Self-tapping screw with protection effect

Abstract

The utility model relates to the technical field of self-tapping screws, and discloses a self-tapping screw with a protection effect, which comprises a first rod body, a second rod body positioned in the first rod body and a rotating block positioned at the top of the second rod body, the second rod body comprises a fixing groove formed in the middle position in the first rod body, and an internal thread is arranged on the inner side of the fixing groove; the hexagonal groove is formed in the top end in the first rod body; the first outer thread is arranged on the outer side of the first rod body, the second outer thread is arranged on the outer side of the second rod body, the multiple sets of through grooves are formed in the rotating block, the clamping grooves are formed in the bottoms of the through grooves, and the fixing block is arranged above the top of the rotating block. The second rod body can be disassembled and assembled from the fixing groove through the internal thread and the second external thread, the first rod body can be disassembled and assembled for use through the hexagonal groove in the top of the fixing groove, and a set of screws can be disassembled into two screws for use, so that the use effect of the screws is better, and the utilization rate of the screws is increased.

Description

Technical Field

[0001] The utility model relates to the field of self-tapping screws, in particular to a self-tapping screw with a protective effect. Background Art

[0002] Self-tapping screws are quick-install fasteners made of steel with a galvanized and passivated surface. Self-tapping screws are mostly used to connect thin metal plates. When connecting, first make a threaded bottom hole for the connected part, and then screw the self-tapping screw into the threaded bottom hole of the connected part.

[0003] Application number CN202322090063.8 discloses a self-tapping screw with a protective effect, comprising a main body mechanism, a protective mechanism and a shell mechanism, wherein the protective mechanism is located at the upper end of the main body mechanism, and the shell mechanism is located at the lower end of the main body mechanism...This self-tapping screw with a protective effect, through the structure of the shell mechanism, facilitates the self-tapping screw with a protective effect to avoid contact between the user and the external thread during actual use, thereby preventing accidental scratches; after use, the cross groove of this self-tapping screw is easily corroded and damaged for a long time, which will affect the disassembly and assembly of the self-tapping screw, and generally the screw is a solid structure, resulting in a high production cost of the screw, which is not convenient for the use of the self-tapping screw. Utility Model Content

[0004] The purpose of the utility model is to provide a self-tapping screw with a protective effect to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a self-tapping screw with a protective effect, comprising a rod body 1, a rod body 2 located inside the rod body 1, and a rotating block located at the top of the rod body 2, wherein the rod body 2 includes:

[0006] A fixing groove is arranged at a middle position inside the rod body, and an internal thread is arranged inside the fixing groove;

[0007] A hexagonal groove is arranged at the top of an inner portion of the rod body;

[0008] External thread 2 is arranged on the outer side of rod body 2.

[0009] Preferably, an external thread 1 is provided on the outer side of the rod body 1.

[0010] Preferably, a plurality of groups of through grooves are provided inside the rotating block, a clamping groove is provided at the bottom of the through groove, a fixed block is provided above the top of the rotating block, a cross groove is provided at the middle position of the top of the fixed block, an empty groove is provided at the middle position of the bottom of the rotating block, a protrusion is provided at the middle position of the top of the rotating block, and a clamping block is provided at the bottom of the fixed block at the position of the through groove.

[0011] Preferably, the second external thread matches the internal thread, and the second external thread is detachably connected to the fixing groove via the internal thread.

[0012] Preferably, the second rod body is detachably connected to the fixing groove via a second external thread and an internal thread.

[0013] Preferably, the top end of the rotating block is welded to the top end of the second rod body, and the hexagonal groove is communicated with the fixing groove.

[0014] Preferably, the bottom end of the protrusion is welded to the top end of the rotating block, and the protrusion is a hexagonal prism structure.

[0015] Preferably, the protrusion is detachably connected to the fixed block via an empty groove, and the top of the clamping block is welded to the bottom of the fixed block.

[0016] Preferably, the number of the card blocks and the through slots are both set to six groups, and the card blocks are in an "L"-shaped structure.

