High vibration resistant quick lock base

Abstract

The present invention relates to a high vibration-resistant quick-locking base, comprising a tail retaining ring, an outer ring spring, an inner ring spring, a locking base, a fork-shaped piece, a pin shaft, and an open retaining ring; the outer ring spring is sleeved outside the inner ring spring to form an elastic mechanism and is installed in the locking base, the shaft of the fork-shaped piece is inserted into the inner ring spring from the anti-rotation waist-shaped hole Ⅰ at one end of the locking base and is threadedly connected with the tail retaining ring 1 installed at the other end of the locking base, the fork-shaped piece cooperates with the locking base and the tail retaining ring to realize the compression of the outer ring spring and the inner ring spring installed in the locking base, and provide a pre-tightening force during locking; the pin shaft is installed in the fork-shaped piece seat for locking with the locking hook at the handle end of the device. The present invention can realize the rapid locking and unlocking of the device, has a reliable locking force for the device, has an automatic compensation effect, can meet the fixed installation requirements of the device in a high vibration level and long-term vibration environment, and can also meet the fixed installation of devices of different tolerance levels and sizes.

Description

Technical Field

[0001] The invention relates to the technical field of connection and locking, in particular to a high-vibration-resistant quick-locking base. Background Art

[0002] There are two ways to fix airborne electronic equipment: bolt installation and quick-release installation. The advantages of bolt installation are firm and reliable installation and good vibration resistance, while the disadvantages are troublesome disassembly and assembly, time-consuming and labor-intensive, and poor maintainability. The advantages of quick-release installation are simple disassembly and assembly, good maintainability, while the disadvantages are poor vibration resistance. In a high vibration level environment, the locking structure is prone to wear and breakage, and the vibration reduction and buffering effect of the locking structure is not good, which affects the reliable fixation of electronic equipment and signal transmission.

[0003] With the development of my country's aviation industry, the requirements for the vibration resistance of airborne electronic equipment are getting higher and higher, and the requirements for the vibration resistance time are also getting longer and longer. The traditional quick-release installation and fixing structure can no longer meet the high-level and long-term vibration requirements, and it is urgent to develop a high-vibration-resistant quick disassembly and locking structure. Summary of the invention

[0004] The purpose of the present invention is to provide a high-vibration-resistant quick-lock base, which can realize rapid locking and unlocking of equipment, has a reliable locking force on the equipment, has an automatic compensation effect, can meet the fixed installation requirements of electronic equipment in high vibration levels and long-term vibration environments, and can also meet the fixed installation requirements of equipment with different tolerance levels and sizes.

[0005] The present invention is specifically realized by the following technical schemes. According to the high vibration-resistant quick-locking base proposed by the present invention, it includes a tail retaining ring, an outer ring spring, an inner ring spring, a locking base, a fork-shaped piece, a pin shaft, and an open retaining ring; wherein, the outer ring spring is sleeved outside the inner ring spring to form an elastic mechanism and is installed in the locking base, and an anti-rotation waist-shaped hole I is provided at one end of the locking base; the fork-shaped piece includes a shaft and a seat portion connected and fixed to the shaft portion, the shaft portion of the fork-shaped piece is inserted from the anti-rotation waist-shaped hole I into the inner ring spring assembled in the locking base and is threadedly connected with the tail retaining ring installed at the other end of the locking base, the fork-shaped piece cooperates with the locking base and the tail retaining ring to realize the compression of the outer ring spring and the inner ring spring installed in the locking base, and provide the pre-tightening force during locking; the pin shaft is installed in the fork-shaped piece seat portion for locking with the locking hook at the handle end of the device. The above scheme can realize the rapid locking and unlocking of electronic equipment, with reliable locking force, and the spring mechanism has an automatic compensation effect, which can meet the fixed installation requirements of electronic equipment in high vibration levels and long-term vibration environments.

[0006] Furthermore, in the above-mentioned high-vibration-resistant quick-lock base, the seat portion of the fork-shaped member includes a base and a first connecting member and a second connecting member connected to the base, and the first connecting member and the second connecting member are respectively provided with a first mounting hole and a second mounting hole; a stopper is provided at one end of the pin shaft, and a stopper mounting groove is provided at the other end; the pin shaft is inserted from the first connecting member to the second connecting member so that the stopper mounting groove passes through the first mounting hole and the second mounting hole in sequence, and the stopper is installed in the stopper mounting groove and cooperates with the stopper to achieve limited fixation of the pin shaft.

