A secure connection device of an SM4 encryption and decryption algorithm network security device

Abstract

The present application relates to the technical field of cooling of data processing equipment, and particularly discloses a secure connection device of an SM4 encryption and decryption algorithm network security device, which comprises a password card main body, a main frame, a fixed heat dissipation part, an extended heat dissipation part, a supporting and locking part, an expandable heat conduction part and a positioning guide part, the main frame comprises a frame body, the lower side of the frame body is fixedly connected with a resisting frame, the right side of the inside of the frame body is fixedly connected with a resisting strip, the inside of the frame body is fixedly connected with the password card main body, and the password card main body is located between the resisting strip and the resisting frame, in the present application, the expandable heat conduction part, the extended heat dissipation part, the fixed heat dissipation part and the main frame are arranged, so that the secure connection device can protect the golden finger from being damaged when not being installed and used, can be unfolded in the shell of the network security device when being installed and used, can increase the heat dissipation area, improve the air cooling efficiency and be low in cost, can ensure the close and stable connection between the golden finger and the interface end, and can guarantee the reliability of data transmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cooling technology for data processing equipment, in particular to a secure connection device for SM4 encryption and decryption algorithm network security equipment. BACKGROUND

[0002] A secure connection device is a device or module used to protect network communication security. This device not only physically connects network equipment, but also logically establishes a secure communication channel. Through identity authentication and access control functions, it ensures that only legitimate users or devices can access and use data, thereby achieving secure network connection. The secure connection device for SM4 encryption and decryption algorithm network security equipment refers to a component or module integrated in network security equipment, specifically designed to perform SM4 encryption and decryption operations. A password card is a typical example of such a device. It connects to servers or other devices through interfaces such as PCI-E or PCI, providing efficient encryption and decryption services to ensure data security during transmission and storage. The password card supports the SM4 algorithm, enabling data encryption and decryption processing, as well as identity authentication, digital signature, and data integrity verification functions, providing comprehensive security protection for network security equipment.

[0003] The secure connection device, i.e. the password card, generates heat during encryption and decryption operations, especially under high load and long-term operation. If the heat is not dissipated in time, it may cause overheating, affecting performance and lifespan, and even causing failure. To ensure stable operation and prolong service life, the password card is usually equipped with cooling measures, mainly including the following: 1) passive cooling through fixed cooling fins, but this cooling method has limited cooling performance; 2) water cooling through circulating coolant, but due to the small size of the password card, the compatible liquid pump and other water cooling mechanisms also need to be small, resulting in high cost of this cooling measure; 3) rare use of cold accumulators for cooling, but the password card is usually installed in servers or other long-running devices, and the internal temperature of these devices is high. In such a high-temperature environment, the cold accumulator cannot effectively absorb and store cold, so it cannot continuously cool the password card. Moreover, the cooling effect of the cold accumulator depends on the stored cold, and once the cold is depleted, the cooling effect will significantly decrease, failing to meet the cooling needs of the long-running password card. Therefore, cold accumulators are not suitable for cooling the password card. As described above, the existing secure connection device, i.e. the password card, has some shortcomings in cooling and cooling. Therefore, based on the above problems, a secure connection device for SM4 encryption and decryption algorithm network security equipment is proposed. SUMMARY

[0004] The application aims to provide a secure connection device of an SM4 encryption and decryption algorithm network security device, so as to solve the problem of limited heat dissipation performance or high cost of various heat dissipation cooling modes of the existing secure connection device, i.e., a password card.

[0005] To achieve the above object, the application provides the following technical scheme.

[0006] The secure connection device of the SM4 encryption and decryption algorithm network security device comprises a password card main body, a main frame, a fixed heat dissipation part, an extended heat dissipation part, a supporting and locking part, an expandable heat conduction part and a positioning guide part.

