TWI626385B - Screw structure - Google Patents

Abstract

The invention relates to a screw structure. The screw has a screw head, a rod body extending downward from the screw head, a screw tooth is provided on the outer periphery of the rod body, a pointed tail is provided at the lower end of the rod body, and the screw head is extended downward. There is a tapered portion, and the tapered portion is provided with an anti-reverse mechanism. The anti-reverse mechanism is composed of at least one stepped structure. Because the anti-reverse mechanism is provided on the tapered portion of the screw head of the screw, the The anti-reverse mechanism is composed of at least one stepped structure, so that when the screw is screwed into the workpiece, if the screw is to be screwed out of the workpiece, the anti-reverse mechanism can form a blocking effect and prevent the screw. It is easily screwed out of the workpiece, thereby improving the anti-reverse effect of the screw, thereby improving the overall use of the screw.

Description

Screw structure

The present invention relates to a screw structure, and more particularly to a screw structure that prevents the screw from being easily screwed out, thereby improving the anti-reverse effect of the screw, thereby improving the overall use efficiency of the screw.

The conventional screw 1 is shown in FIG. 1 and includes a screw head 11, and a rod body 12 extending downward from the screw head 11. The outer periphery of the rod body 12 is provided with a spiral surrounding outer screw 13. The tip is provided with a pointed tail portion 14.

When the screw 1 is locked, the pointed tail portion 14 is first pressed against the surface of the workpiece, and then the power tool or hand tool is forced by the screw head 11 to rotate the screw 1 and the pointed tail portion 14 is used to drill the screw into the workpiece. However, the conventional screw 1 is screwed into the workpiece. Similarly, the screw 1 can be rotated by the force of the screw head 11 through the power tool or hand tool to make the screw 1 screw out of the workpiece. However, there are some special requirements for the screw 1 to avoid being easily screwed out of the workpiece.

Therefore, how to design a screw 1 with an anti-reverse effect, so that the screw 1 cannot be easily screwed out of the workpiece, has become a major issue for screw manufacturers.

The main purpose of the present invention is to effectively solve the problem that the conventional screw can be easily screwed out because there is no anti-reverse mechanism.

The technical means adopted by the present invention to achieve the above object is: a screw structure, The screw has a screw head, a rod body extending downward from the screw head, a screw tooth is provided on the outer periphery of the rod body, a lower end of the rod body is provided with a pointed tail portion, the screw head is extended downward with a tapered portion, and the tapered portion An anti-reverse mechanism is provided on the part, and the anti-reverse mechanism is composed of at least one stepped structure.

The effect that the present invention can achieve through the above technical means is that, since the tapered portion of the screw head of the screw is provided with an anti-reverse mechanism, the anti-reverse mechanism is composed of at least one stepped structure, thereby After the screw is screwed into the workpiece, if the screw is to be screwed out of the workpiece, the anti-reverse mechanism can form a blocking effect, and can prevent the screw from being easily screwed out of the workpiece, thereby improving the anti-reverse effect of the screw , To further improve the overall use of the screw.

1‧‧‧screw

11‧‧‧Screw head

12‧‧‧ shaft

13‧‧‧External screw

14‧‧‧ pointed tail

2‧‧‧ Screw

21‧‧‧Screw head

211‧‧‧Rotating part

212‧‧‧taper

22‧‧‧ Rod

221‧‧‧ Neck

23‧‧‧Screw

23a‧‧‧ Umbrella screw

231‧‧‧ Neck screw

24‧‧‧ pointed tail

3‧‧‧anti-reverse agency

Figure 1 is a perspective view of a conventional screw.

Figure 2 is a perspective view of the screw of the present invention.

FIG. 3 is another embodiment of the screw of FIG. 2.

FIG. 4 is an embodiment in which the anti-reverse mechanism of the present invention is provided on the neck of the rod body.

Fig. 5 is another embodiment of the anti-reverse mechanism of the present invention provided on the neck of the rod body.

One of FIGS. 6 and 6 is another embodiment of the anti-reverse mechanism of the present invention provided on the neck of the rod body.

Figures VII and VII are examples in which the anti-reverse mechanism of the present invention is provided at the pointed tail.

Figures 8 and 8 and 8 and 2 are yet another embodiment of the screw teeth of the screw of the present invention.

Fig. 9 shows the anti-reverse mechanism of the present invention arranged on a screw tooth.

