Integrated self-locking nut

Abstract

The utility model relates to the technical field of nuts, in particular to an integrated self-locking nut which comprises a screw rod and a nut body in threaded connection with the screw rod, a plurality of installation grooves are formed in one end of the nut body, and elastic anti-loosening pieces are arranged in the installation grooves. The elastic anti-loosening piece comprises a welding part, an elastic deformation part, a contact anti-loosening part, a rubber jacking sleeve and anti-skid lines, and the rubber jacking sleeve is located at the end, close to the center position of the screw rod, of the elastic anti-loosening piece. According to the integrated self-locking nut, due to the fact that the elastic anti-loosening piece capable of deforming under pressure is arranged, when the nut is connected with a fixing body, the elastic deformation part is deformed under pressure, the contact anti-loosening parts can be tightly attached to the fixing body, then outward thrust is applied to the nut, and therefore the nut can be prevented from loosening, and meanwhile the two contact anti-loosening parts are arranged in the elastic anti-loosening piece; and the contact anti-loosening part is provided with anti-skid lines, so that the friction force between the elastic anti-loosening piece and the fixed body can be obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to an integrated self-locking nut. Background Technique

[0002] A nut is a part that tightly connects mechanical equipment. Through the internal thread, it is fixedly connected with other parts. However, when the nut and the bolt are fixed, the nut is likely to become loose over time.

[0003] It is found that the publication (announcement) number: CN211117052U discloses an integrated self-locking nut. In this technology, it is disclosed that "including a main body, a spring piece is fixedly installed at the upper end of the main body, a threaded hole is opened in the middle of the main body, an empty groove is arranged in the middle of the threaded hole, a connection hole is opened in the middle of the empty groove, and a fixing bolt is rotationally connected through gear engagement inside the connection hole, and the outside of the fixing bolt is placed in the installation hole"; for this integrated self-locking nut, by setting the spring piece, when the main body is connected with the fixed body, the object to be fixed will exert a certain pressure on the spring piece, and then a thrust force towards the outside can be given to the main body, thereby preventing the main body from loosening. By setting the fixing bolt and extruding it towards the inside of the threaded hole at the same time, the bolt can be fixed.

[0004] Although pressure is exerted on the fixed body through the spring piece to apply an outward thrust to the nut, the friction between the spring piece and the fixed body is small, resulting in a poor anti-loosening effect. In addition, by setting a rotatable small bolt to press against the bolt on the bolt to prevent loosening again, but when installing the nut, the added small bolt needs to be independently adjusted, and the operation is cumbersome.

[0005] To solve the above problems, an integrated self-locking nut is proposed in this application. Content of the Utility Model

[0006] To solve the problems raised in the above background technique. The utility model provides an integrated self-locking nut, which can perform multiple fixations on the nut to prevent loosening and has the characteristics of simple operation.

[0007] To achieve the above object, the utility model provides the following technical solution: an integrated self-locking nut, including a screw rod and a nut threadedly connected to the screw rod. One end of the nut is provided with a plurality of installation grooves, and an elastic anti-loosening member is arranged in each of the plurality of installation grooves. The elastic anti-loosening member includes a welding part, an elastic deformation part, a contact anti-loosening part, a rubber pressing sleeve, and an anti-slip pattern. The rubber pressing sleeve is located at one end of the elastic anti-loosening member close to the center of the screw rod. The contact anti-loosening part protrudes 2-5 mm above the top of the installation groove. When the contact anti-loosening part completely moves into the installation groove, the contact anti-loosening part is flush with the end of the nut at this time.

[0008] Preferably, the installation groove is of a rectangular structure, and the number of the installation grooves is 3-6 groups. The installation grooves are evenly distributed at one end of the nut. Through the cooperation of a plurality of elastic anti-loosening members in the plurality of installation grooves, firm locking of the nut can be achieved.

