CN113764939B - A quick-locking and anti-loosening fastening device - Google Patents

Abstract

The invention discloses a quick locking and anti-loosening fastening device, which relates to the field of connector equipment and comprises a mounting panel, a nut bin body and a screw, wherein a national standard elastic pad is movably sleeved on the surface of the screw, an ejector rod is movably connected inside the screw, a knob is movably sleeved on the surface of the screw, and a pressure spring is movably sleeved on the surface of the knob. Firstly, the position of the assembly can be quickly locked after the assembly is pushed into place, so that the assembly is prevented from being ejected or displaced, the assembly disassembly efficiency can be improved, the labor intensity can be reduced, the leakage probability of the blind-mate liquid-cooled connector can be effectively reduced, meanwhile, unnecessary opposite-plug actions can be reduced, and the service life of the relevant blind-mate connector can be prolonged; secondly, the special loose screw is adopted to tightly fix the component, so that the component and the equipment frame form a higher rigid body, the risks of loosening and falling off of the screw are avoided through radial anti-rotation measures of the end face of the screw, the vibration resistance intensity of the whole equipment is improved, and the long-term reliable operation of the equipment is ensured.

Description

A quick-locking and anti-loosening fastening device

Technical field

The invention relates to a connector device, specifically a quick-locking and anti-loosening fastening device.

Background technique

In order to meet the aesthetic requirements of electronic equipment, compact system layout, and simple and efficient maintenance operations, it is common to use flexible blind plug interconnection for the external electrical, liquid cooling and other interfaces of components (or units) and the functional interconnection of the system.

The stability and reliability of blind plug electrical interconnection is very critical, especially when it comes to multi-point blind plug electrical interconnection, its performance consistency is also crucial. Taking factors such as materials and manufacturing into account, in the design of blind plug electrical connectors, a floating tolerance mating interconnection structure is generally used to ensure the reliability and consistency of the electrical interconnection after mating, and to achieve floating tolerance during the mating process. Poor, generally a guide and elastic mechanism must be designed inside the connector, so the elastic resistance must be overcome during the insertion process to achieve the purpose of insertion. Therefore, it is recommended to quickly fix the component after it is inserted to prevent the component from popping out or shifting, which will only increase the number of insertions and increase the effective service life of the connector.

The application of blind-mating liquid-cooled connectors is now relatively mature. Generally, plugs and sockets are designed with spring-supported inner conductors. The working principle is basically as follows: blind-mating liquid-cooled connectors are mated, the inner conductors are in end-face contact, and the mating process It overcomes the two-way resistance of the spring and the radial damping of the rubber ring on the internal conductors of the plug and socket, and at the same time pushes up the internal interface to realize the conduction of the channels in the plug and socket, and the flow of liquid cooling medium to achieve the purpose of heat exchange. After the plug and socket are separated, the inner conductors of the plug and socket automatically return to their original positions under the support of the spring, thereby achieving self-sealing of the plug and socket after separation.

There are also some problems in the application process of blind insertion liquid-cooling connectors. During the dynamic process of insertion and separation of plugs and sockets, due to factors such as the internal pressure of the liquid-cooling system pipeline and the dynamic internal sealing ring of the connector, it is easy to cause trace amounts of leakage. After being inserted in place, the plug and socket are in a relatively static position and generally will not leak. Therefore, for components with liquid-cooled blind plug connectors, in order to avoid leakage of the blind plug connector, it is recommended to quickly fix the component after inserting it to prevent the component from popping out or displacing under the support of the internal elastic parts of the connector, increasing the probability of joint leakage.

At present, there are many fixing measures for components using elastic blind plug interconnection. A common solution is to pre-set four captive screws at the four corners of the component panel during design. During operation, first push the component into place, and then use one hand to Hold the component firmly to prevent it from moving, and free up your other hand to tighten the four-corner screws on the panel. When there are a large number and variety of blind-mated connectors, it is sometimes difficult to hold the component with one hand, which may cause the component to pop out or shift, increase the leakage probability of the blind-mated liquid-cooled connector, and virtually increase the insertion of all blind-mated connectors. The number of unplugging times will indirectly reduce the service life of the connector. In addition, in environments with high vibration and shock requirements, this simple screw fixation method does not have a locking function, so the risk of loosening and falling off is high. For highly precise electronic equipment, this hidden danger will cause losses. will be quite serious.

