Nut mounting assembly capable of never loosening

Abstract

The utility model discloses a never-loose nut installation assembly, which comprises a lower nut and an upper nut, the lower nut and the upper nut are screwed on a bolt part, a circular truncated cone is arranged on the lower nut in a protruding way, a groove is arranged on the circular truncated cone, a retaining block is arranged in the groove, and a circular hole matched with the circular truncated cone in a clamping way is arranged at the bottom of the upper nut. The locking device is scientific and reasonable in structural design, when the upper nut is installed and screwed downwards, the recessed inner wall of the upper nut extrudes the retaining block, and at the moment, the retaining block is extruded by the inner ring of the upper nut to rotate by an angle along with the upper nut; due to the fact that the circumference formed by the short edge and the circle center of the non-locking block in the unlocked state exceeds the diameter of the inner ring of the upper nut, when the upper nut is screwed down, center deviation is generated between the upper nut and the bolt, first force for locking the screw rod is generated, and therefore the good anti-loosening effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut assembly equipment technical field, concretely is a kind of never loose nut mounting assembly. BACKGROUND

[0002] Bolt nut is commonly used fastener, usually because vibration nut will be loose, nut loosens or falls, possibly cause serious consequences, therefore, how to prevent nut loosening, it is also one of the problems of the industry to solve, among them, Japan's hard lock "never loose nut" made outstanding achievements in this regard, rely on convex, concave two nuts work together, among them, convex nut adopts eccentric machining when manufacturing, concave nut is normal center circular machining, when two convex concave nuts are screwed together, like wedge inserted in nut, to realize the effect of anti-loosening.It solves the problem of preventing nut loosening, but its defect is, due to the eccentric design of convex nut, the point contact between the thread of convex nut and the thread of bolt, the contact is not close, the stress is uneven, therefore its requirement on material and manufacturing is very high, to achieve the effect of anti-loosening, also lead to the high price of this nut, the use cost of user is high, poor practicability.Therefore, we propose a kind of never loose nut mounting assembly. SUMMARY

[0003] The utility model discloses a kind of never loose nut mounting assembly, to solve the problem raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of never loose nut mounting assembly, including lower nut and upper nut, the lower nut and upper nut are screwed on bolt part, the lower nut is provided with circular table protruding on, the circular table is provided with recess, and recess is provided with stopper block, the bottom of the upper nut is provided with the circular hole of circular table clamping cooperation.

[0005] In the above scheme, the bottom of the bolt part is provided with base.

[0006] In the above scheme, the middle part of the lower nut and upper nut is provided with thread groove.

[0007] In the above scheme, the height of the circular table is 2mm, and the diameter of the circular table is 27mm.

[0008] In the above scheme, the diameter of the circular hole is 27.5mm, and the height of the circular hole is 2.5mm.

[0009] In the above scheme, the bolt part is fixedly connected with base.

[0010] In the above scheme, the maximum rotation angle of the stopper block is 30 degrees.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the never-loose nut mounting assembly has simple and reasonable structure design and strong practicability, the upper nut is recessed into the lower nut and extrudes the retreat-stop block, the retreat-stop block is extruded by the inner circle of the upper nut and rotates by an angle along with the upper nut, because the short side of the retreat-stop block in the unlocked state and the circumference formed by the center have exceeded the diameter of the inner circle of the upper nut, the upper nut and the bolt have a central deviation when the upper nut is tightened, a first locking force of the screw rod is generated, the upper and lower nuts generate an axial force in the opposite direction when the upper nut is completely tightened with the lower nut, a second locking force of the screw rod is generated, and good anti-loose effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a bolt part connecting structure schematic view of the utility model.

[0013] Figure 2 It is an upper nut structure sectional view schematic view of the utility model.

[0014] Figure 3 It is a retreat-stop block unlocked structure schematic view of the utility model.

[0015] Figure 4 It is a retreat-stop block locked structure schematic view of the utility model.

[0016] Figure 5 It is a bolt part connecting structure schematic view of the utility model. Figure 3 It is a structure schematic view of A place in the utility model.

