Anti-falling clamping type nut

Abstract

The utility model discloses an anti-falling clamping type nut which comprises an elastic piece, an elastic shell, an upper-layer inner nut body, a lower-layer inner nut body and a fixing piece. A fixing piece is fixedly connected to the outer wall of one side of the elastic shell, a middle-layer inner nut is fixedly connected to the upper surface of the fixing piece, an upper-layer inner nut is fixedly connected to the upper surface of the middle-layer inner nut, and a first groove hole is formed in the outer wall of one side of the upper-layer inner nut; according to the utility model, a novel inner nut structure is designed, and a step type nut is adopted, specifically, the size of an upper step of the nut is smaller and is used for being clamped into a hole groove of a frame of the cabinet, and the size of a lower step is larger than that of the hole groove, so that the nut cannot be embedded into the hole groove; the inner nut of the clamping type nut does not deform due to the fact that the inner nut bears pressure, the nut outer cavity or the elastic piece deforms, and then the inner nut is disengaged, the fixing effect of the clamping type nut is greatly enhanced, and the performance of the clamping type nut is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, and particularly relates to an anti-dropping snap nut. Background Art

[0002] The snap nut has a high-strength thread fastening function. It is placed into a pre-drilled square hole with a special tool, and then the tool is withdrawn to fix it on metal or other plates. The installation is rapid and convenient, and it can be disassembled and repositioned. It can also be fixed obliquely. The main function of the snap nut is to provide a high-strength thread fastening function and has a self-locking function, which can maintain the fastening force when vibrating or being impacted, preventing the nut from loosening by itself. Its installation process is simple and fast. Using a special tool, it is placed into a pre-drilled square hole, and then the tool is withdrawn to fix it on metal or other plates. It is detachable and can be repositioned, suitable for scenarios such as guide rails and on-site assembly. Through its special structure or design principle, the snap nut can generate additional friction or pressure during thread connection, thereby preventing the thread connection from loosening by itself under vibration or working load. The snap nut usually has a simple structure, is easy to install and use, does not require additional tools or special operating steps, can be quickly and conveniently fixed on the screw rod, and due to the enhanced stability of the thread connection, the snap nut can improve the safety of equipment or structures, avoiding accidents or damages caused by loosening or vibration.

[0003] However, the traditional snap nut cannot meet people's needs and has the following defects: First, there is no new inner nut structure designed. For the snap nut, the inner nut hole diameter is the same. When the snap nut and the matching screw lock the inner and outer frames of the cabinet together, the inner nut of the snap nut will deform the outer cavity or elastic piece of the nut due to the pressure, resulting in the inner nut coming out, greatly reducing the fixing effect of the snap nut. Second, there are no inner nuts of different shapes designed. For the use of the snap nut in different environments, different-shaped inner nuts cannot be used according to environmental restrictions, so that the snap nut cannot be applied to various different environments, reducing the applicability of the snap nut. Summary of the Invention

[0004] The purpose of the utility model is to provide an anti-dropping snap nut to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the utility model provides the following technical solution: An anti-dropping snap nut, including an elastic outer shell, a fixing piece is fixedly connected to the outer wall of one side of the elastic outer shell, a middle inner nut is fixedly connected to the upper surface of the fixing piece, an upper inner nut is fixedly connected to the upper surface of the middle inner nut, a first slot is opened on the outer wall of one side of the upper inner nut, and the first slot is opened on the outer wall of one side of the middle inner nut.

[0006] As a further technical solution of the present utility model, the lower surface of the middle inner nut is fixedly connected with a lower inner nut, and the lower inner nut is sleeved on the fixing piece. A second slot is opened on the outer wall of one side of the lower inner nut.

[0007] As a further technical solution of the present utility model, an upper mounting hole is opened on the upper surface of the elastic housing, and the upper mounting hole is arranged at the top of the first slot.

[0008] As a further technical solution of the present utility model, a nut mounting hole is opened on the outer wall of one side of the fixing piece at a position corresponding to the lower inner nut, and the lower inner nut is sleeved in the nut mounting hole.

