Cross-shaped self-tapping screw with anti-thread-slipping structure

Abstract

The utility model discloses a cross-shaped self-tapping screw with an anti-skidding tooth structure, which comprises a screw cap, a screw body is arranged on the bottom wall of the screw cap, the screw body and the screw cap are integrally formed, anti-skidding tooth threads are arranged on the screw body, a cross-shaped groove is arranged on the top wall of the screw cap, a locking mechanism is arranged on the screw cap, and the anti-skidding tooth threads are arranged in the cross-shaped groove. The locking mechanism comprises a locking gasket, the locking gasket is arranged on the screw body in a sleeving mode through a formed through hole, a plurality of pointed cones are fixedly welded to the side wall, away from the nut, of the locking gasket, a fixing ring is arranged on the side, away from the nut, of the locking gasket, and the fixing ring is fixedly welded to the screw body. According to the self-tapping screw, the contact friction force between the locking gasket arranged on the self-tapping screw and a connecting piece can be improved through the multiple pointed cones, the locking gasket cannot rotate, then the nut cannot rotate reversely, and the problem that the self-tapping screw is prone to reversely rotating out of a workpiece due to shaking generated by the outside world, and consequently looseness is caused is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of self - tapping screws, in particular to a cross self - tapping screw with an anti - slip tooth structure. Background Technique

[0002] Self - tapping screws, also known as quick - thread screws, are fast - mounting fasteners made of steel and passivated by surface galvanizing. Self - tapping screws are mostly used for the connection between thin metal plates (such as steel plates, saw plates, etc.). When connecting, first make a threaded bottom hole in the workpiece to be connected, and then screw the self - tapping screw into the threaded bottom hole of the workpiece. In the prior art, when using self - tapping screws, most of them are composed of a nut, a screw rod and a drill bit to connect the workpiece object. Although the spiral connection method greatly reduces the possibility of the self - tapping screw falling off the workpiece, such self - tapping screws are very easy to rotate out reversely from the workpiece due to the external vibration, increasing the frequency of subsequent maintenance. In view of this, we propose a cross self - tapping screw with an anti - slip tooth structure to solve the above - mentioned problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide a cross self - tapping screw with an anti - slip tooth structure to solve the problems mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A cross self - tapping screw with an anti - slip tooth structure, comprising:

[0005] A nut, on the bottom wall of which a screw body is provided. The screw body is integrally formed with the nut. An anti - slip tooth thread is provided on the screw body. A cross - shaped groove is opened on the top wall of the nut. A locking mechanism is provided on the nut. The locking mechanism includes a locking gasket. The locking gasket is sleeved on the screw body through a through - hole opened thereon. A plurality of pointed cones are fixedly welded on the side wall of the locking gasket away from the nut. A fixing ring is provided on the side of the locking gasket away from the nut. The fixing ring is fixedly welded on the screw body.

[0006] Preferably, a threaded hole is opened on the top wall of the nut. The threaded hole penetrates the nut. A locking screw is threadedly connected in the threaded hole.

[0007] Preferably, the bottom end of the locking screw is in a pointed - cone shape.

[0008] Preferably, the locking gasket is made of plastic.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] When the utility model is in use, after the self-tapping screw is screwed into the connecting piece, the nut can squeeze the locking gasket to press against the surface of the connecting piece. At this time, multiple pointed cones can be inserted into the surface of the connecting piece. Then, by screwing the locking screw, the locking screw can move inward in the threaded hole. When the locking screw is completely screwed into the threaded hole, the pointed cone head of the locking screw can be inserted into the locking gasket, so that the nut and the locking gasket are limited and fixed. The locking gasket can improve the contact friction force with the connecting piece through the multiple pointed cones arranged thereon and cannot rotate, so that the nut will not reverse, solving the problem that the self-tapping screw is easily reversed and rotated out of the workpiece due to the shaking generated by the outside world, resulting in loosening. Brief Description of the Drawings

[0011] Figure 1 is a three-dimensional structure diagram of a cross self-tapping screw with an anti-slip tooth structure proposed by the present utility model;

[0012] Figure 2 is a three-dimensional structure diagram of the connection between the locking gasket and the screw body in a cross self-tapping screw with an anti-slip tooth structure proposed by the present utility model;

[0013] Figure 3 is a three-dimensional structure diagram of the nut in a cross self-tapping screw with an anti-slip tooth structure proposed by the present utility model;

[0014] Figure 4 is a three-dimensional structure diagram of the locking screw in a cross self-tapping screw with an anti-slip tooth structure proposed by the present utility model.

