Anti-fatigue fastener

Abstract

The utility model provides an anti-fatigue fastener, and relates to the technical field of fasteners, the anti-fatigue fastener comprises a bolt head, one side of the bolt head is fixedly connected with a screw rod, the outer surface of the screw rod is sleeved with a fixing ring, the fixing ring is provided with a limiting groove, the face, away from the screw rod, of the bolt head is provided with a connecting disc, and the connecting disc is fixedly connected with a connecting rod; a limiting rod is hinged to the connecting rod and connected with the inner wall of the limiting groove in an inserted mode so as to limit axial movement of the bolt head and the fixing ring. The fixing ring is arranged, the fixing ring is connected with a to-be-fixed part in a glue or welding mode, the bolt head is provided with the connecting disc, the connecting rod and the limiting rod, the bolt head can be limited through inserting connection of the limiting rod and the limiting groove, and when the bolt head and the screw are subjected to vibration or external force, the bolt head can be fixed through the limiting rod. And additional constraint is provided to limit the axial rotation of the screw rod, so that the loosening risk caused by fatigue is remarkably reduced, and the stability and reliability of the whole structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-fatigue fastener. Background Art

[0002] In the aviation industry, fasteners are key components that connect various aircraft parts, and their performance is directly related to the safety and reliability of the aircraft. With the continuous development of aviation technology, the requirements for fasteners are becoming increasingly stringent, especially in the long-term operation process under high stress, high vibration and complex environmental conditions. The problem of fastener fatigue loosening has become a technical problem that needs to be solved urgently.

[0003] Traditional fasteners, such as ordinary bolts, often become loose after long-term use due to factors such as vibration, temperature changes and material creep, which not only reduces the fastening force of the connection, but also may cause relative displacement between components and even lead to structural failure, posing a serious threat to flight safety. Therefore, we have made improvements to this and proposed an anti-fatigue fastener. Summary of the invention

[0004] The utility model aims to solve the problem that the existing traditional fasteners often become loose after being used for a long time.

[0005] In order to achieve the above-mentioned purpose of the invention, the utility model provides an anti-fatigue fastener to improve the above-mentioned problem.

[0006] The specific application is as follows:

[0007] A fatigue-resistant fastener comprises a bolt head, one side of the bolt head is fixedly connected to a screw rod, the outer surface of the screw rod is sleeved with a fixing ring, a limiting groove is provided on the fixing ring, a connecting plate is provided on the side of the bolt head away from the screw rod, a connecting rod is fixedly connected to the connecting plate, a limiting rod is hinged on the connecting rod, and the limiting rod is plugged into the inner wall of the limiting groove to limit the axial movement of the bolt head and the fixing ring.

[0008] As a preferred technical solution of the present application, the fixing ring is used to connect with the component to be fixed by glue or welding.

[0009] As a preferred technical solution of the present application, the connecting plate and the bolt head are fixedly connected.

[0010] As a preferred technical solution of the present application, a first magnet is fixedly installed on the inner wall of the limiting groove, a second magnet is arranged on the limiting rod, and the first magnet and the second magnet are attracted to each other.

[0011] As a preferred technical solution of the present application, a chamber is provided on the side of the bolt head away from the screw rod, the connecting plate is installed in the chamber via a bearing, and a ratchet is fixedly connected to a side of the connecting plate close to the screw rod.

[0012] As a preferred technical solution of the present application, a connecting shaft is fixedly installed on the inner wall of the chamber, a pawl is provided on the outer surface of the connecting shaft through a bearing sleeve, and one end of the pawl is engaged with the ratchet, and a first spring is fixedly connected between the pawl and the inner wall of the chamber.

[0013] As a preferred technical solution of the present application, a groove is provided on the outer surface of the bolt head, a first connecting plate is inserted into the groove, and both ends of the first connecting plate extend out of the groove.

[0014] As a preferred technical solution of the present application, the first connecting plate corresponds to the outer surface of the limiting rod.

[0015] As a preferred technical solution of the present application, a side of the first connecting plate close to the ratchet is fixedly connected to a limiting plate, and an end of the limiting plate away from the first connecting plate penetrates into the cavity and contacts a side of the pawl away from the ratchet.

