CN113764939B

CN113764939B - Quick locking fastener

Info

Publication number: CN113764939B
Application number: CN202111048626.6A
Authority: CN
Inventors: 向树国; 顾叶青; 谢金祥; 王超
Original assignee: CETC 14 Research Institute
Current assignee: CETC 14 Research Institute
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2023-11-24
Anticipated expiration: 2041-09-08
Also published as: CN113764939A

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

Quick locking fastener

Technical Field

The invention relates to connector equipment, in particular to a quick-locking anti-loosening fastening device.

Background

In order to meet the requirements of the attractiveness of electronic equipment, compact system layout, simplicity, convenience and high efficiency in maintenance operation, interfaces such as electric interfaces, liquid cooling interfaces and the like of external connection of components (or units) are commonly connected with functions of the system by elastic blind plugging.

The stability and reliability of the blind-mate electrical interconnection are very critical, and the performance consistency is also very critical especially in the case of multi-point blind-mate electrical interconnection. In consideration of factors such as materials and manufacturing, in the design of a blind-mate electrical connector, a floating tolerance opposite-plug interconnection structure is generally adopted to ensure the reliability and consistency of electrical interconnection after plugging, and floating tolerance in the plugging process is realized, and a guiding and elastic mechanism is generally designed in the connector, so that elastic resistance is necessarily overcome in the plugging assembly process to realize the plugging purpose. Therefore, after the assembly is inserted, the assembly is suggested to be quickly fixed, the assembly is prevented from being ejected or displaced, the number of opposite insertion times is increased, and the effective service life of the connector is prolonged.

The blind-mate liquid-cooled connector is mature in application at present, and the inner conductors supported by springs are respectively designed in the plug and the socket, and the working principle is basically as follows: the blind-plug liquid-cooling connector is plugged, the end faces of the inner conductors are contacted, the bidirectional resistance of the springs and the radial damping of the rubber rings on the inner conductors of the plug and the socket are overcome in the plugging process, meanwhile, the inner interface is jacked up, the conduction of channels in the plug and the socket is realized, and the liquid-cooling medium circulates to achieve the purpose of heat exchange. After the plug and the socket are separated, the inner conductors of the plug and the socket are respectively and automatically restored to the original positions under the support of the spring, so that the self-sealing of the plug and the socket after the separation is realized.

The blind-mate liquid-cooled connector has some problems in the application process, and in the dynamic action process of plugging and separating the plug and the socket, trace leakage is easily caused due to the internal pressure of a liquid-cooled system pipeline, dynamic internal sealing rings of the connector and other factors. After the plug is plugged in place, the plug and the socket are in relative static positions, and generally cannot leak. Therefore, in order to avoid leakage of the blind plug, the assembly is suggested to be quickly fixed after the assembly is inserted, so that the assembly is prevented from being ejected or displaced under the holding of the elastic piece in the connector, and the leakage probability of the connector is increased.

At present, a plurality of elastic blind-insert interconnected assembly fixing measures are adopted, and the common solution is that four loose screws are preset at four corners of an assembly panel during design, the assembly is pushed into place during operation, then the assembly is firmly supported by one hand, the assembly is prevented from moving, and meanwhile, the screws at four corners of the panel are screwed by the other hand. When the number and variety of the blind-mate connectors are large, the assembly is supported by one hand sometimes and forcefully, the assembly can be ejected or displaced, the leakage probability of the blind-mate liquid-cooled connector is increased, the plugging times of all the blind-mate connectors are increased intangibly, and the service life of the connector is indirectly reduced. In addition, under the environment with high vibration impact requirement, the simple loosening and falling-free screw fixing mode has no locking function, so that the risk of loosening and falling off is high, and the loss effect caused by the hidden trouble is quite serious for high-precision electronic equipment.

In order to solve the problems, the related technology is searched, and the patent number CN 203822793U 'sealed quick release lock' is taken as an example, so that the lock is a sealed, quick-dismantling and anti-falling lock, has ingenious conception, can realize the purpose of the invention and meets specific use requirements.