[0007] Preferably, the expandable heat conduction part comprises a heat conduction sleeve fixedly connected with the heat conduction rotating arm, a receiving groove higher than the password card main body is formed in the left side of the heat conduction sleeve, a storage groove is formed in the right side of the heat conduction sleeve, a pair of storage covers symmetrically arranged in an up-down direction is rotatably connected to the right side of the heat conduction sleeve through a connecting soft belt, a heat conduction silica gel sheet II fixedly connected in a bent manner is arranged between the storage cover and the storage groove, a protruding rod is fixedly connected to the front and rear sides of the storage cover, a rubber band is sleeved on the outer sides of the protruding rods arranged in an up-down direction, and the fixed heat dissipation part is arranged on the left side of the expandable heat conduction part.

[0008] Preferably, the fixed heat dissipation part comprises a heat conduction silica gel sheet I mounted and attached to the upper side of the password card main body, a heat conduction base fixedly connected to the upper side of the heat conduction silica gel sheet I, a plurality of heat dissipation fins arranged at equal intervals and fixedly connected to the upper side of the heat conduction base, a limiting guide bar fixedly connected to the upper side of each heat dissipation fin, the extended heat dissipation part is arranged at the fixed heat dissipation part, the extended heat dissipation part comprises a base bar arranged on the left side of a group of heat dissipation fins, a plurality of heat dissipation extension bars slidably connected with the heat dissipation fins are fixedly connected to the right side of the base bar, each heat dissipation extension bar is composed of two extension bars and arranged on both sides of the heat dissipation fin, an opening is formed in the inner side of the base bar in an up-opening manner, a rotating block horizontally aligned with the receiving groove is rotatably connected to the inner side of the opening, an elastic pull rope in an elastic expansion state is fixedly connected to the right end of the rotating block, the right end of the elastic pull rope is fixedly connected with the inner wall of the receiving groove, and the supporting and locking part is arranged on the left side of the frame.

[0009] Preferably, the supporting locking part comprises a supporting flap fixed on the left side of the frame body, the upper end surface of the supporting flap is arranged in the same plane with the lower end surface of the heat dissipation extension strip group, the front and rear sides of the supporting flap are fixedly connected with supporting strips, the supporting strips are arranged on the lower left side of the heat conduction rotating arm, the upper end surface of the supporting strip is arranged in the same plane with the lower end surface of the heat conduction rotating arm, and the supporting flap, the supporting strip and the heat dissipation fin are plate structures of the same metal.

[0010] Preferably, the width size of the limiting guide strip is greater than the thickness size of the heat dissipation fin, the heat dissipation extension strip group is arranged between the limiting guide strip and the heat conduction base, the length size of the heat dissipation extension strip group is the same as the length size of the heat dissipation fin, the resisting strips are arranged on the right side of the fixed heat dissipation part, the left end surface of the resisting strip is attached to the right end of the heat conduction base, the groove depth size of the storage cover is the same as the groove depth size of the storage groove, and the thickness size of the heat conduction silica gel sheet two is greater than the groove depth size of the storage groove.

[0011] Preferably, the hole position of the guide block is fixedly connected with a damping sleeve on the inner side, the inner side of the damping sleeve is provided with a damping rod, the two ends of the damping rod are fixedly connected with the left and right inner walls of the guide rail, the opposite surfaces of a group of heat conduction rotating arms are provided with positioning rail grooves, the front and rear sides of the frame body are provided with mounting openings on the left side of the heat conduction rotating arm, the left side of the mounting opening is provided with a through hole, the supporting flap is provided with a guide hole aligned with the through hole, the inner side of the guide hole is slidably connected with a resisting rod on the inner side of the through hole, the left side of the supporting flap is rotatably connected with an adjusting bolt, the outer side of the adjusting bolt is threadedly connected with a connecting strip fixedly connected with the left end of the resisting rod, the inner side of the mounting opening is provided with a positioning guide part, the positioning guide part comprises a housing fixed on the inner side of the mounting opening, the inner side of the housing is provided with a guide pin, the inner side of the guide pin is provided with a guide cavity, the inner side of the guide cavity is slidably connected with a limiting rod, the right end of the limiting rod is fixedly connected with the inner wall of the housing, the outer side of the limiting rod is sleeved with a second spring on the plane side of the guide pin, the left side of the housing is provided with an insertion hole communicated with the through hole, and the insertion hole is on the plane end side of the guide pin, and the right end of the resisting rod is on the inner side of the insertion hole.

