High-strength anti-loosening bolt

Abstract

The utility model relates to the technical field of bolts, in particular to a high-strength anti-loosening bolt which comprises a bolt head, a screw rod is vertically installed in the middle of the lower end of the bolt head, and a spiral notch is formed in the outer side of the screw rod. A plurality of first arc-shaped plates which are obliquely arranged are arranged along the side edge of the top of the screw rod, the tops of the first arc-shaped plates are fixed to the screw head, second arc-shaped plates corresponding to the first arc-shaped plates are arranged below the first arc-shaped plates, and the tops of the second arc-shaped plates are also fixed to the screw head. The bottom of the second arc-shaped plate is fixed with the bottom of the first arc-shaped plate through an arc-shaped first connecting plate; and a plurality of third arc-shaped plates which are arranged at intervals are arranged below the screw head. When the high-strength anti-loosening bolt is used, the arc-shaped plates are staggered and arranged in a step shape, and the elasticity of the arc-shaped plates and the connecting plates provides larger outward supporting acting force for a bolt head arranged on a workpiece, so that the bolt can be opened, and the anti-loosening capacity of the bolt is improved.

Description

[0001] Technical field.

[0002] This utility model relates to the field of bolt technology, and in particular to a high-strength anti-loosening bolt.

[0003] Background technology.

[0004] A bolt is a mechanical part, a cylindrical threaded fastener used with a nut. It consists of a head and a shank (a cylinder with external threads), and is used to fasten two parts with through holes. This type of connection is called a bolted connection. Since the two parts can be separated by unscrewing the nut, a bolted connection is a detachable connection.

[0005] When using bolts to fasten workpieces, since the bolts are already on the workpiece by rotation, if the fixed workpiece is subjected to vibration for a long time, the bolts will also vibrate. Prolonged vibration can cause the bolts to rotate, or even loosen and fall off, posing a significant safety hazard to the workpiece. Therefore, we propose a high-strength anti-loosening bolt to solve the above problems.

[0006] Utility model content.

[0007] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a high-strength anti-loosening bolt.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a high-strength anti-loosening bolt is designed, including a screw head, and a screw rod with a spiral groove on the outer side is vertically installed at the lower middle part of the screw head;

[0009] Several inclined first arc-shaped plates are provided along the top side of the screw. The top of the first arc-shaped plate is fixed to the screw head. Below the first arc-shaped plate, there is a corresponding second arc-shaped plate. The top of the second arc-shaped plate is also fixed to the screw head. The bottom of the second arc-shaped plate is fixed to the bottom of the first arc-shaped plate through an arc-shaped first connecting plate.

[0010] Several third arc-shaped plates are arranged at intervals below the screw head, and adjacent third arc-shaped plates are connected by elastic connectors. The third arc-shaped plate, the second arc-shaped plate, the first arc-shaped plate, and the first connecting plate are all elastic spring sheets.

[0011] Preferably, the cross-section of the slot on the screw is polygonal.

[0012] Preferably, the multiple third arc-shaped plates are arranged in a staggered, stepped manner.

[0013] Preferably, the connector includes an arc-shaped second connecting plate and an arc-shaped third connecting plate, which are respectively connected to the two ends of the third arc-shaped plate. The inner side of the second connecting plate and the third connecting plate are both arranged facing the third arc-shaped plate to which they are connected. The second connecting plate and the third connecting plate located between two adjacent third arc-shaped plates are connected to each other. The second connecting plate and the third connecting plate are both elastic springs.

[0014] Preferably, an annular limiting plate is installed along the bottom edge of the screw head, and the first arc plate and the second arc plate are both placed inside the limiting plate.

[0015] Preferably, a cross groove is provided in the middle of the upper end of the screw head.

[0016] Preferably, the edges of the screw head are provided with arc-shaped cut surfaces.

[0017] The design scheme proposed in this utility model has the following beneficial effects in application:

[0018] This high-strength anti-loosening bolt uses a stepped arrangement of arc-shaped plates. Combined with the elasticity of the arc-shaped plates and connecting plates, the bolt, after being continuously screwed onto the workpiece, can cause extrusion deformation of multiple sets of arc-shaped plates and connecting plates. This provides a greater outward supporting force to the bolt head placed on the workpiece, thereby opening up the bolt and improving its anti-loosening ability.

[0019] The high-strength anti-loosening bolt connects the first arc plate to the second arc plate via the first connecting plate, and the second and third connecting plates connect the two adjacent third arc plates. This causes them to bulge partially after being compressed. These bulges, when misaligned, limit the rotation of the bolt, thereby increasing the force required for the bolt to rotate and further improving the bolt's anti-loosening ability.

[0020] Attached image description.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the bottom structure of the screw head of this utility model;

[0024] Figure 4 This is a schematic diagram of the third arc-shaped plate structure of this utility model.

[0025] In the diagram: 1. Screw head; 2. Screw rod; 3. First arc plate; 4. Second arc plate; 5. First connecting plate; 6. Limiting plate; 7. Third arc plate; 8. Second connecting plate; 9. Third connecting plate; 10. Cross groove; 11. Arc-shaped cut surface.

[0026] Detailed implementation method.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figures 1-4 A high-strength anti-loosening bolt includes a screw head 1, with a cross groove 10 formed in the middle of the upper end of the screw head 1, for using a screwdriver to rotate the bolt and install it.

[0029] Arc-shaped cut surfaces 11 are provided on the edges of the screw head 1 to ensure the smoothness of the surface of the screw head 1 and to prevent the edges of the screw head 1 from being too sharp and causing injury to the user.