[0017] Preferably, the clamping block is detachably connected to the through slot via the clamping slot, and the fixed block is detachably connected to the rotating block via the clamping block, the clamping slot and the through slot.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model can disassemble the rod body 2 from the fixing groove through the internal thread and the external thread 2, and can disassemble the rod body 1 through the hexagonal groove on the top of the fixing groove, so that a set of screws can be split into two screws for use, thereby making the use effect of the screws better and improving the utilization rate of the screws;

[0020] 2. The utility model can engage the card block and the card slot with each other through the through slot, so as to limit and disassemble the fixed block and the rotating block. Therefore, the screws can be disassembled and assembled in two ways through the cross groove on the top of the fixed block and the convex block on the top of the rotating block, so that the use effect of the self-tapping screws is better and the practicality of the self-tapping screws is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a cross-sectional view of the utility model.

[0024] Figure 3 It is an exploded view of the utility model.

[0025] Figure 4 It is an enlarged view of A of the present utility model.

[0026] In the figure: 1, rod body 1; 101, external thread 1; 2, rod body 2; 201, fixing groove; 202, internal thread; 203, hexagonal groove; 204, external thread 2; 3, rotating block; 301, through groove; 302, clamping groove; 303, fixing block; 304, cross groove; 305, empty groove; 306, protrusion; 307, clamping block. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-4 The utility model provides a self-tapping screw embodiment with a protective effect: a self-tapping screw with a protective effect, comprising a rod body 1, a rod body 2 located inside the rod body 1, and a rotating block 3 located at the top of the rod body 2, the rod body 2 comprising: a fixing groove 201 arranged at the middle position inside the rod body 1, and an internal thread 202 is arranged on the inner side of the fixing groove 201; a hexagonal groove 203 arranged at the top end of the rod body 1, after the rod body 2 2 is removed, the rod body 1 can also be disassembled and assembled for use through the hexagonal groove 203; an external thread 204 arranged on the outer side of the rod body 2, and the disassembly and assembly effect between the rod body 2 and the fixing groove 201 is better through the external thread 204 and the internal thread 202.

[0032] Please refer to Figure 2 , Figure 3 and Figure 4 The outer side of the rod body 1 is provided with an external thread 101, and the external thread 101 is convenient for disassembling and assembling the screw. The interior of the rotating block 3 is provided with multiple groups of through grooves 301, and the bottom of the through grooves 301 is provided with a clamping groove 302. The clamping block 307 can be clamped in the inside of the clamping groove 302 through the through grooves 301, so as to limit and disassemble the fixed block 303 and the rotating block 3. A fixed block 303 is provided above the top of the rotating block 3, and a A cross groove 304 is provided with an empty groove 305 at the middle position of the bottom of the rotating block 3, and a protrusion 306 is provided at the middle position of the top of the rotating block 3. The empty groove 305 and the protrusion 306 can be engaged with each other, which is convenient for installing the fixed block 303 and the rotating block 3. A clamping block 307 is provided at the position of the through groove 301 at the bottom of the fixed block 303, and the screws can be disassembled and assembled in two ways through the cross groove 304 and the protrusion 306, so that the use effect of the screws is better.

[0033] Please refer to Figure 1 , Figure 2 and Figure 3 The second external thread 204 matches the internal thread 202, and the second external thread 204 is detachably connected to the fixing groove 201 through the internal thread 202. The second external thread 204 and the fixing groove 201 can be disassembled and assembled through the internal thread 202. The rod body 2 is detachably connected to the fixing groove 201 through the second external thread 204 and the internal thread 202. The rod body 2 and the fixing groove 201 can be disassembled and assembled through the second external thread 204 and the internal thread 202, so that the disassembly and assembly effect between the rod body 2 and the rod body 1 is better, which is convenient for splitting a set of screws into two screws for use, and the utilization rate of the self-tapping screws is improved. The top of the rotating block 3 is welded to the top of the rod body 2, and the hexagonal groove 203 is connected to the fixing groove 201. The hexagonal groove 203 can be used to disassemble and assemble the rod body 1 when the rod body 2 is removed.

[0034] Please refer to Figure 2 , Figure 3 and Figure 4 The bottom end of the protrusion 306 is welded to the top of the rotating block 3, and the protrusion 306 is a hexagonal prism structure. The rod body 2 can also be disassembled and assembled through the protrusion 306. The protrusion 306 is detachably connected to the fixed block 303 through the empty slot 305. The empty slot 305 facilitates the installation between the fixed block 303 and the rotating block 3. The top of the clamping block 307 is welded to the bottom of the fixed block 303. The number of the clamping block 307 and the through slot 301 are both set to six groups. The clamping block 307 is an "L"-shaped structure. The clamping block 307 and the clamping slot 302 are now engaged with each other, which is convenient for the installation between the fixed block 303 and the rotating block 3. The clamping block 307 is detachably connected to the through slot 301 through the clamping slot 302, and the clamping block 307 and the through slot 301 can be disassembled and assembled through the clamping slot 302. The fixed block 303 is detachably connected to the rotating block 3 through the clamping block 307, the clamping slot 302 and the through slot 301, which is convenient for limiting and disassembling the fixed block 303 and the rotating block 3, and the screws can be disassembled and assembled in two ways.

