Nut anti-loosening safety device

Abstract

The utility model provides an anti-loosening safety device for a nut, which comprises a base, a nut and a nut, the pin is connected to the inner side face of the sliding cavity in a sliding mode, and a spring is fixedly installed at one end of the pin; the sliding block is arranged at the top of the pin; the fastening nut is arranged in the base, and a plurality of grooves are formed in the side face of the fastening nut. According to the nut anti-loosening safety device, the base, the pin, the spring, the sliding block, the fastening nut and other structures are matched with one another, the pin is embedded into a groove of the fastening nut to form mechanical locking, the nut can be effectively prevented from loosening under the high-strength vibration and impact environment, meanwhile, the pin can be retracted and released by shifting the sliding block, and the nut is prevented from loosening. In addition, the overall structure is compact, the thickness is small, and the device can adapt to scenes such as airborne electronic products which have strict requirements for space layout.

Description

Technical Field

[0001] This utility model relates to the field of nut anti-loosening technology, and in particular to a nut anti-loosening safety device. Background Technology

[0002] In the field of mechanical connections, preventing nuts from loosening is a crucial aspect of ensuring the safe and reliable operation of equipment. Loose nuts can lead to the detachment of mechanical parts, equipment malfunctions, and even safety accidents; therefore, effective anti-loosening measures are essential.

[0003] Existing methods for preventing nut loosening mainly include friction anti-loosening, mechanical anti-loosening, and permanent anti-loosening. Among them, friction anti-loosening prevents loosening by increasing the friction between the threaded parts, and common methods include using spring washers and self-locking nuts; mechanical anti-loosening uses mechanical parts to fix the nut and bolt together, such as using cotter pins and locking washers; permanent anti-loosening uses welding, riveting, or other methods to make the nut and bolt a whole, thus achieving the purpose of preventing loosening.

[0004] However, these traditional anti-loosening methods have certain limitations when facing some special scenarios. In airborne electronic products, there are special requirements for the anti-loosening device of the nut, such as easy repeated disassembly and thinness. However, the existing anti-loosening methods cannot meet these requirements at the same time. They are either inconvenient to disassemble or have a thick structure that cannot adapt to the compact space layout of airborne electronic products.

[0005] Therefore, it is necessary to provide a nut anti-loosening safety device to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a nut anti-loosening safety device, which solves the problem that existing nut anti-loosening devices are difficult to meet the requirements of easy repeated disassembly and thinness in special scenarios such as airborne electronic products.

[0007] To solve the above-mentioned technical problems, this utility model provides a nut anti-loosening safety device, comprising:

[0008] The base has a sliding cavity inside;

[0009] A pin is slidably connected to the inner side of the sliding cavity, and a spring is fixedly installed at one end of the pin;

[0010] A slider, wherein the slider is disposed on the top of the pin;

[0011] A fastening nut is disposed inside the base, and the fastening nut has multiple grooves on its side. The other end of the pin is inserted into the inner side of one of the grooves.

[0012] Preferably, the spring is disposed on the inner side of the sliding cavity.

[0013] Preferably, the slider has a countersunk screw inside, and the bottom of the countersunk screw is threaded to the top of the pin.

[0014] Preferably, the internal thread of the fastening nut is connected to a bolt.

[0015] Preferably, the nut anti-loosening safety device further includes an elastic plate and a positioning block, wherein the elastic plate is fixedly installed on the top of the slider and the positioning block is fixedly installed on the bottom of the elastic plate.

[0016] Preferably, the bottom of the positioning block abuts against the top of the base.

[0017] Preferably, a toggle plate is fixedly installed at one end of the elastic plate.

[0018] Compared with related technologies, the nut anti-loosening safety device provided by this utility model has the following advantages:

[0019] Beneficial effects:

[0020] This utility model provides a nut anti-loosening safety device, which uses a base, pin, spring, slider and fastening nut to cooperate with each other. The pin is embedded in the groove of the fastening nut to form a mechanical lock, which can effectively prevent the nut from loosening under high-intensity vibration and impact environment. At the same time, the pin can be retracted and released by moving the slider. It meets the requirements of easy repeated disassembly during equipment maintenance without affecting strength. In addition, the overall structure is compact and thin, which can be adapted to the scene with strict space layout requirements such as airborne electronic products. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of a first embodiment of a nut anti-loosening safety device provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows the structure of the fastening nut.

[0023] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the fastening nut.

[0024] Figure 4 This is a schematic diagram of the second embodiment of a nut anti-loosening safety device provided by this utility model;

[0025] Figure 5 for Figure 4 The enlarged schematic diagram of part A is shown.

[0026] The following are the labels in the diagram: 1. Base, 2. Slide cavity, 3. Pin, 4. Slider, 5. Spring, 6. Countersunk screw, 7. Fastening nut, 8. Groove, 9. Bolt, 10. Elastic plate, 11. Positioning block, 12. Actuating plate. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] First Embodiment

[0029] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a nut anti-loosening safety device provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the fastening nut. Figure 3 for Figure 2 The diagram shows a cross-sectional view of a fastening nut. A nut anti-loosening safety device includes: a base 1, wherein a sliding cavity 2 is formed inside the base 1;

[0030] Pin 3, pin 2 is slidably connected to the inner side of the sliding cavity 2, and a spring 5 is fixedly installed at one end of pin 3;

[0031] Slider 4, which is disposed on the top of the pin 3;

[0032] A fastening nut 7 is disposed inside the base 1. The fastening nut 7 has multiple grooves 8 on its side, and the other end of the pin 3 is inserted into the inner side of one of the grooves 8.