The basic principle of the patent is as follows: the flat screwdriver is clamped into a rotating groove at the top of the pin, so that the ejector rod moves axially along the inner hole of the pin, the stop slide block is propped against, the pin rotates for 90 degrees clockwise, a wedge block at the end part of the pin and the inner wall of a rectangular hole of the lock seat sleeve form 90-degree dislocation locking, the screwdriver is loosened, the stop slide block is reset, and a wedge block long groove on the stop slide block is clamped with the wedge block at the end part of the pin, so that the pin is locked in an anti-rotation and anti-falling way.

By analysing the internal structure of this patent it can be seen that in theory there is a certain floating space in the distance and position between the fixing sleeve and the fixing part (also understood as between the pin and the lock sleeve), which allows a certain play in axial and radial direction after assembly, similar to a flexible connection. In actual use, the rubber gaskets are used for isolation, so that the function of interface sealing is achieved. Therefore, the device is suitable for occasions requiring low assembly precision and needing reliable anti-falling performance, such as sealing and fixing of hatches, sealing doors, sealing flaps and the like with sealing rubber gaskets.

The sealing quick-release lock can achieve the aim of sealing the quick-release lock and preventing the quick-release lock from falling, but cannot achieve the purposes of tightly locking the position and preventing loosening, and cannot enable the assembly and the equipment frame to form a higher rigid body, so that the sealing quick-release lock is not suitable for mounting and fixing general electronic equipment, and cannot solve the technical problems mentioned in the invention.

Disclosure of Invention

The invention aims to solve the problems that the component cannot be locked quickly after being pushed into place, the component cannot be prevented from being ejected or displaced, the component cannot be tightly fixed, the component and the equipment frame cannot form a higher rigidity body, and the fixing measures are difficult to be prevented from loosening or even falling out to fail.

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

the utility model provides a quick lock locking fastener, including the installation panel, nut storehouse body and screw, the surface activity of screw has cup jointed national standard bullet pad, the inside swing joint of screw has the ejector pin, the surface activity of screw has cup jointed the knob, the surface activity of knob has cup jointed the pressure spring, the other end surface activity of knob has cup jointed the plectrum, pressure spring spacing groove and plectrum return groove have been seted up respectively to the both sides of installation panel, plectrum return groove and pressure spring spacing groove communicate each other, pressure spring swing joint is in the inside of pressure spring spacing groove, plectrum swing joint is in the inside of plectrum return groove, the position discernment groove has been seted up to the one end that the knob kept away from the plectrum, the one end that the screw kept away from the position discernment groove is provided with the pawl, the surface of plectrum is provided with two plectrum pothooks and four riveting notch that are annular design respectively, the position and the size mutually matched with riveting piece are seted up at the one end of keeping away from the position discernment groove of knob, the plectrum passes through the riveting notch and riveting piece cup joints at the one end of knob, the plectrum is in the plectrum pothook joint at the inside of plectrum return groove; the inner wall of the nut bin body is respectively and movably connected with a floating nut, a rotation stopping block and a spring, one end of the spring is movably connected with one side of the inner wall of the nut bin body, the other end of the spring is movably connected with one side of the rotation stopping block, which is far away from the spring, is movably connected with one end of the floating nut, one side of the nut bin body is provided with a nut bin cover, the other side of the nut bin cover is provided with a sheet pressure spring, the other side of the sheet pressure spring is provided with a baffle sheet, the other side of the baffle sheet is provided with a national standard countersunk rivet, one end of the national standard countersunk rivet, which is close to the baffle sheet, passes through the baffle sheet, the sheet pressure spring, the nut bin cover and the nut bin body and extends to one side of the nut bin body, which is far away from the nut bin cover, the baffle sheet, the sheet pressure spring and the nut bin cover are all fixedly connected with the surface of the nut bin body, one side of the nut bin cover, which is close to the baffle sheet is far away from the rotation stopping block, one side of the baffle sheet pressure spring is provided with a damping bump, the damping bump is movably connected with the surface of the baffle sheet, one side of the nut bin cover, which is close to the baffle sheet, and one end, which is far away from the spring, and one end of the spring is far away from the spring; two equipment frame beams are fixed at the positions, close to the top and the bottom, of one side of the installation panel, and an assembly is arranged between the two equipment frame beams.