[0009] As a further technical solution of the present utility model, a lower mounting hole is opened on the lower surface of the elastic housing, and the lower mounting hole is arranged at the top of the second slot.

[0010] As a further technical solution of the present utility model, a screw hole chamfer is opened on the outer wall of one side of the upper inner nut, and the screw hole chamfer is arranged on the outer wall of one side of the first slot.

[0011] As a further technical solution of the present utility model, a spring piece is fixedly connected to the upper surface of the elastic housing.

[0012] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The present utility model is designed with a novel inner nut structure, adopting a stepped nut. Specifically, the upper step size of the nut is smaller and is used to be stuck into the hole groove of the cabinet frame, and the lower step size is larger than the hole groove size, resulting in that the nut will not be embedded in the hole groove. When the snap nut and the matching screw lock the inner and outer frames of the cabinet together, the inner nut of the snap nut will not cause the outer cavity or the spring piece of the nut to deform due to the pressure, and thus the inner nut will not come out, greatly enhancing the fixing effect of the snap nut and improving the performance of the snap nut. At the same time, different shapes of inner nuts are designed, such as square, triangular, circular, etc. Different shapes of inner nuts can be selected according to the required usage environment to complete the fixing function of the snap nut in different environments, improving the applicability of the snap nut. Moreover, different shapes of snap nuts increase the diversity of the device and increase the customer's purchase interest. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1Schematic three-dimensional structure diagram of the present utility model;

[0015] Figure 2 Schematic three-dimensional structure diagram of the elastic housing of the present utility model;

[0016] Figure 3 Schematic three-dimensional structure diagram of the inner nut of the present utility model;

[0017] Figure 4 Schematic three-dimensional structure diagram of the inner nut from another perspective of the present utility model.

[0018] In the figure: 1. shrapnel; 2. upper layer mounting hole; 3. elastic housing; 4. lower layer mounting hole; 5. middle layer inner nut; 6. upper layer inner nut; 7. chamfer of screw hole; 8. first slot hole; 9. lower layer inner nut; 10. fixing piece; 11. second slot hole; 12. nut mounting hole. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to the attached Figure 1 - attached Figure 4, an embodiment provided by the present utility model: an anti-detachment snap nut, including an elastic outer shell 3, a fixing piece 10 is fixedly connected to an outer wall of one side of the elastic outer shell 3, a middle inner nut 5 is fixedly connected to an upper surface of the fixing piece 10, an upper inner nut 6 is fixedly connected to an upper surface of the middle inner nut 5, a first slot 8 is opened on an outer wall of one side of the upper inner nut 6, and the first slot 8 is opened on an outer wall of one side of the middle inner nut 5; a lower inner nut 9 is fixedly connected to a lower surface of the middle inner nut 5, and the lower inner nut 9 is sleeved on the fixing piece 10, a second slot 11 is opened on an outer wall of one side of the lower inner nut 9, and the lower inner nut 9 is used to form a connection with the fixing piece 10; an upper mounting hole 2 is opened on an upper surface of the elastic outer shell 3, and the upper mounting hole 2 is arranged at a top end of the first slot 8, and the upper mounting hole 2 is used for mounting a matching screw; a nut mounting hole 12 is opened on an outer wall of one side of the fixing piece 10 corresponding to the position of the lower inner nut 9, and the lower inner nut 9 is sleeved in the nut mounting hole 12, and the nut mounting hole 12 is used for mounting the lower inner nut 9; a lower mounting hole 4 is opened on a lower surface of the elastic outer shell 3, and the lower mounting hole 4 is arranged at a top end of the second slot 11, and the lower mounting hole 4 is used for mounting a matching screw; a screw hole chamfer 7 is opened on an outer wall of one side of the upper inner nut 6, and the screw hole chamfer 7 is arranged on an outer wall of one side of the first slot 8, and the screw hole chamfer 7 is used to form a certain pressure on the surface of the thread, which can increase the fastening force, avoid loosening and detachment caused by vibration and oscillation due to load, and can effectively prevent the thread from being damaged or broken due to material deformation, thereby reducing material loss and the cost of remanufacture; a spring piece 1 is fixedly connected to an upper surface of the elastic outer shell 3, and the spring piece 1 is used to improve the elasticity of the elastic outer shell 3 and avoid the inner nut from slipping out due to elastic deformation during locking.

