CN111258395B

CN111258395B - Encrypted computer CPCI board card with safety protection function

Info

Publication number: CN111258395B
Application number: CN202010372419.5A
Authority: CN
Inventors: 李光明; 高召
Original assignee: Avic Power Science & Technology Engineering Co ltd
Current assignee: Avic Power Science & Technology Engineering Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-07-28
Anticipated expiration: 2040-05-06
Also published as: CN111258395A

Abstract

The invention discloses an encryption computer CPCI board card with a safety protection function, which comprises a board body, wherein a locking mechanism is fixed on the surface of the board body, a limiting mechanism is arranged on the side wall of the locking mechanism, the limiting mechanism and the locking mechanism are connected through a connecting mechanism, the connecting mechanism is arranged on the surface of the board body, and a heat dissipation mechanism is arranged at the bottom of the board body. The chip mounted inside the chip slot can be locked by the provided locking mechanism. This integrated circuit board is through the stop gear who sets up and locking mechanical system's cooperation, very easily with cylinder, connector and connecting rod locking, has stronger guard action, just need dismantle chip or integrated circuit board to take away the chip on the integrated circuit board, when the cylinder of placing the chip is locked the back, the connection that the cylinder can be stable on the plate body, the plate body can normal use.

Description

Encrypted computer CPCI board card with safety protection function

Technical Field

The invention belongs to the technical field of safety protection computer board cards, and particularly relates to an encryption computer CPCI board card with a safety protection function.

Background

With the continuous progress of the technology, the CPCI board card is adopted in many electronic instruments. The CPCI has the characteristics of hot plugging, high openness and high reliability, the CPCI is an aviation communication system, and a board card in the CPCI has the function of stabilizing the operation of the CPCI. Can meet the application requirements of various harsh environments such as military, industrial field, information industry and the like.

The prior aviation communication system needs to have higher safety performance when in use, some high-end clamping plates are likely to be stolen by people, the situation is frequent, and the serious consequence of aviation communication information leakage can be caused when the clamping plates are lost.

The 6U module with publication number CN201420155065.9 (a 6U CPCI module suitable for CPCI standard chassis and reinforced chassis) is designed based on the CPCI standard at present, and the CPCI module can only be applied to the standard CPCI chassis and is forced to convect and radiate heat by a fan; the method is not suitable for a plurality of users adopting the closed reinforced case, so that the requirement of reinforcing the CPCI module is generated, the method can be applied to a standard CPCI case and a CPCI reinforced case of the user, and the method has the reinforcing function but does not have the function of safety protection CPCI.

Disclosure of Invention

The invention aims to provide an encryption computer CPCI board card with a safety protection function, which can solve the problems that the existing aviation communication system needs to have higher safety performance when in use, some high-end board cards are likely to be stolen by people, the situation is frequent, and the serious consequences of aviation communication information leakage can be caused when the board cards are lost. This integrated circuit board is through the stop gear who sets up and locking mechanical system's cooperation, very easily with cylinder, connector and connecting rod locking, has stronger guard action, just need dismantle chip or integrated circuit board to take away the chip on the integrated circuit board, when the cylinder of placing the chip is locked the back, the connection that the cylinder can be stable on the plate body, the plate body can normal use.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides an encrypt computer CPCI integrated circuit board with safety protection function, the package rubbing board body, the detachable is connected with locking mechanical system on the surface of plate body, locking mechanical system's lateral wall is provided with stop gear, stop gear and locking mechanical system pass through coupling mechanism and connect, coupling mechanism installs the surface of plate body, the bottom of plate body is provided with heat dissipation mechanism. The chip arranged in the chip groove can be locked by the aid of the arranged locking mechanism, so that the chip cannot be separated from the chip groove, safety protection is achieved, the locking mechanism and the limiting mechanism can be connected together by the arranged connecting mechanism, and the limiting rod and the connecting mechanism are integrally formed.