Preferably: the installation panel and the installation have two connection modes, one is the installation behind the board, and the other is the embedding before the board, and screw, knob, pressure spring, plectrum, ejector pin, national standard bullet pad, installation panel, plectrum reset groove, pressure spring spacing groove, plectrum pothook, position discernment groove, riveting piece, riveting notch and pawl constitute the screw combination, and separation blade, slice pressure spring, nut bin lid, nut bin body, floating nut, stop the piece of revolve, spring, national standard countersunk rivet, stop the piece conical surface, plectrum rotation groove and damping bump combination become the nut combination, and the shape and the size of screw combination and nut combination are mutually matched with the two connection modes of installation behind the board and the embedded shape and size before the board.

Preferably: the shape of the plectrum reset groove is matched with the shape of the plectrum clamping hook.

Preferably: the shape of the rotation stop block is square.

Preferably: grooves matched with the pawl in shape and size are formed in the surface of the conical surface of the rotation stop block.

By adopting the technical scheme, the invention has the following advantages:

the invention is suitable for electronic equipment which adopts elastic blind insertion interconnection, and uses a quick locking and anti-loosening fastening device: 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.

Drawings

Fig. 1 is a front view schematically showing a screw assembly and disassembly structure of a quick-locking anti-loosening fastening device.

Fig. 2 is a rear view schematically showing a screw assembly and disassembly structure of the quick-locking fastening device.

Fig. 3 is a sectional view of a screw assembly assembled to a mounting panel in a quick lock anti-loosening fastening device.

Fig. 4 is a front view of a screw assembly assembled to a mounting panel in a quick lock anti-loosening fastening device.

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

Fig. 6 is a riveting view of a knob and a pulling piece in the quick locking and anti-loosening fastening device.

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

Fig. 8 is an assembled sectional view of a nut assembly installed behind a middle plate of a quick lock anti-loose fastening device.

Fig. 9 is a schematic structural view of a sheet compression spring in the quick locking fastening device.

Fig. 10 is a schematic structural view of a nut housing cover in the quick-locking anti-loose fastening device.

Fig. 11 is a schematic structural view of a stop screw of the quick lock anti-loosening fastening device.

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

Fig. 13 is a sectional view of a nut assembly assembled by the front insert of the middle plate of the quick lock anti-loose fastening device.

Fig. 14 is an assembly relationship diagram of a component of a rear mounting nut combination of a middle plate of a quick lock anti-loose fastening device and a cross beam of an equipment frame.

Fig. 15 is a cross-sectional view of a device frame cross-beam employing a post-plate mounting nut combination in a quick lock anti-loosening fastening device.

Fig. 16 is a side cross-sectional view of a device frame cross-beam employing a post-plate mounting nut combination in a quick lock anti-loosening fastening device.

Fig. 17 is a cross-sectional view of a device frame cross beam using a panel front nut assembly in a quick lock anti-loosening fastening device.

Fig. 18 is a side cross-sectional view of a device frame cross-beam using a panel front nut assembly in a quick lock anti-loosening fastening device.

Detailed Description

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.

Referring to fig. 1 to 18, in an embodiment of the present invention, a quick-locking and anti-loosening fastening device includes the following embodiments:

