Flange face nut

Abstract

The utility model discloses a flange face nut which comprises a nut body, the nut body comprises a force application boss, a flange portion and an extension portion from top to bottom, the extension portion comprises a cavity and a threaded cavity which are communicated with each other, and the end, away from the threaded cavity, of the cavity penetrates through the flange portion and extends to the top face of the force application boss. The flange part is provided with the force bearing boss, so that the pressure concentration phenomenon on the flange part is reduced, the torque transmission area is increased, the extension part is screwed into a part needing to be fastened, and the threaded cavity is connected with the fastening screw in a fastened mode. According to the flange face nut, the cavity is formed in the nut body, and the thread part of a common flange face nut is moved downwards to the needed position, so that a screw does not need to stretch out of the nut when the flange face nut is used, the occupied space of the screw on the lower portion of the nut is reduced, the requirement for the length of the fastening screw is lowered, and the cost is reduced. For some parts with shorter fastening screws, the short length can be complemented by using the flange face nut disclosed by the utility model, so that the use scene is widened.

Description

Technical Field

[0001] This utility model relates to the field of flange nut technology, and in particular to a flange nut that can compensate for insufficient screw length. Background Technology

[0002] Screw and nut fastening is a common fastening connection method. In this type of fastening connection, the screw length needs to be 1 to 2 mm longer than the thickness of the fastened part plus the thickness of the nut in order to achieve a good fastening. This places high demands on the screw length. When the total thickness of the fastened part plus the conventional nut is greater than the screw length, fastening cannot be performed. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a flange nut that can relax the requirements for screw length for fastening.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A flange nut includes a nut body, which from top to bottom includes a force-applying boss, a flange portion, and an extension portion. The extension portion includes a cavity and a threaded cavity that are interconnected. One end of the cavity away from the threaded cavity extends through the flange portion to the top surface of the force-applying boss. When tightened, the extension portion is screwed into the component to be tightened, and the threaded cavity is tightly connected to a fastening screw.

[0006] In a preferred embodiment, the force-applying boss, flange, and extension are integrally formed structures.

[0007] In a preferred embodiment, the outer side of the force-applying boss is hexagonal.

[0008] In a preferred embodiment, the extension is cylindrical.

[0009] In a preferred embodiment, the outer diameter of the extension is 1.5 times the outer diameter of the fastening screw thread, and the length of the extension is the thickness of the component to be fastened.

[0010] In a preferred embodiment, the inner diameter of the cavity is larger than the inner diameter of the threaded cavity.

[0011] In a preferred embodiment, the vertical projection surface of the cavity is circular.

[0012] In a preferred embodiment, the thread length of the threaded cavity is equal to the minimum length required for the fastening screw to tighten the fastening component.

[0013] In a preferred embodiment, after tightening, the threads of the fastening screw extend 2-3 turns out of the cavity.

[0014] The beneficial effects of this utility model are:

[0015] 1. The flange nut of this utility model has a cavity inside the nut body, which moves the threaded part of the common flange nut downward to the required position. Therefore, when using the flange nut of this utility model during assembly, the screw no longer needs to protrude out of the nut, reducing the space occupied by the fastening screw on the lower part of the nut and relaxing the requirements for the screw length. In this way, some parts with short fastening screws can make up for the missing length by using the flange nut of this utility model, thus expanding the application scenarios.

[0016] 2. The flange is equipped with an external hexagonal force-applying boss to reduce pressure concentration on the flange, reduce the risk of wear or deformation caused by excessive force on the flange, increase the torque transmission area, make it easier to apply force to the flange nut and transmit torque to the fastening screw, and facilitate operation with tools. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the flange nut of this utility model;

[0019] Figure 2 This is a cross-sectional view of the flange nut of this utility model;

[0020] Figure 3 This is a schematic diagram of the flange nut assembly of this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of part A. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0023] It should be noted that when a component is referred to as being "mounted" on another component, it can be directly on the other component or there may be an intervening component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may be an intervening component. The terms "first," "second," "inner," "outer," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] See Figures 1 to 4 An embodiment of a flange nut includes a nut body, which from top to bottom includes a force-applying boss 1, a flange portion 2, and an extension portion 3. The extension portion 3 includes a cavity 31 and a threaded cavity 32 that are interconnected. One end of the cavity 31 passes through the flange portion 2 and extends to the top surface of the force-applying boss 1. When tightening, the extension portion 3 is screwed into the component 5 that needs to be tightened, and the threaded cavity 32 is tightly connected to the fastening screw 4.