[0007] In one embodiment, the first mounting hole and the second mounting hole are respectively an anti-rotation waist-shaped hole II and a round hole. Correspondingly, an anti-rotation flat round structure is provided on the pin shaft to cooperate with the anti-rotation waist-shaped hole II to play an anti-rotation role. The pin shaft is round to fit the round hole. At this time, the stopper adopts an open retaining ring, and the stopper installation groove adopts a retaining ring installation groove for installing the open retaining ring. The pin shaft is installed in the anti-rotation waist-shaped hole II1 and the round hole of the fork-shaped member, and the pin shaft is limited and fixed by the open retaining ring and the stopper. Through the above technical solution, the pin shaft is fixed to the fork-shaped member seat and the anti-rotation function is realized, which is used to cooperate with the equipment locking hook for locking.

[0008] In one embodiment, the shaft of the fork-shaped member is an oblate rod for cooperating with the anti-rotation waist-shaped hole I of the locking base to prevent rotation. The oblate rod can also be provided with a lightening groove for reducing weight.

[0009] Furthermore, the locking base is also provided with a mounting hole for mounting and fixing the quick-locking base as a whole to the bracket. The mounting hole can also be inlaid with a locking wire screw sleeve, which has a self-locking and anti-loosening performance and is used to meet the high-level vibration anti-loosening requirements.

[0010] Furthermore, the internal thread inside the tail retaining ring and the external thread of the fork-shaped shaft can adopt MJ thread to prevent cracks from occurring during vibration and improve the load-bearing performance of the quick lock base. After the internal thread and the external thread are connected with the adapter thread, they cooperate with the fork-shaped seat and the locking base to compress the inner and outer springs installed in the locking base, providing a preload force during locking.

[0011] One application example of the above quick-lock base is to lock the device with the bracket. At this time, the device is fixed on the bracket, and the quick-lock base is integrally installed and fixed on the bracket through the mounting hole on the locking base. The locking hook on the locking handle on the device is hooked on the pin on the quick-lock base to achieve the locking of the device. At this time, the locking hook pulls the fork on the quick-lock base out a certain distance L. The locking force applied by the quick-lock base to the device includes the pre-tightening force of the locking base and the additional deformation of the inner and outer ring springs, thereby ensuring a reliable locking force on the device. The inner wall of the locking base is also provided with a limited step to limit the tail retaining ring to prevent the inner and outer ring springs from being over-compressed under high-level vibration, impact, and acceleration conditions in the locked state, resulting in excessive vibration displacement of the electronic equipment. When unlocking, pull the locking handle to separate the locking hook from the pin to achieve unlocking.

[0012] Beneficial technical effects of the present invention:

[0013] (1) The quick-lock base of the present invention adopts a large-size MJ7 threaded connection, which can enhance the vibration resistance and fatigue resistance of the quick-lock base; a spring mechanism is arranged inside, which, on the one hand, has a large tolerance for the external dimensions of the device and can meet the fixed installation of electronic equipment of different tolerance levels and sizes; on the other hand, the quick-lock base has a buffering and vibration isolation effect, which can attenuate a part of the vibration excitation transmitted to the electronic equipment from the outside, has a protective effect on the electronic equipment and its internal components, and simultaneously improves the vibration resistance of the electronic equipment.

[0014] (2) After the present invention is fixed to the bracket, it can realize the rapid locking and unlocking of the electronic device; after locking, the locking hook of the device pulls the fork-shaped part out a certain distance L. At this time, the locking force applied to the device by the quick lock base includes the pre-tightening force of the locking base and the additional deformation of the inner and outer ring springs, thereby ensuring a larger locking force. The limiting step on the inner wall of the locking base can limit the tail retaining ring to prevent the inner and outer ring springs from being over-compressed under high-level vibration, impact, and acceleration conditions in the locked state, resulting in excessive vibration displacement of the electronic device.

[0015] (3) The present invention can achieve reliable locking of electronic equipment and meet high-level vibration requirements by adjusting the preload force of the locking base and selecting a suitable pull-out length L. The preload force of the locking base can be adjusted by the position of the threaded connection between the rear retaining ring and the fork-shaped member, and the pull-out length L can be adjusted by the installation position of the quick-lock base on the bracket.

