Thread locking assembly

Abstract

The utility model belongs to the technical field of fasteners, and relates to a thread locking assembly which comprises an outer fixing piece, an inner locking piece, a belleville spring and a fixing base. The outer fixing piece is a hollow cylinder, the bottom of the outer fixing piece is sealed by a fixing base, and the outer fixing piece and the fixing base are detachably connected; the inner locking piece is provided with a threaded through hole a and is defined by two C-shaped grooves with opposite groove openings, and the two C-shaped grooves are marked as a C-shaped groove a and a C-shaped groove b respectively. The inner locking piece is located in the hollow cylinder, and the outer side walls of the C-shaped groove a and the C-shaped groove b are both in sliding connection with the hollow cylinder. The belleville spring is located in the hollow cylinder and located between the inner locking piece and the fixing base, the C-shaped groove a is clamped between the belleville spring and the top wall of the outer fixing piece, and a gap is reserved between the C-shaped groove b and the top wall of the outer fixing piece. The top wall of the outer fixing piece is provided with a through hole allowing a bolt to penetrate into the threaded through hole a. According to the utility model, the bolt and the thread locking component can be in an engaged state, and the bolt cannot rotate, so that the anti-loosening effect is realized.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology and relates to a threaded locking assembly. Background Technology

[0002] In the field of mechanical equipment, threaded connections are widely used due to their simple structure, ease of disassembly, and reusability. However, when the connection force is insufficient, threaded connections are prone to loosening, especially when facing special environmental challenges such as large temperature variations and high-frequency vibrations, where conventional threaded connection methods cannot meet the requirements. These special environments often lead to the loosening of fasteners, thereby affecting the stability and safety of mechanical equipment.

[0003] To address the aforementioned problems, existing technologies have proposed several solutions. For example, patent CN212177631U discloses an anti-loosening nut and an anti-loosening connector. In this patent, the anti-loosening section of the anti-loosening nut has a relief groove that is inserted into a standard nut, creating a squeezing effect on the threads of the standard nut. Under this squeezing effect, the standard nut locks into the bolt. However, this patent has requirements on material strength and thread size, and the resulting deformation is easily recoverable, resulting in low usage frequency.

[0004] Patent CN204828246U discloses an anti-loosening internal thread component and a screw-connection device. This device works by tightening a second external thread component, causing deformation of a portion of the sidewall of the first threaded hole. This deformation, in turn, presses against the first external thread component, thus locking it in place. However, in practical applications, the two nuts are prone to compression deformation, or even jamming, making disassembly impossible and affecting its reliability and durability.

[0005] Therefore, a threaded locking assembly is needed to solve the above problems, which is of great significance. Utility Model Content

[0006] The purpose of this invention is to solve the problems existing in the prior art and to provide a threaded locking assembly.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A threaded locking assembly includes an outer fixing member, an inner locking member, a disc spring, and a fixing base;

[0009] The external fastener is a hollow cylinder, and the bottom of the external fastener is sealed by the fixed base. The two are detachably connected.

[0010] The internal locking component is provided with a threaded through hole a. The internal locking component is surrounded by two C-shaped grooves with opposite openings, which are referred to as C-shaped groove a and C-shaped groove b respectively.

[0011] The inner locking component is located inside the hollow cylinder. The outer walls of C-groove a and C-groove b are slidably connected to the hollow cylinder, and the sliding direction is the axial direction of the threaded through hole a.

[0012] The disc spring is located inside the hollow cylinder and between the inner locking part and the fixed base. The C-shaped groove a is clamped between the disc spring and the top wall of the outer fixing part, and there is a gap between the C-shaped groove b and the top wall of the outer fixing part.

[0013] The top wall of the external fastener is provided with a through hole for the bolt to pass through the threaded through hole a.

[0014] As a preferred technical solution:

[0015] As described above, the external fixing component of the threaded locking assembly is a cylindrical tube.

[0016] As described above, the inner locking component is an internally threaded tube composed of C-shaped groove a and C-shaped groove b.

[0017] As described above, in a threaded locking assembly, the outer walls of C-shaped grooves a and b are respectively provided with slide grooves a and b along the axial direction of the threaded through hole a. The inner wall of the outer fixing member is provided with sliders a and b respectively cooperating with slide grooves a and b along the axial direction of the threaded through hole a. The lengths of sliders a and b are smaller than the length of the outer fixing member, so that a certain space can be left for the deformation of the disc spring.

[0018] The threaded locking assembly described above also includes a bolt a, a threaded through hole b at the bottom of the side wall of the outer fastener, and a circular through hole on the fixed base;

[0019] The fixed base is connected to the external fastener through the cooperation of bolt a, a circular through hole and a threaded through hole b.

[0020] Beneficial effects:

[0021] (1) The threaded locking assembly of this utility model causes the disc spring to deform by tightening the bolt. The force generated by the deformation of the disc spring acts on the C-groove a and C-groove b. Due to the height difference between the two, the forces on both sides of the bolt are unbalanced. This unbalanced state causes the bolt and the threaded locking assembly to form an eccentric lock nut structure, so that the bolt and the threaded locking assembly reach the meshing state and prevent the bolt from turning back, thereby achieving the effect of preventing loosening.