In response to the above problems, after searching related technologies, we took the patent number CN 203822793 U "Sealed Quick Release Lock" as an example. In terms of solving problems and realizing functions, this is a lock that is sealed, quickly disassembled and assembled, and prevents it from falling off. The invention is cleverly conceived and can achieve its invention purpose and meet specific usage needs.

The basic principle of this patent is: Use a flat-blade screwdriver to insert into the rotation groove at the top of the pin, move the ejector rod axially along the inner hole of the pin, push away the stop slider, rotate the pin 90° clockwise, and the wedge-shaped square at the end of the pin is in contact with the lock seat. The inner wall of the rectangular hole of the sleeve forms a 90° misaligned lock. Release the screwdriver, and the stop slider is reset. The long slot of the wedge block on the stop slider engages with the wedge-shaped square at the end of the pin to achieve anti-rotation and anti-falling locking of the pin. .

Analyzing the internal structure of the patent, it can be seen that theoretically there is a certain floating space in the distance and position between the fixed sleeve and the fixed part (which can also be understood as between the pin and the lock seat cover), which allows axial and A certain radial clearance, similar to a flexible connection. In actual use, rubber pads will be used to isolate them to function as interface seals. Therefore, this patent is more suitable for applications where the assembly accuracy is not too high, but reliable prevention of falling off is required, such as for sealing and fixing hatch covers with sealing rubber pads, sealing doors, sealing covers, etc.

The "sealed quick release lock" can achieve the purpose of sealing the quick lock to prevent it from falling off, but it cannot lock the position tightly and prevent loosening. It cannot make the components and equipment frame form a highly rigid body, so it is not suitable for the installation and fixation of general electronic equipment. , nor can it solve the technical problems mentioned in the present invention.

Contents of the invention

The purpose of the invention is to solve the problem that after the components are pushed into place, they cannot quickly lock the position, cannot prevent the components from popping out or displacing, fix the components tightly, cannot make the components and the equipment frame form a highly rigid body, and it is difficult to prevent the fixing measures from loosening or even The problem of falling off and failing.

In order to achieve the above objects, the present invention provides the following technical solutions:

A quick-lock anti-loosening fastening device, including a mounting panel, a nut bin body and a screw. The surface of the screw is movably connected with a national standard elastic washer, the internal part of the screw is movably connected with a push rod, and the surface of the screw is movably connected with a knob. , the surface of the knob is movable with a compression spring, and the other end of the knob is movable with a paddle. There are compression spring limit grooves and paddle reset grooves on both sides of the installation panel. The paddle reset groove and compression spring limit The slots are connected to each other, the compression spring is movably connected inside the compression spring limit slot, the pick is movably connected inside the pick reset slot, the end of the knob away from the pick is provided with an orientation recognition slot, and the end of the screw is away from the orientation recognition slot. A pawl is provided, and the surface of the paddle is provided with two paddle hooks and four annularly designed riveting notches. An end face of the knob away from the orientation identification groove is provided with a position and size corresponding to the riveting notches. Matching riveted piece, the pick is sleeved on one end face of the knob through the riveted notch and the riveted piece, and the pick is clamped inside the pick reset groove through the pick hook; the inner wall of the nut compartment is movably connected with Floating nut, anti-rotation block and spring. One end of the spring is movably connected to one side of the inner wall of the nut chamber. The other end of the spring is movably connected to one side of the anti-rotation block. The side of the anti-rotation block away from the spring is with one end of the floating nut. Movably connected, one side of the nut compartment body is provided with a nut compartment cover, the other side of the nut compartment cover is provided with a compression spring, the other side of the compression spring is provided with a blocking piece, and the other side of the blocking piece is provided with a national standard sinker. Head rivet, the end of the national standard countersunk head rivet close to the baffle passes through the baffle, leaf compression spring, nut compartment cover and nut compartment body and extends to the side of the nut compartment body away from the nut compartment cover. The baffle, leaf compression spring and nut The bin covers are all fixedly connected to the surface of the nut bin body. The surface of the nut bin cover close to the nut bin body is movably connected to the end of the floating nut away from the anti-rotation block. The compression spring is provided with a damping bump on the side close to the baffle. The damping protrusion is movably connected to the surface of the baffle. The side of the nut cover close to the compression spring is provided with a paddle rotation groove. The end of the anti-rotation block away from the spring is provided with a conical surface of the anti-rotation block; one side of the installation panel Two equipment frame beams are fixed near the top and bottom, and components are provided on the side close to the mounting panel, and the components are arranged between the two equipment frame beams.

