Compression nut

Abstract

The compression nut comprises a nut body, an internal thread section is arranged on the inner side of the nut body, an outer cone coaxial with the nut body is arranged at the upper end of the nut body, the outer diameter of the upper end of the outer cone is smaller than that of the lower end of the outer cone, open grooves are evenly distributed in the upper end of the outer cone in the circumferential direction, and tooth rows are arranged on the inner wall of the outer cone. The tooth rows and the open grooves are staggered, and a pressing ring is arranged on the outer conical surface of the upper end of the outer cone. According to the utility model, the opening at the upper end of the outer cone is contracted, so that the teeth are engaged into the bolt body, and the compression nut is prevented from being loosened due to circumferential rotation.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut technical field, especially point to a kind of compression nut. BACKGROUND

[0002] The existing nut, more through the increase friction pre-tightening to realize anti-loose, under complex working conditions such as severe vibration or long-time vibration, prone to looseness, also increase wedge-shaped block on the side of nut, such as patent document CN206918024U, through the top of wedge-shaped block inside bolt, play the role of anti-loose, but under severe vibration etc. SUMMARY

[0003] The utility model provides a kind of compression nut, by making the opening of outer cone upper end shrink, to make tooth bite into bolt body, prevent compression nut circumferential rotation and cause looseness.

[0004] The utility model discloses a kind of compression nut, including nut body, the inside of nut body is provided with internal thread section, the upper end of nut body is provided with coaxial outer cone, the outer diameter of outer cone upper end is less than lower end, the upper end of outer cone is uniformly distributed with opening slot along circumference, the inner wall of outer cone is provided with tooth array, tooth array is staggered with opening slot, and the outer taper surface of outer cone upper end is provided with compression ring.

[0005] Further, the lower end of outer cone is equal-diameter section, the outside of equal-diameter section is provided with annular first locking slot.

[0006] Further, the outer diameter of outer cone lower end is less than the outer diameter of nut body.

[0007] Further, the inner wall of outer cone is uniformly distributed with tooth array along circumference, and tooth array is alternately arranged with opening slot.

[0008] Further, tooth array includes a plurality of teeth, which are arranged at intervals along the axial direction.

[0009] Further, compression ring is annular protrusion arranged along outer taper surface, and compression ring and outer cone are integrally formed structure.

[0010] The utility model has the advantages that:

[0011] The compression nut of the utility model, when installing, by making the opening of outer cone upper end shrink, to make tooth bite into bolt body, prevent compression nut circumferential rotation and cause looseness, even if there is severe vibration etc. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0013] Figure 1 It is an internal structure diagram of the compression nut;

[0014] Figure 2 It is an external structure diagram of the compression nut;

[0015] Figure 3 It is a use state diagram of the compression nut;

[0016] Figure 4 It is a structure diagram of the locking nut;

[0017] Figure 5 It is a structure diagram of the bolt body;

[0018] Figure 6 It is a structure diagram of the clamping piece.

[0019] Nut body 1, locking nut 2, bolt body 3, internal thread segment 4, external cone 5, open slot 6, tooth 7, compression ring 8, internal taper 9, first locking slot 10, second locking slot 11, clamping piece 12, engagement slot 13. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] As Figure 1 and 2As shown in the figure, a compression nut comprises a nut body, the inner side of the nut body 1 is provided with an internally threaded section 4, the upper end of the nut body 1 is fixed with an outer cone 5 coaxially, and the inner wall of the outer cone 5 is not provided with internal threads. The outer diameter of the upper end of the outer cone 5 is smaller than that of the lower end, the outer diameter of the lower end of the outer cone 5 is smaller than that of the nut body 1, and the upper end of the nut body 1 outside the outer cone 5 is a flat surface. The upper end of the outer cone 5 is circumferentially uniformly distributed with an open slot 6, and the inner wall of the outer cone 5 is circumferentially uniformly distributed with a tooth array, the tooth array and the open slot 6 are alternately arranged, and the tooth array comprises a plurality of teeth 7 fixed at intervals along the axial direction. An outer conical surface on the upper end of the outer cone 5 is provided with a compression ring 8, the compression ring 8 is an annular protrusion arranged along the outer conical surface, and the compression ring 8 is an integral molding structure with the outer cone 5.

[0022] As shown in the figure, Figures 3-5 The compression nut is used in combination with a locking nut 2 and a bolt body 3, the lower end of the locking nut 2 is provided with an inner conical surface 9 matched with the outer cone 5, and the specific use method is as follows: the nut body 1 is screwed on the bolt body 3, then the locking nut 2 is rotated downward along the bolt body 3, when the inner conical surface 9 of the locking nut 2 contacts the compression ring 8, with the downward rotation of the locking nut 2, the opening at the upper end of the outer cone 5 shrinks, and the teeth 7 gradually bite into the outer circle of the bolt body 3, or the bolt body 3 is circumferentially uniformly distributed with a biting slot 13 corresponding to the teeth 7. The opening at the upper end of the outer cone 5 shrinks, and the teeth 7 gradually bite into the biting slot 13 of the bolt body 3.

[0023] As shown in the figure, Figure 1 、 3 , 4 and 6, the outer side of the lower end of the outer cone 5 is provided with a first locking slot 10 in the form of a ring, the inner conical surface 9 is provided with a second locking slot 11 in the form of a ring, and the second locking slot 11 is locked with the first locking slot 10 through a clamping piece 12. The clamping piece 12 is a resilient ring provided with an opening, and the resilient ring is a metal resilient ring. With the continuous downward rotation of the locking nut 2, the clamping piece 12 in the second locking slot 11 enters the first locking slot 10, and the locking nut 2 and the nut body 1 are locked.

[0024] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A compression nut comprising a nut body, an internally threaded section provided on an inner side of the nut body, characterized in that: The upper end of the nut body is provided with an outer taper coaxial with the nut body, the outer diameter of the upper end of the outer taper is smaller than that of the lower end, the upper end of the outer taper is uniformly distributed with an open slot in the circumferential direction, the inner wall of the outer taper is provided with a tooth array, the tooth array is staggered with the open slot, and the outer taper surface of the upper end of the outer taper is provided with a compression ring.

2. A compression nut according to claim 1, wherein: The lower end of the outer taper is a constant diameter section, and the outer side of the constant diameter section is provided with an annular first locking slot.

3. A compression nut according to claim 1 or 2, wherein: The outer diameter of the lower end of the outer taper is smaller than the outer diameter of the nut body.

4. A compression nut according to claim 1 or 2, wherein: The inner wall of the outer taper is uniformly distributed with a tooth array in the circumferential direction, and the tooth array is alternately arranged with the open slot.

5. A compression nut according to claim 1, wherein: The tooth array comprises a plurality of teeth arranged at intervals in the axial direction.

6. A compression nut according to claim 1, wherein: The compression ring is an annular protrusion arranged along the outer taper surface, and the compression ring and the outer taper are an integral molding structure.

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