Preferably, the locking mechanism comprises a cylinder, a chip groove is formed in the cylinder, a chip is mounted in the chip groove, the bottom of the cylinder is detachably mounted on the surface of the plate body, a plurality of L-shaped grooves are formed in the cylinder, a lifting groove communicated with the L-shaped groove is formed in the bottom of the L-shaped groove, the diameter of the lifting groove is smaller than that of the L-shaped groove, a lifting rod is mounted in the lifting groove, a second spring is sleeved on the surface of the lifting rod, an extrusion ball is fixed at the top of the lifting rod, a limiting ball matched with the extrusion ball is arranged above the extrusion ball, an integrally-formed cross rod is fixed on the side wall of the limiting ball, the end of the cross rod is fixed with the end of a third spring in the connecting mechanism, a clamping rod is fixed at the end of the third spring, a rod groove matched with the clamping rod is formed in the cylinder, an inner groove communicated with the rod groove is formed in the cylinder, the inner groove is matched with the cross rod, a movable extrusion pin is transversely arranged in the L-shaped groove, the extrusion pin and the extrusion ball and the locking mechanism can be mounted in the cylinder to prevent the chip from being separated from the locking mechanism after the chip is mounted in the cylinder, so that the cylinder, the chip can be safely taken out.

Preferably, the locking mechanism further comprises a locking member which is arranged inside the column body and is locked with the connecting body on the connecting mechanism; the retaining member comprises a U-shaped rod, a first spring is sleeved on the surface of the U-shaped rod, and a circular blocking piece for extruding the first spring is fixed on the surface of the U-shaped rod. The cylinder body and the connecting body can be locked together by the locking piece when an error occurs in the unlocking process through the arranged locking piece, the connection between the locking mechanism and the limiting mechanism can be opened only by a correct combination mode, each locking mechanism and each limiting mechanism can select to install the extrusion pin or select to install the locking piece when being installed, the locking mechanism provided with the extrusion pin locks the connecting mechanism when in use, the locking mechanism provided with the locking piece is installed without the extrusion pin, the locking piece is not locked when the limiting rod on the limiting mechanism does not touch the locking mechanism, the rotating block can rotate around the fixed pin after the rotating rod is abutted to the surface of the rotating block, the third spring can be pulled to be compressed from deformation during the rotating process of the rotating block, the elastic force is generated, and after the end part of the third spring moves under the locking groove, the third spring can generate the elastic force towards the other side, thereby open rotatory piece bullet, rotatory piece bullet in-process of opening, the horizontal pole and the spacing ball of third spring tip remove towards the direction that blocks the retaining ring, and at this moment, the kelly removes in the inside in pole groove, and the inside of guide way is entered into to the kelly until the kelly to make the kelly can be injectd in the inside of guide way, and at this moment, the horizontal pole passes the inside of through-hole, and spacing ball is located the inside that blocks the groove.

Preferably, the locking mechanism further comprises a clamping groove arranged on the inner side wall of the column body, and the clamping groove is of an arc-shaped concave structure towards the inner side of the column body. Through the cooperation of the clamping block and the clamping groove, after all the limiting mechanisms and the locking mechanisms are separated, the clamping groove and the clamping block can be separated from each other only by pulling the cylinder.

Preferably, coupling mechanism includes the connector, the inside of connector is provided with the piece groove, the internally mounted in piece groove has rotatory piece, the internally mounted in piece groove has the third spring, the end connection of third spring has integrated into one piece's connector, the end connection of connector has the fixed column, the fixed column with be swing joint between the connector, the opening groove has been seted up to the tip of rotatory piece, the fixed column is fixed the inside in opening groove, the inside in piece groove is provided with the fixed pin, the fixed pin runs through the inside of rotatory piece, rotatory piece with be swing joint between the fixed pin.

Preferably, the connecting mechanism further comprises a locking groove arranged in the connecting body, a locking rod is arranged in the locking groove and is abutted to the extrusion pin, and the locking groove is communicated with the L type groove.

