CN113163655A

CN113163655A - LRM module does not need instrument linkage locking pull-out device

Info

Publication number: CN113163655A
Application number: CN202110337928.9A
Authority: CN
Inventors: 陈旭; 何林涛
Original assignee: Southwest Electronic Technology Institute No 10 Institute of Cetc
Current assignee: CETC 10 Research Institute; Southwest Electronic Technology Institute No 10 Institute of Cetc
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-07-23

Abstract

The LRM module tool-free linkage locking and pulling device disclosed by the invention can realize plugging and pulling, locking and tool-free operation. The invention is realized by the following technical scheme: the spring bolt is connected with the rib of the LRM module case through a pulling block on the tail end of a pulling rocker handle, under the action of an external force F, the spring bolt is linked along the displacement direction of the pulling block, in the process that the LRM electronic module is inserted into the LRM module case, the rocker handle is manually pulled up by means of the shifting fork thrust on a revolute pair, a rotating shaft in a bent fork lug shaft hole is taken as a fulcrum, a lever is linked with a roller and a shifting fork, the roller is pulled up by means of a crank force arm on the fulcrum of the rocker handle, the roller is pulled left and right in a shifting groove of the LRM module case to drive a locker to apply push-pull pressure, and locking or unlocking of switching of pushing in/pulling out of the LRM module in a locking slot of the LRM module is realized. The invention can directly operate the locking and pulling rocker arm handle to complete the insertion/pulling-out and the locking of the electronic module without tools such as a screwdriver and the like, and has convenient operation.

Description

LRM module does not need instrument linkage locking pull-out device

Technical Field

The invention relates to a locking and pulling device with plugging and locking functions, which is mainly used for an LRM (line replaceable module) electronic module.

Background

With the development of scientific technology and the increasingly complex application environment, electronic equipment is developing towards the direction of precision, automation, scale and miniaturization, and highly integrated field replaceable electronic modules LRMs are applied more and more. A new generation of avionics field replaceable modules LRM are independent function modules that mount high speed integrated circuits vhsic (veryhigh speed integrated circuits) and very large scale integrated circuits (VLSI).

LRM modules generally have the same standard form factor and mechanical electrical interface and must be capable of direct replacement at the mission site. The scene refers to the actual use environment of the army, such as a field airport. The function of the LRM module is fundamentally different from that of the conventional printed board circuit module. The LRM must be mounted in a closed housing, which is also used because the LRM module will be mounted in an integrated chassis, which is less sealed than the ATR chassis, and which can provide other environmental protection measures such as salt spray, dust, electromagnetic compatibility, etc. The LRM module has the following basic technical features: high integration: the method is embodied in two aspects: the LRM module typically includes at least two printed boards mounted back-to-back within the module. One printed board is a general function board, the other printed board is a special function board, and the integration level of the module is very high.

The LRM module needs to be quickly installed or detached from an equipment chassis on a working site or an external field, and in order to solve the problems that the LRM module, particularly a liquid-cooled LRM module, is quickly installed and detached in an installation box and meet the increasingly harsh requirement for short-time radar maintenance, a built-in BITIMM module plugging device is usually adopted as a plugging device of the LRM module. The LRM module plugging device consists of two parts: a locking mechanism and a lock. The locking mechanism is installed on the front panel of the LRM module, the locker is installed on the module installation box, and the LRM module is quickly installed and detached on the installation box through the compression joint and the separation between the locking mechanism and the locker.

Because the engagement force or the separation force exists when the electric connector inside the module is matched with the electric connector of the equipment case motherboard, and the plugging device IED provides and overcomes the plugging force required when the electric connector is engaged or separated, the plugging device IED is an essential important component in the application of the LRM module, so that the movement track of the electronic module during loading and unloading is ensured to be linear sliding, and the external force applied to the electronic module is ensured not to be transmitted to the terminal of the electric connector to cause mechanical damage or electrical property failure. After the LRM module is inserted, a reliable locking device is required to be installed inside the chassis, whether the LRM module can be correctly fixed and locked or not is determined, and whether the point signals of the LRM module and the equipment can normally work or not is determined. According to the requirements of a certain platform, a locking and pulling assembly which is free of tool operation, has a plugging function and provides locking force needs to be designed for an LRM electronic module, but the locking requirement is not high, and the locking and pulling assembly can be used in occasions with small vibration magnitude.