[0016] As a preferred technical solution of the present application, a side of the first connecting plate close to the ratchet is also fixedly connected to a second connecting plate, an end of the second connecting plate away from the first connecting plate penetrates into the chamber and is fixedly connected to a second spring, and an end of the second spring away from the second connecting plate is fixedly connected to the inner wall of the chamber.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the scheme of this application:

[0019] In order to solve the problem that fasteners in the prior art often become loose after long-term use, the present application provides a fixing ring, which is connected to the component to be fixed by glue or welding, and a connecting plate, a connecting rod and a limit rod are provided on the bolt head. The connection between the limit rod and the limit groove can limit the bolt head, and can provide additional constraints when the bolt head and the screw are subjected to vibration or external force, thereby limiting the axial rotation of the screw, thereby significantly reducing the risk of loosening due to fatigue and improving the stability and reliability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of the anti-fatigue fastener provided for this application;

[0021] Figure 2 A schematic diagram of the rear view structure of the anti-fatigue fastener provided in this application;

[0022] Figure 3 A schematic diagram of the structure of the interior of the chamber of the anti-fatigue fastener provided in the present application;

[0023] Figure 4 A schematic diagram of the structure of the groove of the anti-fatigue fastener provided in the present application.

[0024] Indicated in the figure:

[0025] 1. Bolt head; 101. Screw; 2. Fixing ring; 201. Limiting groove; 3. Connecting plate; 4. Connecting rod; 5. Limiting rod; 6. First magnet; 7. Second magnet; 8. Chamber; 9. Ratchet; 10. Connecting shaft; 11. Ratchet; 12. First spring; 13. First connecting plate; 14. Second connecting plate; 15. Limiting plate; 16. Second spring. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] As described in the background technology, traditional fasteners, such as ordinary bolts, often become loose after long-term use due to factors such as vibration, temperature changes and material creep. This not only reduces the fastening force of the connection, but may also cause relative displacement between components and even lead to structural failure, posing a serious threat to flight safety.

[0028] In order to solve this technical problem, the utility model provides an anti-fatigue fastener.

[0029] Specifically, please refer to Figure 1-Figure 4 , anti-fatigue fasteners specifically include:

[0030] A bolt head 1, one side of the bolt head 1 is fixedly connected to a screw rod 101, the outer surface of the screw rod 101 is sleeved with a fixing ring 2, a limiting groove 201 is provided on the fixing ring 2, a connecting plate 3 is provided on the side of the bolt head 1 away from the screw rod 101, a connecting rod 4 is fixedly connected to the connecting plate 3, a limiting rod 5 is hinged on the connecting rod 4, and the limiting rod 5 is plugged into the inner wall of the limiting groove 201 to limit the axial movement of the bolt head 1 and the fixing ring 2.

[0031] The anti-fatigue fastener provided by the utility model is provided with a fixing ring 2, which is connected to the component to be fixed by glue or welding. A connecting plate 3, a connecting rod 4 and a limiting rod 5 are provided on the bolt head 1, and the limiting rod 5 is inserted into the limiting groove 201 to limit the bolt head 1. When the bolt head 1 and the screw rod 101 are subjected to vibration or external force, additional constraints are provided to limit the axial rotation of the screw rod 101, thereby significantly reducing the risk of loosening due to fatigue and improving the stability and reliability of the overall structure.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Example 1, please refer to Figure 1-Figure 4 , an anti-fatigue fastener comprises a bolt head 1, one side of the bolt head 1 is fixedly connected to a screw rod 101, the outer surface of the screw rod 101 is sleeved with a fixing ring 2, a limiting groove 201 is opened on the fixing ring 2, a connecting plate 3 is arranged on the side of the bolt head 1 away from the screw rod 101, a connecting plate 3 is fixedly connected to the connecting plate 3 is fixedly connected to a connecting rod 4, a limiting rod 5 is hinged on the connecting rod 4, and the limiting rod 5 is plugged into the inner wall of the limiting groove 201 to limit the axial movement of the bolt head 1 and the fixing ring 2, the present application provides a fixing ring 2, the fixing ring 2 is connected to the component to be fixed by glue or welding, the connecting plate 3, the connecting rod 4 and the limiting rod 5 are arranged on the bolt head 1, and the plugging of the limiting rod 5 and the limiting groove 201 can limit the bolt head 1, and can provide additional constraints when the bolt head 1 and the screw rod 101 are subjected to vibration or external force, limit the axial rotation of the screw rod 101, thereby significantly reducing the risk of loosening caused by fatigue and improving the stability and reliability of the overall structure.

