CN201265579Y - Improvement of screw structure - Google Patents

Abstract

The utility model provides an improvement of screw structure, it includes at least: the screw comprises a screw body and a convex cone block, wherein a pointed cone end and a locking end for a screwdriver to insert are respectively arranged at two ends of the screw body, and the wall surface of the periphery of the screw body is provided with an external thread which extends spirally; the plurality of convex cone blocks are arranged on the wall surface between two adjacent threads in the external thread of the screw body, and the surface of each convex cone block is provided with a plurality of flat cutting surfaces extending towards different directions, so that sharp bent blade parts are respectively formed between the flat cutting surfaces, and at least one side surface of each convex cone block is jointed with the surface of the external thread. When the convex cone block is gradually screwed into a fixed material along with the external thread, each blade part can effectively cut and break the fiber of the fixed material, so that the frictional resistance to the screw body can be reduced, and the continuous damage of the fiber in the fixed material caused by improper internal stress can be avoided.

Description

Improvement of a screw structure

technical field

The utility model relates to a screw, in particular to an improvement of the screw structure.

Background technique

Existing screw structure, as shown in Figure 1, it is respectively provided with a pointed cone end 11 and a locking catch end 12 at the two ends of a screw body 10, can follow the structure of corresponding screwdriver in the center of described lock catch end 12 Shape (one word, cross or inner hexagon) is provided with a plug-in recess 121 for insertion, and a spirally extending external thread 13 is provided on the peripheral wall of the screw body 10; this structure is due to the external thread 13 is thinner and sharper. When in use, the external thread 13 will cut the fibrous tissue in the fixed material (wood) as the screw body 10 gradually increases the penetration depth, resulting in friction between the two As the size is increased, the operation of the locking screw body will often become more and more laborious, and it may even be difficult to complete the locking and turning smoothly, which also causes a lack of application.

Contents of the invention

The main purpose of the present utility model is to provide an improved screw structure, which can effectively reduce the operating force of the lock-rotating screw, so as to improve the smoothness of the overall operation.

Another object of the present invention is to provide an improved screw structure, which can effectively reduce the internal stress inside the fixed material, so as to prevent large-area material damage.

In order to achieve the above purpose and effect, the utility model adopts technical means including: a screw body and a convex cone block. The screw body is respectively provided with a pointed cone end and a locking end for screwdriver insertion at both ends. The wall surface at the periphery of the screw body is provided with a helically extending external thread; a plurality of convex cone blocks are arranged on the wall surface between two adjacent threads in the external thread of the screw body, and there are multiple convex cone blocks on the surface of each convex cone block. The flat surfaces extending in different directions can form sharply bent blades between the flat surfaces, and at least one side surface of each convex cone block is combined with the surface of the external thread.

Compared with the prior art, the improvement of the screw structure provided by the utility model can effectively reduce the operating force of the locking screw to improve the smoothness of the overall operation, and can effectively reduce the internal stress inside the fixed material to prevent large area of material damage occurs.

Description of drawings

Fig. 1 is a schematic diagram of an existing bolt structure that can improve lock-rotation efficiency;

Fig. 2 is a schematic structural view of the first embodiment of the utility model;

Fig. 3 is a schematic view of the structure screwed into the fixed material according to the first embodiment of the present invention;

Fig. 4 is a transverse sectional view of the structure of the first embodiment of the utility model screwed into the material to be fixed;

Fig. 5 is a schematic structural view of the second embodiment of the present invention.

Explanation of reference signs: 1, 10-screw body; 11-sharp end; 12-lock end; 121-recessed part; 13-external thread; 412-side flat face; 22,221-end flat face; 23,42-first blade; 231,43-second blade; 24,44-third blade; 25-fourth blade; 251- The fifth blade; 3-fixed material; 31-broken area; 41-upper flat surface.

Detailed ways

The above-mentioned and other technical features and advantages of the present utility model will be described in more detail below in conjunction with the accompanying drawings.

