Integrated locker of LRM module

Abstract

The invention discloses an integrated locker of an LRM module, the integrated locker comprises a locking strip and a pulling assisting device, the locking strip is of a three-section structure, and the locking strip is composed of a left short section locking groove, a long section locking groove and a right short section locking groove which are in slope fit in sequence; a locking pin shaft is assembled in the locking strip, and the long-section locking groove is in sliding fit with the locking pin shaft, so that the long-section locking groove can protrude out of the surface of the locking strip; a spring piece is assembled in the middle of the locking pin shaft and matched with the long section locking groove. A driving shaft is arranged at the left end of the locking pin shaft, a first spring sleeves the driving shaft, and a connecting hole is formed in the locking pin shaft; the pulling assisting device comprises a main body and a pulling assisting duck head arranged at the right end of the main body; a push rod linked with the spring bolt is arranged on the side surface of the main body; a rotating shaft connected with the end of the driving shaft is arranged in the pulling-assisting duck head, in the rotating process of the pulling-assisting device, the driving shaft drives the locking pin shaft to move towards the left side, and the long-section locking groove protrudes out of the surface of the locking strip.

Description

Technical Field

[0001] The invention relates to the field of circuit structure design, and in particular to an integrated locking device for an LRM module. Background Art

[0002] At present, many aircraft use the second-generation avionics system structure based on LRU (field replaceable unit). This avionics system has a complex structure, long R&D cycle, high cost, poor system reliability and complex maintenance. In order to solve this series of problems, the United States began to launch the Gem Pillar and Gem Platform programs at the end of the last century. The direct result is the third-generation and fourth-generation integrated avionics systems used on new generation fighters such as F-22 and F-35. The integrated avionics system has good openness, low life cycle cost, good reliability and compatibility. The hardware basis of the above advantages is LRM (Line Replaceable Module, field replaceable module).

[0003] In view of the advantages of LRM structure, the number of applications of LRM modules is increasing year by year, and at the same time, the requirements for field maintenance time of the products are getting higher and higher; therefore, higher requirements are placed on the plug-in device that determines the reliability of LRM module installation and rapid maintenance.

[0004] Currently, the locking structures of circuit boards on the market all adopt the independent design of locking strips and pull-out aids. The installation method of the locking strips requires the use of a tool screwdriver to complete the removal of the circuit board, which makes it difficult to achieve rapid removal of the circuit board. Summary of the invention

[0005] The object of the present invention is to provide an integrated locking device for an LRM module, so as to overcome the problem in the prior art that additional tools are required for installation and disassembly.

[0006] In order to achieve the above tasks, the present invention adopts the following technical solutions:

[0007] An integrated locking device for an LRM module, comprising a locking strip and a pull-out aid, wherein:

[0008] The locking strip is a three-section structure, which is composed of a left short-section locking groove, a long-section locking groove and a right short-section locking groove that are matched in sequence; a locking pin is installed in the locking strip, the right end of the locking pin is fixed in the right short-section locking groove, and the remaining part is installed in the long-section locking groove and the left short-section locking groove, and the locking pin can slide axially relative to the left short-section locking groove, and the long-section locking groove and the locking pin are slidably matched, so that the long-section locking groove can protrude from the surface of the locking strip; a spring groove is opened in the middle of the locking pin, in which a spring sheet is installed, and the spring sheet cooperates with the long-section locking groove; a driving shaft is provided at the left end of the locking pin, and a first spring is mounted on the driving shaft, and the two ends of the first spring are respectively supported on the left end of the locking pin and the end of the left short-section locking groove; a connecting hole is provided on the locking pin;

[0009] The pull-out aid comprises a main body and a pull-out aid duck head arranged at the right end of the main body; a locking tongue is elastically assembled in the main body, and the locking tongue can be extended from the left end of the main body or retracted into the main body, and a push rod linked to the locking tongue is arranged on the side of the main body; a rotating shaft connected to the end of the driving shaft is arranged in the pull-out aid duck head, and during the rotation of the pull-out aid, the locking pin shaft is driven to move to the left side through the driving shaft to compress the first spring, and under the auxiliary action of the spring sheet, the long section locking groove protrudes from the surface of the locking strip.