example 1

The novel riveting device comprises a mounting panel 8, a nut bin body 20 and a screw 2, wherein a national standard elastic pad 7 is movably sleeved on the surface of the screw 2, a push rod 6 is movably connected inside the screw 2, a knob 3 is movably sleeved on the surface of the screw 2, a pressure spring 4 is movably sleeved on the surface of the knob 3, a plectrum 5 is movably sleeved on the other end surface of the knob 3, a pressure spring limit groove 10 and a plectrum reset groove 9 are respectively formed in two sides of the mounting panel 8, the plectrum reset groove 9 and the pressure spring limit groove 10 are mutually communicated, the pressure spring 4 is movably connected inside the pressure spring limit groove 10, the plectrum 5 is movably connected inside the plectrum reset groove 9, a position recognition groove 12 is formed in one end surface of the knob 3 far away from the plectrum 5, a pawl 15 is arranged at one end surface of the screw 2 far away from the position recognition groove 12, two plectrum hooks 11 and four riveting notch 14 in annular design are respectively arranged on the surface of the plectrum 5, a riveting 13 which is mutually matched with the position and the size of the riveting notch 14 is formed in one end surface of the knob 3 far away from the position recognition groove 12, the plectrum 5 is sleeved on one end surface of the plectrum 3 through the riveting notch 14 and the riveting notch 13, and the position recognition groove 11 is connected inside the plectrum 9 through the position recognition groove 11; the inner wall of the nut bin 20 is respectively and movably connected with a floating nut 21, a rotation stopping block 22 and a spring 23, one end of the spring 23 is movably connected with one side of the inner wall of the nut bin 20, the other end of the spring 23 is movably connected with one side of the rotation stopping block 22, which is far away from the spring 23, is movably connected with one end of the floating nut 21, one side surface of the nut bin 20 is provided with a nut bin cover 19, the other side of the nut bin cover 19 is provided with a sheet compression spring 18, the other side of the sheet compression spring 18 is provided with a baffle 17, the other side of the baffle 17 is provided with a national standard countersunk rivet 24, one end of the national standard countersunk rivet 24, which is close to the baffle 17, passes through the baffle 17, the sheet compression spring 18, the nut bin cover 19 and the nut bin cover 20 and extends to one side of the nut bin body 20, which is far away from the nut bin cover 19, the baffle 17, the sheet compression spring 18 and the nut bin cover 19 are fixedly connected with the surface of the nut bin body 20 through 24, one side surface of the nut bin cover 19, which is close to the floating nut 21, one side of the nut bin cover 22 is far away from the rotation stopping block 22, one side of the compression spring 18 is provided with a damping spring 27, and one side of the damping groove 25, which is far away from the damping groove 27, which is arranged, and is far from the movable stop groove 22, which is far from the compression spring 22; two equipment frame beams 35 are fixed at positions, close to the top and the bottom, on one side of the installation panel 8, an assembly 33 is arranged on one side, close to the top and the bottom, of the installation panel 8, and the assembly 33 is arranged between the two equipment frame beams 35.

As shown in the figure, the mounting plates of the mounting panels 8 and 35 are mounted at the rear, the screw 2, the knob 3, the pressure spring 4, the poking sheet 5, the ejector rod 6, the national standard spring pad 7, the mounting panel 8, the poking sheet reset groove 9, the pressure spring limit groove 10, the poking sheet clamping hook 11, the azimuth recognition groove 12, the riveting sheet 13, the riveting notch 14 and the pawl 15 form a screw combination, the baffle sheet 17, the sheet pressure spring 18, the nut bin cover 19, the nut bin body 20, the floating nut 21, the anti-rotation block 22, the spring 23, the national standard countersunk rivet 24, the anti-rotation block conical surface 25, the poking sheet rotating groove 26 and the damping convex point 27 are combined into a nut combination, the shape and the size of the screw combination and the connection mode of the nut combination are matched with the shape and the size of the mounting after the plate, wherein in the mounting after the plate, the screw combination is firstly used for connecting the equipment frame beam 35 with the mounting panel 8, the four-angle knobs 3 on the mounting panel 8 are rotated anticlockwise by 90 degrees, and then the screw combination is connected with the nut combination, the method is the mounting mode after the plate, the baffle sheet 17, the sheet 18, the bin cover 19 and the nut are in the mounting mode, the shape and the nut combination are not required to be actually mounted, so that the mounting stability and stability are ensured.

The shape of the plectrum reset groove 9 and the shape of the plectrum clamping hook 11 are mutually matched, so that the connection stability is enhanced.

The shape of the rotation stop block 22 is square, so that the rotation stop block 22 is prevented from rotating, and the square is not easy to rotate.

Grooves matched with the pawl 15 in shape and size are formed in the surface of the rotation stop block conical surface 25, the grooves are matched with the pawl 15, rotation of the pawl 15 is avoided, and stability is improved.

Example 2

As shown in the figure, the mounting devices of the mounting panels 8 and 35 are embedded before the plates, the same as the mounting devices after the plates are embedded before the plates, and the shapes of the baffle 17, the sheet pressure spring 18, the nut bin cover 19 and the nut bin body 20 are different, the mounting modes are used for matching the different mounting panels 8, the components 33 and the device frame cross beam 35 so as to quickly mount, the screw 2, the knob 3, the pressure spring 4, the plectrum 5, the ejector rod 6, the national standard spring pad 7, the mounting panel 8, the plectrum reset groove 9, the pressure spring limit groove 10, the plectrum clamping hook 11, the position identification groove 12, the riveting piece 13, the riveting notch 14 and the pawl 15 are combined into a screw combination, and the shapes and the sizes of the baffle 17, the sheet pressure spring 18, the nut bin cover 19, the nut bin body 20, the floating nut 21, the anti-rotation block 22, the spring 23, the national standard countersunk rivet 24, the anti-rotation block conical surface 25, the plectrum rotating groove 26 and the damping bump 27 are combined into a nut combination, and the shapes and the sizes of the screw combination and the shapes and the sizes of the connection modes of the shapes and the sizes of the nut combination are mutually matched.

