Combined nut

Abstract

The utility model discloses a combined nut, relates to the technical field of nuts, solves the problems that an existing device is low in installation firmness and inconvenient to use, and adopts the following scheme that a nut A and a nut B are assembled on the outer wall of a thread head. The nut A and the gasket A are rotationally installed on the screw rod, then the nut B is rotationally installed on the screw rod, the connecting ring is clamped in the connecting groove, and the installation of the nut A is limited and fixed, so that the installation stability and firmness of the nut A are improved, and the use effect of the nut A is improved; after a nut is fixed through one set of wrenches, the bolt head is reversely rotated through the other set of wrenches, the bolt head and the screw can be detached from a workpiece, the stability of connection between the bolt head and the workpiece is improved through the gasket B, installation and detachment are easy and convenient, and use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically a combination nut. Background Technology

[0002] A nut is a fastener that is screwed together with a bolt or screw to provide a fastening function. All manufacturing machinery is divided into several types according to the different materials used, such as carbon steel, stainless steel, and non-ferrous metals. Nuts are the parts that tightly connect mechanical equipment. Only nuts and bolts of the same specifications can be connected together through the internal threads.

[0003] A search revealed that patent application CN219035272U discloses a combined nut, including a nut body. One side of the nut body has a cylindrical boss, which is integrally formed with the nut body. A washer is provided on the outer side of the boss. A T-shaped limiting groove is provided on the lower part of the inner sidewall of the boss, with the lower end of the limiting groove passing through the boss. A limiting member is provided in the limiting groove, which includes a limiting part embedded in the T-shaped limiting groove and an outward protrusion at the lower end of the limiting part. The upper end of the outward protrusion abuts against the lower end face of the washer. This can limit the washer, prevent the washer and the nut from rotating together, and improve the stability of the nut installation.

[0004] However, due to the single nut design, the nut is prone to loosening after prolonged use due to vibration of the object. The nut has low installation firmness and stability, resulting in poor performance. In addition, due to the combination of bolt and nut, the bolt can only be fixed by the nut. When the nut is inconvenient to rotate for installation or disassembly, it is inconvenient to use.

[0005] Therefore, we propose a combined nut. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a combined nut that solves the problems of low installation stability and inconvenience in use of existing devices.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a combined nut, including a screw rod, wherein a bolt head of a matching specification is fixedly installed at the bottom end of the screw rod;

[0008] Nuts A and B of the same specification are fitted on the outer wall of the screw. Nuts A and B have threaded holes A and B of the same specification on their top surfaces. A washer A of the same specification is fitted on the bottom surface of nut A. The washer A is made of carbon steel. A connecting groove is formed on the top surface of nut A. A connecting ring of the same specification is fixedly installed on the bottom surface of nut B.

[0009] The bolt head is hexagonal, with a hexagonal groove of appropriate size on the bottom surface of the bolt head, a washer B of appropriate size fitted on the top surface of the bolt head, a retaining groove on the top surface of the bolt head, and a retaining ring of appropriate size fixedly installed on the bottom surface of the washer B.

[0010] Preferably, the outer walls of nuts A and B are hexagonal, which makes it easy to rotate nuts A and B onto the screw using a hex wrench.

[0011] Preferably, the gasket B is made of rubber material, which can prevent the gasket B and the bolt head from damaging the object and improve its service life.

[0012] Preferably, the inner wall of the connecting groove is fitted with a rubber layer of the same specifications, which can improve the fit and connection of the connecting ring in the connecting groove.

[0013] Preferably, the outer wall of the bolt head has corresponding and penetrating limiting holes, so that the bolt head can be limited by a locking pin.

[0014] Preferably, the screw and bolt head are manufactured as a single piece, which improves the connection and strength of the screw and bolt head and prevents breakage.

[0015] This type of combined nut, through the arrangement of nut A, nut B and connecting groove, firstly, nut A and washer A are rotated and installed on the screw, and then nut B is rotated and installed on the screw. The connecting ring is locked in the connecting groove, which limits and fixes the installation of nut A, thereby improving the stability and firmness of nut A installation and improving its performance.

[0016] Meanwhile, with the hexagonal groove and washer B, when the nut is inconvenient to rotate with a wrench, one set of wrenches can fix the nut, and another set of wrenches can rotate the bolt head in the opposite direction, so that the bolt head and screw can be removed from the workpiece. Washer B can improve the stability of the connection between the bolt head and the workpiece, making installation and disassembly simple and convenient, and improving the convenience of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the bolt head structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the card slot structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of gasket B of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the nut of this utility model.