Currently, the LRM electronic module mostly uses a mechanical part locking bar _ chassis extractor scheme in which a locking device and a plugging device are mutually independent. Various mechanical part locking strips have various parameters, different reliability and very high standardized level. The mechanical part locking strip is an apparatus bottom piece utilizing the largest area. Because the plugging device only has the function of plugging the electronic module out of the equipment case, the plugging device only has the function of initially limiting the electronic module and cannot lock the electronic module. In order to deal with severe environmental conditions, a locking device is required to be assembled to fix the module on the equipment frame. The conventional clamping devices such as a (screw) clamping device, a wedge clamping device, an eccentric clamping device and the like generally need tools such as a screwdriver and the like to operate, so that the operation is time-consuming and extremely inconvenient.

Disclosure of Invention

The invention aims to provide a tool-free linkage locking and pulling device of an LRM module, which can realize plugging and pulling and can not realize locking of the electronic module, aiming at the problem that the existing pulling device of the LRM electronic module can only realize plugging and pulling and can not realize locking of the electronic module.

The above object of the present invention can be achieved by the following means: a LRM module does not need instrument linkage locking extraction element, includes: insert fork ear shaft hole 11 through countersunk screw 15 to connect firmly spring tongue 16 and the rocker arm handle 13 of pulling out on LRM module machine case rib 7 journal stirrup revolute pair, set up and pull out on rocker arm handle 13 elbow fork ear and insert LRM module machine case and pull out gyro wheel 5 in groove 9, connect firmly shift fork 14 on elbow fork ear one side hole end, with the help of pulling out the locker 12 that reset spring 3 and slider 4 constitute to being connected to the thrust of rocker arm handle 13 revolute pair, its characterized in that: the spring bolt 16 is connected with the LRM module case rib 7 through the pulling block 6 on the tail end of the pulling rocker arm handle 13, under the action of an external force F, the spring bolt 16 is linked along the displacement direction of the pulling block 6, the LRM electronic module 17 is manually pulled up the rocker arm handle 13 in the process of being inserted into the LRM module case 18, the pulling rocker arm handle 13 is pulled up by the aid of the pushing force of a shifting fork 14 on a revolute pair, a rotating shaft in a bent fork earhole 11 is taken as a fulcrum, a lever is linked with a roller 5 and the shifting fork 14, the roller 5 is pulled left and right in the shifting groove 9 of the LRM module case by the aid of a crank force arm on the pulling rocker arm handle 13, a locking device 12 is driven to apply push-pull pressure, and locking or unlocking of push-in/pull-out switching of the LRM module in the LRM module locking slot 10 is achieved.

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

according to the invention, the pulling rocker arm handle 13 connected with the rib 7 can be unlocked and rotated by arranging the rollers 5 and the pulling block 6 on the head end and the tail end of the pulling rocker arm handle 13 and arranging the spring bolt 16 to be linked with the displacement direction of the pulling block 6. The LRM electronic module 17 is pushed along the upper guide rail of the LRM module case 18 by pulling up the rocker arm handle 13 and the LRM module is locked by the locking device, so that the LRM electronic module has the advantages of easiness in installation and disassembly, certain vibration resistance, long service life and the like.

In the process of inserting the LRM electronic module into the LRM module case, the rocker arm handle 13 is manually pulled up, the rocker arm handle 13 is pulled up, the lever is linked with the roller 5 and the shifting fork 14 by taking a rotating shaft on the elbow as a fulcrum, the roller 5 realizes left-right shifting in the shifting groove 9 of the LRM module case by means of a crank force arm on the fulcrum of the rocker arm handle 13, the LRM module is pushed in/pulled out, the pulling block 6 of the rocker arm handle 13 is pulled up to switch the inserting and pulling-out and locking working states of the electronic equipment, the rocker arm handle 13 can be directly locked and pulled up by hand to complete the inserting, pulling-out and locking of the electronic module, tools such as a screwdriver and the like are not needed, and the operation is convenient.

According to the invention, pressure is applied to a locking device 12 connected with a return spring 3 by virtue of the thrust of a rotating pair of a lifting rocker arm handle 13, the return spring 3 is compressed and pushes an elastic bolt sliding block 1 to linearly slide along a waist drum-shaped sliding hole of a sliding block 4, the end of the elastic bolt sliding block 1 is gradually pushed into an LRM module locking slot 10 towards a wedge-shaped inclined plane, a positive pressure component in a pressing state generated by the wedge-shaped inclined plane is transmitted to a rib 7 and generates extrusion friction force after clinging to the rib 7 and the LRM module locking slot 10, so that the LRM module is locked, otherwise, the LRM module is pulled out along the LRM module locking slot 10, and the LRM module can be detached. The LRM module quick installation, locking and disassembly device has the advantages of being free of any tool for manual disassembly and assembly, capable of achieving plugging and locking, free of tool operation, greatly shortened in maintenance time, capable of solving the problem that the LRM module is quick to install, lock and disassemble, high in standardization degree and convenient to maintain, capable of simplifying three-level maintenance into two-level maintenance, capable of improving maintainability, shortening maintenance period and maintenance time, capable of reducing life-cycle cost and capable of being popularized to like products for use.

