No. 289405 "Screws that integrate locking, stability, labor, speed, and multiple functions" in the Taiwan Patent Gazette that were designed earlier, approved and published as the main screws Representatives, it can be clearly seen that the two cases not only fully improved the deficiencies of traditional simple locking screws, but also achieved the goal of substantial improvement in the screws designed in each case in actual use.

However, for the "screw improvement" of the above two cases and the "screw that integrates locking, stability, labor-saving, fast and multifunctional", the present invention still feels that there should be room for improvement; for example, No. 556784 "Screw Improvement" "In the new patent case, although the rod has the structural function of cutting and collecting chips, when the screw starts to screw into an object such as wood, it is hindered by the hardness of the object, so the staff still needs to operate with considerable force, resulting in In the locking operation, there is still the lack of difficulty in the screw-in operation; another example is the new patent case No. 289405 "Screw that integrates stable locking, labor-saving, fast and multi-functional", although its rod has a cutting chip removal structure However, when the rod is screwed into the middle to the rear of the object, the crumbs cannot be discharged, and the rod pushes outward to the surrounding tissues of the object, causing the object to swell outward, and even seriously damage the appearance of the object.

In view of the above-mentioned two new patents, the present invention still has multiple functions such as cutting, chip removal and chip collection in the process of screw fixing, which is not ideal. Therefore, it has been engaged in this technical field for many years. Professional experience, in order to seek product excellence and innovative concepts, especially to improve and innovate the above-mentioned deficiencies of the screws, here, finally successfully developed a screw that can be locked at the same time, due to its structure. The functions of fast cutting, chip removal and chip collection are integrated in one design to achieve the utilization value of this industry.

Contents of the invention

The object of the present invention is to provide a screw with a plurality of screw threads that are continuously coiled in a helical shape on its shank; wherein the shank is provided with a protruding cutting portion at the front section that has threads toward the tip, for its The front part is screwed into the object to successfully complete the first stage of cutting and rapid chip removal, and the rod part is provided with a concave cutting part at the rear part with a thread towards the head for the introduction of the rear part. In the object, the second stage of cutting and fast chip collection can be successfully completed; in the process of locking the screw, it can achieve multiple functions such as labor-saving cutting, smooth and fast chip removal and chip collection.

Another object of the present invention is that, for the above-mentioned screw, it not only has the design of the convex cutting part and the concave cutting part, but also can be provided with a cutting groove at the tip of the screw, or a cutting groove on the outside of the thread at this place There are several cutting teeth, so that it has the auxiliary function of enhancing the fast screw-in of the tip of the screw, effectively improving the overall substantive benefits of the screw, so that the screw can form an innovative and practical screw-fastened product with enhanced substantive effects.

The present invention is realized by adopting the following technical solutions:

A screw comprising a head, a shank, a tip, and a plurality of threads formed on the shank that are spirally coiled continuously; the shank is provided with a protruding cutting portion at the front section toward the tip, And the stem part is provided with a concave cutting part for entering into the object at the rear section of the rod part that has a thread toward the head.

The aforementioned convex cutting portion may be in the shape of an inverted V convex rib.

The above-mentioned convex cutting portion may be in the shape of a rib that is obliquely reversed and convex outward.

The aforesaid convex cutting portion can be set on the rod portion obliquely between the threads.

The aforementioned concave cutting portion may be in the shape of a V-shaped concave groove.

The aforesaid concave cutting portion may be in the shape of an oblique V-shaped concave groove.

The above-mentioned concave cutting part can be set on the rod part obliquely between the threads.

The aforementioned screw can be provided with a cutting groove at the tip.

The aforementioned screw is provided with several cutting teeth on the outside of the thread at the tip.

Compared with the prior art, the present invention has obvious advantages and beneficial effects:

Due to the screw of the present invention, the shank is provided with a convex cutting part at the front part towards the tip, and the rear part of the shank with thread towards the head is provided with an inner hole for this place to enter into the object. Concave cutting part, so that the rear section can be introduced into the object, and the work of cutting and fast chip collection can be successfully completed; so that the screw can cut labor-saving, smooth and fast chip removal and chip collection during the locking process. , effectively improving the use efficiency of the screw.

Description of drawings

Fig. 1 is the overall schematic diagram of the present invention;

Fig. 2 is the enlarged schematic view of the three-dimensional part of the present invention;

Fig. 3 is a schematic cross-sectional view of the screw shaft of the present invention;

Fig. 4 is the implementation action diagram 1 of the present invention;

Fig. 5 is the implementation action figure 2 of the present invention;

Fig. 6 is a diagram of another embodiment of the present invention.

