Hexagonal flange face locking nut for metal insert

Abstract

The utility model belongs to the field of fasteners, and provides a metal insert hexagonal flange face locking nut which comprises a body and an annular elastic piece. Wherein an internal thread is formed on the body; the annular elastic piece is connected to the tail end face, in the advancing direction of the internal thread, of the body and is coaxial with the internal thread, a protruding part capable of being embedded between target external thread teeth is formed on the edge of the inner side of the annular elastic piece, and the protruding part inclines to the reference plane of the internal thread and extends in the direction away from the center of the body.

Description

Technical Field

[0001] The present application belongs to the field of fasteners, and more specifically, relates to a metal insert hexagonal flange locking nut. Background Art

[0002] Traditional nuts are key components for fastening mechanical parts and are widely used in various industrial equipment and devices. However, in actual use, since mechanical equipment is often affected by various external factors such as vibration, impact, and temperature changes, the connection between nuts and bolts often becomes loose or even falls off. This falling off will not only lead to a decline in equipment performance, but may also cause serious safety accidents and damage to personnel and property. Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a metal insert hexagonal flange locking nut to solve the technical problem that the nut is easy to fall off in the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is to provide a metal insert hexagonal flange face locking nut, comprising:

[0005] A body, forming an internal thread;

[0006] An annular spring piece is connected to the end surface of the body along the advancing direction of the internal thread and is coaxial with the internal thread. The inner edge of the annular spring piece forms a protrusion that can be embedded between the target external thread teeth. The protrusion is inclined to the reference plane of the internal thread and extends in a direction away from the center of the body.

[0007] Optionally, the protrusion is parallel to the guiding flank of the internal thread along its own advancing direction.

[0008] Optionally, when the body is screwed into the external thread, the front end of the protrusion abuts against the following tooth side of the external thread tooth.

[0009] Optionally, at least two of the protrusions are symmetrically arranged with respect to the central axis of the annular elastic sheet and are spaced apart.

[0010] Optionally, a side of the protrusion away from the body forms a sawtooth-shaped anti-loosening tooth.

[0011] Optionally, the front tooth side angle of the anti-loosening tooth in the tightening direction of the internal thread is greater than the rear tooth side angle.

[0012] The beneficial effect of the metal insert hexagonal flange locking nut provided in the present application is that: compared with the prior art, the annular spring piece connected to the main body in the present application forms a protrusion, and the protrusion can be embedded between the teeth of the target external thread during the process of the main body being screwed together through the internal thread and the external thread. Since the protrusion is inclined to the reference plane of the internal thread and extends in a direction away from the center of the main body, the protrusion can abut against the teeth of the target external thread when the main body withdraws from the target external thread. In this way, the main body needs to overcome the friction between the annular spring piece and the target external thread before it can withdraw from the target external thread. Therefore, the main body can be effectively prevented from falling off the target external thread, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 A schematic diagram of the overall structure of a metal insert hexagonal flange locking nut provided in an embodiment of the present application;

[0015] Figure 2 A top view of the overall structure of a metal insert hexagonal flange locking nut provided in an embodiment of the present application;

[0016] Figure 3 For along Figure 2 The cross-sectional structure diagram along the AA line;

[0017] Figure 4 A schematic diagram of the overall structure of the annular shrapnel provided in the embodiment of the present application;

[0018] Figure 5 This is a schematic diagram of the connection between the metal insert hexagonal flange locking nut and the bolt of the present application;

[0019] Figure 6 for Figure 3 A partial enlarged view of point B in the middle;

[0020] Figure 7 for Figure 5 A partial enlarged view of point C in the middle.

[0021] Among them, the figure marks in the figure are: 100, main body; 101, internal thread; 200, annular spring piece; 201, raised portion; 202, anti-loosening tooth; 2021, front tooth side angle; 2022, rear tooth side angle; 300, bolt; 1011, leading tooth side; 301, following tooth side. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] Please also read Figures 1 to 7 Now, a metal insert hexagonal flange locking nut provided in an embodiment of the present application is described. The metal insert hexagonal flange locking nut comprises a body 100 and an annular spring piece 200. Among them:

[0027] The body 100 forms an internal thread 101, and the annular spring piece 200 is connected to the end face of the body 100 along the advancing direction of the internal thread 101 and is coaxial with the internal thread 101. The inner edge of the annular spring piece 200 forms a protrusion 201 that can be embedded between the teeth of the target external thread. The protrusion 201 is inclined to the reference plane of the internal thread 101 and extends in a direction away from the center of the body 100. It can be understood that the annular spring piece 200 and the body 100 can adopt a riveting connection method in the technical field, that is, a ring-shaped protrusion is pre-arranged on the body 100, and after the annular spring piece 200 is installed, the protrusion is pressed down so that the annular spring piece 200 is riveted to the end face of the body 100. The annular spring piece 200 is made of 65Mn spring steel by stamping and heat-treated. In this embodiment, the target external thread can be set on a bolt 300, a screw rod, and a screw rod commonly used in the art. For the convenience of description, the bolt 300 is used as an example for description in this embodiment.