[0015] In the figure: 1, nut; 2, screw body; 3, anti-slip tooth thread; 4, cross groove; 5, locking gasket; 6, pointed cone; 7, fixing ring; 8, threaded hole; 9, locking screw. Detailed Description of the Preferred Embodiments

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-4 , the present utility model provides a technical solution: a cross self-tapping screw with an anti-slip tooth structure, including:

[0018] Nut 1, on the bottom wall of which a screw body 2 is provided. The screw body 2 is integrally formed with the nut 1. An anti-slip thread 3 is provided on the screw body 2. A cross slot 4 is opened on the top wall of the nut 1. A locking mechanism is provided on the nut 1. The locking mechanism includes a locking gasket 5. The locking gasket 5 is sleeved on the screw body 2 through a through hole opened. A plurality of pointed cones 6 are fixedly welded on a side wall of the locking gasket 5 away from the nut 1. A fixing ring 7 is provided on a side of the locking gasket 5 away from the nut 1. The fixing ring 7 is fixedly welded on the screw body 2.

[0019] A threaded hole 8 is opened on the top wall of the nut 1. The threaded hole 8 penetrates through the nut 1. A locking screw 9 is threadedly connected in the threaded hole 8. The locking screw 9 is used to limit and fix the locking gasket 5.

[0020] The bottom end of the locking screw 9 is provided in a pointed cone shape. The pointed cone shape at the bottom end enables the locking screw 9 to be inserted into the locking gasket 5 when being tightened, facilitating the limitation of the locking gasket 5.

[0021] The locking gasket 5 is made of plastic material. The locking gasket 5 made of plastic material facilitates the insertion of the locking screw 9.

[0022] Working principle: When in use, after the self-tapping screw is screwed into the connecting piece, the nut 1 can squeeze the locking gasket 5 to press against the surface of the connecting piece. At this time, a plurality of pointed cones 6 can be inserted into the surface of the connecting piece. Then, by screwing the locking screw 9, the locking screw 9 can move inward in the threaded hole 8. When the locking screw 9 is completely screwed into the threaded hole 8, the pointed cone head of the locking screw 9 can be inserted into the locking gasket 5, so that the nut 1 and the locking gasket 5 are limited and fixed. The locking gasket 5 can improve the contact friction force with the connecting piece through the plurality of pointed cones 6 provided, and cannot rotate, thereby preventing the nut 1 from reversing, and solving the problem that the self-tapping screw is easily reversed and rotated out of the workpiece due to the shaking generated by the outside, resulting in loosening.

[0023] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cross self-tapping screw with an anti-slip tooth structure, characterized in that, Comprising: A nut (1), on the bottom wall of the nut (1) there is provided a screw body (2), the screw body (2) is integrally formed with the nut (1), on the screw body (2) there is provided an anti-slip thread (3), on the top wall of the nut (1) there is provided a cross slot (4), on the nut (1) there is provided a locking mechanism, the locking mechanism includes a locking gasket (5), the locking gasket (5) is sleeved on the screw body (2) through a through hole provided, on the side wall of the locking gasket (5) away from the nut (1) there are fixedly welded a plurality of pointed cones (6), on the side of the locking gasket (5) away from the nut (1) there is provided a fixing ring (7), the fixing ring (7) is fixedly welded on the screw body (2).

2. The cross self-tapping screw with an anti-slip tooth structure according to claim 1, wherein: On the top wall of the nut (1) there is provided a threaded hole (8), the threaded hole (8) penetrates through the nut (1), and in the threaded hole (8) there is a locking screw (9) threadedly connected.

3. The cross self-tapping screw with an anti-slip tooth structure according to claim 2, characterized in that: The bottom end of the locking screw (9) is provided in a pointed cone shape.

4. A cross self-tapping screw with an anti-slip tooth structure according to claim 1, characterized in that: The locking gasket (5) is made of plastic material.

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