Detailed ways

Regarding the screw of the present invention, the technical means adopted and the effect of achieving the above-mentioned purpose are easy to understand. Hereby, a detailed description is made with the best embodiment in conjunction with the simple description of the drawings and the symbols of each component as follows:

First, please refer to Fig. 1 to Fig. 3 at the same time, the screw 2 designed by the present invention includes a head 21, a shank 22, a tip 23, and a helical continuous coil integrally formed on the shank 21. a plurality of threads 24; of which:

The shank 22 of the screw 2 is provided with several outer convex cutting parts 25 at the front section 221 having the thread 24 in the direction of the tip 23, so that the front section 221 can be screwed into the object 3 to smoothly complete the cutting and quick discharge. The first stage of work of chips, as shown in Figure 2 and Figure 4; in addition, the above-mentioned convex cutting part 25 can be in the shape of an inverted V convex rib, or in the shape of an oblique inverted V convex rib, and the outer The convex cutting portion 25 can be set obliquely on the shank 22 between adjacent threads 24 and 24 , with the added benefit of enhancing chip evacuation.

2 and 5, the shank 22 of the screw 2 is provided with a concave cutting portion 26 at the rear section 222 facing the head 21 with the screw thread 24, so that the rear section 222 can be cut at the front section 221. After importing the object 3, the second stage of cutting and fast chip collection can be successfully completed; in addition, the above-mentioned concave cutting part 26 can be in the shape of a V-shaped concave groove, or in the shape of an oblique V-shaped concave groove , and the concave cutting portion 26 can be obliquely set up on the rod portion 22 between the thread 24 and the thread 24, which has the effect of strengthening chip collection.

Please refer to Fig. 6, the above-mentioned screw 2 can also be provided with a cutting groove 231 at the tip 23, or several cutting teeth 241 can be provided on the outside of the thread 24 at the tip 23, so that the screw can be screwed into the object 3. At this time, a strong and powerful cutting effect is formed, so that the tip 23 of the screw 2 has an auxiliary drilling function of saving labor and quickly advancing into the object 3 .

Please refer to Fig. 4 and Fig. 5 , when the screw 2 is locked, besides initially using the above-mentioned screw 2, a cutting groove 231 is provided at the tip 23, or a number of cutting teeth 241 are provided at the front thread 24. , the tip 23 of the screw 2 can be smoothly inserted into the object 3 in the way of fast cutting and introduction; The pointed end of the protruding cutting part 25 between the threads 24, and then the auxiliary thread 24 strengthens the drilling and cutting of the structure of the object 3, so that the rod part 22 of the screw 2 enters the object 3 smoothly, and the chip-shaped The object is then discharged upward by the thread 24 and the convex cutting portion 25, so as to achieve one function of labor-saving and fast chip removal; The inner concave cutting part 26 of the rod part 22 then works behind the outer convex cutting part 25, and then concentrates the scraps discharged upwards by the outer convex cutting part 25, thereby effectively preventing the object 3 from being broken. Another function of labor saving and quick chip collection is achieved.

Therefore, it can be clearly known from the above that the designed screw 2 of the present invention mainly has an outer convex cutting portion 25 and an inner concave cutting portion 26 between the thread and the screw thread on the rod portion 22, and the outer convex cutting portion 25 is provided with On the screw rod 22 at the front section 221 of the screw 2 toward the tip 23, the concave cutting part 26 is arranged on the screw 22 at the front section 221 of the screw 2 toward the head 21, so that the screw 2 can be screwed into the object from the beginning. From 3 o'clock to the cutting process after the object 3 has been introduced, the convex cutting part 25 and the concave cutting part 26 can be used to assist the drilling operation of the thread 23 at the same time, and have the enhanced effect of double cutting, making the operation feel more labor-saving And fast, and the outer convex cutting part 25 and the inner concave cutting part 26 are respectively introduced into the object, and the work of chip removal and chip collection can be performed on the object 3 in sequence, which can effectively prevent the chip-like objects being cut from expanding and pushing outwards And cause object 3 to expand and rupture.

Finally, it should be noted that: the above embodiments are only used to illustrate the present invention rather than limit the technical solutions described in the present invention; Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims (9)

1, a kind of screw includes head, bar portion, tip, and is positioned at a plurality of screw threads that are formed with in the bar portion with the continuous coiling of helical; It is characterized in that:

This bar portion is provided with the evagination cutting portion at the leading portion place towards the tip, and is provided with at the back segment place that has screw thread towards head for this place in this bar portion and enters indent cutting portion in the object.

2, screw according to claim 1 is characterized in that this evagination cutting portion can be the rib-like of the evagination of falling V.

3, screw according to claim 1 is characterized in that this evagination cutting portion can be the rib-like of the oblique evagination of falling V.

4,, it is characterized in that this evagination cutting portion can be built in the bar portion being oblique between screw thread and the screw thread according to claim 1 or 2 or 3 described screws.

5, screw according to claim 5 is characterized in that this indent cutting portion can be the ditch strip of V word indent.

6, screw according to claim 1 is characterized in that this indent cutting portion can be the ditch strip of oblique V word indent.

7, screw according to claim 1 is characterized in that this indent cutting portion can be built in the bar portion in being oblique between screw thread and the screw thread.

8, screw according to claim 1 is characterized in that this screw is positioned at the place, tip and can be provided with cutting slot.

9,, it is characterized in that this screw is positioned at the screw thread outside of locating the tip and is provided with several cutting teeths according to claim 1 or 5 or 6 described screws.

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