[0010] Furthermore, the locking strip as a whole is a rectangular groove structure, the cross section is a "concave" shape, and the length of the long locking groove is greater than that of the other two locking grooves.

[0011] Furthermore, the locking pin is an integrated structure, and a limit slider is provided at the lower end of the locking pin, so that the cross-section of the locking pin is a T-shaped structure; and the inside of the groove of the long section locking groove of the locking strip is provided with a limit card edge; when the long section locking groove slides relative to the locking pin until the limit slider contacts the limit card edge, it cannot continue to slide.

[0012] Furthermore, after the locking pin is installed into the locking strip, a locking screw is screwed into the right short section locking groove and the locking hole at the right end of the locking pin to fix the locking pin to the right short section locking groove.

[0013] Furthermore, the spring sheet is a raised structure in the middle, and both ends of the spring sheet are supported in the spring groove, and the spring sheet cooperates with the limit card edge of the long section locking groove; when the long section locking groove does not protrude from the surface of the locking strip, the raised structure of the spring sheet is pressed down by the limit card edge, so that the spring sheet as a whole is in a pressed down state; and when the locking pin shaft as a whole slides to the left relative to the left short section locking groove, under the action of the elastic restoring force of the pressed raised structure of the spring sheet, the limit card edge will be pushed, thereby driving the long section locking groove to protrude outward.

[0014] Furthermore, the main body of the pull-out aid is a strip-shaped structure with an assembly cavity inside, in which the lock tongue is slidably installed, and a second spring is arranged between the end of the assembly cavity; under the action of the second spring, the end of the lock tongue can extend from the left end of the main body; a push rod groove is opened on the bottom surface of the main body, in which a push rod is installed, and the push rod is connected to the lock tongue; by driving the push rod, the lock tongue can be retracted into the inside of the main body.

[0015] Furthermore, the duck-pulling-assisting head is a rounded rectangular structure with a strip groove on its side, and the drive shaft passes through the strip groove and is connected to the rotating shaft; the rotating shaft is arranged across the duck-pulling-assisting head, and the distance A between the rotating shaft and the right side surface of the duck-pulling-assisting head is smaller than the distance B between the rotating shaft and the top surface of the duck-pulling-assisting head.

[0016] Furthermore, the connecting hole on the locking pin shaft in the lock is fixedly connected to the shell of the LRM module, and then the LRM module is inserted into the slot of the LRM chassis; the pull-out aid is rotated, and during the rotation of the pull-out aid duck head of the pull-out aid, the locking pin shaft will be driven to move to the left through the driving shaft, and the first spring is compressed; the movement process will be converted into the relative sliding of the inclined surfaces between the long section locking groove and the left short section locking groove and the right short section locking groove, so that the long section locking groove protrudes outward; during the protruding process, the spring sheet in a compressed state will push the long section locking groove under the action of the elastic restoring force; the outwardly protruding long section locking groove presses against the side wall of the LRM chassis to restrict the LRM module; thereafter, the locking tongue is first driven into the main body of the pull-out aid by the push rod, and then the end of the main body is rotated to the side of the LRM chassis block, and then the push rod is released, and the locking tongue pops out of the main body of the pull-out aid and is stuck on the side of the LRM chassis block, so as to achieve the purpose of locking the LRM module.