Preferably: the installation panel and the installation have two connection methods, one is behind the panel installation, the other is the front panel embedded installation, screws, knobs, compression springs, paddles, ejector rods, national standard spring washers, installation panels , paddle reset groove, compression spring limit groove, paddle hook, orientation identification groove, riveting piece, riveting notch and pawl to form a screw combination, baffle, plate compression spring, nut compartment cover, nut compartment body, floating Nuts, anti-rotation blocks, springs, national standard countersunk head rivets, anti-rotation block conical surfaces, paddle rotation grooves and damping bumps are combined into a nut assembly. The shape and size of the screw assembly and nut assembly are related to the installation behind the plate and the embedded installation in front of the plate. The shape and size of the two connections match each other.

Preferably: the shape of the paddle reset groove and the shape of the paddle hook are arranged to match each other.

Preferably: the shape of the anti-rotation block is a square design.

Preferably: the surface of the conical surface of the anti-rotation block is provided with a groove that matches the shape and size of the pawl.

Due to the adoption of the above technical solution, the present invention has the following advantages:

The present invention is suitable for electronic equipment that adopts elastic blind plug interconnection. It uses a quick-locking and anti-loosening fastening device: first, it can quickly lock the position of the component after it is pushed into place, prevent the component from popping up or being displaced, and can improve the disassembly and assembly of the component. Efficiency and reduced labor intensity can effectively reduce the leakage probability of blind-mating liquid-cooled connectors, while reducing unnecessary plugging movements and improving the service life of related blind-mating connectors; secondly, special loose and non-falling screws are used to tightly fix the components. The components and the equipment frame form a highly rigid body, and the radial anti-rotation measures on the screw end faces are used to eliminate the risk of screw loosening and falling off, improve the vibration resistance of the entire equipment, and provide guarantee for long-term reliable operation of the equipment.

Description of drawings

Figure 1 is a schematic front view of the exploded structure of a screw combination of a quick-lock anti-loosening fastening device.

Figure 2 is a schematic rear view of the exploded structure of a screw assembly of a quick-lock anti-loosening fastening device.

Figure 3 is a cross-sectional view of a quick-lock anti-loosening fastening device in which the screw combination is assembled to the installation panel.

Figure 4 is a front view of a quick-lock anti-loosening fastening device in which the screw combination is assembled to the installation panel.

Figure 5 is a rear view of the screw assembly of a quick-lock anti-loosening fastening device assembled to the installation panel.

Figure 6 is a riveting diagram of the knob and paddle in a quick-lock anti-loosening fastening device.

Figure 7 is an exploded view of a nut assembly installed behind the middle plate of a quick-lock anti-loosening fastening device.

Figure 8 is a cross-sectional view of a nut assembly installed behind the middle plate of a quick-lock anti-loosening fastening device.

Figure 9 is a schematic structural diagram of a compression spring in a quick-lock anti-loosening fastening device.

Figure 10 is a schematic structural diagram of a nut compartment cover in a quick-lock anti-loosening fastening device.

Figure 11 is a schematic structural diagram of a stop rotating block of a quick-lock anti-loosening fastening device.

Figure 12 is an exploded view of a nut assembly embedded in the front of the plate in a quick-lock anti-loosening fastening device.

Figure 13 is a cross-sectional view of a nut assembly embedded in front of the plate in a quick-lock anti-loosening fastening device.

Figure 14 is an assembly diagram of a quick-locking anti-loosening fastening device between the assembly of the rear mounting nut assembly and the equipment frame beam.

Figure 15 is a cross-sectional view of a quick-lock anti-loosening fastening device using a rear-plate mounting nut combination for the equipment frame beam.

Figure 16 is a side cross-sectional view of a quick-lock anti-loosening fastening device using a rear-plate mounting nut combination for the equipment frame beam.

Figure 17 is a cross-sectional view of a quick-lock anti-loosening fastening device using a front-plate embedded nut combination for the equipment frame beam.