Preferably, the connecting mechanism further comprises a clamping block arranged on the side wall of the connecting body, the clamping block is of a circular arc structure protruding towards the direction of the outer side wall of the connecting body, and the clamping block is clamped with the clamping groove.

Preferably, the inside of connector is provided with and is located the ring that blocks of block groove tip, it includes the circle body to block the circle, the inside of circle body is provided with the through-hole, the inside of circle body is provided with the groove that blocks of the round platform type structure of indent, the inside wall of circle body seted up with the guide way that blocks the groove intercommunication, guide way and kelly phase-match, the diameter size of through-hole is greater than the diameter size of horizontal pole.

Preferably, the limiting mechanism comprises a limiting rod and a connecting rod, the bottom of the connecting rod is fixed on the surface of the plate body, the limiting rod is sleeved inside the connecting rod, a stabilizing block is arranged at the top of the connecting rod, a plurality of rotating grooves and moving grooves are arranged inside the connecting rod, the rotating grooves and the moving grooves are arranged at intervals, the rotating grooves are communicated with the block grooves, an integrally formed rotating rod is fixed on the side wall of the limiting rod, and the rotating rod is abutted against the rotating block; the inside of connecting rod be provided with gag lever post assorted spacing groove, the top of gag lever post is fixed with integrated into one piece's knob.

Preferably, the heat dissipation mechanism comprises a heat dissipation cover fixed below the column body, a fan is connected inside the heat dissipation cover, and the fan is connected with a power supply through a wire.

A CPCI board card of an encryption computer with a safety protection function is provided, and a use method of the board card comprises the following steps:

the method comprises the following steps: during decoding, the knob is pulled by hand to rotate, the knob rotates to drive the limiting mechanism to unlock the locking mechanism, the limiting mechanism is abutted to the locking mechanism with the extrusion pin in the unlocking process, the locking mechanism is separated from the limiting mechanism, and after the limiting mechanism is abutted to the inner groove without the extrusion pin, the locking mechanism and the connecting mechanism are locked by the locking piece;

secondly, when the two locking mechanisms are opened simultaneously, the locking mechanisms can be taken out, a plurality of extrusion pins are arranged in each locking mechanism, each extrusion pin is matched with one extrusion ball, the extrusion balls can impact the end parts of the extrusion pins so that the extrusion pins move in the L-shaped groove, the other end parts of the extrusion pins can extrude the locking rod so that the locking rod is separated from the L-shaped groove and completely enters the locking groove, and the extrusion pins are just level to the outer wall of the cylinder, so that the separation of the cylinder and the connecting body is completed;

and thirdly, when the limiting mechanism is abutted to the inner groove which is not provided with the extrusion pin, the rotary rod on the limiting mechanism extrudes the locking mechanism, so that the locking mechanism drives the third spring to pull the limiting ball to move, the extrusion ball below the limiting ball is separated from the limiting ball, the top of the extrusion ball impacts the locking piece, the other end of the locking piece enters the cylinder and is locked in the arc-shaped groove in the cylinder, the arc-shaped groove is positioned in the circular hole above the locking groove, and the arc-shaped groove is communicated with the L type groove.

The invention has the beneficial effects that:

the chip arranged in the chip groove can be locked by the aid of the arranged locking mechanism, so that the chip cannot be separated from the chip groove, safety protection is achieved, the locking mechanism and the limiting mechanism can be connected together by the arranged connecting mechanism, and the limiting rod and the connecting mechanism are integrally formed. Thereby locking mechanical system locking can be played cooperation stop gear through the locking mechanical system that sets up, and locking mechanical system locking back, the cylinder will not break away from locking mechanical system, installs the chip in the cylinder inside just can not taken out to play safety protection's function.