The shape of the plectrum reset groove 9 is matched with the shape of the plectrum clamping hook 11.

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

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

The operation method of the invention is as follows:

firstly, a matched mounting hole is needed to be prefabricated on a component mounting panel 8, the mounting hole is characterized in that a pressure spring limiting groove 10 is arranged on the front surface, a shifting piece reset groove 9 is arranged on the back surface, a pressure spring 4 is placed in the pressure spring limiting groove 10 on the front surface of the matched mounting hole, a knob 3 is placed from the front surface of the mounting panel 8, the pressure spring 4 and the panel matched mounting hole are penetrated, a shifting piece 5 is sleeved at the tail part of the knob 3 on the back surface of the mounting panel 8 and is tightly riveted, two shifting piece clamping hooks 11 on the shifting piece 5 are needed to be aligned with two position identification grooves 12 on the end part of the knob 3 in an angle, riveting pieces 13 on the knob 3 and riveting notches 14 on the shifting piece 5 are needed to be tightly attached, and after the riveting is performed in an expanding mode, the shifting piece 5 is restored to the shifting piece reset groove 9 on the back surface of the mounting panel 8 under the support of the pressure spring 4. Secondly, penetrating the ejector rod 6 into an inner hole of the screw from the tail of the screw 2, riveting the root of a hexagonal groove at the head of the screw 2 by 90 degrees Kong Nazhang to form a whole, and sleeving the national standard spring pad 7 on the pin rod of the screw 2. Finally, the integral screw is screwed into the inner ring of the knob 3 which is assembled previously, and the assembly process of the screw combination 1 is completed.

The invention relates to two sets of schemes about nut combination design, one set is a nut combination 16 suitable for mounting after the board, one set is a nut combination 16 suitable for embedding before the board, except that the baffle 17, the sheet compression spring 18, the nut bin cover 19 and the nut bin body 20 are different in appearance, the floating nut 21, the rotation stop block 22 and the spring 23 are universal parts, the assembly process and scheme principle of the two sets of scheme accessories are the same, the assembly process of the nut combination mounted after the board is analyzed by taking the nut combination 16 as an example as follows:

placing a spring 23 into the bottom of a nut bin body A20, placing a rotation stopping block 22 in a direction, contacting and clamping the spring 23, placing a floating nut 21 in the direction, enabling the floating nut to be matched with conical surfaces 25 of the rotation stopping block on the rotation stopping block 22, sequentially covering a nut bin cover A19, a sheet compression spring A18 and a baffle plate A17, paying attention to the forward and reverse directions of all parts, enabling a pulling piece rotating groove 26 of the nut bin cover A19 to be outwards, symmetrically arranging two groups of four damping protruding points 27 on the sheet compression spring A18 inwards, enabling countersunk holes at four corners of the baffle plate A17 to be outwards, simultaneously enabling the positions of the 3 parts to be aligned with the nut bin body A20, and finally enabling the 3 parts to pass through corresponding through holes at four corners of the baffle plate A17, the sheet compression spring A18, the nut bin cover A19 and the nut bin body A20, and riveting and leveling the assembling process of the nut combination A16 installed after finishing the plate.