Figure 18 is a side cross-sectional view of a quick-lock anti-loosening fastening device using a front-plate embedded nut combination for the equipment frame beam.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Please refer to Figures 1 to 18. In the embodiment of the present invention, a quick-lock anti-loosening fastening device includes the following embodiments:

Example 1

It includes a mounting panel 8, a nut bin body 20 and screws 2. The surface of the screw 2 is movably connected to a national standard elastic washer 7. The internal part of the screw 2 is movably connected to a push rod 6. The surface of the screw 2 is movably connected to a knob 3. A compression spring 4 is movably connected to the surface of the knob 3, and a paddle 5 is movably connected to the surface of the other end of the knob 3. Compression spring limit grooves 10 and a paddle reset groove 9 are respectively provided on both sides of the installation panel 8. The reset groove 9 and the compression spring limit groove 10 are connected with each other. The compression spring 4 is movably connected inside the compression spring limit groove 10. The paddle 5 is movably connected inside the paddle reset groove 9. The knob 3 is away from the paddle 5. The end face is provided with an orientation identification slot 12. The end of the screw 2 away from the orientation identification slot 12 is provided with a pawl 15. The surface of the paddle 5 is provided with two paddle hooks 11 and four ring-shaped riveted notches 14. A riveting piece 13 matching the position and size of the riveting notch 14 is provided on an end surface of the knob 3 away from the azimuth identification groove 12. The paddle 5 is sleeved on one end surface of the knob 3 through the riveting notch 14 and the riveting piece 13. , the paddle 5 is clamped inside the paddle reset groove 9 through the paddle hook 11; the inner wall of the nut chamber 20 is movably connected with a floating nut 21, a rotation stop block 22 and a spring 23, one end of the spring 23 is connected to One side of the inner wall of the nut bin body 20 is movably connected, the other end of the spring 23 is movably connected to one side of the anti-rotation block 22, and the side of the anti-rotation block 22 away from the spring 23 is movably connected to one end of the floating nut 21. The nut bin body 20 A nut compartment cover 19 is provided on one side of the nut compartment cover 19, a compression spring 18 is provided on the other side of the nut compartment cover 19, a baffle 17 is provided on the other side of the compression spring 18, and a national standard sinker is provided on the other side of the baffle 17. The head rivet 24, the end of the national standard countersunk head rivet 24 close to the baffle 17 passes through the baffle 17, the leaf compression spring 18, the nut compartment cover 19 and the nut compartment body 20 and extends to the side of the nut compartment body 20 away from the nut compartment cover 19 , the baffle 17, the plate compression spring 18 and the nut compartment cover 19 are all fixedly connected to the surface of the nut compartment body 20 through 24, the side surface of the nut compartment cover 19 close to the nut compartment body 20 and the end of the floating nut 21 away from the anti-rotation block 22 Movably connected, the side of the compression spring 18 close to the baffle 17 is provided with a damping protrusion 27, the damping protrusion 27 is movably connected to the surface of the baffle 17, and the nut cover 19 is provided with a pick on the side close to the compression spring 18 The rotation groove 26 and the end of the anti-rotation block 22 away from the spring 23 are provided with an anti-rotation block cone 25; two equipment frame beams 35 are fixed on one side of the installation panel 8 near the top and bottom, and the installation panel 8 is close to An assembly 33 is provided on one side of 35, and the assembly 33 is provided between two equipment frame beams 35.

As shown in the figure, install panels 8 and 35 after the mounting plate, screw 2, knob 3, pressure spring 4, paddle 5, push rod 6, national standard spring washer 7, installation panel 8, paddle reset slot 9, pressure The spring limit groove 10, the paddle hook 11, the orientation identification groove 12, the riveting piece 13, the riveting notch 14 and the pawl 15 form a screw combination, the stopper 17, the leaf compression spring 18, the nut compartment cover 19, the nut compartment body 20. The floating nut 21, the anti-rotation block 22, the spring 23, the national standard countersunk head rivet 24, the conical surface of the anti-rotation block 25, the paddle rotation groove 26 and the damping bump 27 are combined into a nut combination. The shapes of the screw combination and the nut combination are as follows: The size and the connection method of the shape and size of the installation behind the panel match each other. For installation behind the panel, you first need to use a nut combination to connect the equipment frame beam 35 and the installation panel 8, and reverse the knobs 3 at the four corners of the installation panel 8. Rotate the hour hand 90 degrees to complete the locking assembly, and then connect the screw combination with the nut combination. This method is a behind-the-board installation method. The shape of the baffle 17, plate compression spring 18, nut compartment cover 19 and nut compartment body in this equipment The appearance needs to be changed according to the actual installation to ensure the reliability and stability of the installation.