Drawings

FIG. 1 is an exploded view of the LRM module tool-less interlock locking and extraction device of the present invention;

FIG. 2 is a partial cross-sectional top view of the connected LRM module chassis of FIG. 1;

FIG. 3 is a partial cross-sectional top view of FIG. 1 latched in an LRM module chassis;

FIG. 4 is a schematic partial cross-sectional view of the unlocked extracted state of FIG. 3;

FIG. 5 is a partial cross-sectional view of the LRM module of the present invention inserted into a pull-out slot of the LRM module chassis;

fig. 6 is a partial cross-sectional view of the LRM module plug-out LRM module chassis plug-out slot of fig. 5.

In the figure:the LRM module tool-free linkage locking and pulling device is composed of a locking device 12 and a pulling rocker handle 13, wherein the locking device 12 mainly comprises 1-an elastic bolt sliding block, 2-a countersunk rivet, 3-a return spring and 4-a slide rail. The pulling rocker arm handle 13 mainly comprises a 5-roller, a 6-pulling block, an 11-fork lug shaft hole, a 14-shifting fork and a 16-spring bolt. The other parts comprise 7-electronic equipment ribs, 8-countersunk screws of a locking device 12, 9-case drawing grooves, 10-LRM module locking slots, 15-countersunk screws for drawing a rocker arm handle 13, 17-LRM electronic modules and 18-LRM module cases.

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

Detailed Description

See fig. 1-3. In a preferred embodiment described below, an LRM module tool-less gang lock extraction apparatus comprises: the locking device is characterized in that a sunk screw 15 is inserted into a fork lug shaft hole 11, a spring bolt 16 and a pulling rocker arm handle 13 are fixedly connected to a lug rotating pair of a LRM module case rib 7, a roller 5 is arranged on an elbow fork lug of the pulling rocker arm handle 13 and is inserted into a pulling groove 9 of the LRM module case, a shifting fork 14 is fixedly connected to one side hole end of the elbow fork lug, and a locking device 12 consisting of a return spring 3 and a sliding block 4 is connected by means of the thrust of the rotating pair of the pulling rocker arm handle 13. The spring bolt 16 is connected with the LRM module case rib 7 through the pulling block 6 on the tail end of the pulling rocker arm handle 13, under the action of an external force F, the spring bolt 16 is linked along the displacement direction of the pulling block 6, the LRM electronic module 17 is manually pulled up the rocker arm handle 13 in the process of being inserted into the LRM module case 18, the pulling rocker arm handle 13 is pulled up by the aid of the pushing force of a shifting fork 14 on a revolute pair, a rotating shaft in a bent fork earhole 11 is taken as a fulcrum, a lever is linked with a roller 5 and the shifting fork 14, the roller 5 is pulled left and right in the shifting groove 9 of the LRM module case by the aid of a crank force arm on the pulling rocker arm handle 13, a locking device 12 is driven to apply push-pull pressure, and locking or unlocking of push-in/pull-out switching of the LRM module in the LRM module locking slot 10 is achieved.

The lock 12 includes: the lock bolt comprises a lock bolt sliding block 1 provided with a blind hole sliding groove and an opening sliding rail, and an I-shaped sliding block 4 with one side end surface connected with a reset spring 3, wherein an elliptic hole groove is formed on a wall plate of the I-shaped sliding groove of the sliding block 4, and a countersunk rivet 2 movably assembles the sliding block 4 in the blind hole sliding groove of the lock bolt sliding block 1 through a connecting hole in the length direction of the lock bolt sliding block 1 and the elliptic hole groove to form a locker 12. In the rotating process of pulling up the rocker handle 13 by the bolt sliding block 1, the shifting fork 14 applies pressure to the rear end face of the sliding block 4, the sliding block 4 assembled in the blind hole sliding groove of the bolt sliding block 1 is compressed by the reset spring 3, the sliding block 4 slides along the sliding rail at the bottom of the bolt sliding block 1, and a locking force is provided for locking the LRM module through the wedge-shaped face at the front end of the bolt sliding block 1. The locking force of the bolt sliding block 1 is derived from the compression force of a compression return spring 3, the return spring 3 is compressed and pushes the bolt sliding block 1 to slide linearly along the pore canal of the oval hole of the sliding block 4, the end of the elastic bolt sliding block 1 is gradually pushed into a locking slot 10 of the LRM module towards a wedge-shaped inclined plane, a positive pressure component in a compression state generated by the wedge-shaped inclined plane is transmitted to the rib 7 and closely attached to the rib 7 and the locking slot 10 of the LRM module to generate extrusion friction force, so that the LRM module is locked, otherwise, the LRM module is pulled out, and the LRM module can be detached.