[0016] (4) Once the existing rigid locking system produces wear effects, the wear will accelerate sharply and cause equipment damage due to the lack of self-compensation effect. In the present invention, when wear occurs during high-level vibration and causes the pull-out length L to change, the inner and outer springs inside the quick-lock base have an automatic compensation effect, and reliable locking can still be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the common quick-release installation and fixing methods;

[0018] Figure 2 is an exploded view of the high vibration-resistant quick-lock base of the present invention;

[0019] Figure 3 yes Figure 2 Sectional view after assembly;

[0020] Figure 4 It is the main view of the tail retaining ring and its AA section view;

[0021] Figure 5 1 is a schematic diagram of the structure of the locking base, (a) is a side view of the locking base, (b) is an AA sectional view of (a), and (c) is a bottom view of (a);

[0022] Figure 6 It is a schematic diagram of the structure of the fork;

[0023] Figure 7 It is a schematic diagram of the structure of the pin shaft;

[0024] Figure 8 It is a schematic diagram of the structure of the open retaining ring;

[0025] Fig. 9 It is a schematic diagram of the installation and locking of the quick-lock base, the chassis and the bracket of the present invention.

[0026] 1-tail retaining ring, 2-outer ring spring, 3-inner ring spring, 4-locking base, 5-fork-shaped piece, 6-pin shaft, 7-open retaining ring, 8-limiting step, 9-anti-rotation waist-shaped hole I, 10-external thread, 11-internal thread 11, 12-base, 13-first connecting piece, 14-second connecting piece, 15-anti-rotation waist-shaped hole II, 16-round hole, 17-stopper, 18-anti-rotation flat round structure, 19-retaining ring mounting groove, 20-mounting hole, 21-lightening groove, 22-center hole, 23-opening, 24-equipment, 25-bracket, 26-locking handle, 27-locking hook, 28-flat round rod. DETAILED DESCRIPTION

[0027] In order to better understand the content of the present invention, the present invention will be further described below in conjunction with specific embodiments and drawings. The following embodiments are implemented based on the technology of the present invention, and detailed implementation methods and operating steps are given, but the protection scope of the present invention is not limited to the following embodiments.

[0028] like Figure 2As shown, the high vibration-resistant quick-lock base provided by the present invention specifically comprises: a tail retaining ring 1, an outer ring spring 2, an inner ring spring 3, a locking base 4, a fork-shaped member 5, a pin 6, and an open retaining ring 7. Among them, the outer ring spring 2 is sleeved outside the inner ring spring 3 to form an elastic mechanism and is installed in the locking base 4. One end of the locking base 4 is open for assembling the tail retaining ring 1. The inner wall of the opening is also provided with a limited position step 8. The other end of the locking base is provided with an anti-rotation waist-shaped hole Ⅰ9, as shown in FIG. Figure 5 As shown. The fork-shaped member 5 includes a shaft and a seat, one end of the shaft is connected and fixed to the seat, the other end of the shaft is provided with an external thread 10, and the center of the tail retaining ring 1 is provided with an internal thread 11. The shaft of the fork-shaped member is inserted into the inner coil spring 3 of the elastic mechanism assembled in the locking base 4 from the anti-rotation waist-shaped hole Ⅰ, and is threadedly connected with the tail retaining ring 1. One end of the locking base cooperates with the seat of the fork-shaped member to stop and limit, and the tail retaining ring is installed at the other end of the locking base and is threadedly tightened with the shaft of the fork-shaped member. The fork-shaped member cooperates with the locking base and the tail retaining ring to realize the compression of the outer coil spring 2 and the inner coil spring 3 installed in the locking base, providing a pre-tightening force during locking. After the fork-shaped member is assembled in the locking base, the outer coil spring 2 and the inner coil spring 3 are in a compressed state.