[0028] According to the above structure provided in this embodiment, the protrusion 201 can be embedded between the teeth of the target external thread during the process of the main body 100 being screwed together with the internal thread 101 and the external thread. Since the protrusion 201 is inclined to the reference plane of the internal thread 101 and extends in a direction away from the center of the main body 100, when the main body 100 withdraws from the target external thread, the protrusion 201 abuts against the teeth of the target external thread, and under the action of the friction force generated by the abutment, the protrusion 201 deforms in the opposite direction of the withdrawal of the main body 100, so that both sides of the protrusion 201 are in contact with the teeth of the target external thread. The adjacent two sides of the teeth abut against each other. At the same time, since the diameter formed by the raised portion 201 becomes smaller when the raised portion 201 is reversely deformed and expanded as mentioned above, it abuts against the adjacent two sides of the teeth of the target external thread more tightly, generating a greater friction force. In this way, the main body 100 needs to overcome the friction force between the annular spring piece 200 and the target external thread before it can be withdrawn from the target external thread. Therefore, the main body 100 can be effectively prevented from falling off the target external thread. When the main body 100 is screwed into the bolt 300, since only one side of the raised portion 201 contacts the teeth of the target external thread, it can be easily screwed in, which is far superior to the prior art.

[0029] In another embodiment of the present application, please refer to Figures 1 to 7 , the raised portion 201 is parallel to the leading flank 1011 of the internal thread 101 along its own advancing direction. According to the above structure provided in this embodiment, when the body 100 is screwed onto the target external thread through the internal thread 101, since the raised portion 201 is parallel to the leading flank 1011 of the internal thread 101, the internal thread 101 can be smoothly screwed onto the target external thread; and when the body 100 is withdrawn from the target external thread, the raised portion 201 can be tightly pressed against the target external thread and achieve the anti-falling effect of the metal insert hexagonal flange face locking nut in this embodiment.

[0030] In another embodiment of the present application, please refer to Figures 1 to 7 When the body 100 is screwed into the external thread, the front end of the protrusion 201 abuts against the following tooth flank 301 of the external thread teeth. According to the above structure provided in this embodiment, since the front end of the protrusion 201 abuts against the following tooth flank 301 of the external thread teeth when screwing in, that is, when the body 100 is screwed into the bolt 300, since only one side of the protrusion 201 contacts the teeth of the target external thread, the body 100 can be easily screwed into the bolt 300, which is conducive to further improving the labor-saving effect of the metal insert hexagonal flange face locking nut provided in this embodiment during installation.

[0031] In another embodiment of the present application, please refer to Figures 1 to 7 , at least two protrusions 201 are symmetrically arranged with respect to the central axis of the annular spring piece 200 and are arranged at intervals. According to the above structure provided in this embodiment, through the at least two symmetrically arranged protrusions 201, the annular spring piece 200 can more fully abut against the target external thread, which is conducive to further improving the anti-falling effect of the metal insert hexagonal flange face locking nut provided in this embodiment. In addition, the interval between the protrusions 201 is not only conducive to reducing the weight of the metal insert hexagonal flange face locking nut in this embodiment, but also conducive to the full deformation of the annular spring piece 200, which is conducive to the annular spring piece 200 being able to abut against the target external thread more fully.

[0032] In another embodiment of the present application, please refer to Figures 1 to 7 , a sawtooth-shaped anti-loosening tooth 202 is formed on the side of the protrusion 201 away from the body 100. According to the above structure provided in this embodiment, the anti-loosening tooth 202 formed on the protrusion 201 can be more tightly engaged with the target external thread when the body 100 has a reverse loosening tendency, which is conducive to further improving the friction between the protrusion 201 and the target external thread, thereby further improving the anti-dropping effect of the metal insert hexagonal flange face locking nut provided in this embodiment.

[0033] In another embodiment of the present application, please refer to Figures 1 to 7 , the front tooth side angle 2021 of the anti-loosening tooth 202 in the tightening direction of the internal thread 101 is greater than the rear tooth side angle 2022. According to the above structure provided in this embodiment, the friction between the anti-loosening tooth 202 and the external thread when the internal thread 101 is screwed onto the external thread will be smaller than the friction between the anti-loosening tooth 202 and the external thread when the internal thread 101 is withdrawn from the external thread, so the body 100 can be more easily screwed onto the external thread and is difficult to fall off from the external thread, which is conducive to further improving the anti-falling effect of the metal insert hexagonal flange face locking nut in this embodiment.

[0034] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A metal insert hexagonal flange locking nut, characterized in that: include: A body (100) is formed with an internal thread (101); An annular spring piece (200) is connected to the end surface of the body (100) along the advancing direction of the internal thread (101) and is coaxial with the internal thread (101); the inner edge of the annular spring piece (200) forms a raised portion (201) that can be embedded between teeth of the target external thread; the raised portion (201) is inclined to a reference plane of the internal thread (101) and extends in a direction away from the center of the body (100).

2. The metal insert hexagonal flange locking nut according to claim 1, characterized in that: The protrusion (201) is parallel to the guiding tooth side (1011) of the internal thread (101) along its own advancing direction.

3. The metal insert hexagonal flange locking nut according to claim 1, characterized in that: When the body (100) is screwed into the external thread, the front end of the protruding portion (201) abuts against the trailing tooth side (301) of the tooth of the external thread.

4. The metal insert hexagonal flange locking nut according to claim 1, characterized in that: At least two of the protruding portions (201) are symmetrically arranged relative to the central axis of the annular elastic sheet (200) and are spaced apart.

5. The metal insert hexagonal flange locking nut according to any one of claims 1 to 4, characterized in that: A side of the protruding portion (201) away from the main body (100) forms a sawtooth-shaped anti-loosening tooth (202).

6. The metal insert hexagonal flange locking nut according to claim 5, characterized in that: The front tooth side angle (2021) of the anti-loosening tooth (202) in the tightening direction of the internal thread (101) is greater than the rear tooth side angle (2022) of the rear tooth.

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