The shape of the paddle reset groove 9 and the shape of the paddle hook 11 are matched with each other to enhance the connection stability.

The shape of the anti-rotation block 22 is a square design, which prevents the anti-rotation block 22 from rotating, and the square design makes it difficult to rotate.

The surface of the conical surface 25 of the anti-rotation block is provided with a groove that matches the shape and size of the pawl 15. The groove and the pawl 15 are matched with each other to prevent the rotation of the pawl 15 and enhance stability.

Example 2

It includes a mounting panel 8, a nut bin body 20 and screws 2. The surface of the screw 2 is movably connected to a national standard elastic washer 7. The internal part of the screw 2 is movably connected to a push rod 6. The surface of the screw 2 is movably connected to a knob 3. A compression spring 4 is movably connected to the surface of the knob 3, and a paddle 5 is movably connected to the surface of the other end of the knob 3. Compression spring limit grooves 10 and a paddle reset groove 9 are respectively provided on both sides of the installation panel 8. The reset groove 9 and the compression spring limit groove 10 are connected with each other. The compression spring 4 is movably connected inside the compression spring limit groove 10. The paddle 5 is movably connected inside the paddle reset groove 9. The knob 3 is away from the paddle 5. The end face is provided with an orientation identification slot 12. The end of the screw 2 away from the orientation identification slot 12 is provided with a pawl 15. The surface of the paddle 5 is provided with two paddle hooks 11 and four ring-shaped riveted notches 14. A riveting piece 13 matching the position and size of the riveting notch 14 is provided on an end surface of the knob 3 away from the azimuth identification groove 12. The paddle 5 is sleeved on one end surface of the knob 3 through the riveting notch 14 and the riveting piece 13. , the paddle 5 is clamped inside the paddle reset groove 9 through the paddle hook 11; the inner wall of the nut chamber 20 is movably connected with a floating nut 21, a rotation stop block 22 and a spring 23, one end of the spring 23 is connected to One side of the inner wall of the nut bin body 20 is movably connected, the other end of the spring 23 is movably connected to one side of the anti-rotation block 22, and the side of the anti-rotation block 22 away from the spring 23 is movably connected to one end of the floating nut 21. The nut bin body 20 A nut compartment cover 19 is provided on one side of the nut compartment cover 19, a compression spring 18 is provided on the other side of the nut compartment cover 19, a baffle 17 is provided on the other side of the compression spring 18, and a national standard sinker is provided on the other side of the baffle 17. The head rivet 24, the end of the national standard countersunk head rivet 24 close to the baffle 17 passes through the baffle 17, the leaf compression spring 18, the nut compartment cover 19 and the nut compartment body 20 and extends to the side of the nut compartment body 20 away from the nut compartment cover 19 , the baffle 17, the plate compression spring 18 and the nut compartment cover 19 are all fixedly connected to the surface of the nut compartment body 20 through 24, the side surface of the nut compartment cover 19 close to the nut compartment body 20 and the end of the floating nut 21 away from the anti-rotation block 22 Movably connected, the side of the compression spring 18 close to the baffle 17 is provided with a damping protrusion 27, the damping protrusion 27 is movably connected to the surface of the baffle 17, and the nut cover 19 is provided with a pick on the side close to the compression spring 18 The rotation groove 26 and the end of the anti-rotation block 22 away from the spring 23 are provided with an anti-rotation block cone 25; two equipment frame beams 35 are fixed on one side of the installation panel 8 near the top and bottom, and the installation panel 8 is close to An assembly 33 is provided on one side of 35, and the assembly 33 is provided between two equipment frame beams 35.

