Outer hexagon bolt with anti-loosening function

Abstract

The utility model relates to the technical field of bolts, in particular to an outer hexagon bolt with an anti-loosening function. Comprising a bolt body, the bolt body is sleeved with a first gasket, auxiliary screw holes are formed in the two sides of the first gasket, the auxiliary screw holes are in threaded connection with a second gasket through auxiliary bolts, the second gasket is located below the first gasket, clamping bins are formed in the two sides of the second gasket, the clamping bins are connected with connecting strips in a clamped mode, and the connecting strips are in threaded connection with the auxiliary bolts. The utility model aims to solve the technical problems that the outer hexagon bolt is small in contact area with a contacted piece, low in friction force and easy to loosen when being vibrated for a long time or impacted by external force.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to an external hexagon bolt with an anti-loosening function. Background Art

[0002] As a common fastener, the external hexagon bolt has a very wide range of application fields, covering all aspects from mechanical equipment, building structures to vehicle manufacturing and various industrial facilities. Its main function is to tightly fix two or more parts together through threaded connection, so as to form a firm and stable mechanical connection. Since the head of the external hexagon bolt is designed as a standard hexagon, users can conveniently use tools such as wrenches to apply torque to ensure that the bolt can be evenly tightened during installation and use, and provide a reliable tightening effect.

[0003] However, although the external hexagon bolt performs well in many application scenarios, in complex working environments, the stability of bolt connections still faces many challenges. Especially when subjected to vibration, impact or long-term loads, the threaded connection is prone to loosening. Vibration and impact will cause small displacements between the bolt and the nut, gradually weakening the fastening force of the thread and eventually leading to the loosening of the connection. This phenomenon is particularly obvious in heavy machinery and equipment, high-speed vehicles and building structures subjected to dynamic loads. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is that when the external hexagon bolt is under long-term vibration or external force impact, the contact area with the contacted part is small and the friction force is low, and it is easy to loosen.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: an external hexagon bolt with an anti-loosening function, including a bolt body, a first washer is sleeved on the bolt body, auxiliary screw holes are opened on both sides of the first washer, the auxiliary screw holes are threadedly connected with a second washer through auxiliary bolts, the second washer is located below the first washer, clamping bins are opened on both sides of the second washer, a connecting strip is clamped in the clamping bins and the connecting strip is threadedly connected with the auxiliary bolts.

[0006] As a further improvement of the utility model, a groove is fixedly connected to the inner wall of the clamping bin, a convex block is fixedly connected to one side of the connecting strip, the convex block is clamped with the groove, and a screw hole for threaded connection with the auxiliary bolt is opened on the convex block.

[0007] As a further improvement of the utility model, a hexagonal clamping block is fixedly connected to the bottom end of the first washer, and a hexagonal clamping groove for clamping the hexagonal clamping block is opened at the top end of the second washer.

[0008] As a further improvement of the present utility model, two guiding blocks are fixedly connected to the top end of the first washer, and guiding grooves for the two guiding blocks to be snap-fitted are formed on the bolt body.

[0009] As a further improvement of the present utility model, anti-slip ridges are formed at the bottom end of the second washer, and a plurality of anti-sliding blocks are fixedly connected to the bottom end of the connecting strip.

[0010] The beneficial effects of the present utility model are as follows: (1) By respectively providing the first washer and the second washer, the present utility model provides additional fastening support and structural protection between the bolt body and the connected part to ensure that the fastening effect is more stable and durable. At the same time, since connecting strips are also provided on both sides of the second washer, through the second washer and the connecting strips, the contact area between the bolt and the connected part is increased, and the force applied by the bolt can be evenly distributed on a larger contact surface, preventing local excessive pressure on the connected part when the bolt directly contacts the connected part, avoiding damage to the surface of the connected part, and further causing subsequent loosening.

[0011] (2) At the same time, anti-slip ridges and anti-sliding blocks are respectively provided at the bottom ends of the second washer and the connecting strip. By increasing the friction force and friction area on the contact surface, the bolt is effectively prevented from loosening under vibration or impact, and the fastening effect between the bolt and the connected part is enhanced. Description of the Drawings

[0012] Figure 1 is an overall schematic diagram of an external hexagonal bolt with an anti-loosening function according to the present utility model;

[0013] Figure 2 is an exploded view of an external hexagonal bolt with an anti-loosening function according to the present utility model Figure 1 ;

[0014] Figure 3 is an exploded view of an external hexagonal bolt with an anti-loosening function according to the present utility model Figure 2 ;

[0015] Figure 4 is a partial component cross-sectional view of an external hexagonal bolt with an anti-loosening function according to the present utility model.

[0016] As shown in the figure: 1. Bolt body; 2. First washer; 3. Auxiliary screw hole; 4. Auxiliary bolt; 5. Second washer; 6. Snap-fitting chamber; 7. Connecting strip; 8. Groove; 9. Convex block; 10. Hexagonal snap block; 11. Hexagonal card slot; 12. Guiding block; 13. Guiding groove; 14. Anti-slip ridge; 15. Anti-sliding block. Detailed Embodiment

[0017] In this specification, orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc., which are mentioned or may be mentioned, are defined relative to its structure, and they are relative concepts. Therefore, it is possible that they will change accordingly according to their different positions and different usage states; so, these or other orientation terms should not be construed as restrictive terms either.