[0036] Furthermore, the fixing ring 2 is used to be connected to the component to be fixed by glue or welding, so that the fixing ring 2 remains fixed. When the fixing ring 2 is installed, the limiting groove 201 is preferably set upward.

[0037] Further, such as Figure 3 and Figure 4As shown, a first magnet 6 is fixedly installed on the inner wall of the limit groove 201, and a second magnet 7 is arranged on the limit rod 5, and the first magnet 6 and the second magnet 7 are attracted to each other. The limit rod 5 can be limited by the mutual cooperation of the first magnet 6 and the second magnet 7, thereby improving the stability of the limit rod 5 after being inserted into the limit groove 201.

[0038] Embodiment 2 further optimizes the anti-fatigue fastener provided in Embodiment 1. Specifically, the connecting plate 3 and the bolt head 1 are fixedly connected. The fixing piece that can adapt to a specific thickness is arranged so that after the screw 101 is tightened, the limit rod 5 can be aligned with the limit groove 201 to achieve the connection between the limit rod 5 and the limit groove 201. When it is necessary to rotate the bolt head 1 and the screw 101, the limit rod 5 is now rotated to separate the limit rod 5 from the limit groove 201 to contact the limit of the bolt head 1.

[0039] Example 3 further optimizes the anti-fatigue fastener provided in Example 1. Specifically, Figure 4 As shown, the connecting plate 3 and the bolt head 1 are fixedly connected, a chamber 8 is provided on the side of the bolt head 1 away from the screw rod 101, the connecting plate 3 is installed in the chamber 8 through a bearing, a ratchet 9 is fixedly connected to the side of the connecting plate 3 close to the screw rod 101, and the connecting plate 3 is installed in the chamber 8 through a bearing, so that the connecting plate 3 can drive the limit rod 5 to rotate, so that it can adapt to fixings of different thicknesses.

[0040] Further, such as Figure 3 As shown, a connecting shaft 10 is fixedly installed on the inner wall of the chamber 8, and a pawl 11 is provided on the outer surface of the connecting shaft 10 through a bearing sleeve, and one end of the pawl 11 is engaged with the ratchet 9, and a first spring 12 is fixedly connected between the pawl 11 and the inner wall of the chamber 8. The engagement of the pawl 11 with the ratchet 9 can limit the connecting disk 3 to prevent the connecting disk 3 from rotating in the direction of loosening the screw 101.

[0041] Further, such as Figure 3 As shown, a groove is provided on the outer surface of the bolt head 1, in which a first connecting plate 13 is inserted, and both ends of the first connecting plate 13 extend out of the groove. After being connected to the bolt head 1 from a direction away from the first connecting plate 13 using a wrench, the first connecting plate 13 can be pushed to move by the wrench to achieve the first connecting plate 13 being away from the bolt head 1.

[0042] Further, such as Figure 1 As shown, the first connecting plate 13 corresponds to the outer surface of the limiting rod 5. When the first connecting plate 13 contacts the limiting rod 5, when the wrench pushes the first connecting plate 13, the limiting rod 5 can be pushed to rotate through the first connecting plate 13, so that the limiting rod 5 is separated from the limiting groove 201.

[0043] Further, such as Figure 3As shown, the first connecting plate 13 is fixedly connected to a limiting plate 15 on one side close to the ratchet 9, and the end of the limiting plate 15 away from the first connecting plate 13 penetrates into the chamber 8 and contacts with a side of the pawl 11 away from the ratchet 9. The limiting plate 15 limits the pawl 11 and thus prevents the pawl 11 from rotating. When the first connecting plate 13 is pushed by a wrench, the limiting plate 15 can be driven to separate from the pawl 11 to release the limiting of the pawl 11. At this time, the acting force of the first spring 12 can pull the pawl 11 so that the pawl 11 is separated from the ratchet 9.

[0044] Further, such as Figure 3 As shown, a side of the first connecting plate 13 close to the ratchet 9 is also fixedly connected to a second connecting plate 14, an end of the second connecting plate 14 away from the first connecting plate 13 penetrates into the chamber 8 and is fixedly connected to a second spring 16, an end of the second spring 16 away from the second connecting plate 14 is fixedly connected to the inner wall of the chamber 8, and the action force of the second spring 16 can limit the first connecting plate 13 through the second connecting plate 14 to improve the stability of the first connecting plate 13 being plugged into the groove.