[0029] The shaft of the fork is a flat round rod used to cooperate with the anti-rotation waist-shaped hole I of the locking base to prevent the electronic equipment from tipping over when it vibrates laterally. The seat of the fork includes a base 12 and a first connecting member 13 and a second connecting member 14 connected to the base. The first connecting member, the second connecting member and the base form a U-shaped seat, such as Figure 6 As shown. The first connecting member and the second connecting member are respectively provided with an anti-rotation waist-shaped hole II 15 and a round hole 16. The pin shaft 6 is installed on the seat of the fork-shaped member for locking with the locking hook at the handle end of the electronic device. A stopper 17 and an anti-rotation flat round structure 18 are provided at one end of the pin shaft, and a retaining ring mounting groove 19 is provided at the other end. The pin shaft is circular for matching with the round hole on the second connecting member, and the minimum aperture of the anti-rotation waist-shaped hole II is slightly larger than the diameter of the pin shaft. The pin shaft is inserted from the first connecting member to the second connecting member so that the retaining ring mounting groove passes through the anti-rotation waist-shaped hole II and the round hole in turn. Finally, the anti-rotation flat round structure on the pin shaft is assembled in the anti-rotation waist-shaped hole II, and the two cooperate to play an anti-rotation role and enhance the anti-vibration performance. The open retaining ring 7 is installed in the retaining ring mounting groove, and the pin shaft is limited and fixed by the open retaining ring and the stopper on the pin shaft.

[0030] Furthermore, the locking base 4 is also provided with a mounting hole 20 for mounting and fixing the quick lock base as a whole to the bracket. A locking wire screw sleeve is embedded in the mounting hole, which has a self-locking and anti-loosening performance and can meet the high-level vibration anti-loosening requirements.

[0031] In order to improve the fatigue resistance of the threaded connection, the internal thread of the tail retaining ring 1 and the external thread of the fork shaft are both MJ threads. In one embodiment, the internal thread and the external thread are both MJ7 threads. The large-sized MJ7 thread can prevent cracks from occurring during vibration and further improve the load-bearing performance.

[0032] The shaft of the fork is also provided with a lightening groove 21 for reducing weight. The open retaining ring includes at least an opening and a center hole 22. Under the action of external force, the opening angle will increase, thereby being stuck on the retaining ring mounting groove to achieve the fixation of the pin shaft. At least one opening 23 can also be connected to the center hole to increase the deformation of the retaining ring. Figure 8 shown.

[0033] The principle of the present invention for assembling and locking the equipment and the bracket is as follows: the equipment 24 is fixed on the bracket 25, the quick-lock base is integrally fixed on the bracket through the mounting hole on the locking base, a locking hook 27 is provided at the tail of the locking handle 26 on the equipment, the locking handle is hinged to the equipment bracket and can rotate around the axis on the bracket, and the rotation direction of the handle is opposite to the rotation direction of the locking hook. Fig. 9 As shown, push the handle toward the device, the locking hook moves in the opposite direction and hooks on the pin of the quick lock base, and the handle position is fixed by the trigger to achieve locking. At this time, the locking hook pulls the fork on the quick lock base out a certain distance L. At this time, the locking force applied by the quick lock base to the device includes the pre-tightening force of the locking base and the additional deformation of the inner and outer ring springs:

[0034] F 锁紧 =F 预紧力 +K·L

[0035] K: Total stiffness of inner and outer coil springs; L: Pull-out length of the fork after locking.

[0036] The limiting step on the inner wall of the locking base is used to limit the tail retaining ring to prevent the spring from being over-compressed under high-level vibration, impact, and acceleration conditions in the locked state, resulting in excessive vibration displacement of the electronic equipment.

[0037] When unlocking, pull the handle away from the device, and the locking hook moves in the opposite direction, separating the locking hook from the pin shaft to achieve unlocking.

[0038] The present invention can achieve reliable locking of electronic equipment and meet high-level vibration requirements by adjusting the preload force of the locking base and selecting a suitable pull-out length L. The preload force of the locking base can be adjusted by the position of the threaded connection between the tail retaining ring and the fork-shaped piece, and the pull-out length L can be adjusted by the installation position of the quick-lock base on the bracket. Fig. 9 For example, if the quick lock base is installed in the direction of Fig. 9 If it moves to the left, the pull-out length L will increase, the spring deformation will also increase, and the locking force will increase.

[0039] The quick-lock base of the present invention can realize the rapid locking and unlocking of the equipment on the one hand, and on the other hand, adopts the large-size MJ7 threaded connection to enhance the vibration resistance and fatigue resistance; the spring mechanism is arranged inside, which has a large tolerance capacity for the external dimensions of the equipment and can meet the fixed installation of electronic equipment of different tolerance levels and sizes. In addition, once the existing rigid locking produces wear effects, the wear will accelerate sharply and cause equipment damage due to the lack of self-compensation effect. In the present invention, when wear occurs during high-level vibration and causes the pull-out length L to change, the quick-lock base has an automatic compensation effect under the action of the spring force, and can still achieve reliable locking.