In order to make it easier for your reviewers to understand the effect that the structure of the present invention can achieve, the description with drawings is as follows:

First, please refer to FIG. 2. The screw 2 of the present invention has a screw head 21. A rod body 22 extends downward from the screw head 21. The rod body 22 may be a circular or triangular columnar body, or the rod body. 22 has both circular and triangular cylinders. The outer peripheral edge of the rod 22 is provided with a screw 23. A lower end of the rod 22 is provided with a pointed tail portion 24. The screw 23 extends to the pointed tail portion 24.

As shown in FIG. 2, a turning portion 211 is recessed at the top end of the screw head 21 of the screw 2. The screw head 21 is extended with a tapered portion 212 toward the rod body 22. The tapered portion 212 is provided with an anti-reverse mechanism 3. The anti-reverse mechanism 3 is composed of at least one stepped structure in the direction of the screw 23. Therefore, when the screw 2 is screwed into the workpiece (not shown in the drawing), at least a part or all of the tapered portion 212 is also screwed into the workpiece. Therefore, when the screw 2 is screwed out of the workpiece, the anti-reverse rotation The mechanism 3 can form a blocking effect, and can prevent the screw 2 from being easily screwed out of the workpiece, thereby improving the anti-reverse effect of the screw 2.

As shown in FIG. 3, the reverse rotation prevention mechanism 3 on the tapered portion 212 of the screw 2 is extended to the upper end surface of the screw head 21, thereby improving the reverse rotation prevention effect of the screw 2.

As shown in FIG. 4, the lower end rod body 22 of the screw head 21 of the screw 2 of the present invention has a section of a neck portion 221 without a screw thread, and the screw thread 23 is extended from the lower end of the neck portion 221 to the pointed tail portion 24; An anti-reverse mechanism 3 is provided on 221. More specifically, the anti-reverse mechanism 3 is provided between the lower end of the tapered portion 212 of the screw head 21 and the upper end of the thread 23; the anti-reverse mechanism 3 follows the rod body. 22 A stepped structure with at least one or more in the long axis direction. Therefore, when the screw 2 is screwed into the workpiece, at least a part of the neck 221 is also screwed into the workpiece. Therefore, when the screw 2 is screwed out of the workpiece, the anti-reverse mechanism 3 can form a blocking effect and prevent The screw 2 is easily screwed out of the workpiece, thereby improving the anti-reverse effect of the screw 2 fruit.

As shown in FIG. 5, the anti-reverse mechanism 3 provided between the lower end of the tapered portion 212 of the screw head 21 and the upper end of the screw 23 is stepped at least one or more steps obliquely with the long axis of the rod body 22 The structure makes it possible to further improve the anti-reverse effect of the screw 2.

As shown in FIG. 6, the anti-reverse mechanism 3 provided between the lower end of the tapered portion 212 of the screw head 21 and the upper end of the screw 23 is extended upward from the upper end of the screw 23, but not extended to the screw. The tapered portion 212 of the head 21; more specifically, the neck portion 221 between the upper end of the anti-reverse mechanism 3 and the lower end of the tapered portion 212 of the screw head 21 is not provided with a screw 23, and the anti-reverse mechanism 3 is smooth. The screw teeth 23 are composed of at least one stepped structure in the direction, thereby improving the anti-reverse effect of the screw 2.

As shown in FIG. 6, the neck 221 of the rod body 22 between the lower end of the tapered portion 212 of the screw head 21 and the anti-reverse mechanism 3 is provided with a neck screw 231, and the outer diameter of the neck screw 231 is equal to Or slightly larger than the outer diameter of the anti-reverse mechanism 3, whereby the neck screw 231 can also be screwed into the workpiece to have a screwing effect, thereby further improving the anti-reverse effect of the screw 2.

As shown in FIG. 7, the screw 2 of the present invention is provided with an anti-reverse mechanism 3 on the pointed tail portion 24, and the neck 221 at the lower end of the tapered portion 212 of the screw head 21 is not provided with a screw 23. The anti-reverse mechanism 3 is smooth The screw 23 is composed of at least one step-like structure in the direction, so that when the screw 2 is screwed into the workpiece, the pointed tail portion 24 is screwed into the workpiece. When the screw 2 is screwed out of the workpiece, the anti-reverse rotation is prevented. The mechanism 3 can form a blocking effect, and can prevent the screw 2 from being easily screwed out of the workpiece, thereby improving the anti-reverse effect of the screw 2.

As shown in FIG. 7, the neck 221 at the lower end of the tapered portion 212 of the screw head 21 is further provided with a neck screw 231, that is, the screw 23 of the rod body 22 is formed by The screw head 21 is extended to the pointed tail portion 24, so that the neck 221 at the lower end of the tapered portion 212 of the screw head 21 can also be screwed into the workpiece to have a screwing effect, thereby further improving the screw 2 Anti-reverse effect.