The cylinder body and the connecting body can be locked together by the locking piece when an error occurs in the unlocking process through the arranged locking piece, the connection between the locking mechanism and the limiting mechanism can be opened only by a correct combination mode, each locking mechanism and each limiting mechanism can select to install the extrusion pin or select to install the locking piece when being installed, the locking mechanism provided with the extrusion pin locks the connecting mechanism when in use, the locking mechanism provided with the locking piece is installed without the extrusion pin, the locking piece is not locked when the limiting rod on the limiting mechanism does not touch the locking mechanism, the rotating block can rotate around the fixed pin after the rotating rod is abutted to the surface of the rotating block, the third spring can be pulled to be compressed from deformation during the rotating process of the rotating block, the elastic force is generated, and after the end part of the third spring moves under the locking groove, the third spring can generate the elastic force towards the other side, thereby open rotatory piece bullet, rotatory piece bullet in-process of opening, the horizontal pole and the spacing ball of third spring tip remove towards the direction that blocks the retaining ring, and at this moment, the kelly removes in the inside in pole groove, and the inside of guide way is entered into to the kelly until the kelly to make the kelly can be injectd in the inside of guide way, and at this moment, the horizontal pole passes the inside of through-hole, and spacing ball is located the inside that blocks the groove.

This integrated circuit board is through the stop gear who sets up and locking mechanical system's cooperation, very easily with cylinder, connector and connecting rod locking, has stronger guard action, just need dismantle chip or integrated circuit board to take away the chip on the integrated circuit board, when the cylinder of placing the chip is locked the back, the connection that the cylinder can be stable on the plate body, the plate body can normal use.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 3 according to the present invention;

FIG. 5 is a schematic view of the retaining member of the present invention;

FIG. 6 is a schematic view showing a connection structure of the rod groove and the inner groove of the present invention;

FIG. 7 is a schematic view of a stop ring according to the present invention;

FIG. 8 is a schematic view of a stop lever engagement structure of the present invention;

in the figure, the device comprises a plate body 1, a plate body 2, a locking mechanism 21, a chip groove 22, a column body 23, a locking member 231, a U-shaped rod 232, a first spring 233, a circular blocking sheet 24, a squeezing pin 25, L type groove 26, a limiting ball 27, a cross bar 28, a clamping rod 29, a rod groove 210, an inner groove 211, a clamping groove 212, a squeezing ball 213, a second spring 214, a lifting rod 215, a lifting groove 3, a limiting mechanism 31, a knob 32, a stabilizing block 33, a connecting rod 34, a limiting rod 341, a limiting groove 35, a rotating groove 36, a moving groove 37, a rotating rod 4, a connecting mechanism 41, a connecting body 42, a rotating block 43, a fixing pin 44, a block groove 45, a locking groove 46, a locking rod 47, a fixing column 48, a connecting head 49, a third spring 410, a blocking ring 410, a through hole 4102, a ring body 411, a rotating block 4103, a guide groove, a clamping block 5, a heat dissipation cover 52, a fan 51 and a heat dissipation cover 52.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, an encryption computer CPCI board with a safety protection function includes a board body 1, a locking mechanism 2 is detachably connected to the surface of the board body 1, a limiting mechanism 3 is arranged on a side wall of the locking mechanism 2, the limiting mechanism 3 and the locking mechanism 2 are connected through a connecting mechanism 4, the connecting mechanism 4 is installed on the surface of the board body 1, and a heat dissipation mechanism 5 is arranged at the bottom of the board body 1. The chip arranged in the chip groove 21 can be locked by the aid of the arranged locking mechanism 2, so that the chip cannot be separated from the chip groove 21, safety protection is achieved, the locking mechanism 2 and the limiting mechanism 3 can be connected together by the arranged connecting mechanism 4, and the limiting rod 34 and the connecting mechanism 4 are integrally formed.