[0030] A screw 2 with a spiral groove on the outer side is vertically installed at the lower middle part of the screw head 1. The cross-section of the groove on the screw 2 is polygonal, which increases the contact surface between the groove of the screw 2 and the workpiece to be installed, provides more contact surface for the tightening of the bolt, and improves the fixing effect of the screw 2.

[0031] Several inclined first arc-shaped plates 3 are provided along the top side of the screw 2. The top of the first arc-shaped plate 3 is fixed to the screw head 1. Below the first arc-shaped plate 3, there is a corresponding second arc-shaped plate 4. The top of the second arc-shaped plate 4 is also fixed to the screw head 1. The bottom of the second arc-shaped plate 4 is fixed to the bottom of the first arc-shaped plate 3 through an arc-shaped first connecting plate 5. The second arc-shaped plate 4, the first arc-shaped plate 3, and the first connecting plate 5 are all elastic spring sheets. As the screw 2 extends into the workpiece, the screw head 1 will press on the workpiece. As the screw head 1 continues to press down, the first connecting plate 5 will be compressed and deformed to provide an upward thrust to the screw head 1, thereby providing tension to the screw 2 in the workpiece and allowing the screw 2 to be firmly fixed on the workpiece.

[0032] Below the screw head 1, several third arc-shaped plates 7 are arranged at intervals, staggered in a stepped manner. Adjacent third arc-shaped plates 7 are connected by elastic connectors. Each third arc-shaped plate 7 is a spring-loaded piece. When screwing the screw 2 into the workpiece, the third arc-shaped plate 7 can be removed and placed on the screw 2 before screwing it in. At this time, the third arc-shaped plate 7 will be positioned between the screw head 1 and the workpiece. The connectors include an arc-shaped second connecting plate 8 and an arc-shaped third connecting plate 9, which are respectively connected to... The two ends of the third arc plate 7, the inner side of the second connecting plate 8 and the third connecting plate 9 are both set towards the third arc plate 7 to which they are connected, and the second connecting plate 8 and the third connecting plate 9 located between two adjacent third arc plates 7 are connected to each other. The second connecting plate 8 and the third connecting plate 9 are both elastic spring sheets. Therefore, after the screw 2 is screwed into the workpiece, the second connecting plate 8 and the third connecting plate 9 between the third arc plates 7 will be compressed and will provide thrust to the screw head 1 again, which can further increase the tensioning effect of the screw 2 in the workpiece and improve the bolt's anti-loosening ability on the workpiece.

[0033] Specifically, as the screw head 1 rotates and is screwed into the workpiece by the screw rod 2, the continuous compression of the screw head 1 on the arc plate will cause bulges to form at the first connecting plate 5 and the second connecting plate 8. The staggered arrangement between the two sets of bulges can limit the rotation of the screw head 1, thereby reducing the influence of vibration and other factors on the bolt and further improving the bolt's resistance to loosening.

[0034] In order to ensure the stability of the third arc plate 7 under the screw head 1, an annular limiting plate 6 is installed along the bottom edge of the screw head 1. The first arc plate 3 and the second arc plate 4 are both placed inside the limiting plate 6 to limit the third arc plate 7, so that the third arc plate 7 can make full contact with the second arc plate 4, thereby ensuring the interaction effect of the connecting plates after being compressed.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-strength anti-loosening bolt, characterized in that: Includes a screw head (1), and a screw rod (2) with a spiral groove on the outside is vertically installed at the middle of the lower end of the screw head (1). Several inclined first arc plates (3) are provided along the top side of the screw (2). The top of the first arc plate (3) is fixed to the screw head (1). Below the first arc plate (3) is a corresponding second arc plate (4). The top of the second arc plate (4) is also fixed to the screw head (1). The bottom of the second arc plate (4) is fixed to the bottom of the first arc plate (3) through an arc-shaped first connecting plate (5). Several third arc plates (7) are arranged at intervals below the screw head (1), and there are elastic connecting pieces between two adjacent third arc plates (7). The third arc plate (7), the second arc plate (4), the first arc plate (3), and the first connecting plate (5) are all elastic spring pieces.

2. The high-strength anti-loosening bolt according to claim 1, characterized in that: The cross-section of the slot on the screw (2) is polygonal.

3. The high-strength anti-loosening bolt according to claim 1, characterized in that: Multiple third arc plates (7) are staggered and arranged in a stepped manner.

4. A high-strength anti-loosening bolt according to claim 1, characterized in that: The connector includes an arc-shaped second connecting plate (8) and an arc-shaped third connecting plate (9). The second connecting plate (8) and the third connecting plate (9) are respectively connected to the two ends of the third arc plate (7). The inner side of the second connecting plate (8) and the third connecting plate (9) are both set towards the third arc plate (7) to which they are connected. The second connecting plate (8) and the third connecting plate (9) located between two adjacent third arc plates (7) are connected to each other. The second connecting plate (8) and the third connecting plate (9) are both elastic springs.

5. A high-strength anti-loosening bolt according to claim 1, characterized in that: An annular limiting plate (6) is installed along the bottom edge of the screw head (1), and the first arc plate (3) and the second arc plate (4) are both placed inside the limiting plate (6).

6. A high-strength anti-loosening bolt according to claim 1, characterized in that: A cross groove (10) is provided in the middle of the upper end of the screw head (1).

7. A high-strength anti-loosening bolt according to claim 1, characterized in that: Arc-shaped cut surfaces (11) are provided on the edges of the screw head (1).

Images