[0012] Preferably, a gap is arranged between the connecting strip and the supporting flap, the diameter size of the guide pin is the same as the rail width size of the positioning rail groove, the guide pin and the positioning rail groove are arranged in left-right transverse alignment, one end of the guide pin close to the heat conduction rotating arm is provided with a round head, the round head end of the guide pin protrudes out of the housing, a gap is arranged between the guide pin and the inner wall of the housing, and the side away from the limiting rod of the guide cavity is provided with an exhaust passage.

[0013] Preferably, the left side of the heat conducting sleeve is provided with a protection slot for accommodating the gold finger of the password card body, and the upper and lower sides of the protection slot are fixedly connected with elastic protection pads, and the elastic protection pads are attached to the upper and lower sides of the gold finger of the password card body.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. In the present application, the main frame can support the password card body, the gold finger of the password card body can be protected before the action of the expandable heat conducting part, and the action of the main frame can drive the expandable heat conducting part to rotate and displace when installation and connection are needed, thereby driving the extension heat dissipation part to extend based on the fixed heat dissipation part, so that the gold finger is protected from damage when the safety connection device is not installed and used, and the gold finger can be expanded in the case of the network security equipment when the safety connection device is installed and used, which not only increases the heat dissipation area, improves the air cooling efficiency and is low in cost, but also ensures the close and stable connection between the gold finger and the interface end and guarantees the reliability of data transmission, solving the problems of limited heat dissipation performance or high cost of various heat dissipation and cooling modes of the existing safety connection device, i.e. the password card.

[0016] 2. In the present application, the positioning guide part, the positioning rail groove, the damping rod and the damping sleeve are arranged, so that the heat conducting rotating arm and the guide block are pressed downward by the expandable heat conducting part after the case cover is reset and installed, forcing the first spring to contract. Due to the arrangement of the positioning guide part and the positioning rail groove, the heat conducting rotating arm cannot be bent with the frame body. At this time, the elastic force of the first spring will exert a positive downward pressure on the frame body, and then exert a positive downward pressure on the password card body in the frame body. At the same time, the damping of the damping rod and the damping sleeve on the guide block makes the main frame part maintain its state after being expanded and pressed by the case cover, and will not change due to slight vibration, so as to ensure that the gold finger of the password card body and the interface end maintain close and stable contact, guarantee the reliability of data transmission and the normal operation of the password card body, and avoid that the password card body is disconnected from the contact connection with the interface due to vibration or other reasons. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the overall structure of the present application;

[0018] Figure 2 It is another perspective view of the structure of the present application; Figure 1

[0019] Figure 3 It is a bottom view of the structure of the present application; Figure 2

[0020] Figure 4 It is a schematic view of the structure at the main frame part of the present application; ​​

[0021] Figure 5 Split structure schematic diagram of the present application Figure 4

[0022] Figure 6 Split structure schematic diagram of the present application Figure 5

[0023] Figure 7 Split structure schematic diagram of the present application Figure 5

[0024] Figure 8 Split structure schematic diagram of the present application

[0025] Figure 9 Split structure schematic diagram of the present application

[0026] Figure 10 Split structure schematic diagram of the present application

[0027] Figure 11 Split structure schematic diagram of the present application

[0028] Figure 12 Split structure schematic diagram of the present application

[0029] Figure 13 Split structure schematic diagram of the present application

[0030] Figure 14 Split structure schematic diagram of the present application

[0031] Figure 15 Split structure schematic diagram of the present application Figure 14