[0045] When using for the first time, first screw the screw 101 between the two parts that need to be fixed together, and then use glue or welding to fix the fixing ring 2 to the corresponding parts together. When the screw 101 needs to be loosened, use an open-end wrench to connect with the bolt head 1. During this process, the wrench pushes the first connecting plate 13 away from the bolt head 1, and the first connecting plate 13 can push the limiting rod 5 to rotate, so that the limiting rod 5 is separated from the limiting groove 201. The first connecting plate 13 drives the limiting plate 15 to separate from the pawl 11 to release the limit on the pawl 11. At this time, the action force of the first spring 12 can It is enough to pull the pawl 11 to separate the pawl 11 from the ratchet 9, and then rotate the bolt head 1 so that the bolt head 1 drives the screw 101 to separate from the corresponding component. After the screw 101 is screwed together with the corresponding component again, if the limit rod 5 is aligned with the limit groove 201, the limit rod 5 and the limit groove 201 are plugged together. If the limit rod 5 is not aligned with the limit groove 201, pull the first connecting plate 13 to separate the limit plate 15 from the pawl 11, and then rotate the connecting disk 3 to align the limit rod 5 with the limit groove 201, and rotate the limit rod 5 to plug the limit rod 5 and the limit groove 201 together.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An anti-fatigue fastener, characterized in that: The invention comprises a bolt head (1), one side of the bolt head (1) is fixedly connected to a screw rod (101), the outer surface of the screw rod (101) is sleeved with a fixing ring (2), a limiting groove (201) is provided on the fixing ring (2), a connecting plate (3) is provided on the side of the bolt head (1) away from the screw rod (101), a connecting rod (4) is fixedly connected to the connecting plate (3), a limiting rod (5) is hingedly connected to the connecting rod (4), and the limiting rod (5) is plugged into the inner wall of the limiting groove (201) to limit the axial movement of the bolt head (1) and the fixing ring (2).

2. The anti-fatigue fastener according to claim 1, characterized in that: The fixing ring (2) is used to be connected to the component to be fixed by means of glue or welding.

3. The anti-fatigue fastener according to claim 1, characterized in that: The connection plate (3) and the bolt head (1) are fixedly connected.

4. The anti-fatigue fastener according to claim 1, characterized in that: A first magnet (6) is fixedly mounted on the inner wall of the limiting groove (201), a second magnet (7) is arranged on the limiting rod (5), and the first magnet (6) and the second magnet (7) are attracted to each other.

5. The anti-fatigue fastener according to claim 1, characterized in that: A chamber (8) is provided on a side of the bolt head (1) away from the screw rod (101); the connecting plate (3) is mounted in the chamber (8) via a bearing; and a ratchet (9) is fixedly connected to a side of the connecting plate (3) close to the screw rod (101).

6. The anti-fatigue fastener according to claim 5, characterized in that: A connecting shaft (10) is fixedly mounted on the inner wall of the chamber (8); a pawl (11) is provided on the outer surface of the connecting shaft (10) via a bearing sleeve, and one end of the pawl (11) is engaged with the ratchet wheel (9); a first spring (12) is fixedly connected between the pawl (11) and the inner wall of the chamber (8).

7. The anti-fatigue fastener according to claim 6, characterized in that: The outer surface of the bolt head (1) is provided with a groove, in which a first connecting plate (13) is inserted, and both ends of the first connecting plate (13) extend out of the groove.

8. The anti-fatigue fastener according to claim 7, characterized in that: The first connecting plate (13) corresponds to the outer surface of the limiting rod (5).

9. The anti-fatigue fastener according to claim 8, characterized in that: A side of the first connecting plate (13) close to the ratchet (9) is fixedly connected to a limiting plate (15), and an end of the limiting plate (15) away from the first connecting plate (13) penetrates into the chamber (8) and contacts a side of the pawl (11) away from the ratchet (9).

10. The anti-fatigue fastener according to claim 9, characterized in that: A second connecting plate (14) is fixedly connected to a surface of the first connecting plate (13) close to the ratchet (9); an end of the second connecting plate (14) away from the first connecting plate (13) penetrates into the chamber (8) and is fixedly connected to a second spring (16); an end of the second spring (16) away from the second connecting plate (14) is fixedly connected to the inner wall of the chamber (8).

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