[0017] Compared with the prior art, the present invention has the following technical features:

[0018] The present invention has a small volume and more effectively utilizes limited space; the pull-out aid and the locking strip are designed as an integrated whole, the pull-out aid can be fixed on the LRM chassis partition, and impact and vibration are not likely to cause the LRM module to fall out; the LRM module can be quickly disassembled manually without the aid of any tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention after disassembly;

[0022] Figure 4 This is a schematic diagram of the present invention in an unused state (the long section locking groove is not protruding outward);

[0023] Figure 5 It is a schematic diagram of the actual object of the present invention in the application state (the long section locking groove is convex outward).

[0024] Explanation of the numbers in the figure: 1 puller, 2 locking strip, 11 main body, 12 puller duck head, 13 locking tongue, 14 push rod, 15 rotating shaft, 16 strip groove, 17 push rod groove, 18 mounting hole, 21 left short section locking groove, 22 right short section locking groove, 23 long section locking groove, 24 locking pin, 25 first spring, 26 driving shaft, 27 limit clamp edge, 28 spring sheet, 29 connecting hole, 210 locking screw. DETAILED DESCRIPTION

[0025] See attached Figure 1 and Figure 2 The present invention provides an integrated locking device for an LRM module, comprising a locking strip 2 and a pull-out aid 1, wherein:

[0026] 1. Locking strip 2

[0027] The locking strip 2 is a three-section structure, which is composed of a left short-section locking groove 21, a long-section locking groove 23 and a right short-section locking groove 22 in sequence. In the initial state, the three are on an axis. A locking pin 24 is installed in the locking strip 2, and the right end of the locking pin 24 is fixed in the right short-section locking groove 22. The rest of the locking pin 24 is installed in the long-section locking groove 23 and the left short-section locking groove 21. The locking pin 24 can slide axially relative to the left short-section locking groove 21, and the long-section locking groove 23 and the locking pin 24 are slidingly engaged. The locking pin 24 is provided with a spring groove in the middle, in which a spring sheet 28 is installed, and the two ends of the spring sheet 28 are supported at the two ends of the spring groove, and the spring sheet 28 cooperates with the long section locking groove 23; a driving shaft 26 is provided at the left end of the locking pin 24, and a first spring 25 is mounted on the driving shaft 26, and the two ends of the first spring 25 are respectively supported at the left end of the locking pin 24 and the end of the left short section locking groove 21; a connecting hole 29 is provided on the locking pin 24.

[0028] See attached Figure 1 The locking strip 2 in this scheme is a rectangular groove structure as a whole, and its cross section is in the shape of a "concave" character; it is composed of three sections: a left short-section locking groove 21, a long-section locking groove 23 and a right short-section locking groove 22, and the length of the long-section locking groove 23 is greater than the other two locking grooves; wherein, the left end of the left short-section locking groove 21 and the right end of the right short-section locking groove 22 are both plane ends, while the right end of the left short-section locking groove 21, the left end of the right short-section locking groove 22, and both ends of the long-section locking groove 23 are all inclined surfaces, for example, inclined surfaces of 45°; in this way, the long-section locking groove 23 can slide relative to the left short-section locking groove 21 and the right short-section locking groove 22, and protrude from the surface of the locking strip 2.

[0029] The locking pin 24 is an integrated structure, and a limit slider is provided at the lower end of the locking pin 24, so that the cross-section of the locking pin 24 is a T-shaped structure; and the long section locking groove 23 of the locking strip 2 is internally provided with a limit card edge 27; when the long section locking groove 23 slides relative to the locking pin 24 until the limit slider contacts the limit card edge 27, it cannot continue to slide, thereby limiting the outward protrusion range of the long section locking groove 23 and preventing the long section locking groove 23 from slipping off the locking strip 2.

[0030] During actual installation, after the locking pin 24 is installed into the locking strip 2 , the locking screw 210 is screwed into the right short section locking groove 22 and the locking hole at the right end of the locking pin 24 to fix the locking pin 24 to the right short section locking groove 22 .