[0032] Split structure schematic diagram of the present application Figure 16 Figure 15 Split structure schematic diagram of the present application

[0033] Figure 17 Split structure schematic diagram of the present application Figure 1

[0034] Split structure schematic diagram of the present application Figure 18 Figure 17 Split structure schematic diagram of the present application

[0035] Split structure schematic diagram of the present application Figure 19 Figure 17 Split structure schematic diagram of the present application

[0036] Split structure schematic diagram of the present application Figure 20 Split structure schematic diagram of the present application Figure 19 Split structure schematic diagram of the present application

[0037] ​​​​In the figure: 1, password card main body; 2, main frame part; 201, frame body; 202, resistance strip; 203, resistance frame; 204, mounting port; 205, perforation; 206, guide rail; 207, damping rod; 208, damping sleeve; 209, guide block; 210, first spring; 211, heat-conducting rotating arm; 212, positioning rail slot; 3, fixed heat dissipation part; 31, heat-conducting silica gel sheet one; 32, heat-conducting base; 33, heat dissipation fin; 34, limiting guide bar; 4, extended heat dissipation part; 41, base bar; 42, heat dissipation extension bar group; 43, rotating port; 44, rotating block; 45, elastic pull rope; 5, supporting locking part; 51, supporting folded plate; 52, supporting bar; 53, guide hole; 54, resistance rod; 55, adjusting bolt; 56, linkage bar; 6, expandable heat-conducting part; 61, heat-conducting sleeve; 62, protection slot; 63, elastic protection pad; 64, storage groove; 65, storage groove; 66, storage cover; 67, heat-conducting silica gel sheet two; 68, convex rod; 69, rubber band; 7, positioning guide part; 71, shell; 72, guide pin; 73, guide cavity; 74, limiting rod; 75, second spring; 76, insertion hole. DETAILED DESCRIPTION

[0038] Please refer to Figures 1-20 The present application provides a technical solution:

[0039] The application discloses a security connection device of an SM4 encryption and decryption algorithm network security device, which comprises a password card main body 1, a main frame part 2, a fixed heat dissipation part 3, an extended heat dissipation part 4, a supporting and locking part 5, an expandable heat conduction part 6 and a positioning guide part 7. The main frame part 2 comprises a frame body 201, the lower side of the frame body 201 is fixedly connected with a resisting frame 203, the inner right side of the frame body 201 is fixedly connected with a resisting strip 202, the inner side of the frame body 201 is fixedly connected with the password card main body 1, the password card main body 1 is located between the resisting strip 202 and the resisting frame 203, the front and back sides of the frame body 201 are both provided with guide rails 206, the inner sides of the guide rails 206 are both slidably connected with guide blocks 209, the right end faces of the guide blocks 209 and the right inner walls of the guide rails 206 are both provided with first springs 210, the rotary rods of the guide blocks 209 are both rotatably connected with horizontally arranged heat conduction rotary arms 211, the right ends of a group of the heat conduction rotary arms 211 are provided with the expandable heat conduction part 6, the expandable heat conduction part 6 comprises a heat conduction sleeve 61 which is fixedly connected with the heat conduction rotary arms 211, the left side of the heat conduction sleeve 61 is provided with a receiving groove 64 which is higher than the password card main body 1, the right side of the heat conduction sleeve 61 is provided with a storage groove 65, the right side of the heat conduction sleeve 61 is rotatably connected with a pair of storage covers 66 which are symmetrically arranged in an up-down mode through a connecting soft belt, the storage covers 66 and the storage groove 65 are fixedly connected with heat conduction silica gel sheets two 67 which are arranged in a bending mode, the front and back sides of the storage covers 66 are both fixedly connected with convex rods 68, the outer sides of the up-down convex rods 68 are both sleeved with rubber bands 69, the upper side of the password card main body 1 is provided with the fixed heat dissipation part 3 which is located at the left side of the expandable heat conduction part 6, the storage groove 65 can be used for storing the heat conduction silica gel sheets two 67, the heat conduction silica gel sheets two 67 can be expanded when needed, and the heat dissipation efficiency can be improved after the expansion and the cooperation of the machine shell cover; the fixed heat dissipation part 3 comprises heat conduction silica gel sheets one 31 which are attached to the upper side of the password card main body 1, the upper side of the heat conduction silica gel sheets one 31 is fixedly connected with a heat conduction base 32, the upper side of the heat conduction base 32 is fixedly connected with a plurality of equidistantly arranged heat dissipation fins 33, the upper sides of the heat dissipation fins 33 are all fixedly connected with limiting guide strips 34, the fixed heat dissipation part 3 is provided with the extended heat dissipation part 4, the extended heat dissipation part 4 comprises a base strip 41 which is located at the left side of a group of the heat dissipation fins 33, the right side of the base strip 41 is fixedly connected with a plurality of heat dissipation extension strip groups 42 which are slidably connected with the heat dissipation fins 33, the heat dissipation extension strip groups 42 are composed of two extension strips and are arranged on the two sides of the heat dissipation fins 33, the inner side of the base strip 41 is provided with a rotating opening 43 which is arranged in an up-opening mode, the inner side of the rotating opening 43 is rotatably connected with a rotating block 44 which is horizontally aligned with the receiving groove 64 in a left-right mode, the right end of the rotating block 44 is fixedly connected with an elastic pull rope 45 which is in an elastic expansion state, the right end of the elastic pull rope 45 is fixedly connected with the inner wall of the receiving groove 64, the left side of the frame body 201 is provided with the supporting and locking part 5, the fixed heat dissipation part 3 and the extended heat dissipation part 4 can be expanded through the arrangement, the contact area with air can be increased after the expansion, thereby improving the air cooling heat dissipation effect, and the displacement of the expandable heat conduction part 6 can drive the displacement of the extended heat dissipation part 4.The supporting and locking part 5 includes a supporting flap 51 fixed on the left side of the frame 201, the upper end surface of the supporting flap 51 is arranged in the same plane with the lower end surface of the heat dissipation extension strip group 42, through this arrangement, the supporting flap 51 can support the heat dissipation extension strip group 42 after displacement, the front and back sides of the supporting flap 51 are both fixedly connected with supporting strips 52, the supporting strips 52 are both arranged on the lower left side of the heat conduction rotating arm 211, the upper end surface of the supporting strip 52 is arranged in the same plane with the lower end surface of the heat conduction rotating arm 211, through this arrangement, the heat conduction rotating arm 211 can be supported by the supporting strip 52 after rotation, the supporting flap 51, the supporting strip 52 and the heat dissipation fin 33 are all plate structures made of the same metal, through this arrangement, the supporting and locking part 5 can conduct heat; the width size of the limiting guide strip 34 is greater than the thickness size of the heat dissipation fin 33, the heat dissipation extension strip group 42 is arranged between the limiting guide strip 34 and the heat conduction base 32, through this arrangement, the heat dissipation extension strip group 42 can be limited and guided, the length size of the heat dissipation extension strip group 42 is the same as the length size of the heat dissipation fin 33, the abutting strips 202 are all arranged on the right side of the fixed heat dissipation part 3, the left end surface of the abutting strip 202 is in close contact with the right end of the heat conduction base 32, through this arrangement, the fixed heat dissipation part 3 can be limited, avoiding the influence of the pulling force of the elastic pull rope 45 on the position of the fixed heat dissipation part 3, the groove depth size of the storage cover 66 is the same as the groove depth size of the storage groove 65, the thickness size of the heat conduction silica gel sheet two 67 is greater than the groove depth size of the storage groove 65, through this arrangement, the heat conduction silica gel sheet two 67 after unfolding protrudes from the storage groove 65 and the storage cover 66.