As shown in the figure, the installation tools for installing panels 8 and 35 are front-panel embedded installation. Front-panel embedded installation is the same as rear-panel installation, except that the shapes of the baffle 17, the leaf compression spring 18, the nut compartment cover 19, and the nut compartment body 20 are different. Different, this installation method is to match different installation panels 8, components 33 and equipment frame beams 35 for quick installation. Screws 2, knob 3, compression spring 4, paddle 5, push rod 6, national standard spring washer 7, Installation panel 8, paddle reset slot 9, compression spring limit slot 10, paddle hook 11, orientation identification slot 12, riveting piece 13, riveting notch 14 and pawl 15 form a screw combination, and the stopper 17, the piece pressure Spring 18, nut compartment cover 19, nut compartment body 20, floating nut 21, anti-rotation block 22, spring 23, national standard countersunk head rivet 24, anti-rotation block cone 25, paddle rotation groove 26 and damping bump 27. The shape and size of the nut combination, the screw combination and the nut combination match each other with the shape and size of the back-board installation and the front-board embedded installation.

The shape of the paddle reset groove 9 and the shape of the paddle hook 11 are arranged to match each other.

The shape of the anti-rotation block 22 is a square design.

The surface of the anti-rotation block conical surface 25 is provided with a groove that matches the shape and size of the pawl 15 .

The method of operation of this invention is:

First, the matching mounting holes need to be prefabricated on the component mounting panel 8. The mounting holes are characterized by a compression spring limit slot 10 on the front and a paddle reset slot 9 on the back. Put the compression spring 4 into the compression spring limit slot on the front of the matching installation hole. Inside 10, put the knob 3 from the front of the installation panel 8, pass the compression spring 4 and the matching mounting hole of the panel, fit the pick 5 on the tail of the knob 3 on the back of the installation panel 8 and rivet it tightly, pay attention to the two top picks 5 The paddle hook 11 needs to be aligned with the two position identification grooves 12 at the end of the knob 3, and the four riveted pieces 13 on the knob 3 and the four riveted notches 14 on the paddle 5 need to fit tightly. After riveting, it will be in the natural state. down, the pick 5 returns to the pick reset groove 9 on the back of the installation panel 8 under the support of the compression spring 4. Secondly, insert the ejector rod 6 from the tail of the screw 2 into the inner hole of the screw, and rivet it tightly in the 90° hole at the root of the hexagonal groove in the head of the screw 2 to form one body. Then, insert the national standard elastic washer 7 on the nail rod of the screw 2. Finally, screw the above-mentioned integrated screw into the inner ring of the previously assembled knob 3 to complete the assembly process of screw assembly 1.

The present invention has two sets of nut assembly designs, one is a nut assembly 16 suitable for installation behind the plate, and the other is a nut assembly 16 suitable for embedded installation in front of the plate, except for the baffle 17, the leaf compression spring 18, and the nut compartment cover 19 Except for the difference in the shape of the nut bin body 20, the floating nut 21, the anti-rotation block 22, and the spring 23 are common parts. The assembly process and planning principles of the two sets of program accessories are the same. The following takes the nut combination 16 installed behind the plate as an example. The assembly process is analyzed as follows:

Place the spring 23 into the bottom of the nut bin A20, then put the anti-rotation block 22 in the direction and contact with the spring 23, and snap it in, and then put the floating nut 21 in the direction so that it is in contact with the anti-rotation block 22. Match the taper surface 25 of the block, and cover the nut compartment cover A19, the leaf compression spring A18 and the stopper A17 in sequence. Pay attention to the forward and reverse directions of each part. The paddle rotation groove 26 of the nut compartment cover A19 faces outward, and the two symmetrical plates on the compression spring A18 A total of four damping protrusions 27 are facing inward, and the four-corner countersunk holes of the baffle A17 are facing outward. At the same time, the positions of the above three parts need to be aligned with the nut compartment body A20. Finally, use the national standard countersunk head rivet 24 to pass through the baffle A17 and The four corners of the compression spring A18, the nut compartment cover A19 and the nut compartment body A20 correspond to the through holes, and the countersunk holes on the back of the nut compartment body A20 are riveted and leveled to complete the assembly process of the nut assembly A16 installed behind the plate.

