Novel locknut

Abstract

The utility model provides a novel locknut which comprises a nut body and a plurality of clamping pieces evenly distributed on the end face of the nut body in the circumferential direction of the nut body, the middle of each clamping piece is an arching part, and when the arching parts are pressed, the inner ends of the clamping pieces extend into threaded holes of the nut body and are used for being connected to external threads of a bolt in a clamped mode. The outer end of the clamping piece is integrally arranged on an inner ring of the annular body, the annular body is attached to and fixedly connected with the end face of the nut, and the inner end of the clamping piece is provided with an acute-angle corner and used for being cut into external threads of the bolt when the nut is screwed out of the bolt. The clamping piece is integrated on the inner ring of the annular body, and the annular body is attached to and fixedly connected to the nut, so that radial constraint on the clamping piece is increased, the fixing effect of the clamping piece on the nut is improved, and the nut is effectively prevented from loosening and the stability of the anti-loosening function of the nut is guaranteed in cooperation with an acute angle corner capable of being cut into a bolt.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nut, concretely relates to a novel locknut. BACKGROUND

[0002] The nut is screwed together with the bolt or screw rod to be used as a part for fastening, and the fastening effect is realized by the cooperation of the nut and the bolt or screw rod during use, wherein the fastening effect is mainly generated by the friction force between the nut and the surface of the part, and if the surface is relatively smooth, the nut is prone to loosening during long-term use, which results in poor fastening effect and even affects the normal operation of the part. The publication number CN205136307U discloses a lock flange nut, one end of the card is fixedly connected with the nut, the other end is used for clamping the threaded part of the bolt, and the action force between the card and the bolt is lifted through the arch part in the middle of the card; during use, the stability of the lock function is poor due to the poor structural strength of the card and the poor fixing effect between the card and the nut, and the lock function is prone to failure. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a novel locknut, which aims to ensure the stability of the lock function.

[0004] A novel locknut comprises a nut and a plurality of cards uniformly distributed on the end face of the nut in the circumferential direction, the middle part of the card is an arch part, when the arch part is pressed, the inner end of the card extends into the threaded hole of the nut, is used for clamping the outer thread of the bolt, the outer end of the card is integrally arranged on the inner ring of the annular body, the annular body is attached to and fixedly connected with the end face of the nut, and the inner end head of the card is provided with a sharp corner and is used for cutting into the outer thread of the bolt when the nut is screwed out of the bolt.

[0005] Further, the side surface of the card connected with the sharp corner is a V-shaped surface or an arc surface.

[0006] Further, a boss is integrally arranged on the position close to the sharp corner on the side surface of the card.

[0007] Further, the other corner of the inner end head of the card is an obtuse corner or a round corner.

[0008] Further, the inner end and the outer end of the card form a V-shaped structure, and the opening of the V-shaped structure faces the end face of the nut.

[0009] Further, the inner end face of the card is an arc surface and is concentrically arranged with the inner ring of the nut, and the inner end head of the card is close to the hole opening of the inner ring of the nut.

[0010] Further, the outer ring of the annular body is matched with and coincides with the outer ring of the nut.

[0011] Further, the card is made of stainless steel and has a hardness greater than the nut.

[0012] Further, the number of the cards is at least 5.

[0013] The utility model discloses the beneficial effect: the card is integrated on the inner ring of annular body, and the annular body is pasted and fixedly connected on the nut, thereby increasing the radial constraint to card, and the fixed effect of card on the nut is promoted, and cooperate the acute angle edge that can cut into the bolt, thereby effectively prevent the nut loosening, guarantee its stability of anti-loose function. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the first embodiment in the utility model;

[0015] Figure 2 It is the structural schematic diagram of the second embodiment in the utility model;

[0016] Figure 3 It is the structural schematic diagram of the third embodiment in the utility model. DETAILED DESCRIPTION

[0017] The utility model will be described in detail below in combination with the drawings. The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as a limitation on the utility model. The left, middle, right, up, down and other directions in the embodiments of the utility model are only relative concepts or are referenced to the normal use state of the product, and should not be considered as limiting.