[0031] The spring sheet 28 is a raised structure with an arch or other shape in the middle. The spring sheet 28 can be an arch structure or a cap structure in a natural state. Both ends of the spring sheet 28 are supported in the spring groove. The spring sheet 28 cooperates with the limit clamping edge 27 of the long section locking groove 23. Figure 1 In the state shown in the figure, that is, when the long section locking groove 23 does not protrude from the surface of the locking strip 2, the raised structure of the spring piece 28 is pressed down by the limit clamping edge 27, so that the spring piece 28 is in a pressed down state as a whole; and when the locking pin shaft 24 slides to the left relative to the left short section locking groove 21 as a whole, under the action of the elastic restoring force of the pressed raised structure of the spring piece 28, the limit clamping edge 27 is pushed, thereby driving the long section locking groove 23 to protrude outward, playing a role in assisting the long section locking groove 23 to protrude outward.

[0032] The locking pin shaft 24 is provided with connecting holes 29 on the left and right end sides for connecting with the housing of the LRM module to be locked.

[0033] 2. Pull-out aid 1

[0034] The pull-out aid 1 is an L-shaped structure, comprising a main body 11 and a pull-out aid duck head 12 arranged at the right end of the main body 11; a locking tongue 13 is elastically assembled in the main body 11, and the locking tongue 13 can be extended from the left end of the main body 11 or retracted into the main body 11, and a push rod 14 linked to the locking tongue 13 is arranged on the side of the main body 11; a rotating shaft 15 connected to the end of the driving shaft 26 is arranged in the pull-out aid duck head 12, and during the rotation of the pull-out aid 1, the locking pin 24 is driven to move to the left side by the driving shaft 26 to compress the first spring 25, and with the auxiliary action of the spring sheet 28, the long section locking groove 23 protrudes from the surface of the locking strip 2.

[0035] The main body 11 of the pull-out aid 1 is a strip-shaped structure, and an assembly cavity is provided inside the main body 11. The lock tongue 13 is slidably installed in the assembly cavity, and a second spring is arranged between the end of the assembly cavity; under the action of the second spring, the end of the lock tongue 13 can extend from the left end of the main body 11; a push rod groove 17 is provided on the bottom surface of the main body 11, and a push rod 14 is arranged in the push rod groove 17, and the push rod 14 is connected to the lock tongue 13; by driving the push rod 14, the lock tongue 13 can be retracted into the main body 11; see Figure 1 In order to facilitate the installation of the lock tongue 13 and the push rod 14, a mounting hole 18 is provided on the top surface of the main body 11. After the lock tongue 13 is inserted into the assembly cavity through the second spring, the lock tongue 13 is connected to the lower push rod 14 by screws to achieve its installation and fixation.

[0036] The duck head 12 is a rounded rectangular structure, and a strip groove 16 is provided on its side. The drive shaft 26 passes through the strip groove 16 and is connected to the rotating shaft 15; the rotating shaft 15 is arranged across the duck head 12, see Figure 1 The distance A between the rotating shaft 15 and the right side of the duck head 12 is smaller than the distance B between the rotating shaft 15 and the top surface of the duck head 12, so that when the pulling aid 1 rotates as a whole,

[0037] The contact surface of the duck head 12 with the left short section locking groove 21 is transitioned from the right side surface of the duck head 12 to the top surface of the duck head 12 through a rounded corner. In this process, since the position of the rotating shaft 15 moves to the left, the locking pin shaft 24 will be driven to move to the left as a whole through the driving shaft 26.

[0038] 3. The working process of the present invention is as follows:

[0039] In the initial state of the lock Figure 1 , Figure 2 , Figure 4 As shown, at this time, the main body 11 of the extraction aid 1 does not rotate, and the left short section locking groove 21, the long section locking groove 23 and the right short section locking groove 22 are on the same axis, and the long section locking groove 23 does not protrude outward.