[0026] In this embodiment, the flange portion 2 of the flange nut increases the contact area between the flange nut and the fastening component 5, preventing slippage and loosening. The force-applying boss 1 on the flange portion 2 reduces pressure concentration during the screwing of the flange nut into the fastening component 5, lowering the risk of wear or deformation due to excessive force on the flange portion 2. It also increases the torque transmission area, making it easier to apply force to the flange nut and transmit torque to the fastening screw 4, and facilitating operation with various tools. The extension portion 3, by providing a cavity 31, moves the threaded portion of a common flange nut downwards to the desired position, thus facilitating assembly (see...). Figure 3-4 In specific implementation, the fastening component 5 needs to be fastened to the component 6 with the fastening screw 4. If the length of the fastening screw 4 is insufficient, a through hole matching the extension part 3 of the flange nut is opened in the fastening component 5. The flange part 2 of the flange nut is screwed into the through hole with the extension part 3 facing outwards from the fastening component 5 and the extension part 3 facing inwards from the fastening component 5, so that the threaded cavity 32 of the extension part 3 is fastened to the fastening screw 4. In this way, the insufficient length of the fastening screw 4 is supplemented by the cavity, and the fastening component 5 and the component 6 with the fastening screw 4 can be well fastened without protruding out of the nut. That is, by using the flange nut, the fastening screw 4 can be well fastened without protruding out of the nut, reducing the space occupied by the screw on the lower part of the nut and relaxing the requirements for the length of the screw.

[0027] In this embodiment, the force-applying boss 1, the flange 2, and the extension 3 are integrally formed structures.

[0028] The force-applying boss 1 serves as both the force-applying and torque-transmitting component. In one specific implementation, the outer side of the force-applying boss 1 is hexagonal. This hexagonal design provides a larger torque-transmitting area, reduces pressure per unit area, lowers torque loss, and improves the efficiency and stability of torque transmission. This enhances the torque-transmitting capacity of the nut. The torque is transmitted to the fastening screw 4 through the flange 2, resulting in a better tightening effect and enabling the nut to more effectively resist loosening when subjected to external force. It should be noted that the force-applying boss 1 can also be of other types, such as circular or cap-shaped.

[0029] In one specific implementation, the extension 3 is cylindrical, so the corresponding through hole on the fastening component 5 is also a circular through hole, which makes it easy to make holes and assemble.

[0030] The outer diameter of the extension 3 is 1.5 times the outer diameter of the thread of the fastening screw 4, and the length of the extension 3 is the thickness of the component 5 to be fastened. That is, after assembly, it is equivalent to increasing the length and width of the contact between the insufficiently long fastening screw 4 and the component 5 to be fastened, thereby increasing the contact area between the fastening screw 4 and the component 5 to be fastened, providing better load-bearing capacity for the fastening screw 4, and effectively preventing the fastening screw 4 from loosening when under force.

[0031] To provide the necessary assembly clearance for the fastening screw 4 to screw into the threaded cavity 32, the cavity 31 is designed as a circular cavity with an inner diameter larger than that of the threaded cavity 32. This facilitates correct assembly, reduces screwing resistance, and protects the threads of the fastening screw 4 and the threaded cavity 32 from damage. It should be noted that the cavity 31 can also be any other shape depending on the assembly requirements.

[0032] In one specific implementation, the thread length of the threaded cavity 32 is equal to the minimum length required for the fastening screw 4 to lock the fastened component 5. If the thread length of the threaded cavity 32 is too long, the fastening screw 4 cannot fully enter the threaded cavity 32 during tightening, resulting in an unreliable tightening. If the thread length of the threaded cavity 32 is too short, the fastening screw 4 protrudes too far out of the cavity 31 after tightening, which may cause it to be subjected to additional stress.

[0033] In one specific implementation, after tightening, the thread of the fastening screw 4 protrudes 2-3 turns into the cavity 31. This ensures that the fastening screw 4 passes through the threaded cavity 32 after tightening, avoiding a reduction in the thread and tightening strength due to a small number of thread turns participating in the force, thus improving the anti-loosening effect. It also avoids reducing the assembly accuracy due to too many turns of the fastening screw 4 protruding into the cavity 31.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A flange face nut comprising a nut body, characterized in that, The nut body comprises a force applying boss, a flange part and an extension part from top to bottom, the extension part comprises a cavity and a threaded cavity which are communicated with each other, one end of the cavity away from the threaded cavity extends through the flange part to the top surface of the force applying boss, the extension part is screwed into the part to be fastened, and the threaded cavity is fastened with a fastening screw.

2. The flange face nut of claim 1, wherein, The force applying boss, the flange part and the extension part are integrally formed.

3. The flange face nut of claim 1, wherein, The outer side of the force applying boss is hexagonal.

4. The flange face nut of claim 1, wherein, The extension part is cylindrical.

5. The flange face nut of claim 4, wherein, The outer diameter of the extension part is 1.5 times of the outer diameter of the fastening screw thread.

6. The flange face nut of claim 5, wherein, The length of the extension part is the thickness of the part to be fastened.

7. The flange face nut of claim 1, wherein The inner diameter of the cavity is larger than the inner diameter of the threaded cavity.

8. The flange face nut of claim 1, wherein, The vertical projection surface of the cavity is circular.

9. The flange face nut of claim 1, wherein, The thread length of the threaded cavity is equal to the minimum length required for the fastening screw to lock the part to be fastened.

10. The flange face nut of claim 1, wherein, After fastening, the fastening screw thread protrudes out of the cavity by 2-3 turns.

Images