[0017] Figure 6 It is a structure schematic view of B place in the utility model. Figure 4 It is a structure schematic view of B place in the utility model.

[0018] In the drawing: 1, lower nut 11, circular table 12, bolt part 13, recess 14, retreat-stop block 15, base 16, upper nut 17, thread groove 18, circular hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figures 1-6The utility model provides a technical scheme: a never loose nut mounting assembly, including lower nut 1 and upper nut 16, lower nut 1 and upper nut 16 are screwed on bolt part 12, the lower nut 1 is provided with the circular table 11 in convex, the circular table 11 is provided with recess 13, and the recess 13 is provided with the stop block 14, the bottom of upper nut 16 is provided with the round hole 18 of the circular table 11 clamping cooperation.

[0021] In the above scheme, the bottom of the bolt part 12 is provided with a base 15.

[0022] In the above scheme, the middle part of the lower nut 1 and the upper nut 16 is provided with a threaded groove 17.

[0023] In the above scheme, the height of the circular table 11 is 2mm, and the diameter of the circular table 11 is 27mm.

[0024] In the above scheme, the inner hole diameter of the round hole 18 is 27.5mm, and the height of the round hole 18 is 2.5mm.

[0025] In the above scheme, the bolt part 12 is fixedly connected with the base 15.

[0026] In the above scheme, the maximum rotation angle of the stop block 14 is 30 degrees.

[0027] Working principle:

[0028] The never loose nut mounting assembly is forged with a circular table 11 with a diameter of 27 and a height of 2mm when forging the lower nut 1, and a recess 13 is formed on one side of the circular table 11. Figure 1 When the upper nut 16 is installed and tightened, the inner wall of the recess with a diameter of 27.5 and a depth of 2.5 of the recess into which the upper nut 16 is recessed extrudes the stop block 14, and at this moment, the stop block is extruded by the inner circle of the upper nut 16 and rotates an angle (at most 30°) with the upper nut 16. Because the short side of the stop block 14 in the unlocked state and the circumference formed by the center form a circumference that exceeds the diameter 27.5 of the inner circle of the upper nut 16, the upper nut 16 and the bolt part 12 generate a central deviation when the upper nut 16 is tightened, generating a first locking force on the screw rod. When the upper nut 16 is completely tightened with the lower nut 1, the upper and lower nuts generate an axial force in the opposite direction, which generates a second locking force on the screw rod. Because of the length difference of the two sides of the locking block, the stop block 14 is in a 30° state in the locked state, and the two top ends are extruded by two different circles, so that the long side of the stop block is in a hypotenuse state in the triangular relationship. If the upper nut 16 is rotated in reverse (loosened), the upper nut 16 must be reversed to Figure 3State, because the existence of the above interference phenomenon so a pair of nuts will not loose.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A never-loose nut mounting assembly comprising a lower nut (1) and an upper nut (16), characterized in that: Said lower nut (1) and upper nut (16) are screwed on the bolt part (12), a circular table (11) is arranged on the lower nut (1), a recess (13) is arranged on the circular table (11), and a retreat-stop block (14) is arranged in the recess (13), a circular hole (18) is arranged on the bottom of the upper nut (16) and is matched with the circular table (11).

2. A never-loose nut mounting assembly according to claim 1, wherein: The bottom of the bolt part (12) is provided with a base (15).

3. A never-loose nut mounting assembly as claimed in claim 1, wherein: Threaded grooves (17) are arranged on the middle part of the lower nut (1) and the upper nut (16).

4. A never-loose nut mounting assembly as claimed in claim 1, wherein: The height of the circular table (11) is 2mm, and the diameter of the circular table (11) is 27mm.

5. A never-loose nut mounting assembly as claimed in claim 1, wherein: The inner hole diameter of the circular hole (18) is 27.5mm, and the height of the circular hole (18) is 2.5mm.

6. A never-loose nut mounting assembly as claimed in claim 1, wherein: The bolt part (12) is fixedly connected with the base (15).

7. A never-loose nut mounting assembly as claimed in claim 1, wherein: The maximum rotation angle of the retreat-stop block (14) is 30 degrees.

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