Combined lock nut

Abstract

The utility model relates to the technical field of nuts, in particular to a combined lock nut which comprises a nut body, a check ring assembly is arranged on the outer surface of the nut body in a sleeved mode, the front face of the check ring assembly is connected with a cylinder, and the combined lock nut further comprises a check rod connected to a fastened piece in an inserted mode. A limiting assembly for preventing the nut body from rotating reversely is detachably connected between the stop rod and the cylinder. The check ring assembly comprises an outer ring body and a plastic circular plate, a polygonal hole matched with the nut body is formed in the center of the plastic circular plate, and the check ring assembly further comprises a connecting piece for preventing the outer ring body and the plastic circular plate from axially sliding and circumferentially rotating. The anti-loosening device is reasonable in structure and solves the problem that the anti-loosening effect is poor.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, and in particular to a combined anti-loosening nut. Background Technology

[0002] A nut, also known as a bolt or threaded nut, is a component that is screwed onto a bolt or threaded rod to fasten it. It is an essential element in all manufacturing machinery, used to tightly connect mechanical equipment. Through its internal threads, nuts and bolts of the same specifications can be connected together to achieve a secure fit, preventing loosening or displacement of parts during operation. A wrench is typically used to turn the nut to achieve the purpose of tightening or loosening.

[0003] Regarding the aforementioned technologies, the inventors discovered that when the nut and bolt connections are used in engineering machinery, the nuts at the connection points of key components of the machinery need to have a strong anti-loosening effect. However, existing nuts generally use a combination of spring washers and flat washers to prevent loosening. Since the machinery is in a state of vibration for a long time, the nuts will still loosen to a certain extent, which has a certain impact on the connection effect and safety of key components in the machinery. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a combined anti-loosening nut, which solves the problem of poor anti-loosening effect.

[0005] To solve the above technical problems, the present invention adopts a technical solution as follows: a combined anti-loosening nut is provided, including: a nut body, a stop ring assembly is sleeved on the outer surface of the nut body, a circular cylinder is connected to the front of the stop ring assembly, and a stop rod is inserted into the fastener, and a limiting assembly that prevents the nut body from rotating in the opposite direction is detachably connected between the stop rod and the circular cylinder.

[0006] The stop ring assembly includes an outer ring body and a plastic circular plate. The center of the plastic circular plate is provided with a polygonal hole that is adapted to the nut body. It also includes a connecting piece that prevents the outer ring body from sliding axially and rotating circumferentially with the plastic circular plate.

[0007] By adopting the above technical solution, during use, the bolt is inserted into the fastener, and the nut body is screwed onto the bolt and tightly fitted to the fastener. A process hole is drilled on the fastener using an electric drill, and the stop rod is inserted into the process hole for fixation. Next, the limiting component is connected between the stop rod and the cylindrical body. The limiting component exerts a force on the nut body, thereby preventing the nut body from rotating in the opposite direction and achieving the purpose of preventing loosening, thus enhancing the anti-loosening effect. The plastic circular plate on the stop ring component contacts the nut body, reducing the probability of difficulty in disassembly due to corrosion between the stop ring component and the nut body, and improving the convenience of operation.

[0008] In a preferred embodiment, the present invention can be further configured such that the limiting component includes a tension spring, an annular groove one disposed on a cylindrical body, and an annular groove two disposed on a stop rod, with one end of the tension spring sleeved in the annular groove one and the other end sleeved in the annular groove two.

[0009] By adopting the above technical solution, under the tension of the tension spring, the nut body tends to be tightened and rotated, thereby preventing the nut body from rotating in the opposite direction and achieving the purpose of preventing loosening.

[0010] In a preferred embodiment, the present invention can be further configured as follows: the limiting component includes a swinging round rod, a spring sleeved on its outer circle, and a retaining ring. One end of the swinging round rod is connected to a rotating seat, and the other end is engaged with an elastic arc-shaped plate. The rotating seat is sleeved on the outer circle of the circular cylinder and is rotatably connected. An L-shaped plate is connected to the outer surface of the elastic arc-shaped plate. The L-shaped plate is connected to one end of the stop rod. One end of the spring is in contact with the rotating seat, and the other end is in contact with the retaining ring.

[0011] By adopting the above technical solution, after the nut body is tightened, it pushes the retaining ring to compress the spring. Then, the swinging rod is operated to swing towards the elastic arc plate. After the opening of the elastic arc plate is squeezed and deformed, one end of the swinging rod enters the inner cavity of the elastic arc plate, releasing the retaining ring so that the spring returns to its original state. The spring generates elastic force on the stop ring assembly, thereby preventing the nut body located in the stop ring assembly from rotating in the opposite direction and loosening.