Specifically, the locking mechanism 2 comprises a cylinder 22, a chip groove 21 is formed in the cylinder 22, a chip is mounted in the chip groove 21, the bottom of the cylinder 22 is detachably mounted on the surface of the plate body 1, a plurality of L type grooves 25 are formed in the cylinder 22, a lifting groove 215 communicated with the bottom of each L type groove 25 is formed in the bottom of each L type groove 25, the diameter size of each lifting groove 215 is smaller than that of each L type groove 25, a lifting rod 214 is mounted in each lifting groove 215, a second spring 213 is sleeved on the surface of each lifting rod 214, an extrusion ball 212 is fixed to the top of each lifting rod 214, a limiting ball 26 matched with the extrusion ball 212 is arranged above each extrusion ball 212, a cross rod 27 integrally formed is fixed to the side wall of each limiting ball 26, the end of each cross rod 27 is fixed to the end of a third spring 49 in the connecting mechanism 4, a clamping rod 28 is fixed to the end of each third spring 49, a rod groove 29 matched with the cylinder 22 is arranged in the cylinder 22, a safety pin 210 is capable of being separated from the extrusion ball groove 24 and the safety pin 210 is mounted in the cylinder 22 so that the safety pin 24 and the safety pin 210 can be separated from the safety pin 24.

Specifically, the locking mechanism 2 further comprises a locking member 23 which is arranged inside the column 22 and is locked with the connecting body 41 on the connecting mechanism 4; the locking member 23 comprises a U-shaped rod 231, a first spring 232 is sleeved on the surface of the U-shaped rod 231, and a circular blocking piece 233 which extrudes the first spring 232 is fixed on the surface of the U-shaped rod 231. The locking piece 23 is arranged to lock the cylinder 22 and the connecting body 41 together when an error occurs in the unlocking process, the connection between the locking mechanism 2 and the limiting mechanism 3 can be opened only by a correct combination mode, each of the locking mechanism 2 and the limiting mechanism 3 can be selectively provided with the pressing pin 24 or the locking piece 23 when being installed, the locking mechanism 2 provided with the pressing pin 24 locks the connecting mechanism 4 when in use, the locking mechanism 2 provided with the locking piece 23 is installed without the pressing pin 24, the locking piece 23 is unlocked when the limiting rod 34 on the limiting mechanism 3 does not touch the locking mechanism 2, after the rotating rod 37 abuts against the surface of the rotating block 42, the rotating block 42 rotates around the fixing pin 43, and the third spring 49 is pulled to be compressed from deformation during the rotating process of the rotating block 42, when the end of the third spring 49 moves under the locking groove 45, the third spring 49 will generate a spring force towards the other side, so as to spring the rotating block 42 open, and during the process of springing the rotating block 42 open, the cross bar 27 and the limit ball 26 at the end of the third spring 49 move towards the direction of the stop ring 410, at this time, the jamming rod 28 moves inside the bar groove 29 until the jamming rod 28 enters the inside of the guide groove 4103, so that the jamming rod 28 will be limited inside the guide groove 4103, at this time, the cross bar 27 passes through the inside of the through hole 4101, and the limit ball 26 is located inside the stop groove.

Specifically, the locking mechanism 2 further includes a locking groove 211 disposed on the inner side wall of the column 22, and the locking groove 211 is in an arc-shaped concave structure facing the inner side of the column 22. Through the cooperation of the clamping block 411 and the clamping groove 211, after all the limiting mechanisms 3 and the locking mechanisms 2 are separated, the clamping groove 211 and the clamping block 411 can be separated from each other only by pulling the column 22.

Specifically, coupling mechanism 4 includes connector 41, connector 41's inside is provided with piece groove 44, the internally mounted of piece groove 44 has rotatory piece 42, the internally mounted of piece groove 44 has third spring 49, the end connection of third spring 49 has integrated into one piece's connector 48, the end connection of connector 48 has fixed column 47, fixed column 47 with be swing joint between the connector 48, the opening groove has been seted up to the tip of rotatory piece 42, fixed column 47 is fixed the inside in opening groove, the inside in piece groove 44 is provided with fixed pin 43, fixed pin 43 runs through the inside of rotatory piece 42, rotatory piece 42 with be swing joint between the fixed pin 43.

