Self-tapping screw with locking structure

Abstract

The utility model discloses a self-tapping screw with a locking structure, which structurally comprises a screw main body, the screw main body consists of a screw head part, a screw rod body and a thread, the screw head part is fixed above the screw rod body, the thread surrounds and is fixedly arranged on the screw rod body, and the locking structure is arranged on the screw rod body. The screw head is further provided with a linear opening, the bottom of the screw rod body is in a tip shape, the screw body is further provided with a cavity, the cavity is formed downwards along the top of the screw head till extending into the screw rod body, and a limiting device is arranged in the cavity. A cavity is formed in the screw rod body, a limiting device is arranged in the cavity, an opening is formed in one side of the screw rod body and extends into the cavity to be communicated with the cavity, a locking device is arranged in the opening, and the limiting device is attached to the locking device. The locking part extends out of the side face of the screw rod body and is matched with a machined part to lock the screw body.

Description

Technical Field

[0001] The utility model discloses a self-tapping screw with a locking structure, belonging to the technical field of self-tapping screws. Background Art

[0002] A self-tapping screw is a screw with a drill bit, which can achieve drilling, tapping, fixing and locking at one time through a special electric tool. It has a pointed head and coarse teeth, and can be directly screwed into the material to fix and lock without drilling holes in the material in advance. When the self-tapping screw is in use, due to its own structural characteristics, it will rotate in the opposite direction when it is fixed on the surface of an object, so that it will come out of the installation hole, and then the object will be affected. Therefore, according to the above situation, a self-tapping screw with a locking structure is proposed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a self-tapping screw with a locking structure to solve the existing problems.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a self-tapping screw with a locking structure, whose structure includes a screw body, the screw body is composed of a screw head, a screw rod and a thread, the screw head is fixed above the screw rod, the thread surrounds and is fixedly arranged on the screw rod, the screw head is also provided with a slot, the bottom of the screw rod is pointed, the screw body is also provided with a cavity, the cavity is opened downward along the top of the screw head until it extends into the screw rod, a limiting device is provided in the cavity, an opening is opened on one side of the screw rod and the opening extends into the cavity and communicates with the cavity, a locking device is provided in the opening, the limiting device is fitted with the locking device, the screw body is a conventional self-tapping screw, so there is no need to elaborate on its structure.

[0005] Furthermore, the limiting device is composed of a limiting block and a limiting head, the limiting head and the limiting block are integrally connected, the limiting head extends to the outside of the screw head, and the limiting block is located in the cavity.

[0006] Furthermore, the locking device includes a locking block and a tip block, the locking block and the tip block are integrally formed, the locking block is located in the opening, and the tip block extends to the outside of the screw rod body.

[0007] Furthermore, a clamping block is fixedly connected to one side of the limit block, the clamping block is trapezoidal and has an inclined surface A and a straight surface B, the locking block is also trapezoidal and has an inclined surface C and a straight surface D, the inclined surface A matches the inclined surface C and is fittedly connected, and the straight surface B matches the straight surface D.

[0008] The beneficial effects of the utility model are:

[0009] By providing a locking device, when the self-tapping screw is screwed to the bottom, the locking device can extend from the side of the screw rod body and cooperate with the processing part to lock the screw body, thereby preventing the screw body from rotating in the opposite direction and falling off due to the characteristics of its own structure;

[0010] By providing a limiting device, not only can the locking device be locked, but also the locking device can be limited to prevent the locking device from moving and failing to lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0012] Figure 1 This is a schematic diagram of the overall structure of a self-tapping screw with a locking structure according to the utility model;

[0013] Figure 2 This is a schematic diagram of the planar structure of a self-tapping screw with a locking structure according to the utility model;

[0014] Figure 3 It is a schematic diagram of a partially enlarged structure E of a self-tapping screw with a locking structure of the utility model.

[0015] In the figure: screw body 1, screw head 2, screw rod 3, thread 4, slotted mouth 5, cavity 6, limiting device 7, opening 8, locking device 9, limiting block 701, limiting head 702, clamping block 703, locking block 901, and tip block 902. DETAILED DESCRIPTION

[0016] 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.