[0021] Working principle: When using this utility model, first install the device. Install the matching screws through the upper installation holes 2. Pass the matching screws through the middle inner nut 5 and the upper inner nut 6 through the first slot holes 8, and pass the matching screws through the lower inner nut 9 through the second slot holes 11. The lower inner nut 9 is fixed by the nut installation holes 12 on the fixing piece 10. Fix the middle inner nut 5, the upper inner nut 6 and the lower inner nut 9 on the elastic housing 3 through the fixing piece 10. Pass the matching screws completely through the device through the lower installation holes 4 to fix it at the required position. This device uses a stepped nut. Specifically, the stepped sizes of the middle inner nut 5 and the upper inner nut 6 are smaller and are used to be inserted into the hole slots on the cabinet frame. The stepped size of the lower inner nut 9 is larger than the hole slot size, resulting in the nut not being embedded in the hole slot. When this snap nut and the matching screws lock the inner and outer frames of the cabinet together, the inner nut of this snap nut will not cause the outer cavity or the elastic piece 1 of the nut to deform due to the pressure, resulting in the inner nut coming out. This greatly enhances the fixing effect of the snap nut, improves the performance of the snap nut. At the same time, the inner nut can be designed in different shapes, such as square, triangular, circular, hexagonal, etc. Different shaped inner nuts can be selected according to the required usage environment to complete the fixing function of the snap nut in different environments, improving the applicability of the snap nut. And different shaped snap nuts increase the diversity of the device and increase the customer's purchase interest. Among them, the chamfer 7 of the screw hole is used to form a certain pressure on the surface of the thread, which can increase the fastening force, avoid loosening and falling off caused by vibration and oscillation due to the load, and can effectively prevent the thread from being damaged or broken due to the deformation of the material, thereby reducing the material loss and the cost of remanufacturing.

[0022] In the description of this utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0023] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-dropping clip nut, comprising an elastic housing (3), characterized in that: A fixing plate (10) is fixedly connected to an outer wall of one side of the elastic shell (3); a middle-layer inner nut (5) is fixedly connected to an upper surface of the fixing plate (10); an upper-layer inner nut (6) is fixedly connected to an upper surface of the middle-layer inner nut (5); a first slot (8) is provided on an outer wall of one side of the upper-layer inner nut (6); and the first slot (8) is provided on an outer wall of one side of the middle-layer inner nut (5); a lower-layer inner nut (9) is fixedly connected to a lower surface of the middle-layer inner nut (5); and the lower-layer inner nut (9) is sleeved on the fixing plate (10); and a second slot (11) is provided on an outer wall of one side of the lower-layer inner nut (9).

2. The anti-dropping clip nut according to claim 1, characterized in that: An upper mounting hole (2) is provided on the upper surface of the elastic shell (3), and the upper mounting hole (2) is arranged at the top end of the first slot hole (8).

3. The anti-dropping clip nut according to claim 1, characterized in that: A nut mounting hole (12) is provided on one side outer wall of the fixing plate (10) at a position corresponding to the lower inner nut (9), and the lower inner nut (9) is sleeved in the nut mounting hole (12).

4. The anti-dropping clip nut according to claim 1, characterized in that: A lower layer mounting hole (4) is provided on the lower surface of the elastic shell (3), and the lower layer mounting hole (4) is arranged at the top end of the second slot hole (11).

5. The anti-dropping clip nut according to claim 1, characterized in that: A screw hole chamfer (7) is provided on one side outer wall of the upper inner nut (6), and the screw hole chamfer (7) is arranged on one side outer wall of the first slot hole (8).

6. The anti-dropping clip nut according to claim 1, characterized in that: A spring sheet (1) is fixedly connected to the upper surface of the elastic shell (3).

Images