Specifically, the connecting mechanism 4 further comprises a locking groove 45 arranged inside the connecting body 41, a locking rod 46 is arranged inside the locking groove 45, the locking rod 46 is abutted to the extrusion pin 24, and the locking groove 45 is communicated with the L-shaped groove 25.

Specifically, the connecting mechanism 4 further includes a fixture block 411 disposed on the sidewall of the connecting body 41, the fixture block 411 is a circular arc-shaped structure protruding toward the outer sidewall of the connecting body 41, and the fixture block 411 is clamped with the clamping groove 211.

Specifically, a blocking ring 410 located at an end of the block groove 44 is disposed inside the connecting body 41, the blocking ring 410 includes a ring body 4102, a through hole 4101 is disposed inside the ring body 4102, a blocking groove of an inward concave truncated cone structure is disposed inside the ring body 4102, a guide groove 4103 communicated with the blocking groove is disposed on an inner side wall of the ring body 4102, the guide groove 4103 is matched with the clamping rod 28, and a diameter size of the through hole 4101 is larger than a diameter size of the cross rod 27.

Specifically, the limiting mechanism 3 includes a limiting rod 34 and a connecting rod 33, the bottom of the connecting rod 33 is fixed on the surface of the plate body 1, the limiting rod 34 is sleeved inside the connecting rod 33, a stabilizing block 32 is arranged at the top of the connecting rod 33, a plurality of rotating grooves 35 and moving grooves 36 are arranged inside the connecting rod 33, the rotating grooves 35 and the moving grooves 36 are arranged at intervals, the rotating grooves 35 are communicated with the block grooves 44, an integrally formed rotating rod 37 is fixed on the side wall of the limiting rod 34, and the rotating rod 37 is abutted to the rotating block 42; a limiting groove 341 matched with the limiting rod 34 is arranged in the connecting rod 33, and the top of the limiting rod 34 is fixed with an integrally formed knob 31.

Specifically, the heat dissipation mechanism 5 includes a heat dissipation cover 51 fixed below the column 22, a fan 52 is connected inside the heat dissipation cover 51, and the fan 52 is connected with a power supply through a wire.

When the invention is used, the knob 31 is pulled by hand to rotate the knob 31, the knob 31 rotates to drive the limiting mechanism 3 to unlock the locking mechanism 2, the limiting mechanism 3 is abutted to the locking mechanism 2 with the extrusion pin 24 in the unlocking process to separate the locking mechanism 2 from the limiting mechanism 3, and after the limiting mechanism 3 is abutted to the inner groove 210 without the extrusion pin 24, the locking mechanism 2 and the connecting mechanism 4 are locked by the locking piece 23;

when two locking mechanisms 2 are opened simultaneously, the locking mechanisms 2 can be taken out, a plurality of pressing pins 24 are arranged in each locking mechanism 2, each pressing pin 24 is matched with the pressing ball 212, the pressing balls 212 impact the ends of the pressing pins 24, so that the pressing pins 24 move in the L type grooves 25, the other ends of the pressing pins 24 press the locking rods 46, so that the locking rods 46 are separated from the insides of the L type grooves 25 and completely enter the insides of the locking grooves 45, and the pressing pins 24 are just flush with the outer walls of the cylinder 22, so that the separation of the cylinder 22 and the connecting body 41 is completed, when the limiting mechanism 3 is abutted to the inner groove 210 without the pressing pins 24, the rotating rods 37 on the limiting mechanism 3 press the locking mechanisms 2, so that the locking mechanisms 2 drive the third springs 49 to pull the limiting balls 26 to move, so that the pressing balls 212 below the limiting balls 26 are separated from the limiting balls 26, so that the tops of the pressing balls 212 impact the locking elements 23, so that the other ends of the locking elements 23 can enter the insides of the cylinder 22 and are locked in the arc-shaped grooves L above the arc-shaped grooves in the cylinder 22.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The encrypted computer CPCI board card with the safety protection function is characterized by comprising a board body (1), wherein a locking mechanism (2) is detachably connected to the surface of the board body (1), a limiting mechanism (3) is arranged on the side wall of the locking mechanism (2), the limiting mechanism (3) and the locking mechanism (2) are connected through a connecting mechanism (4), the connecting mechanism (4) is installed on the surface of the board body (1), and a heat dissipation mechanism (5) is arranged at the bottom of the board body (1);