The following is a specific application scheme of the nut assembly 16 and the screw assembly mating assembly installed behind the plate, so as to understand how to use the quick locking and loosening prevention fastening device to achieve the purpose of the invention, and the scheme is divided into two parts, namely, 1. An assembly: after the assembly is inserted into the equipment frame, the assembly is locked and then the screw is screwed, 2. The assembly is disassembled: before the component is pulled out from the equipment frame, the screw is unscrewed and then the component is unlocked;

after the assembly is inserted into the equipment frame, locking the assembly and screwing the screw;

the quick lock assembly acts as follows:

after the assembly is inserted into the equipment frame in place, the knob 3 is pinched and pushed in, the pressure spring 4 is pressed, the knob 3 is pushed in place along the axial direction of the knob, at the moment, the shifting sheet 5 integrated with the knob 3 moves forwards along with the pushing of the knob 3, passes through the corresponding position gaps of the blocking sheet 17 and the sheet pressure spring 18, enters the shifting sheet rotating groove 26 on the nut bin cover 19, rotates the knob 3 by 90 degrees anticlockwise, rotates the shifting sheet 5 by 90 degrees synchronously, the resistance of two groups of four symmetrical damping convex points 27 on the sheet pressure spring 18 must be overcome in the process of rotating the shifting sheet 5 by 90 degrees, then the shifting sheet is stopped at the position of 90 degrees, and the two prescription position identification grooves 12 at the end part of the knob 3 are in a vertical state, so that the assembly is locked at a fast position, and the assembly is prevented from being ejected or displaced from the equipment frame;

the action process of screwing the screw and the principle of preventing the screw from loosening are as follows:

the hexagonal socket wrench is inserted into the hexagonal groove at the head of the screw 2, the end face of the hexagonal socket wrench simultaneously props against the ejector rod 6 to axially displace forwards, the hexagonal socket wrench is rotated clockwise, the screw thread of the screw 2 is screwed with the floating nut 21, the wrench is rotated continuously, along with the increase of the engagement depth, the end part of the ejector rod 6 is contacted with and props against the rotation stopping block 22 gradually, the wrench is rotated continuously at the moment to screw the screw 2, and the rotation stopping block 22 compresses the spring 23 to move forwards against resistance force until the screw 2 is screwed last. Taking out the inner hexagonal wrench, enabling the rotation stopping block 22 to move back under the release of the elastic force of the spring 23, enabling four grooves on the rotation stopping block 22 to clamp the tail parts of the screws 2 to form four pawls 15, pushing back the ejector rod 6, enabling the outer shape of the rotation stopping block 22 and the inner cross section of the nut bin body 20 contacted with the rotation stopping block to be square, actually preventing the rotation stopping block 22 from risk, enabling the four grooves on the rotation stopping block 22 to clamp the tail parts of the screws 2 to form four pawls 15, and under the elastic force of the spring 23, preventing the retraction position of the rotation stopping block 22 from causing failure of clamping action, enabling the pawls 15 to trip, and fundamentally and effectively preventing the screws 2 from loosening and falling off;

before the component is pulled out from the equipment frame, the screw is unscrewed and then the component is unlocked;

the action process of unlocking and unscrewing the screw is as follows:

the socket head wrench is inserted into the hexagonal groove at the head of the screw 2, the end face of the socket head wrench simultaneously props against the ejector rod 6 to axially displace forwards, the end part of the ejector rod 6 props against the rotation stopping block 22 and the compression spring 23 moves forwards against resistance, four grooves on the rotation stopping block 22 are tripped with the pawls 15 at the tail of the screw 2, the purpose of unlocking the screw 2 is achieved, at the moment, the screw 2 can rotate, and the socket head wrench is rotated anticlockwise, so that the screw 2 is separated from the floating nut 21.

The unlocking component acts as follows:

the knob 3 is pinched and rotated 90 degrees clockwise, the pulling piece 5 integrated with the knob 3 is synchronously rotated 90 degrees, the resistance of two symmetrical groups of four damping convex points 27 on the pressing spring 18 is overcome in the process of rotating the pulling piece 5 by 90 degrees, then the pressing piece is stopped at the 90-degree position, the two-position identification grooves 12 at the end part of the knob 3 are in a horizontal state, at the moment, the pressing spring 4 can generate release of force and support the knob 3 to move outwards, the knob 3 is pulled outwards in a clockwise direction, the pulling piece 5 is synchronously moved outwards, and returns to the pulling piece reset groove 9 on the back surface of the mounting panel 8, so that the unlocking component is completed, and finally the component can be pulled out from the equipment frame.

