Self-locking threaded sleeve of the anti-loose type

Abstract

The utility model discloses a self -tightening lock self -tightening lock nut of anti -loose type, including the screw cap main part of being screwed in cast aluminium section, and the clamping body of cast aluminium section upper surface contact, screw cap main part is sleeve -like, and clamping body is ring -like body, and screw cap main part and clamping body are the integral type structure of inside communicating, and the bolt passes through the workpiece to be connected and is twisted with the screw cap, so that clamping body compresses cast aluminium section, thereby realizes the fastening of workpiece and cast aluminium section to be connected, and the inside wall distribution of clamping body is several drive teeth, and clamping body upper end surface is equipped with the antiskid strip, to increase the friction between clamping body and workpiece, and clamping body lower end surface is equipped with a plurality of antiskid structures, to increase the friction between clamping body and cast aluminium section, prevent loosening. The setting of this structure greatly increased the friction between screw cap and low -strength material, can effectively prevent the loosening phenomenon of screw cap, thereby significantly improved the reliability of connection.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a self-tapping locking screw sleeve with anti-loosening properties. Background Technology

[0002] In the field of mechanical assembly, self-tapping locking inserts are an important connecting element, widely used to connect components made of various materials. However, existing self-tapping locking inserts have some obvious shortcomings in practical applications.

[0003] Taking the case of locking cast aluminum products as an example, the strength of cast aluminum is much lower than that of steel. Due to this difference in material strength, it is difficult to increase the locking torque when using existing self-tapping locking inserts to lock cast aluminum products. This insufficient locking torque directly leads to a significant reduction in the anti-loosening effect of the self-tapping locking inserts. In actual use scenarios, equipment is often subjected to external vibration or impact. Under such circumstances, self-tapping locking inserts, which already have poor anti-loosening properties, are very prone to loosening. Once the insert loosens, the connection will fail, seriously affecting the normal operation of the equipment and even threatening its safety.

[0004] Therefore, it is particularly necessary to improve and optimize existing self-tapping locking inserts to address the insufficient anti-loosening effect when locking into low-strength materials such as cast aluminum. Through reasonable improvement measures, the reliability of self-tapping locking inserts in low-strength material connections can be effectively improved, thereby better meeting practical application needs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and provide an improved anti-loosening solution for self-tapping locking thread inserts. Without increasing the cost, it significantly improves the anti-loosening effect of locking thread inserts, and is especially suitable for working conditions where low-strength materials such as cast aluminum are locked in.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a self-tapping locking nut with anti-loosening properties, including a nut body screwed into a cast aluminum profile and a clamping body in contact with the upper surface of the cast aluminum profile. The nut body is sleeve-shaped, and the clamping body is annular. The nut body and the clamping body are an integral structure with internal communication. The bolt passes through the workpiece to be connected and is screwed into the nut, so that the clamping body presses the cast aluminum profile, thereby realizing the fastening of the workpiece to be connected to the cast aluminum profile. The inner wall of the clamping body is distributed with several driving teeth. The upper end face of the clamping body is provided with anti-slip strips to increase the friction between the clamping body and the workpiece. The lower end face of the clamping body is provided with multiple anti-slip structures to increase the friction between the clamping body and the cast aluminum profile and prevent loosening.

[0007] Furthermore, the main body of the threaded sleeve is provided with an external thread that can be screwed onto the cast aluminum profile, and the main body of the threaded sleeve is provided with an internal thread that can be screwed onto the bolt.

[0008] Furthermore, anti-loosening adhesive is sprayed onto the external threads.

[0009] Furthermore, the drive teeth are configured as twelve internal teeth evenly distributed on the inner wall of the clamping body to prevent the drive tool from slipping.

[0010] Furthermore, the anti-slip strips are configured as twelve strips evenly distributed around the circumference.

[0011] Furthermore, the arc-shaped contour of the anti-slip structure is tangent to the inner ring of the clamping body, and the platform is inclined, arranged in an array to present a thorn shape.

[0012] Furthermore, the anti-slip structure consists of 24 structures arranged in a circular array.

[0013] The advantages of this utility model are:

[0014] 1. This utility model adds an anti-slip structure to the lower end face of the clamping body. This structure greatly increases the friction between the threaded sleeve and the cast aluminum surface. Even when the locking torque is limited, it can effectively prevent the threaded sleeve from loosening, thereby significantly improving the reliability of the connection and ensuring stable operation of the equipment under various working conditions.

[0015] 2. The improvement of this utility model is achieved through cold heading. Cold heading is a mature and efficient processing technology that does not require additional special process steps or new processing costs in achieving anti-slip structures. This makes this utility model not only significantly improve performance but also highly economical and practical, which is conducive to its promotion and application in the market.

[0016] 3. This solution is particularly suitable for applications involving locking in low-strength materials such as cast aluminum. For connections of components made of low-strength materials, this invention effectively overcomes the shortcomings of existing self-tapping locking sleeves in terms of poor anti-loosening performance, thus improving connection reliability. Therefore, this invention has broad application prospects and can meet the needs of different industries and scenarios for connecting low-strength material components. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the lower end face of the clamping body of this utility model;

[0020] Figure 3 This is a side view of the anti-slip structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model and its bolt assembly;

[0022] In the figure: 1. Screw sleeve body, 2. Clamping body, 3. Drive teeth, 4. Anti-slip strip, 5. Workpiece I, 6. Workpiece II, 7. Cast aluminum profile, 8. Bolt, 9. Anti-slip structure. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0024] like Figure 1 The self-tapping locking nut shown includes a nut body 1 screwed into a cast aluminum profile 7 and a clamping body 2 in contact with the upper surface of the cast aluminum profile 7.