the locking mechanism (2) comprises a cylinder (22), a chip groove (21) is formed in the cylinder (22), a chip is mounted in the chip groove (21), the bottom of the cylinder (22) is detachably mounted on the surface of the plate body (1), a plurality of L type grooves (25) are formed in the cylinder (22), a lifting groove (215) communicated with the bottom of the L type groove (25) is formed in the bottom of the lifting groove (215), the diameter size of the lifting groove (215) is smaller than that of the L type groove (25), a lifting rod (214) is mounted in the lifting groove (215), a second spring (213) is sleeved on the surface of the lifting rod (214), an extrusion ball (212) is fixed to the top of the lifting rod (214), a limiting ball (26) matched with the extrusion ball (212) is arranged above the extrusion ball (212), a cross rod (27) integrally formed in the side wall of the limiting ball (26) is fixed to the side wall of the cross rod (27), the end of the cross rod (27) is communicated with a third spring (49) in the connecting mechanism (4), an end of the extrusion ball (27) is fixed to the inner groove (27), an inner groove (24) and an inner groove (27) and an inner groove (35) and a movable type groove (35) and a clamping pin (35) are arranged in the extrusion pin (24) and a movable type groove (35) and a pin (35).

2. A CPCI card for a security computer, as claimed in claim 1, characterised in that said locking mechanism (2) further comprises a locking member (23) arranged inside said cylinder (22) and locking with said upper connecting body (41) of said connecting mechanism (4);

retaining member (23) are including U-shaped pole (231), the cover is equipped with first spring (232) on the surface of U-shaped pole (231), be fixed with circular separation blade (233) of first spring (232) of extrusion on the surface of U-shaped pole (231).

3. The CPCI board card with the security protection function of claim 1 or 2, wherein the locking mechanism (2) further comprises a clamping groove (211) arranged on the inner side wall of the cylinder (22), and the clamping groove (211) is of an arc-shaped concave structure towards the inner side of the cylinder (22).

4. The encryption computer CPCI board card with the safety protection function according to claim 3, wherein the connecting mechanism (4) comprises a connecting body (41), a block groove (44) is arranged inside the connecting body (41), a rotating block (42) is arranged inside the block groove (44), a third spring (49) is arranged inside the block groove (44), an integrally formed connecting head (48) is connected to the end of the third spring (49), a fixing column (47) is connected to the end of the connecting head (48), the fixing column (47) is movably connected with the connecting head (48), a notch is formed in the end of the rotating block (42), the fixing column (47) is fixed inside the notch, a fixing pin (43) is arranged inside the block groove (44), and the fixing pin (43) penetrates through the inside of the rotating block (42), the rotating block (42) is movably connected with the fixing pin (43).

5. A CPCI board card of an encryption computer with a safety protection function, according to claim 4, characterized in that the connecting mechanism (4) further comprises a locking groove (45) arranged inside the connecting body (41), a locking rod (46) is arranged inside the locking groove (45), the locking rod (46) is abutted to the extrusion pin (24), and the locking groove (45) is communicated with the L-shaped groove (25).

6. A CPCI card with a safety protection function for an encryption computer, according to claim 5, wherein the connecting mechanism (4) further comprises a clamping block (411) arranged on the side wall of the connecting body (41), the clamping block (411) is of a circular arc structure protruding towards the outer side wall of the connecting body (41), and the clamping block (411) is clamped with the clamping groove (211).