[0009] Preferably, the elastic anti-loosening member is integrally in an inverted "W" shape. The welding part is welded to the bottom inside the installation groove. Elastic deformation parts are arranged on both sides of the welding part. When the elastic deformation parts are compressed and deformed, the contact anti-loosening part can be closely attached to the fixed body, and then a thrust force towards the outside is applied to the nut, thereby preventing the nut from loosening.

[0010] Preferably, contact anti-loosening parts are arranged at one ends of the two groups of elastic deformation parts far away from the welding part. Anti-slip lines are formed on the surface of the contact anti-loosening parts. There are two groups of contact anti-loosening parts in the elastic anti-loosening member, and anti-slip lines are arranged on the contact anti-loosening parts, which can significantly improve the friction force between the elastic anti-loosening member and the fixed body.

[0011] Preferably, the rubber pressing sleeve is wrapped around a group of contact anti-loosening parts near the center of the nut, and the thickness of the rubber pressing sleeve wrapped at the end of the contact anti-loosening part is 4-8 mm. The rubber pressing sleeve can be deformed when being extruded, preventing the external thread of the screw rod from being damaged by the rigid structure.

[0012] Preferably, when the contact anti-loosening part completely moves into the installation groove, at this time, the rubber pressing sleeve can tightly press the external thread of the screw rod. When the elastic deformation part is compressed and deformed, the rubber pressing sleeve can be extruded to move inwards, so that the rubber pressing sleeve tightly presses the external thread of the screw rod, and the nut is locked again.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. For this integrated self-locking nut, by arranging an elastic anti-loosening member that can be deformed under pressure, when the nut is connected to the fixed body, the elastic deformation part is compressed and deformed, so that the contact anti-loosening part can be closely attached to the fixed body, and then a thrust force towards the outside is applied to the nut, thereby preventing the nut from loosening. At the same time, there are two groups of contact anti-loosening parts in the elastic anti-loosening member, and anti-slip lines are arranged on the contact anti-loosening parts, which can significantly improve the friction force between the elastic anti-loosening member and the fixed body and improve the anti-loosening effect of the elastic anti-loosening member on the nut.

[0015] 2. For this integrated self-locking nut, by arranging a rubber pressing sleeve at one end of the elastic anti-loosening member close to the screw rod, when the elastic deformation part is compressed and deformed, the rubber pressing sleeve can be extruded to move inwards, so that the rubber pressing sleeve tightly presses the external thread of the screw rod, and the nut is locked again. Multiple locking of the nut can significantly improve the self-locking ability of the nut, and the structure of the nut is simple and the operation is convenient. Description of the Drawings

[0016] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the description. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0017] Figure 1 It is a schematic structural diagram of the overall combination of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of one end of the nut of the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the cross-section of the nut of the present utility model;

[0020] Figure 4 It is a schematic structural diagram of the elastic anti-loosening member of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of the elastic anti-loosening member during operation of the present utility model.

[0022] In the figure:

[0023] 1, screw rod; 2, nut; 3, installation groove; 4, elastic anti-loosening member; 41, welding part; 42, elastic deformation part; 43, contact anti-loosening part; 44, rubber pressing sleeve; 45, anti-slip pattern. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 to 5 shown: An integrated self-locking nut, including a screw rod 1 and a nut 2 threadedly connected to the screw rod 1.

[0027] In this implementation: After investigation, the publication (announcement) number: CN211117052 discloses an integrated self-locking nut. Although pressure is applied to the fixed body through the elastic piece to apply an outward thrust to the nut, the friction between the elastic piece and the fixed body is small, resulting in a poor anti-loosening effect. In addition, a rotatable small bolt is provided to press the bolt on the bolt to prevent loosening again. However, when installing the nut, the added small bolt needs to be independently adjusted, and the operation is cumbersome. In terms of combined use, this problem is obviously an existing and difficult-to-solve problem. In view of this, to solve this technical problem, an elastic anti-loosening piece 4 is added to this application document;