[0040] The connecting hole 29 on the locking pin 24 in the lock is fixedly connected to the housing of the LRM module, and then the LRM module is inserted into the slot of the LRM chassis; the auxiliary puller 1 is rotated, and during the rotation of the auxiliary puller duck head 12 of the auxiliary puller 1, the locking pin 24 is driven to move to the left through the driving shaft 26, and the first spring 25 is compressed; since the locking pin 24 is fixed to the housing of the LRM module, the movement process will be converted into a relative sliding of the inclined surfaces between the long section locking groove 23 and the left short section locking groove 21 and the right short section locking groove 22, so that the long section locking groove 23 protrudes outward; the protrusion During the process, the spring sheet 28 in the compressed state will push the long locking groove 23 under the action of the elastic restoring force to play an auxiliary role; the protruding long locking groove 23 presses against the side wall of the LRM chassis to restrict the LRM module; after that, the lock tongue 13 is first driven into the main body 11 of the auxiliary puller 1 by the push rod 14, and then the end of the main body 11 is rotated to the side of the LRM chassis block, and then the push rod 14 is released, and the lock tongue 13 pops out of the main body 11 of the auxiliary puller 1 and is stuck on the side of the LRM chassis block, so as to achieve the purpose of locking the LRM module. The final use state of the locker is as follows Figure 5 shown.

[0041] When removing the LRM module, first pull the push rod 14 to retract the locking tongue 13 into the main body 11, then rotate the main body 11 of the puller 1 to extend the first spring 25, drive the long section locking groove 23 to reset, and compress the spring sheet 28, and finally restore it to the initial state and take out the puller 1.

[0042] The above design can realize the quick disassembly of the LRM module. Compared with the original locking strip 2 design, the present invention has the advantages of small size, good fixing effect, and quick disassembly of the LRM module can be realized manually.

[0043] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An integrated locking device for an LRM module, characterized in that: It comprises a locking strip (2) and an extraction aid (1), wherein: The locking strip (2) is a three-section structure, which is composed of a left short section locking groove (21), a long section locking groove (23) and a right short section locking groove (22) which are matched with each other in an inclined manner in sequence; a locking pin shaft (24) is installed in the locking strip (2), the right end of the locking pin shaft (24) is fixed in the right short section locking groove (22), and the remaining part is installed in the long section locking groove (23) and the left short section locking groove (21); the locking pin shaft (24) can slide axially relative to the left short section locking groove (21), and the long section locking groove (23) and the locking pin shaft (24) are in a sliding fit. , so that the long section locking groove (23) can protrude from the surface of the locking strip (2); a spring groove is provided in the middle of the locking pin shaft (24), in which a spring sheet (28) is installed, and the spring sheet (28) cooperates with the long section locking groove (23); a driving shaft (26) is provided at the left end of the locking pin shaft (24), and a first spring (25) is mounted on the driving shaft (26), and the two ends of the first spring (25) are respectively supported on the left end of the locking pin shaft (24) and the end of the left short section locking groove (21); a connecting hole (29) is provided on the locking pin shaft (24); The pull-out aid (1) comprises a main body (11) and a pull-out aid duck head (12) arranged at the right end of the main body (11); a locking tongue (13) is elastically mounted in the main body (11), and the locking tongue (13) can be extended from the left end of the main body (11) or retracted into the main body (11); a push rod (14) linked to the locking tongue (13) is arranged on the side of the main body (11); a rotating shaft (15) connected to the end of the driving shaft (26) is arranged in the pull-out aid duck head (12); during the rotation of the pull-out aid (1), the locking pin shaft (24) is driven to move to the left side through the driving shaft (26) so that the first spring (25) is compressed, and under the auxiliary action of the spring sheet (28), the long section locking groove (23) protrudes from the surface of the locking strip (2).

2. The integrated locking device of the LRM module according to claim 1, characterized in that: The locking strip (2) is a rectangular groove structure as a whole, and its cross section is in the shape of a "concave" character, and the length of the long locking groove (23) is greater than that of the other two locking grooves.