As shown in FIG. 8, the neck 221 of the lower end of the tapered portion 212 of the screw head 21 of the screw 2 of the present invention is not provided with a screw 23. The screw 2 is provided with the anti-reverse mechanism 3 on the screw 23. The tooth 23 is an umbrella-shaped screw 23a. The anti-reverse mechanism 3 is composed of at least one stepwise structure along the direction of the umbrella-shaped screw 23a. When the screw 2 is screwed into the workpiece, the screw 2 When the workpiece is to be screwed out, the anti-reverse mechanism 3 can form a blocking effect, and can prevent the screw 2 from being easily screwed out of the workpiece, thereby improving the anti-reverse effect of the screw 2.

As shown in FIG. 8, the screw 2 has no screw 23 on the neck 221 at the lower end of the tapered portion 212 of the screw head 21. The screw 2 is provided with a screw of the anti-reverse mechanism 3 toward the pointed tail portion 24. The tooth 23 is a normal screw tooth shape, that is, the screw 23 of the umbrella screw 23a facing the pointed tail portion 24 is a normal screw tooth shape. The outer diameter of the screw 23 is equal to or slightly larger than the anti-reverse mechanism. 3, thereby increasing the anti-reverse effect of the screw 2.

As shown in FIG. 8bis, the neck 221 at the lower end of the tapered portion 212 of the screw head 21 is further provided with a neck screw 231, that is, the screw 23 of the rod body 22 is extended from the screw head 21 to The pointed tail portion 24, the screw 2 on the neck portion 221, and the screw teeth 23 provided with the anti-reverse mechanism 3 toward the pointed tail portion 24 are all normal screw teeth, that is, the umbrella-shaped screw 23a faces the screw 2 The neck 221, and the thread 23 of the umbrella-shaped thread 23a facing the pointed tail portion 24 are normal thread shapes, and the outer diameter of the thread 23 is equal to or slightly larger than the outer diameter of the anti-reverse mechanism 3. With this, the lower end of the tapered portion 212 of the screw head 21 The neck 221 can also be screwed into the workpiece to have a screwing effect, thereby further improving the anti-reverse effect of the screw 2.

As shown in FIG. 9, the screw 23 of the screw 2 of the present invention is extended from the screw head 21 to the pointed tail portion 24. The screw 2 is provided with the anti-reverse mechanism 3 on the screw 23, and the anti-reverse mechanism 3 It is composed of at least one stepwise structure along the direction of the screw 23, so that when the screw 2 is screwed into the workpiece, if the screw 2 is to be screwed out of the workpiece, the anti-reverse mechanism 3 can form a blocking effect, The screw 2 can be prevented from being easily screwed out of the workpiece, thereby improving the anti-reverse effect of the screw 2.

The effect of the present invention is that, since the tapered portion 212 of the screw head 21 of the screw 2 or the neck portion 221 or the pointed tail portion 24 of the rod body 22 is provided with an anti-reverse mechanism 3, the anti-reverse mechanism 3 is composed of at least one or more It has a step-like structure, so that when the screw 2 is screwed into the workpiece, if the screw 2 is to be screwed out of the workpiece, the anti-reverse mechanism 3 can form a blocking effect and prevent the screw 2 from being easily screwed out. Outside the workpiece, the anti-reverse effect of the screw 2 can be improved, and the overall use efficiency of the screw 2 can be improved.

In summary, the screw of the present invention can effectively solve the lack of easy screwing out of the conventional screw through repeated testing, and it has practical, novel, and progressive elements, and has not been found in the market or in publications. When submitting an application for an invention patent, you are kindly requested to examine the function of granting the invention patent right.

Claims (10)