[0022] (2) The threaded locking assembly of this utility model can be easily removed from the locked bolt by simply removing the fixed base 5. There will be no jamming, and the disassembly is convenient.

[0023] (3) The threaded locking assembly of this utility model uses the reverse force generated by the deformation of the disc spring to make the thread fit tightly, which is not easy to loosen and can adapt to different temperature environments. Attached Figure Description

[0024] Figure 1 This is an exploded view of the threaded locking assembly of this utility model;

[0025] Figure 2 This is an assembly diagram of the threaded locking assembly of this utility model;

[0026] Figure 3 This is a schematic diagram showing the positions of C-groove a, C-groove b, disc spring, and fixed base in the threaded locking assembly of this utility model; in the figure, S is the height difference between C-groove a and C-groove b;

[0027] Figure 4 This is a schematic diagram of the internal locking component of this utility model;

[0028] Figure 5 This is a schematic diagram of the external fastener of this utility model;

[0029] Among them, 1-external fixing part, 2-C-shaped groove b, 3-C-shaped groove a, 4-disc spring, 5-fixed base, 6-bolt a, 7-slider b, 8-threaded through hole b, 9-slide groove a. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0031] A threaded locking assembly, such as Figure 1 As shown, it includes an external fixing component 1, an internal locking component, a disc spring 4, a fixing base 5, and a bolt a 6;

[0032] like Figure 1 , Figure 5 As shown, the external fixing part 1 is a cylindrical tube, and a threaded through hole b is opened at the bottom of the side wall of the external fixing part 1. A circular through hole is opened on the fixing base 5.

[0033] The fixed base 5 is connected to the external fastener 1 through the cooperation of bolt a 6, a circular through hole and a threaded through hole b;

[0034] like Figure 4As shown, the internal locking component is an internally threaded tube, consisting of C-shaped groove a 3 and C-shaped groove b 2. The openings of C-shaped groove a 3 and C-shaped groove b 2 form a threaded through hole a. The outer walls of C-shaped groove a 3 and C-shaped groove b 2 are respectively provided with sliding groove a 9 and sliding groove b along the axial direction of the threaded through hole a.

[0035] The inner locking element is located inside the outer fixing element 1, such as... Figure 5 As shown, the inner wall of the external fastener 1 is provided with sliders a and b 7 that respectively cooperate with slide groove a 9 and slide groove b along the axial direction of the threaded through hole a;

[0036] like Figure 2 , Figure 3 As shown, the disc spring 4 is located inside the outer fixing member 1 and between the inner locking member and the fixed base 5. The C-shaped groove a 3 is clamped between the disc spring 4 and the top wall of the outer fixing member 1, and there is a gap between the C-shaped groove b 2 and the top wall of the outer fixing member 1.

[0037] The top wall of the external fastener 1 is provided with a through hole for the bolt to pass through the threaded through hole a.

[0038] The usage process of this locking assembly is as follows: Place this locking assembly according to... Figure 2 After assembly, when locking is required, screw the bolt to be locked into the through hole on the top wall of the outer fastener 1 until the end of the bolt presses against the disc spring 4. To unscrew this locking assembly from the locked bolt, first unscrew bolt a6, remove the fixing base 5 to release the stress on the disc spring 4, and then unscrew the remaining part of the locking assembly in the opposite direction.

Claims

1. A threaded locking assembly, characterized in that, It includes an external fixing component (1), an internal locking component, a disc spring (4), and a fixed base (5); The outer fastener (1) is a hollow cylinder, and the bottom of the outer fastener (1) is closed by the fixed base (5). The two are detachably connected. The inner locking part is provided with a threaded through hole a. The inner locking part is surrounded by two C-shaped grooves with opposite openings, which are respectively denoted as C-shaped groove a (3) and C-shaped groove b (2). The inner locking part is located inside the hollow cylinder. The outer walls of C-groove a(3) and C-groove b(2) are slidably connected to the hollow cylinder, and the sliding direction is the axial direction of the threaded through hole a. The disc spring (4) is located inside the hollow cylinder and between the inner locking member and the fixed base (5). The C-shaped groove a (3) is clamped between the disc spring (4) and the top wall of the outer fixing member (1). There is a gap between the C-shaped groove b (2) and the top wall of the outer fixing member (1). The top wall of the external fastener (1) is provided with a through hole for the bolt to pass through the threaded through hole a.

2. A threaded locking assembly according to claim 1, characterized in that, The external fastener (1) is a cylindrical tube.

3. A threaded locking assembly according to claim 1, characterized in that, The internal locking component is an internally threaded tube composed of C-shaped groove a(3) and C-shaped groove b(2).

4. A threaded locking assembly according to claim 1, characterized in that, The outer walls of C-groove a (3) and C-groove b (2) are respectively provided with slide groove a (9) and slide groove b along the axial direction of threaded through hole a. The inner wall of the outer fastener (1) is provided with slider a and slider b (7) respectively cooperating with slide groove a (9) and slide groove b along the axial direction of threaded through hole a.

5. A threaded locking assembly according to claim 1, characterized in that, It also includes bolt a (6), a threaded through hole b is provided at the bottom of the side wall of the external fastener (1), and a circular through hole is provided on the fixed base (5); The fixed base (5) is connected to the external fastener (1) by means of bolt a (6), a circular through hole and a threaded through hole b.

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