[0040] The above is only an embodiment of the present invention, and does not limit the present invention in any form. The present invention can also have other forms of embodiments according to the above structures and functions, which are not listed one by one. Therefore, any simple modification, equivalent change and modification made by any technician familiar with the profession to the above embodiment according to the technical essence of the present invention without departing from the scope of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. High vibration-resistant quick-lock base, characterized by The invention comprises a tail retaining ring (1), an outer ring spring (2), an inner ring spring (3), a locking base (4), a fork-shaped member (5), a pin shaft (6), and an open retaining ring (7); wherein the outer ring spring (2) is sleeved on the outer side of the inner ring spring (3) to form an elastic mechanism which is installed in the locking base (4); one end of the locking base (4) is open for assembling the tail retaining ring (1); the inner wall of the opening is also provided with a limiting step (8) for limiting the position of the tail retaining ring to prevent the inner ring spring and the outer ring spring from being over-compressed; the other end of the locking base (4) is provided with an anti-rotation waist-shaped hole I; the fork-shaped member (5) comprises a shaft portion and a shaft portion which is connected to the shaft portion. The fork-shaped member is connected to a fixed seat, the shaft of the fork-shaped member is a flat round rod used to cooperate with the anti-rotation waist-shaped hole I to play an anti-rotation role, thereby preventing the electronic equipment from overturning when it vibrates laterally; the shaft of the fork-shaped member is inserted from the anti-rotation waist-shaped hole I into the inner ring spring (3) assembled in the locking base (4) and is threadedly connected to the tail retaining ring (1) installed at the other end of the locking base. After the fork-shaped member is assembled in the locking base, the outer ring spring (2) and the inner ring spring (3) are in a compressed state, and the fork-shaped member cooperates with the locking base and the tail retaining ring to realize the outer ring spring (2) and the inner ring spring (3) installed in the locking base. 3) is compressed to provide a pre-tightening force when locking; the center hole of the tail retaining ring (1) is provided with an internal thread (11), and the shaft of the fork-shaped member is provided with an external thread (10), and both the external thread (10) and the internal thread (11) are MJ threads; the seat of the fork-shaped member includes a base (12) and a first connecting member (13) and a second connecting member (14) connected to the base, and the pin is installed on the seat of the fork-shaped member for locking with the locking hook at the handle end of the device, and the first connecting member and the second connecting member are respectively provided with an anti-rotation waist-shaped hole II (15) and a round hole (16), and one end of the pin is provided with a stopper ( 17) and an anti-rotation oval structure (18), and a retaining ring installation groove (19) is provided at the other end, the pin shaft portion is inserted from the first connecting member to the second connecting member so that the retaining ring installation groove passes through the anti-rotation waist-shaped hole II and the round hole in sequence, and the anti-rotation oval structure on the pin shaft is assembled in the anti-rotation waist-shaped hole II, and the two cooperate to play an anti-rotation role and enhance the anti-vibration performance; the open retaining ring (7) is installed in the retaining ring installation groove, and the pin shaft is limited and fixed by the open retaining ring (7) and the stopper (17); the open retaining ring includes a center hole (22), and at least one opening (23) is connected to the center hole to increase the deformation of the retaining ring.

2. The high vibration-resistant quick-lock base according to claim 1, characterized in that The shaft portion of the fork-shaped piece is provided with a lightening groove (21).

3. The high vibration-resistant quick-lock base according to claim 1, characterized in that The locking base (4) is also provided with a mounting hole (20) for fixing the quick-locking base.

4. The high vibration-resistant quick-lock base according to claim 3, characterized in that The mounting hole is inlaid with a locking wire screw sleeve, which has self-locking and anti-loosening performance and can meet the needs of high-level vibration anti-loosening.

5. The high vibration-resistant quick-lock base according to claim 1, characterized in that When the device and the bracket are locked, the device is fixed on the bracket, the quick lock base is integrally mounted and fixed on the bracket through the mounting hole (20) on the locking base, and the locking hook on the locking handle on the device is hooked on the pin shaft on the quick lock base to achieve locking. At this time, the locking hook pulls the fork-shaped piece on the quick lock base out a certain distance L; when unlocking, the locking handle is pulled to separate the locking hook from the pin shaft to achieve unlocking.

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