CN112993719B

CN112993719B - Integrated avionics module locking extractor

Info

Publication number: CN112993719B
Application number: CN202110183884.9A
Authority: CN
Inventors: 何林涛; 杨德春; 张宗安
Original assignee: Southwest Electronic Technology Institute No 10 Institute of Cetc
Current assignee: Southwest Electronic Technology Institute No 10 Institute of Cetc
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-12-06
Anticipated expiration: 2041-02-10
Also published as: CN112993719A

Abstract

The invention discloses an integrated avionic module locking extractor, and relates to a plug locking device for an external field replaceable module, which is mainly used for airborne electronic equipment. The invention is realized by the following technical scheme: the pulling-out component (5) utilizes the counterforce generated by the contact pressure between the roller (7) arranged at the tail end and the clamping groove of the equipment case as the assistance force for inserting/pulling out the electronic module, so as to realize the rapid inserting/pulling-out of the electronic module; the pressing block (4) can axially and linearly slide along the sliding rail (2) at the top of the wedge-shaped locking assembly (1), and the pressing block (4) is pushed to compress the wedge-shaped locking assembly (1) when the pulling assembly (5) rotates around the pin shaft (3); a hand-dialing block (15) of the pulling-up assembly 5 is dialed to switch the insertion and locking working modes, so that the module insertion and locking are completed by two steps; when the module is locked, the pulling assembly is fixed by tightening the hand screw (14), so that the wedge-shaped locking assembly is kept in a compression locking state, and the locking limit of the module is realized.

Description

Integrated avionics module locking extractor

Technical Field

The invention relates to a puller which is mainly used for an aviation LRM (Line Replaceable Module) electronic Module, is free from tool operation and has plugging and locking functions.

Background

With the development of integrated avionics systems, highly integrated field replaceable electronic modules LRM are increasingly used, which generally have the same standard physical dimensions and mechatronic interfaces. The LRM module needs to be installed or dismantled from the equipment chassis at job site or outfield fast, and there is engaging force or separating force when the electric connector of module inside and the electric connector of equipment chassis motherboard cooperate, and plug device IED's effect is exactly to provide and overcome this kind of electric connector required plug power when meshing or separating, is essential important part in the LRM module application, the movement track when guaranteeing electronic module loading and unloading is the straight line and slides, thereby guarantee that the external force that electronic module receives can not transmit and cause mechanical damage or electrical property inefficacy on the electric connector terminal. The LRM module needs a reliable locking device to be installed inside the chassis after being inserted, whether the locking device can be correctly fixed or not is related to whether the point signals of the module and the equipment can normally work or not, and particularly in an aviation platform, whether the locking device bears complex environmental stress or not and whether the requirement of environmental adaptability can be met is an important index for measuring the plugging and unplugging of the locking device. According to the requirements of a certain aviation platform, a tool-free puller with plugging and locking functions is required to be designed for an LRM electronic module.

Currently, LRM electronic modules mostly use a scheme that a locking device and a plugging device are independent of each other. The plugging device only has the function of plugging the electronic module out of the equipment case, can only play the initial limiting function of the electronic module, and cannot lock the electronic module. In order to deal with the severe environmental conditions of the aviation platform, a locking device is required to be assembled to fix the module on the equipment frame, and the conventional locking device generally needs tools such as a screwdriver and the like to operate, so that the time is consumed, and the operation is very inconvenient.

Disclosure of Invention

The invention aims to solve the problems that the existing puller of an LRM electronic module can only realize plugging and unplugging but cannot simultaneously lock the electronic module, and provides an integrated avionic module puller which can simultaneously realize plugging and unplugging and lock and is free from tool operation and mainly used for an avionic LRM electronic module.

The technical scheme adopted by the invention to solve the problems is as follows: an integrated avionic module locking and pulling device is used for inserting, locking and pulling an LRM electronic module into a slot of an equipment case, the top of a wedge-shaped locking component 1 is provided with a slide rail 2 and a pressing block 4 which is embedded in the slide rail 2 and is provided with a shifting fork, the slide rail 2 provided with a pin hole at the head is connected into a fork lug groove of a pulling component 5 through a pin shaft 3, and an L-shaped locking pulling component which takes the fork lug hole as a fulcrum and rotates around the pin shaft 3 is formed; and pressing/pulling out the pulling-up component 5, wherein the pulling-up component 5 rotates around the pin shaft 3, the roller 7 at the tail part of the pulling-up component 5 simultaneously enters the slot of the equipment case, and the roller 7 utilizes the reaction force generated by the contact pressure of the slot as the assistance force for assisting the insertion/pulling-out of the electronic module, so that the electronic module can be rapidly inserted/pulled out.