Below, we will learn how to use the quick-lock anti-loosening fastening device to achieve the purpose of the invention through the specific application plan of the nut assembly 16 and the screw assembly installed behind the board. The plan is divided into two parts. 1. Install the assembly: Insert the assembly into After installing the equipment frame, you need to lock the components first and then tighten the screws. 2. Disassemble the components: Before pulling out the components from the equipment frame, you need to loosen the screws and then unlock the components;

After inserting the component into the equipment frame, first lock the component and then tighten the screw in two steps;

The action process of quickly locking components is as follows:

After the component is inserted into the equipment frame and in place, pinch and push the knob 3, compress the compression spring 4, and push the knob 3 inward along the axial direction of the knob into place. At this time, the paddle 5 integrated with the knob 3 follows. When the knob 3 is pushed in, it will also move forward, pass through the gap corresponding to the stopper 17 and the compression spring 18, and enter the paddle rotation groove 26 on the nut cover 19. Rotate the knob 3 counterclockwise 90° and release the paddle. 5 will also rotate 90° synchronously. When the paddle 5 rotates 90°, it must overcome the resistance of two symmetrical groups of four damping bumps 27 on the compression spring 18, and then stop at the 90° position. The end of the knob 3 The two position identification grooves 12 are in a vertical state to quickly lock the components in position and prevent the components from popping out or being displaced from the equipment frame;

The action process of screw tightening and the principle of screw locking are as follows:

Insert the hexagonal wrench into the hexagonal groove of the head of screw 2. The end face of the hexagonal wrench also resists the ejector rod 6 and moves forward axially. Turn the hexagonal wrench clockwise. The thread of screw 2 is screwed with the floating nut 21. Continue to turn the wrench. , as the meshing depth increases, the end of the ejector rod 6 gradually contacts and resists the anti-rotation block 22. At this time, continue to turn the wrench to tighten the screw 2, and the anti-rotation block 22 compresses the spring 23 and moves forward against the resistance until finally the screw 2 Tighten. Take out the hex wrench, and the anti-rotation block 22 moves back under the release of the elastic force of the spring 23. The four grooves on the anti-rotation block 22 block the four pawls 15 at the tail of the screw 2, and push back the ejector rod 6. Because the anti-rotation block 22 The outer shape of 22 and the inner cross-section of the nut bin body 20 in contact with it are all square designs, which actually prevents the risk of rotation of the anti-rotation block 22. The four grooves on the anti-rotation block 22 block the four pawls 15 at the tail of the screw 2. Moreover, under the elastic force of the spring 23, it can prevent the retraction position of the anti-rotation block 22 from causing the blocking action to fail, causing the pawl 15 to trip, and fundamentally and effectively prevent the screw 2 from loosening and falling off;

Before pulling out the component from the equipment frame, loosen the screw and then unlock the component in two steps;

The process of unlocking and loosening the screws is as follows:

Insert the hexagonal wrench into the hexagonal groove of the head of screw 2. The end face of the hexagonal wrench also resists the ejector rod 6 to move forward axially. The end of the ejector rod 6 resists the anti-rotation block 22 and compresses the spring 23 to overcome the resistance and move forward. The four grooves on the anti-rotation block 22 and the four pawls 15 at the tail of the screw 2 are tripped to achieve the purpose of unlocking the screw 2. At this time, the screw 2 can be rotated. Turn the hexagonal wrench counterclockwise to make the screw 2 separate from the floating nut 21. .

The process of unlocking components is as follows:

Pinch the knob 3 and rotate it 90° clockwise. The integrated paddle 5 formed by the knob 3 will also rotate 90° simultaneously. When the paddle 5 rotates 90°, it must overcome two symmetrical groups of four dampings on the compression spring 18. The resistance of the bump 27 then stops at the 90° position, and the two position identification grooves 12 at the end of the knob 3 become horizontal. At this time, the compression spring 4 will release force and support the knob 3 to move outward, and pull it out. Knob 3 and paddle 5 will also move outward simultaneously and return to the paddle reset slot 9 on the back of the installation panel 8 to complete the action of unlocking the component. Finally, the component can be pulled out from the equipment frame.