[0012] In a preferred embodiment, the present invention can be further configured such that a circular baffle is connected to the outer end of the circular cylinder, which is suitable for preventing the rotating seat from detaching from the circular cylinder.

[0013] By adopting the above technical solution, the rotating seat is axially limited by the circular baffle, preventing the rotating seat from detaching from the circular cylinder, thus enhancing the stability of use.

[0014] In a preferred embodiment, the present invention can be further configured such that: the connector includes a ring array of limiting grooves arranged on the outer circle of the plastic circular plate, the limiting grooves do not penetrate the plastic circular plate, and each limiting groove is provided with a plug-in block, the plug-in block being connected to the inner circle of the outer ring body.

[0015] By adopting the above technical solution, the outer ring body is fitted onto the outer circle of the plastic circular plate, so that the plug-in block moves into the corresponding limiting groove. Since the limiting groove does not penetrate the plastic circular plate, the outer ring body limits the plastic circular plate in both the axial and circumferential directions.

[0016] In summary, this utility model has at least one of the following beneficial technical effects:

[0017] The limiting component is connected between the stop rod and the cylindrical body. The limiting component generates a force that prevents the nut body from rotating in the opposite direction, thereby achieving the purpose of preventing loosening and enhancing the fixing effect of the nut and bolt connection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0020] Figure 2 yes Figure 1 A schematic diagram of the stop ring assembly.

[0021] Figure 3 yes Figure 1 A schematic diagram of the connection between the medium-sized cylindrical body, the stop rod, and the limiting assembly.

[0022] Figure 4 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0023] Figure 5 This is a schematic diagram of the limiting component in Embodiment 2.

[0024] In the diagram: 1. Nut body; 20. Stop ring assembly; 3. Circular cylinder; 4. Stop rod; 50. Limiting assembly; 6. Circular baffle;

[0025] 21. Outer ring; 22. Plastic circular plate; 23. Polygonal hole; 24. Connector; 241. Limiting groove;

[0026] 242. Connector block;

[0027] 51. Swinging rod; 52. Spring; 53. Retaining ring; 54. Rotating seat; 55. Elastic arc plate; 56. L-shaped plate; 57. Tension spring; 58. Annular groove one; 59. Annular groove two. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0030] Example 1:

[0031] Reference Figure 1 and Figure 2 This utility model discloses a combined anti-loosening nut, which includes: a nut body 1, a stop ring assembly 20 sleeved on the outer surface of the nut body 1, a circular cylinder 3 connected to the front of the stop ring assembly 20, and a stop rod 4 inserted into the fastener. A limiting assembly 50 that prevents the nut body 1 from rotating in the opposite direction is detachably connected between the stop rod 4 and the circular cylinder 3.

[0032] The stop ring assembly 20 includes an outer ring body 21 and a plastic circular plate 22. The center of the plastic circular plate 22 is provided with a polygonal hole 23 that is adapted to the nut body 1. It also includes a connecting piece 24 that prevents the outer ring body 21 and the plastic circular plate 22 from sliding axially and rotating circumferentially.

[0033] The connector 24 includes a ring array of limiting grooves 241 arranged on the outer circle of the plastic circular plate 22. The limiting grooves 241 do not penetrate the plastic circular plate 22. Insertion blocks 242 are respectively provided in the limiting grooves 241. The insertion blocks 242 are connected to the inner circle of the outer ring body 21. The outer ring body 21 is fitted on the outer circle of the plastic circular plate 22, so that the insertion blocks 242 move into the corresponding limiting grooves 241. Since the limiting grooves 241 do not penetrate the plastic circular plate 22, the outer ring body 21 limits the plastic circular plate 22 in both the axial and circumferential directions.

[0034] The limiting component 50 includes a tension spring 57, an annular groove 58 on the cylindrical body 3, and an annular groove 59 on the stop rod 4. One end of the tension spring 57 is fitted into the annular groove 58, and the other end is fitted into the annular groove 59. Under the tension of the tension spring 57, the nut body 1 tends to be tightened and rotated, thereby preventing the nut body 1 from rotating in the opposite direction and achieving the purpose of preventing loosening.