3. The integrated locking device of the LRM module according to claim 1, characterized in that: The locking pin (24) is an integrated structure, and a limit slider is provided at the lower end of the locking pin (24), so that the cross section of the locking pin (24) is a T-shaped structure; and a limit clamping edge (27) is provided inside the notch of the long section locking groove (23) of the locking strip (2); when the long section locking groove (23) slides relative to the locking pin (24) until the limit slider contacts the limit clamping edge (27), it cannot continue to slide.

4. The integrated locking device of the LRM module according to claim 1, characterized in that: After the locking pin (24) is installed into the locking strip (2), a locking screw (210) is screwed into the right short section locking groove (22) and the locking hole at the right end of the locking pin (24) to fix the locking pin (24) and the right short section locking groove (22).

5. The integrated locking device of the LRM module according to claim 1, characterized in that: The spring sheet (28) is a raised structure in the middle, and both ends of the spring sheet (28) are supported in the spring groove. The spring sheet (28) cooperates with the limiting edge (27) of the long section locking groove (23); when the long section locking groove (23) does not protrude from the surface of the locking strip (2), the raised structure of the spring sheet (28) is pressed down by the limiting edge (27), so that the spring sheet (28) is in a pressed down state as a whole; and when the locking pin shaft (24) as a whole slides to the left relative to the left short section locking groove (21), under the action of the elastic restoring force of the pressed raised structure of the spring sheet (28), the limiting edge (27) is pushed, thereby driving the long section locking groove (23) to protrude outward.

6. The integrated locking device of the LRM module according to claim 1, characterized in that: The main body (11) of the pull-out aid (1) is a strip-shaped structure, and an assembly cavity is provided inside the main body. The lock tongue (13) is slidably installed in the assembly cavity, and a second spring is arranged between the end of the assembly cavity; under the action of the second spring, the end of the lock tongue (13) can extend from the left end of the main body (11); a push rod groove (17) is provided on the bottom surface of the main body (11), and a push rod (14) is arranged in the push rod groove (17), and the push rod (14) is connected to the lock tongue (13); by driving the push rod (14), the lock tongue (13) can be retracted into the main body (11).

7. The integrated locking device of the LRM module according to claim 1, characterized in that: The duck head (12) is a rounded rectangular structure, and a strip groove (16) is provided on its side. The driving shaft (26) passes through the strip groove (16) and is connected to the rotating shaft (15); the rotating shaft (15) is arranged transversely through the duck head (12), and the distance A between the rotating shaft (15) and the right side surface of the duck head (12) is smaller than the distance B between the rotating shaft (15) and the top surface of the duck head (12).

8. The integrated locking device of the LRM module according to claim 1, characterized in that: The connecting hole (29) on the locking pin shaft (24) in the locking device is fixedly connected to the housing of the LRM module, and then the LRM module is inserted into the slot of the LRM chassis; the auxiliary extraction device (1) is rotated, and during the rotation of the auxiliary extraction duck head (12) of the auxiliary extraction device (1), the locking pin shaft (24) is driven to move to the left side through the driving shaft (26), and the first spring (25) is compressed; the movement process is converted into relative sliding of the inclined surfaces between the long section locking groove (23) and the left short section locking groove (21) and the right short section locking groove (22), so that the long section locking groove (23) protrudes outward; during the protrusion process, The spring sheet (28) in a compressed state will push the long locking groove (23) under the action of the elastic restoring force; the outwardly protruding long locking groove (23) will press against the side wall of the LRM chassis to restrict the LRM module; then, the locking tongue (13) is first driven into the main body (11) of the auxiliary extraction device (1) by the push rod (14), and then the end of the main body (11) is rotated to the side of the LRM chassis block, and then the push rod (14) is released, and the locking tongue (13) pops out of the main body (11) of the auxiliary extraction device (1) and is stuck on the side of the LRM chassis block, thereby achieving the purpose of locking the LRM module.

Images