[0035] Working principle: When the utility model is used, the screws can be installed by a cross screwdriver or an electric screwdriver. After the rod body 1 is screwed in for a certain length, it is rotated in the opposite direction. The rod body 2 can be screwed out of the fixing groove 201 through the internal thread 202 and the external thread 204. The hexagonal wrench is used to clamp the inside of the hexagonal groove 203, so that the rod body 1 can be completely screwed in. Then, the rod body 2 can be screwed in for use by a cross screwdriver or an electric screwdriver. Thus, one set of screws can be disassembled and assembled into two sets for use, so that the self-tapping screw The use effect of the screw is better. The fixed block 303 can be fixed on the top of the rotating block 3 through the clamping block 307 and the clamping groove 302. The fixed block 303 and the rotating block 303 can be limited and disassembled, so that the cross groove 304 can be used for the screw. If the cross groove 304 is damaged, the fixed block 303 can be removed from the rotating block 3, and the screw can be used by engaging the hexagonal wrench with the protrusion 306. Therefore, the screw can be disassembled and used in two ways, which improves the practicality of the self-tapping screw.

[0036] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A self-tapping screw with protective effect, characterized in that: The invention comprises a rod body 1 (1), a rod body 2 (2) located inside the rod body 1 (1), and a rotating block (3) located on the top of the rod body 2 (2), wherein the rod body 2 (2) comprises: A fixing groove (201) is arranged at a middle position inside the rod body (1), and an internal thread (202) is arranged on the inner side of the fixing groove (201); A hexagonal groove (203) is arranged at the top end of the inner part of the rod body (1); External thread 2 (204) is arranged on the outside of rod body 2 (2).

2. A self-tapping screw with protective effect according to claim 1, characterized in that: The outer side of the rod body 1 (1) is provided with an external thread 1 (101).

3. The self-tapping screw with protective effect according to claim 1, characterized in that: The rotating block (3) is provided with a plurality of groups of through grooves (301) inside, a clamping groove (302) is provided at the bottom of the through groove (301), a fixed block (303) is provided above the top of the rotating block (3), a cross groove (304) is provided at the middle position of the top of the fixed block (303), an empty groove (305) is provided at the middle position of the bottom of the rotating block (3), a convex block (306) is provided at the middle position of the top of the rotating block (3), and a clamping block (307) is provided at the bottom of the fixed block (303) at the position of the through groove (301).

4. The self-tapping screw with protective effect according to claim 1, characterized in that: The second external thread (204) matches the internal thread (202), and the second external thread (204) is detachably connected to the fixing groove (201) via the internal thread (202).

5. The self-tapping screw with protective effect according to claim 1, characterized in that: The second rod body (2) is detachably connected to the fixing groove (201) via the second external thread (204) and the internal thread (202).

6. The self-tapping screw with protective effect according to claim 1, characterized in that: The top end of the rotating block (3) is welded to the top end of the second rod body (2), and the hexagonal groove (203) is connected to the fixed groove (201).

7. The self-tapping screw with protective effect according to claim 3, characterized in that: The bottom end of the protrusion (306) is welded to the top end of the rotating block (3), and the protrusion (306) is a hexagonal prism structure.

8. The self-tapping screw with protective effect according to claim 3, characterized in that: The protruding block (306) is detachably connected to the fixing block (303) via the empty slot (305), and the top of the clamping block (307) is welded to the bottom of the fixing block (303).

9. The self-tapping screw with protective effect according to claim 3, characterized in that: The number of the clamping blocks (307) and the through slots (301) are both set to six groups, and the clamping blocks (307) are in an "L"-shaped structure.

10. The self-tapping screw with protective effect according to claim 3, characterized in that: The clamping block (307) is detachably connected to the through slot (301) via the clamping slot (302), and the fixed block (303) is detachably connected to the rotating block (3) via the clamping block (307), the clamping slot (302) and the through slot (301).

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