[0028] Combined with the above content: Several installation grooves 3 are opened at one end of the nut 2, and elastic anti-loosening pieces 4 are arranged in several installation grooves 3. The elastic anti-loosening piece 4 is made of spring steel except for the rubber pressing sleeve 44, ensuring that the elastic anti-loosening piece 4 can deform to press the nut 2, improving the self-locking effect of the nut 2. The elastic anti-loosening piece 4 includes a welding part 41, an elastic deformation part 42, a contact anti-loosening part 43, a rubber pressing sleeve 44, and an anti-slip pattern 45. When the nut 2 is connected to the fixed body, the elastic deformation part 42 is compressed and deformed, enabling the contact anti-loosening part 43 to closely adhere to the fixed body, thereby applying an outward thrust to the nut 2, thus preventing the nut 2 from loosening. The rubber pressing sleeve 44 is located at one end of the elastic anti-loosening piece 4 close to the center of the screw 1. The contact anti-loosening part 43 protrudes 2-5 mm above the top of the installation groove 3. There are two groups of contact anti-loosening parts 43 in the elastic anti-loosening piece 4, and anti-slip patterns 45 are arranged on the contact anti-loosening parts 43, which can significantly increase the friction between the elastic anti-loosening piece 4 and the fixed body, improving the anti-loosening effect of the elastic anti-loosening piece 4 on the nut 2. When the contact anti-loosening part 43 completely moves into the installation groove 3, the contact anti-loosening part 43 is flush with the end of the nut 2 at this time. When the elastic deformation part 42 is compressed and deformed, it can squeeze the rubber pressing sleeve 44 to move inward, so that the rubber pressing sleeve 44 presses tightly against the thread outside the screw 1, locking the nut 2 again.

[0029] In an alternative embodiment: The installation groove 3 is of a rectangular structure, and the number of installation grooves 3 is 3-6 groups, and the installation grooves 3 are evenly distributed at one end of the nut 2.

[0030] In this embodiment: By opening the installation groove 3 to reserve the installation space for the elastic anti-loosening piece 4, and through the cooperation of several elastic anti-loosening pieces 4 in several installation grooves 3, the firm locking of the nut 2 can be achieved, preventing the nut 2 from loosening.

[0031] In an alternative embodiment: The elastic anti-loosening piece 4 is in an inverted "W" shape as a whole, and the welding part 41 is welded to the bottom inside the installation groove 3, and elastic deformation parts 42 are arranged on both sides of the welding part 41.

[0032] In this embodiment: When the elastic deformation part 42 is compressed and deformed, it can make the contact anti-loosening part 43 closely adhere to the fixed body, and then apply an outward thrust to the nut 2, thereby preventing the nut 2 from loosening.

[0033] In an alternative embodiment: Contact anti-loosening parts 43 are provided at one ends of two groups of elastic deformation parts 42 away from the welding part 41, and anti-slip lines 45 are formed on the surfaces of the contact anti-loosening parts 43.

[0034] In this embodiment: Two groups of contact anti-loosening parts 43 are provided in the elastic anti-loosening part 4, and anti-slip lines 45 are provided on the contact anti-loosening parts 43, which can significantly increase the friction between the elastic anti-loosening part 4 and the fixed body and improve the anti-loosening effect of the elastic anti-loosening part 4 on the nut 2.

[0035] In an alternative embodiment: A rubber pressing sleeve 44 is wrapped around a group of contact anti-loosening parts 43 near the center of the nut 2, and the thickness of the rubber pressing sleeve 44 wrapped around the end of the contact anti-loosening part 43 is 4 - 8 mm.

[0036] In this embodiment: Driven by the contact anti-loosening part 43, the rubber pressing sleeve 44 can press against the external thread of the screw rod 1 to lock the nut 2 again. At the same time, the rubber pressing sleeve 44 can be deformed when being extruded, preventing the external thread of the screw rod 1 from being damaged due to a rigid structure.

[0037] In an alternative embodiment: When the contact anti-loosening part 43 completely moves into the installation groove 3, at this time, the rubber pressing sleeve 44 can press against the external thread of the screw rod 1.