[0018] First embodiment:

[0019] A novel lock nut, such as Figure 1As shown, the nut 3 and a plurality of clamping pieces 2 are uniformly distributed on the end face of the nut 3 in the circumferential direction, the number of the clamping pieces 2 is at least 5, the clamping pieces 2 are made of stainless steel and have a hardness greater than that of the nut 3, the middle part of each clamping piece 2 is an arch part 22, when the arch part 22 is pressed, the inner end of the clamping piece 2 extends into the threaded hole of the nut 3 and is used for clamping the outer thread of the bolt, the outer end of the clamping piece 2 is integrally arranged on the inner ring of the annular body 1, the outer ring of the annular body 1 matches and coincides with the outer ring of the nut 3, the end face of the annular body 1 is attached to and fixedly connected with the end face of the nut 3, specifically by welding, the inner end of the clamping piece 2 is provided with an acute angle corner 21 and is used for cutting into the outer thread of the bolt when the nut 3 is rotated out of the bolt, the other corner of the inner end of the clamping piece 2 is a round corner 24, the inner end face of the clamping piece 2 is a curved surface and is arranged concentrically with the inner ring of the nut 3, the inner end of the clamping piece 2 is close to the through hole of the inner ring of the nut 3, the inner end of the clamping piece 2 is in contact with the end face of the nut 3 after extension, thereby providing support for the clamping piece 2 and facilitating the cutting of the acute angle corner 21 into the outer thread of the bolt, thereby achieving clamping with the outer thread of the bolt.

[0020] As shown, the side of the clamping piece 2 connected with the acute angle corner 21 is a V-shaped surface, thereby increasing the acting force between the clamping piece 2 and the bolt, and the inner end and the outer end of the clamping piece 2 form a V-shaped structure, the opening of the V-shaped structure faces the end face of the nut 3, and the middle part of the V-shaped structure arches away from the end face of the nut 3, thereby forming an arch part and improving the acting force between the inner end and the outer end of the clamping piece 2.

[0021] In operation, the nut 3 is screwed onto the bolt, and the clamping piece 2 faces the workpiece to be fixed, after the arch part 22 contacts the workpiece, the arch part 22 is deformed by 0.5-2mm in the gap between the nut 3 and the workpiece, the inner end of the clamping piece 2 extends and exerts pressure on the outer thread of the bolt, until the nut 3 is screwed to the end. When the nut 3 is loosened in the reverse direction, the acute angle corner 21 cuts into the outer thread of the bolt and positions the nut 3, thereby preventing the nut 3 from continuing to rotate in the reverse direction.

[0022] Second embodiment:

[0023] Other technical features are the same as those of the first embodiment, and as shown in Figure 2 As shown, the side of the clamping piece 2 connected with the acute angle corner 21 is a curved surface, and the other corner of the inner end of the clamping piece 2 is an obtuse angle corner 25.

[0024] Third embodiment:

[0025] Other technical features are the same as those of the first embodiment, and as shown in Figure 3As shown, the card 2 side near the acute angle corner 21 position integrated with the boss 26, when the acute angle corner 21 cut into the bolt on the side of the card 2 form cutting, the boss 26 can form a block to the cutting, thereby reducing the acute angle corner 21 cut into the bolt depth, and further reduce the loose corner of the nut 3.

[0026] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel anti-loosening nut, comprising a nut and a plurality of clips evenly distributed around its circumference on its end face, wherein the center of each clip is an arched portion, and when the arched portion is pressed, the inner end of the clip extends into the threaded hole of the nut for engaging with the external thread of the bolt, characterized in that: The outer end of the card is integrally arranged on the inner ring of the annular body, the annular body is attached to and fixedly connected with the end face of the nut, and the inner end of the card is provided with an acute corner which is used to cut into the external thread of the bolt when the nut is screwed off the bolt.

2. A new lock nut as claimed in claim 1, wherein: The side surface of the card connected with the acute corner is a V-shaped surface or an arc surface.

3. A new style lock nut as claimed in claim 2, wherein: A boss is integrally arranged on the side surface of the card close to the acute corner.

4. The new style lock nut according to claim 1, characterized in that: The other corner of the inner end of the card is an obtuse corner or a round corner.

5. The new style lock nut according to claim 1, characterized in that: The inner end and the outer end of the card form a V-shaped structure, and the opening of the V-shaped structure faces the end face of the nut.

6. The new style lock nut according to claim 1, characterized in that: The inner end surface of the card is an arc surface and is arranged concentrically with the inner ring of the nut, and the inner end of the card is close to the through hole of the inner ring of the nut.

7. The new style lock nut according to claim 1, characterized in that: The outer ring of the annular body matches and coincides with the outer ring of the nut.

8. The new style lock nut according to claim 1, characterized in that: The card is made of stainless steel and has a hardness greater than that of the nut.

9. The new style lock nut according to claim 1, characterized in that: The number of the cards is at least 5.

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