Claims (5)

1. A quick-locking anti-loosening fastening device, including a mounting panel (8), a nut bin (20) and a screw (2), characterized in that the surface of the screw (2) is movablely sleeved with a national standard elastic washer (7), the internal movable connection of the screw (2) is a push rod (6), the surface of the screw (2) is movablely connected to a knob (3), and the surface of the knob (3) is movablely connected to a compression spring (4). A paddle (5) is movably connected to the surface of the other end of the knob (3), and a compression spring limit groove (10) and a paddle reset groove (9) are respectively provided on both sides of the installation panel (8). The paddle reset groove is (9) is interconnected with the compression spring limit groove (10), the compression spring (4) is movably connected inside the compression spring limit groove (10), and the paddle (5) is movably connected to the paddle reset groove (9). Inside, the end of the knob (3) away from the paddle (5) is provided with an orientation recognition slot (12), and the end of the screw (2) away from the orientation recognition slot (12) is provided with a pawl (15), and the paddle (5) Two paddle hooks (11) and four annularly designed riveting notches (14) are respectively provided on the surface. A riveting notch is provided on one end of the knob (3) away from the azimuth identification groove (12). (14) has a riveting piece (13) whose position and size match each other. The plectrum (5) is sleeved on one end surface of the knob (3) through the riveting slot (14) and the riveting piece (13). The plectrum (5) The paddle hook (11) is clamped inside the paddle reset groove (9); the inner wall of the nut chamber (20) is movably connected with a floating nut (21), a rotation stop block (22) and a spring (20). 23), one end of the spring (23) is movably connected to one side of the inner wall of the nut bin body (20), the other end of the spring (23) is movably connected to one side of the anti-rotation block (22), and the anti-rotation block (22) is away from One side of the spring (23) is movably connected to one end of the floating nut (21). One side of the nut chamber body (20) is provided with a nut chamber cover (19), and the other side of the nut chamber cover (19) is provided with a piece press Spring (18), the other side of the leaf compression spring (18) is provided with a baffle (17), the other side of the baffle (17) is provided with a national standard countersunk head rivet (24), the national standard countersunk head rivet (24) is close to One end of the baffle (17) passes through the baffle (17), the compression spring (18), the nut bin cover (19) and the nut bin body (20) and extends to the nut bin body (20) away from the nut bin cover (19) ), the baffle (17), the plate compression spring (18) and the nut compartment cover (19) are all fixedly connected to the surface of the nut compartment body (20) through 24, and the nut compartment cover (19) is close to the nut compartment body (20) ) is movably connected to the end of the floating nut (21) away from the anti-rotation block (22). The compression spring (18) is provided with a damping bump (27) on the side close to the baffle (17). The damping bump is (27) is movably connected to the surface of the baffle (17). The nut cover (19) is provided with a paddle rotation slot (26) on the side close to the compression spring (18). The anti-rotation block (22) is away from the spring (23). ) is provided with an anti-rotation block conical surface (25); two equipment frame beams (35) are fixed on one side of the installation panel (8) near the top and bottom, and the installation panel (8) is close to 35 A component (33) is provided on one side, and the component (33) is provided between two equipment frame beams (35). 2. A quick-locking anti-loosening fastening device according to claim 1, characterized in that the installation panels (8) and 35 have two connection methods, one is behind-the-board installation, and the other is For front panel mounting, screws (2), knobs (3), pressure springs (4), paddles (5), push rods (6), national standard spring washers (7), installation panels (8), paddle reset slots (9), compression spring limit groove (10), paddle hook (11), orientation identification groove (12), riveting piece (13), riveting notch (14) and pawl (15) form a screw combination. Baffle (17), compression spring (18), nut compartment cover (19), nut compartment body (20), floating nut (21), anti-rotation block (22), spring (23), national standard countersunk head rivet ( 24), the anti-rotation block conical surface (25), the paddle rotation groove (26) and the damping bump (27) are combined into a nut combination. The shape and size of the screw combination and nut combination are consistent with the shape of the behind-the-board installation and the front-board embedded installation. The two connection methods and sizes match each other. 3. A quick-lock anti-loosening fastening device according to claim 1, characterized in that the shape of the paddle reset groove (9) and the shape of the paddle hook (11) are arranged to match each other. 4. A quick-locking and anti-loosening fastening device according to claim 1, characterized in that the shape of the anti-rotation block (22) is a square design. 5. A quick-locking anti-loosening fastening device according to claim 1, characterized in that the surface of the anti-rotation block conical surface (25) is provided with a shape and size that matches the shape and size of the ratchet (15). groove.