[0025] The main body 1 of the threaded sleeve is sleeve-shaped, and the clamping body 2 is annular. The main body 1 and the clamping body 2 are an integral structure with internal communication. The main body 1 has external threads that screw into the cast aluminum profile 7, and internal threads that screw into the bolt 8. Anti-loosening adhesive is sprayed on the external threads. During implementation, the bolt 8 passes through workpiece II 6 and workpiece I 5 in sequence and screws into the threaded sleeve, so that the clamping body 2 presses the cast aluminum profile 7, thereby achieving the fastening of the workpieces to be connected to the cast aluminum profile 7.

[0026] The inner wall of the clamping body 2 is provided with twelve internal drive teeth 3 to prevent the drive tool from slipping.

[0027] Twelve anti-slip strips 4 are evenly distributed around the upper end face of the clamping body 2 to increase the friction between the clamping body 2 and the workpiece. Multiple anti-slip structures 9 are provided on the lower end face of the clamping body 2 to increase the friction between the clamping body 2 and the cast aluminum profile 7 and prevent loosening.

[0028] The arc-shaped outline of the anti-slip structure 9 is tangent to the inner ring line of the clamping body 2, and the platform is inclined. They are arranged in an array in sequence, presenting a thorn shape. There are 24 anti-slip structures arranged in a circular array.

[0029] This utility model discloses a self-tapping locking insert with anti-loosening properties. In practical applications, the insert body 1 is first precisely screwed into the cast aluminum profile 7 using a suitable driving tool. During the screwing process, it is necessary to ensure that the external thread on the outside of the insert body 1 accurately engages with the internal threaded hole of the cast aluminum profile 7, and that it is screwed in completely, so that the lower end face of the clamping body 2 is tightly fitted with the upper surface of the cast aluminum profile 7.

[0030] After screwing in the main body 1 of the self-tapping locking screw insert, place workpiece I5 and workpiece II6 on top of the self-tapping locking screw insert in sequence. Pay attention to the accuracy of the workpiece placement to ensure that subsequent bolts can pass through smoothly.

[0031] Next, bolt 8 is passed through workpiece II6 and workpiece I5 in sequence, and the threaded end of bolt 8 is screwed into the internal thread inside the sleeve body 1. During the screwing process, a driving tool is used to tighten bolt 8. As bolt 8 is tightened, bolt 8 will apply downward pressure to workpiece II6, and then the pressure will be transmitted to clamping body 2 through workpiece II6, so that clamping body 2 will further press the cast aluminum profile 7.

[0032] Throughout the tightening process, the drive teeth 3 distributed on the inner wall of the clamping body 2 can closely engage with the drive tool, preventing slippage and ensuring smooth tightening. Simultaneously, the anti-slip strip 4 on the upper surface of the clamping body 2 increases friction between the clamping body 2 and the workpiece, while the anti-slip structure 9 on the lower surface of the clamping body 2 increases friction between the clamping body 2 and the cast aluminum profile 7. This effectively prevents loosening of the entire connection structure during use, thus achieving a firm and secure connection between the workpiece and the cast aluminum profile 7, ensuring stable operation of the equipment.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-tapping locking nut with anti-loosening properties, characterized in that: The device includes a threaded sleeve body (1) screwed into the cast aluminum profile (7) and a clamping body (2) in contact with the upper surface of the cast aluminum profile (7). The threaded sleeve body (1) is sleeve-shaped, and the clamping body (2) is annular. The threaded sleeve body (1) and the clamping body (2) are an integral structure with internal communication. The bolt (8) passes through the workpiece II (6) and workpiece I (5) in sequence and is screwed into the threaded sleeve, so that the clamping body (2) presses the cast aluminum profile (7) to achieve the fastening of the workpiece to be connected and the cast aluminum profile (7). The inner wall of the clamping body (2) is distributed with several driving teeth (3). The upper end face of the clamping body (2) is provided with anti-slip strips (4) to increase the friction between the clamping body (2) and the workpiece. The lower end face of the clamping body (2) is provided with multiple anti-slip structures (9) to increase the friction between the clamping body (2) and the cast aluminum profile (7) and prevent loosening.

2. The anti-loosening self-tapping locking nut according to claim 1, characterized in that: The main body (1) of the threaded sleeve is provided with an external thread that is screwed into the cast aluminum profile (7), and the main body (1) of the threaded sleeve is provided with an internal thread that is screwed into the bolt (8).

3. The anti-loosening self-tapping locking nut according to claim 2, characterized in that: Anti-loosening adhesive is sprayed onto the external threads.

4. The anti-loosening self-tapping locking nut according to claim 1, characterized in that: The drive teeth (3) are set as twelve internal teeth evenly distributed on the inner wall of the clamping body (2) to prevent the drive tool from slipping.

5. The anti-loosening self-tapping locking nut according to claim 1, characterized in that: The anti-slip strip (4) is set as twelve strips evenly distributed around the circumference.

6. The anti-loosening self-tapping locking nut according to claim 1, characterized in that: The arc-shaped outline of the anti-slip structure (9) is tangent to the inner ring of the clamping body (2), and the platform is inclined. They are arranged in an array to present a thorn shape.

7. A self-tapping locking nut with anti-loosening properties according to claim 6, characterized in that: The anti-slip structure (9) consists of 24 units arranged in a circular array.

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