[0018] As used in this specification, the singular forms "a", "the", and "said" are intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0019] In order to make the technical problems to be solved, technical solutions and beneficial effects of this application clearer and more understandable, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to explain this application and are not used to limit this application.

[0020] The present utility model provides an external hexagonal bolt with an anti-loosening function as shown in the attached Figures 1-4 As shown, it includes a bolt body 1. A first washer 2 is sleeved on the bolt body 1. Auxiliary screw holes 3 are opened on both sides of the first washer 2. The auxiliary screw holes 3 are threadedly connected with a second washer 5 through auxiliary bolts 4. The second washer 5 is located below the first washer 2. Clamping bins 6 are opened on both sides of the second washer 5. A connecting bar 7 is clamped in the clamping bins 6 and the connecting bar 7 is threadedly connected with the auxiliary bolt 4.

[0021] As Figure 4 shown, a groove 8 is fixedly connected to the inner wall of the clamping bin 6. A convex block 9 that is clamped with the groove 8 is fixedly connected to one side of the connecting bar 7. A screw hole for threaded connection of the auxiliary bolt 4 is opened in the convex block 9; by providing the convex block 9, the groove 8 and the auxiliary bolt 4, the connecting bar 7 is stably fixed on both sides of the second gasket 5. The connecting bar 7 is used to assist in supporting the bolt body 1, provide more contact surfaces, and increase the friction force, so as to avoid the bolt from generating a small displacement after being impacted, gradually weakening the fastening force of the thread and thus causing loosening.

[0022] As Figure 2 、 3 shown, a hexagonal clamping block 10 is fixedly connected to the bottom end of the first washer 2. A hexagonal clamping groove 11 for clamping the hexagonal clamping block 10 is opened at the top end of the second washer 5; through the hexagonal clamping block 10 and the hexagonal clamping groove 11, the first washer 2 and the second washer 5 are firmly connected to enhance the structural stability. Two guiding blocks 12 are fixedly connected to the top end of the first washer 2. A guiding groove 13 for clamping the two guiding blocks 12 is opened in the bolt body 1; through the guiding blocks 12 and the guiding groove 13, the bolt body 1 and the first washer 2 are reliably clamped, making the component connection reliable.

[0023] As Figure 3 shown, an anti-slip rib line 14 is provided at the bottom end of the second washer 5, and a plurality of anti-slip blocks 15 are fixedly connected to the bottom end of the connecting strip 7; by providing the anti-slip rib line 10 and the anti-slip blocks 15, the surface friction between the second washer 5 and the connecting strip 7 is increased, preventing the bolt from loosening in an environment of vibration or stress impact, and improving the durability and locking stability of the bolt.

[0024] Working principle: When the present utility model is specifically implemented, first, the first washer 2 is clamped with the bolt body 1 through the guiding block 12 and the guiding groove 13, and then the first washer 2 and the second washer 5 are clamped with each other through the hexagonal clamping block 10 and the hexagonal clamping groove 11. The convex block 9 and the groove 8 are stably clamped in sequence to make the connecting strip 7 in a reliable clamping state with the clamping cavity 6, and then through the auxiliary bolt 4, it passes through the auxiliary screw hole 3 and the screw hole on the convex block 9 to make the first washer 2, the connecting strip 7 and the clamping cavity 6 tightly connected to each other. At this time, through the second washer 5 provided with the anti-slip rib line 14 and the connecting strip 7 fixedly connected with the anti-slip blocks 15 at the bottom end, the bolt is stably in contact with the contacted part, increasing the contact area between the bolt body 1 and the contacted part, and effectively preventing slipping by enhancing the friction, avoiding loosening of the bolt due to external collision or impact.

[0025] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An external hexagonal bolt with an anti-loosening function, comprising a bolt body (1), characterized in that: The bolt body (1) is sleeved with a first washer (2). Auxiliary screw holes (3) are formed on both sides of the first washer (2). The auxiliary screw holes (3) are threadedly connected with a second washer (5) through auxiliary bolts (4). The second washer (5) is located below the first washer (2). Clamping bins (6) are formed on both sides of the second washer (5). A connecting strip (7) is clamped in the clamping bins (6) and the connecting strip (7) is threadedly connected with the auxiliary bolts (4).

2. The external hexagonal bolt with an anti-loosening function according to claim 1, characterized in that: A groove (8) is fixedly connected to the inner wall of the clamping bin (6). A convex block (9) that is clamped with the groove (8) is fixedly connected to one side of the connecting strip (7). A screw hole for the threaded connection of the auxiliary bolt (4) is formed in the convex block (9).

3. The external hexagonal bolt with an anti-loosening function according to claim 1, characterized in that: A hexagonal clamping block (10) is fixedly connected to the bottom end of the first washer (2). A hexagonal clamping groove (11) for the clamping of the hexagonal clamping block (10) is formed at the top end of the second washer (5).

4. The external hexagon bolt with an anti-loosening function according to claim 1, characterized in that: Two guiding blocks (12) are fixedly connected to the top end of the first washer (2). A guiding groove (13) for the clamping of the two guiding blocks (12) is formed in the bolt body (1).

5. A hexagon socket head bolt with an anti-loosening function according to claim 1, characterized in that: Anti-slip rib lines (14) are formed at the bottom end of the second washer (5). A plurality of anti-slip blocks (15) are fixedly connected to the bottom end of the connecting strip (7).

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