7. The encryption computer CPCI board card with the safety protection function according to claim 6, wherein a stop ring (410) located at the end of the block slot (44) is arranged inside the connecting body (41), the stop ring (410) comprises a ring body (4102), a through hole (4101) is arranged inside the ring body (4102), a stop slot with an inwards concave circular truncated cone-shaped structure is arranged inside the ring body (4102), a guide slot (4103) communicated with the stop slot is formed in the inner side wall of the ring body (4102), the guide slot (4103) is matched with the clamping rod (28), and the diameter size of the through hole (4101) is larger than that of the cross rod (27).

8. The encryption computer CPCI board card with the safety protection function according to claim 1, wherein the limiting mechanism (3) comprises a limiting rod (34) and a connecting rod (33), the bottom of the connecting rod (33) is fixed on the surface of the board body (1), the limiting rod (34) is sleeved inside the connecting rod (33), a stabilizing block (32) is arranged on the top of the connecting rod (33), a plurality of rotating grooves (35) and moving grooves (36) are arranged inside the connecting rod (33), the rotating grooves (35) and the moving grooves (36) are arranged at intervals, the rotating grooves (35) are communicated with the block grooves (44), an integrally formed rotating rod (37) is fixed on the side wall of the limiting rod (34), and the rotating rod (37) is abutted against the rotating block (42);

the inside of connecting rod (33) is provided with gag lever post (34) assorted spacing groove (341), the top of gag lever post (34) is fixed with integrated into one piece's knob (31).

9. The encryption computer CPCI board card with the safety protection function according to claim 1, wherein the heat dissipation mechanism (5) comprises a heat dissipation cover (51) fixed below the cylinder (22), a fan (52) is connected inside the heat dissipation cover (51), and the fan (52) is connected with a power supply through a wire.

10. The use method of the CPCI board card of the encryption computer with the safety protection function, as claimed in claim 1, is characterized by comprising the following steps:

the method comprises the following steps: during decoding, the knob (31) is pulled by hand to rotate the knob (31), the knob (31) rotates to drive the limiting mechanism (3) to unlock the locking mechanism (2), the limiting mechanism (3) is abutted to the locking mechanism (2) with the extrusion pin (24) in the unlocking process, the locking mechanism (2) is separated from the limiting mechanism (3), and after the limiting mechanism (3) is abutted to the inner groove (210) without the extrusion pin (24), the locking mechanism (2) and the connecting mechanism (4) are locked by the locking piece (23);

secondly, when the two locking mechanisms (2) are opened simultaneously, the locking mechanisms (2) can be taken out, a plurality of squeeze pins (24) are arranged in each locking mechanism (2), each squeeze pin (24) is matched with each squeeze ball (212), each squeeze ball (212) impacts the end of each squeeze pin (24), so that each squeeze pin (24) moves in an L-shaped groove (25), the other end of each squeeze pin (24) squeezes the locking rod (46), the locking rod (46) is separated from the L-shaped groove (25) and completely enters the locking groove (45), and the squeeze pins (24) are just level with the outer wall of the cylinder (22), so that the separation of the cylinder (22) and the connecting body (41) is completed;

thirdly, when the limiting mechanism (3) is abutted to the inner groove (210) which is not provided with the extrusion pin (24), the rotating rod (37) on the limiting mechanism (3) can extrude the locking mechanism (2), so that the locking mechanism (2) drives the third spring (49) to pull the limiting ball (26) to move, the extrusion ball (212) below the limiting ball (26) is separated from the limiting ball (26), the top of the extrusion ball (212) impacts the locking piece (23), the other end of the locking piece (23) can enter the cylinder (22) and is locked in the arc-shaped groove in the cylinder (22), the arc-shaped groove is positioned in the circular hole above the locking groove (45), and the arc-shaped groove is communicated with the L-shaped groove (25).