Referring to Fig. 2 to Fig. 4, it can be clearly seen that the structure of the first embodiment of the present utility model mainly includes parts such as screw body 1 and convex cone block 2, wherein said screw body 1 is a basic screw structure, a pointed cone end 11 and a locking end 12 are respectively provided at its two ends, and a locking recess 121 for screwdriver insertion is provided in the center of the locking end 12, and a screwdriver is provided on the peripheral wall of the screw body 1. The spirally extending external thread 13, a plurality of convex cone blocks 2 are adjacently arranged side by side on the wall surface between the external threads 13 of the screw body 1, and each convex cone block 2 is provided with two sides that gradually rise towards the center. Side flattened surfaces 21, 211, and a third blade portion 24 extending axially along the screw body 1 is formed at the junction of the two-sided flattened surfaces 21, 211. There are at least two end flat surfaces 22, 221 that descend obliquely outwards, and the first cutting edge 23 and the second cutting edge are respectively formed between the flat cutting surfaces 22, 221 at both ends and the flat cutting surfaces 21, 211 on both sides. 231, the fourth blade 25, the fifth blade 251;

When in use, each convex cone block 2 can be screwed into the fixed material 3 (such as: wood) gradually along with the external thread 13, the first blade 23, the second blade 231, the The third blade portion 24, the fourth blade portion 25, and the fifth blade portion 251 can cut the fibers in the fixed material 3 (contact parts) in different directions, so that they can be properly fractured to form A broken area 31, to reduce the frictional resistance to the screw body 1 (external thread 13), so that the screwing action is more labor-saving and smooth; at the same time, because the fibers inside the fixed material 3 are properly cut and broken Therefore, the internal stress of the screw body 1 screwed into the fixed material 3 can be effectively absorbed, and the fibers inside the fixed material 3 are prevented from being damaged and cracked.

Referring to Fig. 5, it can be seen that the structure of the second embodiment of the present utility model is provided with adjacent and parallel plural numbers on the upper and lower side surfaces of the external thread 13 of the screw body 1 (or only on the upper surface separately). Each convex cone block 4 has an upper flat surface 41 that extends from the wall of the screw body 1 to the middle section of the thread surface of the external thread 13 in a tapered triangle shape, and on the upper flat surface 41 Side flat surfaces 411, 412 perpendicular to the external thread 13 are respectively provided on both sides, so that the parts where both sides of the upper flat surface 41 connect with the two side flat surfaces 411, 412 respectively form a first cutting edge 42, a Two blades 43, and the junction between the flat surfaces 411, 412 on both sides forms a third blade 44;

In use, when each convex cone block 4 is gradually screwed into the fixed material 3 (such as: wood) along with the external thread 13, the first blade 42, the second blade 43 and the The third blade portion 44 can cut the fibers in the fixed material 3 (contact portion) in different directions, so as to achieve the same effect of reducing frictional resistance as in the first embodiment, and at the same time, undue internal stress can also be avoided. The fibers inside the fixed material 3 are caused to produce damage cracks.

It can be seen from the above that the improvement of the screw structure of the utility model has the effects of saving operating force, improving the smoothness of operation, reducing internal stress, and avoiding damage to the material structure of the screw joint. It has indeed industrial applicability and novelty. gender and progress.

The above description is only illustrative of the present utility model, rather than restrictive. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. , or equivalent, but all will fall within the protection scope of the present utility model.

Claims (5)

1. the improvement of a bolt structure, it comprises at least: screw body and convex cone piece, described screw body are respectively equipped with a pointed cone end and at two ends can be provided with the outside thread of spiral extension for the lock that bottle opener the inserts end of pulling at the wall of described screw body periphery; It is characterized in that:

Plural number convex cone piece is arranged in the outside thread of described screw body on the wall between adjacent two screw threads, and has the flat bevel that plural number extends to different direction on each convex cone piece surface, make the blade that forms sharp-pointed bending between each flat bevel respectively, at least one side surface of each convex cone piece is engaged in described externally threaded surface.

2. the improvement of bolt structure as claimed in claim 1, it is characterized in that, described convex cone piece has one and is the last flat bevel of the cone-shaped extension of convergent triangle by the outside screw thread edge of the wall of described screw body, and the both sides of flat bevel are provided with perpendicular to the flat bevel of described externally threaded side described.

3. the improvement of bolt structure as claimed in claim 2 is characterized in that, described convex cone piece extends to externally threaded flank of thread stage casing by the wall of described screw body.

4. the improvement of bolt structure as claimed in claim 2 is characterized in that, the position that described flat bevel both sides are connected with the flat bevel of described side forms one first blade, one second blade respectively, and the connected portion between the flat bevel in described both sides forms one the 3rd blade.

5. the improvement of bolt structure as claimed in claim 3 is characterized in that, the position that described flat bevel both sides are connected with the flat bevel of described side forms one first blade, second blade respectively, and the connected portion between the flat bevel in described both sides forms one the 3rd blade.

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