[0022] In the diagram: 1. Screw; 2. Bolt head; 3. Nut A; 4. Threaded hole A; 5. Connecting groove; 6. Nut B; 7. Threaded hole B; 8. Connecting ring; 9. Washer A; 10. Hexagonal groove; 11. Snap groove; 12. Washer B; 13. Snap ring; 14. Limiting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1:

[0024] like Figure 1-5 As shown: Nuts A3 and B6 of the same specifications are assembled on the outer wall of screw 1. The top surfaces of nuts A3 and B6 are provided with threaded holes A4 and B7 of the same specifications. The bottom surface of nut A3 is equipped with a washer A9 of the same specifications, which is made of carbon steel. The top surface of nut A3 is provided with a connecting groove 5. The bottom surface of nut B6 is fixedly installed with a connecting ring 8 of the same specifications. Through the arrangement of nuts A3, nut B6 and connecting groove 5, nuts A3 and washer A9 are first rotated and installed on screw 1, and then nuts B6 are rotated and installed on screw 1. The connecting ring 8 is stuck in the connecting groove 5, which limits and fixes the installation of nut A3, thereby improving the stability and firmness of the installation of nut A3 and improving its performance.

[0025] Example 2:

[0026] like Figure 2-5 As shown: Bolt head 2 is hexagonal, with a hexagonal groove 10 of appropriate size on the bottom surface of bolt head 2, and a washer B12 of appropriate size fitted on the top surface of bolt head 2. A retaining groove 11 is formed on the top surface of bolt head 2, and a retaining ring 13 of appropriate size is fixedly installed on the bottom surface of washer B12. Through the setting of hexagonal groove 10 and washer B12, when the nut is inconvenient to rotate with a wrench, after one set of wrenches fixes the nut, another set of wrenches rotates the bolt head 2 in the opposite direction, thereby removing the bolt head 2 and screw 1 from the workpiece. The washer B12 can improve the stability of the connection between bolt head 2 and workpiece, making installation and disassembly simple and convenient, and improving the convenience of use.

[0027] Example 3;

[0028] like Figure 2-3As shown: Gasket B12 is made of rubber material, which can prevent gasket B12 and bolt head 2 from damaging the object and improve its service life.

[0029] The working principle and usage process of this utility model are as follows: When the device is required to work, first rotate and install nut A3 and washer A9 onto screw 1, and then rotate and install nut B6 onto screw 1. Connecting ring 8 is locked in connecting groove 5 to limit and fix the installation of nut A3, thereby improving the stability and firmness of nut A3 installation and improving its performance. When the nut is inconvenient to rotate with a wrench, after one set of wrenches fixes the nut, another set of wrenches is used to rotate bolt head 2 in the opposite direction, thereby removing bolt head 2 and screw 1 from the workpiece. Washer B12 can improve the stability of the connection between bolt head 2 and workpiece. Installation and disassembly are simple and convenient, improving the ease of use.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A combination nut, comprising a screw (1), wherein a bolt head (2) of a matching specification is fixedly installed at the bottom end of the screw (1); Its features are: The screw (1) is fitted with nuts A (3) and B (6) of the same specifications on its outer wall. The top surfaces of nuts A (3) and B (6) are provided with threaded holes A (4) and B (7) of the same specifications. The bottom surface of nut A (3) is fitted with a washer A (9) of the same specifications. The washer A (9) is made of carbon steel. The top surface of nut A (3) is provided with a connecting groove (5). The bottom surface of nut B (6) is fixedly installed with a connecting ring (8) of the same specifications. The bolt head (2) is hexagonal, and the bottom surface of the bolt head (2) is provided with a hexagonal groove (10) of the same specification. The top surface of the bolt head (2) is equipped with a gasket B (12) of the same specification. The top surface of the bolt head (2) is provided with a retaining groove (11). The bottom surface of the gasket B (12) is fixedly installed with a retaining ring (13) of the same specification.

2. A combined nut according to claim 1, characterized in that: The outer walls of nuts A (3) and B (6) are hexagonal.

3. A combined nut according to claim 1, characterized in that: The gasket B (12) is made of rubber material.

4. A combined nut according to claim 1, characterized in that: The inner wall of the connecting groove (5) is fitted with a rubber layer of matching specifications.

5. A combined nut according to claim 1, characterized in that: The outer wall of the bolt head (2) is provided with a limiting hole (14) that is opposite to and penetrates through it.

6. A combined nut according to claim 1, characterized in that: The screw (1) and bolt head (2) are manufactured as a single piece.

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