[0040] As Figures 2-8 , Figures 11-13As shown, the hole position of the guide block 209 is fixedly connected with the damping sleeve 208, the inner side of the damping sleeve 208 is provided with the damping rod 207, the both ends of the damping rod 207 are fixedly connected with the left and right inner walls of the guide rail 206, the opposite faces of the heat conduction rotating arm 211 are provided with the positioning rail groove 212, the front and rear sides of the frame body 201 are provided with the mounting port 204 which is located at the left side of the heat conduction rotating arm 211, the left side of the mounting port 204 is provided with the through hole 205, the supporting flap 51 is provided with the guide hole 53 which is aligned with the through hole 205, the inner side of the guide hole 53 is slidably connected with the abutting rod 54 which is located at the inner side of the through hole 205, the left side of the supporting flap 51 is rotatably connected with the adjusting bolt 55, the outer side of the adjusting bolt 55 is threadedly connected with the linkage strip 56 which is fixedly connected with the left end of the abutting rod 54, the inner side of the mounting port 204 is mounted with the positioning guide part 7, the positioning guide part 7 comprises the housing 71 which is fixedly connected with the inner side of the mounting port 204, the inner side of the housing 71 is provided with the guide pin 72, the inner side of the guide pin 72 is provided with the guide cavity 73, the inner side of the guide cavity 73 is slidably connected with the limiting rod 74, the right end of the limiting rod 74 is fixedly connected with the inner wall of the housing 71, the outer side of the limiting rod 74 is sleeved with the second spring 75 which is located at the plane side of the guide pin 72, the left side of the housing 71 is provided with the insertion hole 76 which is communicated with the through hole 205, and the insertion hole 76 is located at one side of the plane end of the guide pin 72, the right end of the abutting rod 54 is located at the inner side of the insertion hole 76, through the above arrangement, the guide pin 72 of the positioning guide part 7 is extruded in the process of rotating the heat conduction rotating arm 211, and the guide pin 72 is displaced to the deep part of the housing 71, after the heat conduction rotating arm 211 is rotated, the guide pin 72 is reset under the action of the second spring 75 and inserted into the positioning rail groove 212, then the user adjusts the displacement of the linkage strip 56 to the right by rotating the adjusting bolt 55, so that the linkage strip 56 drives the abutting rod 54 to displace to the right and insert into the inner side of the housing 71 of each positioning guide part 7, abutting against the guide pin 72 and limiting the guide pin 72, so that the guide pin 72 cannot be separated from the positioning rail groove 212, at this time, through the cooperation of the guide pin 72, the positioning rail groove 212 and the guide block 209, the heat conduction rotating arm 211 can be guided and limited in movement, so that the heat conduction rotating arm 211 can only translate, and the structure after the main frame part 2 is rotated and unfolded cannot be bent, which prepares for the stable connection of the subsequent password card main body 1 to the insertion interface end.The distance is arranged between the linkage strip 56 and the supporting fold plate 51, the linkage strip 56 can be displaced to the right through the arrangement, the diameter size of the guide pin 72 is same with the track width size of the positioning track slot 212, the guide pin 72 is arranged in left-right transverse alignment with the positioning track slot 212, the positioning track slot 212 and the guide pin 72 are tightly and stably matched through the rotation of the heat conduction rotating arm 211, the end of the guide pin 72 close to the heat conduction rotating arm 211 is arranged as a round head, the round head end of the guide pin 72 protrudes from the shell 71, the rotation of the heat conduction rotating arm 211 can automatically press the guide pin 72 into the deep part of the shell 71 through the arrangement, the gap is arranged between the guide pin 72 and the inner wall of the shell 71, the exhaust passage is arranged on the side of the guide cavity 73 away from the limiting rod 74, the gas in the shell 71 and the guide cavity 73 can be exhausted when the guide pin 72 is displaced, and the guide pin 72 is not affected by the air pressure; The protection slot 62 for accommodating the gold finger of the password card body 1 is arranged on the left side of the heat conduction shell 61, the elastic protection pads 63 are fixedly connected on the inner upper and lower sides of the protection slot 62, the elastic protection pads 63 are attached to the upper and lower sides of the gold finger of the password card body 1, the protection slot 62 and the elastic protection pads 63 can protect the gold finger of the password card body 1 through the arrangement, and the scratch of the gold finger of the password card body 1 caused by vibration, external dust or sharp objects is avoided.