Claims

1. The utility model provides a locking fastener of quick lock, including installation panel (8), nut storehouse body (20) and screw (2), a serial communication port, the surface activity of screw (2) has cup jointed national standard bullet pad (7), the inside swing joint of screw (2) has ejector pin (6), the surface activity of screw (2) has cup jointed knob (3), the surface activity of knob (3) has cup jointed pressure spring (4), the other end surface activity of knob (3) has cup jointed plectrum (5), pressure spring spacing groove (10) and plectrum return groove (9) have been seted up respectively to the both sides of installation panel (8), plectrum return groove (9) and pressure spring spacing groove (10) intercommunication each other, pressure spring (4) swing joint is in the inside of pressure spring spacing groove (10), inside of plectrum (5) swing joint at plectrum return groove (9), position discernment groove (12) are seted up to the one end face that plectrum (5) were kept away from to knob (3), the one end that position discernment groove (12) were kept away from to screw (2) is provided with pawl (15), the surface activity of plectrum (5) has been provided with two plectrums (11) respectively and four grab (11) and four and is the one end that the riveting groove (14) that are designed in the big position of being kept away from of the mutual position of the die (13), the plectrum (5) is sleeved on one end face of the knob (3) through a riveting notch (14) and a riveting piece (13), and the plectrum (5) is clamped in the plectrum reset groove (9) through a plectrum clamping hook (11); the inner wall of the nut bin body (20) is respectively and movably connected with a floating nut (21), a rotation stopping block (22) and a spring (23), one end of the spring (23) is movably connected with one side of the inner wall of the nut bin body (20), the other end of the spring (23) is movably connected with one side of the rotation stopping block (22), one side of the rotation stopping block (22) far away from the spring (23) is movably connected with one end of the floating nut (21), one side surface of the nut bin body (20) is provided with a nut bin cover (19), the other side of the nut bin cover (19) is provided with a sheet compression spring (18), the other side of the sheet compression spring (18) is provided with a baffle (17), the other side of the baffle (17) is provided with a national standard countersunk rivet (24), one end of the national standard countersunk rivet (24) close to the baffle (17) penetrates through the baffle (17), the sheet compression spring (18), the nut bin cover (19) and the nut bin body (20) and extends to one side of the nut bin body (20) far away from the nut bin cover (19), the compression spring (17), the sheet (18) and the nut bin cover (19) are fixedly connected with one side of the nut bin cover (19) close to the surface of the floating nut (20) near the surface of the nut bin body (20), a damping convex point (27) is arranged on one side of the sheet pressure spring (18) close to the baffle sheet (17), the damping convex point (27) is movably connected with the surface of the baffle sheet (17), a poking sheet rotating groove (26) is formed on one side of the nut bin cover (19) close to the sheet pressure spring (18), and a rotation stopping block conical surface (25) is formed at one end of the rotation stopping block (22) far away from the spring (23); two equipment frame beams (35) are fixed at positions, close to the top and the bottom, of one side of the installation panel (8), an assembly (33) is arranged on one side, close to the 35, of the installation panel (8), and the assembly (33) is arranged between the two equipment frame beams (35).

2. The quick-locking fastening device according to claim 1, wherein the mounting of the mounting panels (8) and (35) has two connection modes, one is board rear mounting, the other is board front embedding, the screw (2), the knob (3), the pressure spring (4), the plectrum (5), the ejector rod (6), the national standard spring pad (7), the mounting panel (8), the plectrum reset groove (9), the pressure spring limit groove (10), the plectrum clamping hook (11), the azimuth identifying groove (12), the riveting piece (13), the riveting notch (14) and the pawl (15) form a screw combination, and the baffle (17), the sheet pressure spring (18), the nut bin cover (19), the nut bin body (20), the floating nut (21), the anti-rotation block (22), the spring (23), the national standard countersunk rivet (24), the anti-rotation block conical surface (25), the plectrum rotating groove (26) and the damping bump (27) are combined into a nut combination, and the shape and the size of the screw combination and the connection modes of the board rear mounting and the board front embedding are matched.

3. The quick-lock anti-loosening fastening device according to claim 1, wherein the shape of the plectrum reset groove (9) and the shape of the plectrum clamping hook (11) are matched with each other.

4. A quick lock anti-loosening fastening device as claimed in claim 1, wherein the anti-rotation block (22) is square in shape.

5. A quick lock anti-loosening fastening device as claimed in claim 1, wherein the surface of the anti-rotation block conical surface (25) is provided with grooves matched with the shape and the size of the pawl (15).