[0017] See also Figure 1-Figure 3The utility model provides a technical solution of a self-tapping screw with a locking structure: its structure includes a screw body 1, the screw body 1 is composed of a screw head 2, a screw rod 3 and a thread 4, the screw head 2 is fixed above the screw rod 3, the thread 4 surrounds and is fixedly arranged on the screw rod 3, the screw head 2 is also provided with a slot 5, the bottom of the screw rod 3 is pointed, the screw body 1 is also provided with a cavity 6, the cavity 6 is downwardly opened along the top of the screw head 2 until it extends into the screw rod 3, a limiting device 7 is provided in the cavity 6, an opening 8 is provided on one side of the screw rod 3, and the opening 8 extends into the cavity 6 and communicates with the cavity 6, a locking device 9 is provided in the opening 8, and the limiting device 7 is fitted with the locking device 9;

[0018] The limiting device 7 is composed of a limiting block 701 and a limiting head 702, wherein the limiting head 702 is integrally connected to the limiting block 701, the limiting head 702 extends to the outside of the screw head 2, and the limiting block 701 is located in the cavity 6. The limiting device is used to limit the locking device to ensure that the locking device can be fixedly locked;

[0019] The locking device 9 includes a locking block 901 and a tip block 902, wherein the locking block 901 and the tip block 902 are integrally formed, the locking block 901 is located in the opening 8, and the tip block 902 extends to the outside of the screw rod 3, and the locking device is used to lock the screw body to prevent the screw body from rotating in the opposite direction and falling off;

[0020] A clamping block 703 is fixedly connected to one side of the limit block 701. The clamping block 703 is trapezoidal and has an inclined surface A and a straight surface B. The locking block 901 is also trapezoidal and has an inclined surface C and a straight surface D. The inclined surface A matches the inclined surface C and is fitted, and the straight surface B matches the straight surface D.

[0021] For example, during operation, the screw body 1 is screwed into the workpiece and screwed to the bottom. When the screw body 1 needs to be locked, the limit head 702 is struck, and the limit head 702 drives the limit block 701 to move downward. At this time, the inclined surface A of the clamping block 703 cooperates with the inclined surface C of the locking block 901 to push out the tip block 902. The ejection of the tip block 902 will clamp the main workpiece from the side, and as the limit block 701 continues to fall, the straight surface B will fit with the straight surface D. At this time, the straight surface D will be clamped, so that the locking device 9 will not move as a whole, thereby ensuring the stable locking of the locking device 9.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A self-tapping screw with a locking structure, comprising a screw body (1), the screw body (1) consisting of a screw head (2), a screw shank (3) and a thread (4), the screw head (2) being fixed on the top of the screw shank (3), the thread (4) surrounding and fixedly arranged on the screw shank (3), the screw head (2) also having a slotted opening (5), the bottom of the screw shank (3) being pointed, characterized in that: The screw body (1) is also provided with a cavity (6), the cavity (6) is provided downwardly along the top of the screw head (2) until it extends into the screw rod body (3), a limiting device (7) is provided in the cavity (6), an opening (8) is provided on one side of the screw rod body (3), and the opening (8) extends into the cavity (6) and communicates with the cavity (6), a locking device (9) is provided in the opening (8), and the limiting device (7) is fitted with the locking device (9).

2. The self-tapping screw with a locking structure according to claim 1, characterized in that: The limiting device (7) is composed of a limiting block (701) and a limiting head (702), wherein the limiting head (702) and the limiting block (701) are integrally connected, the limiting head (702) extends to the outside of the screw head (2), and the limiting block (701) is located in the cavity (6).

3. The self-tapping screw with a locking structure according to claim 2, characterized in that: The locking device (9) comprises a locking block (901) and a tip block (902); the locking block (901) and the tip block (902) are integrally formed; the locking block (901) is located in the opening (8), and the tip block (902) extends to the outside of the screw rod body (3).

4. The self-tapping screw with a locking structure according to claim 3, characterized in that: A clamping block (703) is fixedly connected to one side of the limit block (701); the clamping block (703) is trapezoidal and has an inclined surface A and a straight surface B; the locking block (901) is also trapezoidal and has an inclined surface C and a straight surface D; the inclined surface A matches the inclined surface C and is fitted and connected; the straight surface B matches the straight surface D.

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