Anti-loosening inner hexagon screw

Abstract

The utility model discloses an anti-loosening inner hexagon screw which comprises a screw head portion and a screw rod portion, a first thread is arranged on the screw rod portion, a second thread is arranged at the position, close to the screw head portion, of the screw rod portion, the second thread and the first thread are reverse threads, an anti-loosening block is arranged on the screw rod portion, and the anti-loosening block is arranged on the screw rod portion. The anti-loosening block is connected with the screw rod part through a second thread, a plurality of anti-loosening nails are arranged on the anti-loosening block, the axes of the anti-loosening nails are parallel to the axis of the screw, the anti-loosening nails are in threaded connection with the anti-loosening block, the tip ends of the anti-loosening nails can penetrate through the anti-loosening block, multiple anti-loosening is achieved, meanwhile, the anti-loosening structure is connected in a staged mode, the screw does not need to be completely rotated, and the anti-loosening effect is good. And more labor is saved.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, and more specifically relates to an anti-loosening hexagonal socket screw. Background Technology

[0002] Preventing screw loosening is quite important. For example, the prior art disclosed in CN213176420U is a screw assembly that prevents loosening. It has an anti-slip sleeve on the screw. The friction between the anti-slip sleeve and the screw and the surface of the object improves the screw's anti-loosening effect. However, the pressing friction of the anti-slip sleeve needs to be achieved by rotating the screw in one go. This undoubtedly increases the resistance to screwing in the screw. Achieving the anti-loosening effect requires a lot of force and is labor-intensive. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an anti-loosening hexagonal socket screw that connects the anti-loosening structure in stages while providing multiple anti-loosening measures, eliminating the need to rely entirely on rotating the screw and saving more effort.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening hexagon socket screw, comprising a screw head and a screw shank, wherein a first thread is provided on the screw shank, and a second thread is provided on the screw shank near the screw head, and the second thread and the first thread are opposite to each other; an anti-loosening block is provided on the screw shank, the anti-loosening block is connected to the screw shank via the second thread, and a plurality of anti-loosening pins are provided on the anti-loosening block, wherein the axis of the anti-loosening pins is parallel to the axis of the screw, the anti-loosening pins are threadedly connected to the anti-loosening block, and the tips of the anti-loosening pins can pass through the anti-loosening block.

[0005] Furthermore, a first friction layer is provided on the contact surface between the anti-loosening block and the screw head.

[0006] Furthermore, a second friction layer is provided on the bottom surface of the anti-loosening block.

[0007] Furthermore, the anti-loosening block is provided with a groove corresponding to the screw head.

[0008] Furthermore, the anti-loosening block is an external hexagonal block.

[0009] Compared with the prior art, the advantages of this utility model are: first connect the anti-loosening block and the screw, then connect the screw until the anti-loosening block is in close contact with the surface of the object being connected, then tighten the anti-loosening block, and finally rotate the anti-loosening nail so that its tip penetrates the surface of the object being connected, thus achieving multiple anti-loosening effects. Moreover, the anti-loosening structure is connected in stages, without having to rely entirely on rotating the screw, which saves more effort. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the anti-loosening hexagon socket screw of this utility model;

[0011] Figure 2 This is a top-view schematic diagram of the anti-loosening hexagonal socket screw of this utility model.

[0012] Reference numerals: 1. Screw head; 2. Screw portion; 3. First thread; 4. Second thread; 5. Anti-loosening block; 6. Anti-loosening nail; 7. First friction layer; 8. Second friction layer; 9. Groove. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0015] Reference Figure 1 and Figure 2 The present invention will be further described below.

[0016] An anti-loosening hexagon socket screw includes a screw head 1 and a screw shank 2. The screw shank 2 is provided with a first thread 3 and a second thread 4 near the screw head 1, wherein the second thread 4 and the first thread 3 are opposite threads. An anti-loosening block 5 is provided on the screw shank 2 and is connected to the screw shank 2 through the second thread 4. A plurality of anti-loosening pins 6 are provided on the anti-loosening block 5. The axis of the anti-loosening pins 6 is parallel to the axis of the screw. The anti-loosening pins 6 are threadedly connected to the anti-loosening block 5, and the tips of the anti-loosening pins 6 can pass through the anti-loosening block 5.

[0017] Specifically, the outer diameter of the second thread 4 is larger than the outer diameter of the first thread 3.

[0018] Specifically, if the first thread 3 on the screw is a conventional right-hand thread, then the second thread 4 is a left-hand thread.

[0019] like Figure 2 As shown, specifically, several anti-loosening screws 6 are arranged circumferentially around the screw head 1.

[0020] In this embodiment, at least three anti-loosening nails 6 are preferably used.

[0021] In this example, preferably, the contact surface between the anti-loosening block 5 and the screw head 1 is provided with a first friction layer 7.

[0022] In this example, preferably, the bottom surface of the anti-loosening block 5 is provided with a second friction layer 8.

[0023] Specifically, friction ridges, bumps, etc. can be provided on the first friction layer 7 and the second friction layer 8 to increase roughness.

[0024] like Figure 1 As shown in this example, preferably, the anti-loosening block 5 is provided with a groove 9 corresponding to the screw head 1.

[0025] like Figure 2 As shown in the example, the preferred embodiment of this example is that the anti-loosening block 5 is an external hexagonal block, which facilitates the rotation of the anti-loosening block 5.

[0026] like Figure 1 and Figure 2 As shown, before connecting the screw, the anti-loosening block 5 is first passed through the first thread 3 of the screw part 2, and then connected with the second thread 4 until the first friction layer 7 on the anti-loosening block 5 is in close contact with the bottom surface of the screw head 1. Then, the screw is connected by the internal hexagon on the screw until the second friction layer 8 on the bottom surface of the anti-loosening block 5 is in close contact with the surface of the object being connected. Then, the anti-loosening block 5 is tightened. The thread friction between the connecting screw and the object being connected is greater through the second thread 4. Finally, the anti-loosening nail 6 is rotated so that its tip penetrates the surface of the object being connected, thereby achieving the anti-loosening of the screw. The anti-loosening structure is connected in stages without having to rely entirely on rotating the screw, which is more labor-saving.

[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A locking hexagon socket head cap screw, comprising a screw head and a shank, wherein the shank has a first thread, characterized in that: A second thread is provided on the screw section near the screw head, and the second thread is a reverse thread to the first thread. An anti-loosening block is provided on the screw section, and the anti-loosening block is connected to the screw section through the second thread. A plurality of anti-loosening nails are provided on the anti-loosening block, the axis of the anti-loosening nails is parallel to the axis of the screw, the anti-loosening nails are threadedly connected to the anti-loosening block, and the tip of the anti-loosening nail can pass through the anti-loosening block.

2. The anti-loosening hexagon socket screw according to claim 1, characterized in that: The contact surface between the anti-loosening block and the screw head is provided with a first friction layer.

3. The anti-loosening hexagon socket screw according to claim 1, characterized in that: The bottom surface of the anti-loosening block is provided with a second friction layer.

4. The anti-loosening hexagon socket screw according to claim 1, characterized in that: The anti-loosening block is provided with a groove corresponding to the screw head.

5. The anti-loosening hexagon socket screw according to claim 1, characterized in that: The anti-loosening block is an external hexagonal block.

Images