The LRM module is in a compression locking state under the action of a compression return spring 3, and the return spring 3 provides certain pretightening force and enables the elastic bolt sliding block 1 to have certain scalability. When the elastic bolt sliding block 1 is in a locking working state, the compression return spring 3 can be further compressed, and the spring in the locking device 12 is in a pre-compression state in the plugging process of the LRM module.

See fig. 5. When the LRM module is inserted into the LRM module case pulling groove 9, the pulling block 6 is pulled, the pulling rocker handle 13 is driven by the force F operated by a person to rotate the roller 5 inserted into the LRM module case pulling groove 9 counterclockwise to drive the inner side wall of the roller 5LRM module case pulling groove 9 to move upwards, the spring bolt 16 is unlocked to push the LRM module out of the LRM module locking slot 10, and when the LRM module locking slot 10 is released from the locking slot, the pulling rocker handle 13 is pulled outwards until the elastic bolt sliding block 1 is completely separated from the LRM module locking slot 10. The LRM module is pulled out.

See fig. 6. The process of pulling out the LRM module by pulling out the rocker arm handle 13 is opposite to the process of inserting, the pulling-out block 6 is pulled, the rocker arm handle 13 is pulled out outwards through acting force F operated by a person, the rotating shaft of the rocker arm handle 13 is manually pulled out to rotate, the roller 5 inserted into the LRM module case pulling groove 9 rotates clockwise, the roller 5 is driven to be pulled out at the notch of the LRM module case pulling groove 9, the outer side wall moves upwards, the LRM module is pushed into the LRM module locking slot 10 and is transferred onto the LRM module case rib 7, extrusion friction force is generated after the LRM module case rib 7 and the LRM module locking slot 10 are tightly attached, and therefore the LRM module is locked by locking of the LRM module.

The spring bolt 16 is unlocked, the reaction force F1 of the LRM module locking slot 9 is right in the figure 3, in the LRM module inserting and extracting state, the LRM module slides along the inclined surface under the extrusion action of the inclined surface of the elastic bolt sliding block 1 until the action of the return spring 3 is clamped into the root part of the LRM module locking slot 10, the LRM module is installed in place, the locker 12 is not contacted with the LRM module locking slot 10, and therefore, the return spring 3 in the locker 12 is in a free state.

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 solution obtained by performing the same or equivalent replacement on technical elements in the described specific technical solution or technical solution obtained by a person skilled in the art without creative work on the basis of the described specific technical solution should be considered to fall within the protection scope of the present invention.

Claims

1. A LRM module does not need instrument linkage locking extraction element, includes: insert fork ear shaft hole (11) through countersunk head screw (15), and connect firmly spring tongue (16) and play and pull out rocking arm handle (13) on LRM module machine case rib (7) journal stirrup revolute pair, set up and pull out gyro wheel (5) that rocking arm handle (13) elbow yoke inserted in LRM module machine case pull out groove (9), connect firmly shift fork (14) on elbow yoke lug side hole end, lock ware (12) to having connected reset spring (3) and slider (4) and constitute with the help of the thrust that plays to pull out rocking arm handle (13) revolute pair, its characterized in that: the spring bolt (16) is connected with an LRM module case rib (7) through a pulling block (6) at the tail end of a pulling rocker arm handle (13), under the action of an external force F, the spring bolt (16) is linked along the displacement direction of the pulling block (6), an LRM electronic module (17) is manually pulled up to pull the rocker arm handle (13) in the process of being inserted into an LRM module case (18), the pulling rocker arm handle (13) is pulled up by means of the thrust of a shifting fork (14) on a revolute pair, a rotating shaft in an ear shaft hole 11 of a bent head fork is taken as a fulcrum, a lever is linked with a roller (5) and the shifting fork (14), the roller (5) is pulled left and right in a shifting groove (9) of the LRM module case by means of a crank arm of force on the pulling rocker arm handle (13) to drive a locker (12) to apply push-pull pressure, and locking or unlocking of pushing/pulling-out switching of the LRM module in an LRM module locking slot (10) is achieved.