Compared with the prior art, the invention has the following beneficial effects:

the head of the wedge-shaped locking assembly 1 is provided with the sliding rail 2, the pulling assembly 5 is arranged in a head pin hole of the sliding rail 2 through the pin shaft 3, the pressing block 4 is embedded in the middle of the sliding rail 2 to form an integral L-shaped locking pulling assembly, and the wedge-shaped locking pulling assembly has the advantages of compact structure, high vibration resistance and long service life.

The invention adopts the manual dialing block 15 of the dialing component 5 to switch the two working modes of inserting and locking the locking dialing device, and the inserting and locking are carried out by two steps in sequence, thereby avoiding the problem that the module needs to additionally resist the locking friction force when being inserted, reducing the pressing force when the electronic module is inserted, and the dialing component 1 of the locking dialing device can be directly operated by hands to insert, lock and unlock the electronic module without tools such as a screwdriver and the like, and the operation is convenient.

Drawings

FIG. 1 is an exploded view of the integrated avionics module locking extractor of the present invention;

FIG. 2 is a schematic three-dimensional profile of FIG. 1;

FIG. 3 is an exploded view of the pull-up assembly 5;

FIG. 4 is a schematic illustration of the insertion step of the present invention;

FIG. 5 is a schematic diagram of the switching step of the present invention;

FIG. 6 is a schematic view of the locking step of the present invention;

fig. 7 is a forward schematic view of fig. 6.

In the figure: 1-wedge-shaped locking component, 2-sliding rail, 3-pin shaft, 4-pressing block, 5-pulling component, 6-pulling rod, 7-roller, 8-sliding block, 9-screw, 10-stop reed, 11-rivet, 12-anti-pulling-out check ring, 13-locking washer, 14-hand-tightening screw, 15-hand-pulling block, 16-top block, 17-stop block, 18-equipment case rib and 19-screw hole.

The invention is described in further detail below with reference to the figures and the embodiments.

Detailed Description

See fig. 1-3. In the preferred embodiment described below, an integrated avionic module locking and pulling device is used for inserting, locking and pulling an LRM electronic module into a slot of an equipment case, a slide rail 2 and a pressing block 4 which is embedded in the slide rail 2 and is provided with a shifting fork are arranged at the top of a wedge-shaped locking assembly 1, the slide rail 2 with a pin hole at the head is connected into a fork lug groove of a pulling assembly 5 through a pin shaft 3, and an L-shaped locking pulling assembly which rotates around the pin shaft 3 by taking the fork lug hole as a fulcrum is formed; and pressing/pulling out the pulling-up component 5, wherein the pulling-up component 5 rotates around the pin shaft 3, the roller 7 at the tail part of the pulling-up component 5 simultaneously enters the slot of the equipment case, and the roller 7 utilizes the reaction force generated by the contact pressure of the slot as the assistance force for assisting the insertion/pulling-out of the electronic module, so that the electronic module can be rapidly inserted/pulled out. In the locking mode, when the pulling-up component 5 is pressed to rotate around the pin shaft 3, the pressing block 4 is pushed to compress the wedge-shaped locking component 1 to generate locking force; when the electronic module is locked, the pulling assembly 5 is fixed by screwing the hand-tightening screw 14, and then the fixed pressing block 4 continuously compresses the wedge-shaped locking assembly 1, so that the wedge-shaped locking assembly 1 is kept in a compression locking state, and the locking limit of the module is realized.