[0035] The implementation principle of Example 1 is as follows: In use, the bolt is passed through the fastener, and the nut body 1 is screwed onto the bolt and tightly attached to the fastener. A process hole is machined on the fastener using a hand drill, and the stop rod 4 is inserted into the process hole for fixation. Next, the tension spring 57 on the limiting assembly 50 is connected between the second annular groove 59 of the stop rod 4 and the first annular groove 58 of the cylindrical body 3. The tension spring 57 generates tension on the nut body 1, thereby preventing the nut body 1 from rotating in the opposite direction, achieving the purpose of preventing loosening, that is, enhancing the anti-loosening effect. The plastic circular plate 22 on the stop ring assembly 20 contacts the nut body 1, reducing the probability of difficulty in disassembly due to corrosion between the stop ring assembly 20 and the nut body 1, and improving the convenience of operation.

[0036] Example 2:

[0037] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the limiting component 50 includes a swinging round rod 51, a spring 52 sleeved on its outer circle, and a retaining ring 53. One end of the swinging round rod 51 is connected to a rotating seat 54, and the other end is engaged with an elastic arc plate 55. The rotating seat 54 is sleeved on the outer circle of the circular cylinder 3 and is rotatably connected. An L-shaped plate 56 is connected to the outer surface of the elastic arc plate 55. The L-shaped plate 56 is connected to one end of the stop rod 4. One end of the spring 52 is in contact with the rotating seat 54, and the other end is in contact with the retaining ring 53.

[0038] A circular baffle 6 is connected to the outer end of the circular cylinder 3, which is suitable for preventing the rotating seat 54 from detaching from the circular cylinder 3; the circular baffle 6 axially limits the rotating seat 54, preventing the rotating seat 54 from detaching from the circular cylinder 3, thereby enhancing the stability of use.

[0039] The implementation principle of Example 2 is as follows: When in use, after the nut body 1 is tightened, the retaining ring 53 is pushed to compress the spring 52. Then, the swinging rod 51 is operated to swing towards the elastic arc plate 55. After the opening of the elastic arc plate 55 is squeezed and deformed, one end of the swinging rod 51 enters the inner cavity of the elastic arc plate 55. The retaining ring 53 is released, allowing the spring 52 to recover. The spring 52 generates elastic force that acts on the stop ring assembly 20, thereby preventing the nut body 1 located in the stop ring assembly 20 from rotating in the opposite direction and loosening.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A combination lock nut, comprising: The nut body (1) is characterized in that a stop ring assembly (20) is sleeved on the outer surface of the nut body (1), a circular cylinder (3) is connected to the front of the stop ring assembly (20), and a stop rod (4) is inserted into the fastener. A limiting assembly (50) that prevents the nut body (1) from rotating in the opposite direction is detachably connected between the stop rod (4) and the circular cylinder (3). The stop ring assembly (20) includes an outer ring body (21) and a plastic circular plate (22). The center of the plastic circular plate (22) is provided with a polygonal hole (23) that is adapted to the nut body (1). It also includes a connector (24) that prevents the outer ring body (21) and the plastic circular plate (22) from sliding axially and rotating circumferentially.

2. The combined anti-loosening nut according to claim 1, characterized in that, The limiting component (50) includes a tension spring (57), an annular groove 1 (58) provided on the circular cylinder (3) and an annular groove 2 (59) provided on the stop rod (4). One end of the tension spring (57) is sleeved in the annular groove 1 (58) and the other end is sleeved in the annular groove 2 (59).

3. The combined anti-loosening nut according to claim 1, characterized in that, The limiting component (50) includes a swinging rod (51), a spring (52) sleeved on its outer circle, and a retaining ring (53). One end of the swinging rod (51) is connected to a rotating seat (54), and the other end is engaged with an elastic arc plate (55). The rotating seat (54) is sleeved on the outer circle of the circular cylinder (3) and is rotatably connected. An L-shaped plate (56) is connected to the outer surface of the elastic arc plate (55). The L-shaped plate (56) is connected to one end of the stop rod (4). One end of the spring (52) is in contact with the rotating seat (54), and the other end is in contact with the retaining ring (53).

4. The combined anti-loosening nut according to claim 3, characterized in that, The outer end of the circular cylinder (3) is connected to a circular baffle (6), which is suitable for preventing the rotating seat (54) from detaching from the circular cylinder (3).

5. The combined anti-loosening nut according to claim 1, characterized in that, The connector (24) includes a ring array of limiting grooves (241) arranged on the outer circle of the plastic circular plate (22). The limiting grooves (241) do not penetrate the plastic circular plate (22). Insertion blocks (242) are respectively provided in the limiting grooves (241), and the insertion blocks (242) are connected to the inner circle of the outer ring body (21).

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