2. The LRM module tool-less gang lock extraction of claim 1, wherein: the lock (12) includes: the lock bolt comprises a lock bolt sliding block (1) provided with a blind hole sliding groove and an opening sliding rail and an I-shaped sliding block (4) with one side end surface connected with a reset spring (3), wherein an elliptical hole groove is formed on a wall plate of the I-shaped sliding groove of the sliding block (4), and a countersunk head rivet (2) movably assembles the sliding block (4) in the blind hole sliding groove of the lock bolt sliding block (1) through a connecting hole in the length direction of the lock bolt sliding block (1) and the elliptical hole groove to form a locker (12).

3. The LRM module tool-less gang lock extraction of claim 1, wherein: the bolt slider (1) is playing the rotation in-process of pulling out rocking arm handle (13), and shift fork (14) exert pressure to the rear end face of slider (4), through reset spring (3) compression assembly slider (4) in bolt slider (1) blind hole spout, slider (4) slide along bolt slider (1) bottom slide rail, carve the face through bolt slider (1) front end, provide the locking force for the locking of LRM module.

4. The LRM module tool-less gang lock extraction of claim 1, wherein: the locking force of the bolt sliding block (1) is derived from the compression force of a compression return spring (3), the return spring (3) is compressed and pushes the bolt sliding block (1) to slide linearly along the slot hole of the oval hole of the sliding block (4), the end of the elastic bolt sliding block (1) is gradually pushed into a locking slot (10) of the LRM module towards a wedged inclined plane, a positive pressure component of a compression state generated by the wedged inclined plane is transmitted to a rib (7), and extrusion friction force is generated after the wedged inclined plane clings to the rib (7) and the LRM module locking slot (10), so that the LRM module is locked, otherwise, the LRM module is pulled out of the detachable LRM module.

5. The LRM module tool-less gang lock extraction of claim 1, wherein: the LRM module is in compression locking state under compression reset spring's (3) effect, and reset spring (3) are when providing certain pretightning force for elasticity spring bolt slider (1, when elasticity spring bolt slider (1) is in locking operating condition, compression reset spring (3) can further compress, guarantee that LRM module is in the precompression state at plug in-process locker (12) inner spring.

6. The LRM module tool-less gang lock extraction of claim 1, wherein: in the state that the LRM module is inserted into the LRM module case pulling groove (9), the pulling block (6) is pulled, the pulling rocker handle (13) is driven to rotate anticlockwise through the force F operated by a person to drive the roller (5) to move upwards on the inner side wall of the LRM module case pulling groove (9), the spring bolt (16) is unlocked to push the LRM module out of the LRM module locking slot (10), and when the LRM module locking slot (10) is released from the locking slot, the pulling rocker handle (13) is pulled outwards until the elastic bolt sliding block (1) is completely separated from the LRM module locking slot (10), and the LRM module is pulled out.

7. The LRM module tool-less gang lock extraction of claim 1, wherein: the process of pulling out the LRM module by pulling out the rocker handle (13) is opposite to the process of inserting, the pulling block (6) is pulled out, the acting force F of pulling out the rocker handle (13) through manual operation is outward, the rotating shaft of the rocker handle (13) is manually pulled out to rotate, the roller (5) inserted into the LRM module case and pulled out of the groove 9 is clockwise rotated, the roller (5) is driven to pull out the notch of the groove 9 and be pulled out of the LRM module case, the outer side wall is moved upwards, the LRM module is pushed into the LRM module locking slot (10) and is transferred onto the LRM module case rib (7), the LRM module case rib (7) and the LRM module locking slot (10) are tightly attached, and then extrusion friction force is generated, and therefore locking of the LRM module is achieved.

8. The LRM module tool-less gang lock extraction of claim 1, wherein: in the LRM module inserting and pulling-out state, the LRM module slides along the inclined surface under the extrusion action of the inclined surface of the elastic bolt sliding block (1) until the LRM module is clamped into the root part in the LRM module locking slot (10) under the action of the return spring (3), the LRM module is installed in place, the locker (12) is not in contact with the LRM module locking slot (10), and therefore the return spring (3) in the locker (12) is in a free state.