[0033] The spring 5 is disposed on the inner side of the sliding cavity 2.

[0034] The slider 4 is provided with a countersunk screw 6 inside, and the bottom of the countersunk screw 6 is threaded to the top of the pin 3.

[0035] The internal thread of the fastening nut 3 is connected to a bolt 9.

[0036] When the pin 3 slides on the inner side of the slide cavity 2, the outer side of the pin 3 is attached to the inner side of the slide cavity 2. This can limit the pin 3 and increase the stability of the pin 3 when it moves.

[0037] The countersunk screw 6 passes through the slider 4, and one end of the countersunk screw 6 is threaded onto the top of the pin 3, thereby enabling the slider 4 and the pin 3 to be installed together.

[0038] All of the grooves 8 are U-shaped grooves;

[0039] The end of pin 3 that is inserted into the inner side of groove 8 is curved;

[0040] The top of slider 4 is provided with anti-slip grooves, which can prevent slipping when slider 4 is moved, thus making it easier for the user to move slider 4.

[0041] The working principle of the nut anti-loosening safety device provided by this utility model is as follows:

[0042] When in use, first move the slider 4 to one side. At this time, the pin 3 connected to the slider 4 is subjected to external force, which overcomes the elastic force of the spring 5 in the slide cavity 2 and slides along the inner side of the slide cavity 2, thereby retracting into the base 1.

[0043] Then place the equipment to be installed in a suitable position, pass the bolt 9 through the equipment and other parts, screw it into the fastening nut 7, and then rotate the fastening nut 7 until the required torque is achieved;

[0044] Then, the slider 4 is released. At this time, the spring 5 loses its external force constraint, restores its elastic deformation, and pushes the pin 3 to slide along the slide cavity 2, so that the other end of the pin 3 is accurately inserted into one of the grooves 8 on the side of the fastening nut 7. In this way, the fastening nut 7 is restricted by the pin 3 and can no longer rotate, thereby achieving the purpose of preventing the nut from loosening.

[0045] Compared with related technologies, the nut anti-loosening safety device provided by this utility model has the following advantages:

[0046] Beneficial effects:

[0047] The base 1, pin 3, spring 5, slider 4 and fastening nut 7 work together to form a mechanical lock by inserting the pin 3 into the groove 8 of the fastening nut 7. This effectively prevents the nut from loosening under high-intensity vibration and impact. At the same time, moving the slider 4 can retract and release the pin 3, which meets the requirements of easy repeated disassembly during equipment maintenance without affecting strength. In addition, the overall structure is compact and thin, which can adapt to the strict space layout requirements of airborne electronic products and other scenarios.

[0048] Second Embodiment

[0049] Please refer to the following: Figure 4 and Figure 5 Based on the nut anti-loosening safety device provided in the first embodiment of this application, the second embodiment of this application proposes another nut anti-loosening safety device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0050] Specifically, the second embodiment of this application provides a nut anti-loosening safety device that differs in that it further includes an elastic plate 10 and a positioning block 11. The elastic plate 10 is fixedly installed on the top of the slider 4, and the positioning block 11 is fixedly installed on the bottom of the elastic plate 10.

[0051] The bottom of the positioning block 11 abuts against the top of the base 1.

[0052] A toggle plate 12 is fixedly installed at one end of the elastic plate 10.

[0053] The working principle of the nut anti-loosening safety device provided by this utility model is as follows:

[0054] When the worker needs to install and tighten the nut 7, he pushes the slider 4, which moves the elastic plate 10 and the positioning block 11. At this time, the bottom of the positioning block 11 abuts against the top of the base 1 and moves. When the slider 4 moves one end of the pin 3 out from the inner side of the groove 8, one side of the positioning block 11 will be stuck at the edge of the base 1, which can limit the slider 4. At this time, when the worker removes the tightening nut 7, there is no need to manually limit the slider 4 for a long time.

[0055] Compared with related technologies, the nut anti-loosening safety device provided by this utility model has the following advantages:

[0056] Beneficial effects:

[0057] The elastic plate 10, positioning block 11 and actuating plate 12 work together to ensure that when the fastening nut 7 is installed and removed, one side of the positioning block 11 can fit against the edge of the base 1, thereby limiting the slider 4 and pin 3. This makes it easier for the user to disassemble and install the fastening nut 7.

[0058] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A nut anti-loosening safety device, characterized in that, include: The base has a sliding cavity inside; A pin is slidably connected to the inner side of the sliding cavity, and a spring is fixedly installed at one end of the pin; A slider, wherein the slider is disposed on the top of the pin; A fastening nut is disposed inside the base, and multiple grooves are provided on the side of the fastening nut. The other end of the pin is inserted into the inner side of one of the grooves.

2. The nut anti-loosening safety device according to claim 1, characterized in that, The spring is disposed on the inner side of the sliding cavity.

3. The nut anti-loosening safety device according to claim 1, characterized in that, The slider has a countersunk screw inside, and the bottom of the countersunk screw is threaded to the top of the pin.

4. The nut anti-loosening safety device according to claim 1, characterized in that, The internal thread of the fastening nut is connected to a bolt.

5. A nut anti-loosening safety device according to claim 1, characterized in that, It also includes an elastic plate and a positioning block, wherein the elastic plate is fixedly installed on the top of the slider and the positioning block is fixedly installed on the bottom of the elastic plate.

6. A nut anti-loosening safety device according to claim 5, characterized in that, The bottom of the positioning block abuts against the top of the base.

7. A nut anti-loosening safety device according to claim 6, characterized in that, A toggle plate is fixedly installed at one end of the elastic plate.

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