[0038] In this embodiment: When the elastic deformation part 42 is compressed and deformed, it can squeeze the rubber pressing sleeve 44 to move inward, so that the rubber pressing sleeve 44 presses against the external thread of the screw rod 1 to lock the nut 2 again and perform multiple lockings on the nut 2.

[0039] Working principle and usage process of the present utility model: When the screw 1 and the nut 2 are installed on the fixed body, multiple elastic anti-loosening members 4 at one end of the nut 2 are deformed by the extrusion of the fixed body. The elastic deformation part 42 in the elastic anti-loosening member 4 is deformed under pressure, causing the contact anti-loosening part 43 to closely adhere to the fixed body, applying an outward thrust to the nut 2, thereby preventing the nut 2 from loosening. When the contact anti-loosening part 43 is completely moved into the installation groove 3 under pressure, it is in a horizontal state, enabling the contact anti-loosening part 43 to contact the fixed body to the maximum extent. At the same time, there are two groups of contact anti-loosening parts 43 provided in the elastic anti-loosening member 4, and anti-slip lines 45 are provided on the contact anti-loosening part 43, significantly increasing the friction force between the elastic anti-loosening member 4 and the fixed body, improving the anti-loosening effect of the elastic anti-loosening member 4 on the nut 2; A rubber pressing sleeve 44 is provided at a position close to the center of the nut 2 in the elastic anti-loosening member 4. When the elastic deformation part 42 is deformed under pressure, the rubber pressing sleeve 44 is synchronously extruded to move inward, causing the rubber pressing sleeve 44 to tightly press against the thread outside the screw 1, locking the nut 2 again, and performing multiple lockings on the nut 2, significantly improving the self-locking ability of the nut 2.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An integrated self-locking nut, comprising a screw rod (1) and a nut (2) threadedly connected to the screw rod (1), characterized in that: One end of the nut (2) is provided with a plurality of mounting grooves (3), and each of the plurality of mounting grooves (3) is provided with an elastic anti-loosening member (4), wherein the elastic anti-loosening member (4) comprises a welding portion (41), an elastic deformation portion (42), a contact anti-loosening member (43), a rubber top pressure sleeve (44), and anti-slip grooves (45), wherein the rubber top pressure sleeve (44) is located at one end of the elastic anti-loosening member (4) close to the center of the screw rod (1), and the contact anti-loosening member (43) protrudes 2-5 mm from the top of the mounting groove (3). When the contact anti-loosening member (43) is completely moved into the interior of the mounting groove (3), the contact anti-loosening member (43) is flush with the end of the nut (2).

2. The one-piece self-locking nut according to claim 1, characterized in that: The mounting grooves (3) are of rectangular structure, the number of the mounting grooves (3) is 3-6 groups, and the mounting grooves (3) are evenly distributed at one end of the nut (2).

3. The one-piece self-locking nut according to claim 1, characterized in that: The elastic anti-loosening component (4) is in an inverted "W" shape as a whole, the welding portion (41) is welded to the bottom of the inner side of the installation groove (3), and elastic deformation portions (42) are provided on both sides of the welding portion (41).

4. The one-piece self-locking nut according to claim 1, characterized in that: The ends of the two groups of elastic deformation parts (42) away from the welding part (41) are both provided with a contact anti-loosening part (43), and the surface of the contact anti-loosening part (43) is provided with anti-slip grooves (45).

5. The one-piece self-locking nut according to claim 1, characterized in that: The rubber top pressing sleeve (44) is wrapped around a group of contact anti-loosening parts (43) near the center of the nut (2), and the thickness of the rubber top pressing sleeve (44) wrapped around the end of the contact anti-loosening part (43) is 4-8 mm.

6. The one-piece self-locking nut according to claim 1, characterized in that: When the contact anti-loosening portion (43) is completely moved to the inside of the installation groove (3), the rubber pressing sleeve (44) can press against the threads on the outside of the screw rod (1).

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