See fig. 3. The pulling assembly 5 comprises: a roller 7 arranged at the tail part of the pulling rod 6; the manual tightening screw 14 is arranged at the free end of the pulling rod 6, the manual tightening screw 14 is provided with a locking washer 13 and an anti-disengagement check ring 12, and the anti-disengagement check ring 12 is used for preventing the manual tightening screw 14 from disengaging from the pulling rod 6 in a free state; the sliding block 8 is in threaded connection with a hand shifting block 15 through a screw 9, is clamped and installed in a sliding rail groove in the middle of the pulling rod 6, and is driven to longitudinally move left and right in the sliding rail groove of the pulling rod 6 by shifting the hand shifting block 15; the stop spring 10 is fixed to two side edges of the slide rail groove in the middle of the pulling rod 6 through the rivet 11, provides friction force for the slide block 8, and prevents the slide block 8 from freely sliding in the slide rail groove in the middle of the pulling rod 6.

Referring to fig. 4-7, the electronic module is installed in the slot of the chassis according to the embodiment, which is divided into three steps of inserting, switching and locking.

In the insertion step: the hand shifting block 15 is shifted upwards to drive the sliding block 8 to move in the direction A shown in figure 4, and the sliding block 8 is separated from the shifting fork on the pressing block 4, so that the pressing block 4 is in a non-pressure-transmitting state; force F is applied to the front end of the pulling rod 6, the pulling rod 6 rotates anticlockwise by taking the pin shaft 3 as a fulcrum, the roller 7 touches the side wall of the top block 16 in the slot of the equipment case by utilizing the lever principle, and the electronic module is driven to be inserted into the equipment case by the reverse acting force F1 of the side wall of the top block 16.

In the switching step: after the electronic module is inserted into the equipment case, the hand-tightening screw 14 is dragged, the pulling rod 6 is pulled out and rotates clockwise around the pin shaft 3 to the position shown in the figure 5, the roller 7 is in non-pressure contact with the stop block 17, the hand-pulling block 15 is pulled downwards, the sliding block 8 is driven to move in the direction B shown in the figure 5, the sliding block 8 is in contact with the shifting fork of the pressing block 4, and the pressing block 4 is in a pressure transmission state.

In the locking step: after a force F is applied to the free end of the pulling rod 6, the pulling rod 6 shown in the figure 6 rotates anticlockwise by taking the pin shaft 3 as a fulcrum, the sliding block 8 is driven to push the pressing block 4 to slide linearly along the sliding rail 2 in the axial direction, and the wedge-shaped cylinder of the wedge-shaped locking assembly 1 shown in the figure 7 is compressed to radially extrude a rib 18 of the equipment case to generate a locking friction force; finally, the hand-tightening screw 14 is screwed to the screw hole 19 of the electronic module, the locking washer 13 generates pretightening force on the hand-tightening screw 14, the hand-tightening screw 14 is prevented from loosening under the vibration impact condition, the wedge-shaped locking assembly 1 is kept in a compressed state, and therefore the electronic module is fixedly locked in the equipment case.

After the screw 14 is screwed off by hand of the locking extractor in the locking state, the wedge-shaped locking component 1 is naturally separated from the rib 18 of the equipment cabinet due to the loss of pressure support, so that unlocking is realized.

The scope of the invention is not limited to the specific embodiments described. Various modifications to these embodiments described above will be readily apparent to those skilled in the art. The general principles defined by the present invention may be implemented in other embodiments without departing from the spirit or scope of the invention. Any technical solutions obtained by performing the same or equivalent replacement of technical elements in the described specific technical solutions or technical solutions obtained by a person skilled in the art without creative efforts on the basis of the described specific technical solutions should be considered to fall within the protection scope of the present invention.

Claims

1. An integrated avionics module locking extractor, comprising: a wedge locking assembly (1) for inserting, locking and extracting an LRM electronic module into a slot of an equipment chassis, into said slot, characterized in that: the top of the wedge-shaped locking assembly (1) is provided with a sliding rail (2) and a pressing block (4) which is embedded in the sliding rail (2) and is provided with a shifting fork, the sliding rail (2) with a pin hole at the head is connected in a fork lug groove of the pulling assembly (5) through a pin shaft (3), and an L-shaped locking pulling assembly which takes the fork lug hole as a fulcrum and rotates around the pin shaft (3) is formed; pressing/pulling out the pulling-out component (5), wherein the pulling-out component (5) rotates around the pin shaft (3), the roller (7) at the tail of the pulling-out component (5) simultaneously enters the slot of the equipment case, and the roller (7) uses the reaction force generated by the contact pressure of the slot as the assistance for assisting the insertion/pulling-out of the electronic module to realize the rapid insertion/pulling-out of the electronic module; wherein:

locking pull-out ware is installed electronic module in the equipment machine case, divide into according to the order and inserts, switch and locking three step, in the step of inserting, upwards dial hand shifting block (15), drive sliding block (8) and remove to A direction, sliding block (8) break away from the shift fork on briquetting (4), be in non-transmission pressure state, at this moment, through exerting pressure F to the pull-out pole (6) free end, pull-out pole (6) use round pin axle (3) as the fulcrum anticlockwise rotation, lateral wall that kicking block (16) in the equipment machine case slot was touched in gyro wheel (7) utilization lever principle, receive kicking block (16) lateral wall counter-acting force F1, drive electronic module and insert equipment machine case.

2. The integrated avionics module locking extractor of claim 1, further comprising: the pulling assembly (5) comprises: the gyro wheel (7) of rising dead lever (6) afterbody assembly, fix hand tight screw (14) on rising dead lever (6) free end through anticreep retaining ring (12) and lock washer (13), through screw (9) spiro union sliding block (8) and hand shifting block (15), fix on rising dead lever (6) middle part slide rail groove upper and lower both sides face through rivet (11) riveting, for sliding block (8) provide frictional force, prevent its free gliding locking reed (10), drive sliding block (8) through stirring hand shifting block (15) and vertically remove about in the slide rail inslot of rising dead lever (6).

3. The integrated avionics module locking extractor of claim 1, further comprising: the pressing block (4) is located between the wedge-shaped locking assembly (1) and the pulling assembly (5), a shifting fork extending into a middle sliding groove of the pulling assembly (5) is manufactured, and the sliding block (8) is driven to be separated from/contacted with the shifting fork through the hand shifting block (15) so as to switch two working modes of inserting and locking of the locking pulling device.

4. The integrated avionics module locking extractor of claim 1, further comprising: in the switching step, drag tight screw of hand (14) and extract pull-out pole (6) and wind round pin axle (3) clockwise rotation to certain angle, gyro wheel (7) turn to with dog (17) inside wall contact, the shift fork of briquetting (4) breaks away from wedge locking subassembly (1) slide rail groove, then dial hand shifting block (15) and drive sliding block (8) and remove to B direction, the shift fork of sliding block (8) contact briquetting (4) is used for transmitting pressure, realize locking the function switching of pull-out ware.

5. The integrated avionics module locking extractor of claim 4, wherein: in the locking step, after the free end of the pulling rod (6) applies force F, the pulling rod (6) rotates anticlockwise by taking the pin shaft (3) as a fulcrum, the sliding block (8) is driven to push the pressing block (4) to slide linearly along the sliding rail (2) in the axial direction, the wedge-shaped cylinder of the wedge-shaped locking assembly (1) is compressed, the rib (18) of the equipment case is radially extruded, and the rib (18) generates extrusion locking friction force; then screw up hand tight screw (14) and screw up in electronic module's screw (19), fixed briquetting (4) continue compression wedge locking Assembly (1), make wedge locking Assembly (1) keep in compression locking state, and simultaneously, lock washer (13) produce the pretightning force to hand tight screw (14), avoid hand tight screw (14) to loosen under the vibration impact condition, keep wedge locking Assembly (1) in compression state to realize that electronic module fixes the locking in equipment machine incasement.

6. The integrated avionics module locking extractor of claim 1, further comprising: after a screw (14) of the locking extractor in a locking state is unscrewed, the wedge-shaped locking assembly (1) is naturally separated from a rib (18) of the equipment cabinet due to the loss of pressure support, and unlocking is realized.

7. The integrated avionics module locking extractor of claim 1, further comprising: in the locking mode, when the pulling-up component 5 is pressed to rotate around the pin shaft 3, the pressing block 4 is pushed to compress the wedge-shaped locking component 1 to generate locking force; when the electronic module is locked, the pulling assembly 5 is fixed by screwing the hand-tightening screw 14, and then the fixed pressing block 4 continuously compresses the wedge-shaped locking assembly 1, so that the wedge-shaped locking assembly 1 is kept in a compression locking state, and the locking limit of the module is realized.