A screw structure, the screw has a screw head, a rod body is extended downward from the screw head, the outer periphery of the rod is provided with a screw tooth, the lower end of the rod body is provided with a pointed tail portion, and the screw head is extended downward with a tapered portion , Characterized in that: the tapered portion is provided with an anti-reverse mechanism, the anti-reverse mechanism is extended to the upper end face of the screw head, and the anti-reverse mechanism is composed of at least one stepped structure; the rod system It can be a circular or triangular cylinder, or the rod can have both circular and triangular cylinders. A screw structure, the screw has a screw head, a rod body is extended downward from the screw head, the outer periphery of the rod is provided with a screw tooth, the lower end of the rod body is provided with a pointed tail portion, and the screw head is extended downward with a tapered portion The rod body at the lower end of the screw head has a section of a screw-free neck, which is characterized in that: the screw-free neck is provided with an anti-reverse mechanism, and the anti-reverse mechanism is formed by at least one stepped structure. The rod system may be a circular or triangular cylindrical body, or the rod may have both a circular and a triangular cylindrical body; the anti-reverse mechanism provided between the lower end of the tapered portion of the screw head and the upper end of the screw tooth is connected with The long axis of the rod body is constituted by a stepped structure with at least one or more in an oblique direction. A screw structure, the screw has a screw head, a rod body is extended downward from the screw head, the outer periphery of the rod is provided with a screw tooth, the lower end of the rod body is provided with a pointed tail portion, and the screw head is extended downward with a tapered portion , Characterized in that: the pointed tail is provided with an anti-reverse mechanism, the anti-reverse mechanism is composed of at least one or more step-like structures; the rod system may be a circular or triangular columnar body, or the rod body has a round shape at the same time Shape and triangular cylinder; the rod body at the lower end of the screw head has a neck portion, and the neck portion is further provided with a neck screw thread, and the screw thread of the rod body is extended from the screw head to the pointed tail and the neck portion. The screw teeth and the screw teeth provided with the anti-reverse mechanism toward the pointed tail are all normal screw teeth, that is, the neck of the screw above the umbrella screw, and the umbrella screw facing the pointed tail The screw thread is a normal screw tooth shape, and the outer diameter of the normal screw thread is equal to or slightly larger than the outer diameter of the anti-reverse mechanism. The screw structure according to any one of claims 1 to 3, wherein the screw head is provided with a rotating part at the upper end. The screw structure according to any one of claims 1 to 3, wherein the screw tooth is provided with an anti-reverse mechanism, and the anti-reverse mechanism is composed of at least one stepped structure. The screw structure according to item 2 of the scope of patent application, wherein the anti-reverse mechanism is provided between the lower end of the tapered portion of the screw head and the thread end; the anti-reverse mechanism is at least along the long axis direction of the rod. It consists of more than one step-like structure. The screw structure according to item 2 of the scope of patent application, wherein the anti-reverse mechanism provided between the lower end of the tapered portion of the screw head and the upper end of the screw tooth is extended upward from the upper end of the screw tooth, but does not extend. It is set to the tapered part of the screw head; there is no screw thread on the neck between the upper end of the anti-reverse mechanism and the lower end of the tapered part of the screw head. The screw structure according to any one of claims 1 to 3, wherein the screw thread is an umbrella screw thread, the umbrella screw thread is provided with an anti-reverse mechanism, and the anti-reverse mechanism is formed by at least It consists of more than one step-like structure. A screw structure, the screw has a screw head, a rod body is extended downward from the screw head, the outer periphery of the rod is provided with a screw tooth, the lower end of the rod body is provided with a pointed tail portion, and the screw head is extended downward with a tapered portion The rod body at the lower end of the screw head has a section of a screw-free neck, which is characterized in that: the screw-free neck is provided with an anti-reverse mechanism, and the anti-reverse mechanism is formed by at least one stepped structure. The rod system can be a circular or triangular cylindrical body, or the rod can have both circular and triangular cylindrical bodies; the rod at the lower end of the screw head has a neck, and the neck is further provided with a neck screw. The outer diameter of the neck screw is equal to or slightly larger than the outer diameter of the anti-reverse mechanism. A screw structure, the screw has a screw head, a rod body is extended downward from the screw head, the outer periphery of the rod is provided with a screw tooth, the lower end of the rod body is provided with a pointed tail portion, and the screw head is extended downward with a tapered portion , Characterized in that: the tapered portion is provided with an anti-reverse mechanism, the anti-reverse mechanism is extended to the upper end face of the screw head, and the anti-reverse mechanism is composed of at least one stepped structure; the rod system It can be a circular or triangular cylindrical body, or the rod body has both circular and triangular cylindrical bodies; the rod body at the lower end of the screw head has a neck portion, and the neck portion is further provided with a neck screw thread. The tooth system is extended from the screw head to the pointed tail, the neck screw and the screw provided with the anti-reverse mechanism toward the pointed tail are all normal screw teeth, that is, the upper part of the umbrella screw The neck of the screw and the thread of the umbrella-shaped thread toward the pointed tail are normal thread shapes. The outer diameter of the normal thread is equal to or slightly larger than the outer diameter of the anti-reverse mechanism.