[0041] Workflow: SM4 encryption and decryption algorithm network security device security connection device, namely the password card, the installation and use of cooling operation as follows, must know one: the password card body 1 of the scheme is designed to be inserted vertically into the interface of the device mainboard, connected with the network security device, suitable for the device case environment equipped with air cooling fan; Must know two: the protection slot 62 and the elastic protection pad 63 can protect the gold finger of the password card body 1 in the normal state of the device, avoid scratching the gold finger of the password card body 1 caused by vibration, external dust or sharp objects; Must know three: the network security device described in the subsequent description refers to the server, firewall and other devices, which can support the insertion and connection of the password card body 1; Preparation operation before installation: the user can hold the left part of the frame body 201 of the main frame part 2 with the left hand, hold the heat conduction sleeve 61 of the expandable heat conduction part 6 with the right hand, then pull the heat conduction sleeve 61 to the right with the right hand, drive the entire expandable heat conduction part 6 to the right, this action will make the gold finger of the password card body 1 out of the protection of the protection slot 62 and the elastic protection pad 63, and the gold finger of the password card body 1 will be exposed, at the same time, the expandable heat conduction part 6 will also lose the restriction of rotation, then the user can turn the expandable heat conduction part 6 to the left by 180 degrees, this turning will drive the heat conduction arm 211 to turn by 180 degrees, on the one hand, the heat conduction arm 211 will contact the bearing folding plate 51 and the bearing strip 52 of the bearing locking part 5, thereby establishing heat conduction between the expandable heat conduction part 6 and the bearing locking part 5 through the heat conduction arm 211; On the other hand, in the process of turning the heat conduction arm 211, the guide pin 72 of the positioning guide part 7 will be extruded, forcing the guide pin 72 to displace to the deep part of the housing 71, when the heat conduction arm 211 is turned to the end, the guide pin 72 will be reset under the action of the second spring 75 and inserted into the positioning rail slot 212, then the user adjusts the connecting rod 56 to the right by turning the adjusting bolt 55, so that the connecting rod 56 drives the abutting rod 54 to the right and inserts into the inside of the housing 71 of each positioning guide part 7, abutting against the guide pin 72, limiting the guide pin 72, to ensure that the guide pin 72 cannot disengage from the positioning rail slot 212, at this time, through the cooperation of the guide pin 72, the positioning rail slot 212 and the guide block 209, the movement of the heat conduction arm 211 can be guided and limited, so that the heat conduction arm 211 can only translate, ensuring that the structure of the main frame part 2 after turning and unfolding will not be bent, and preparing for the stable insertion of the password card body 1 into the interface.Meanwhile, the rotating displacement of the expandable heat-conducting part 6 will drive the elastic pull rope 45 to rotate and displace leftward, and in turn drive the rotating block 44 to rotate. At this time, the leftward pulling force of the elastic pull rope 45 is changed into rightward pulling force, so that the elastic pull rope 45 is elastically contracted, and the whole extended heat-dissipating part 4 is pulled to displace leftward and extend based on the fixed heat-dissipating part 3, so as to complete the extension and unfolding between the fixed heat-dissipating part 3 and the extended heat-dissipating part 4. The extended heat-dissipating part 4 after displacement will contact with the supporting folding plate 51 of the supporting and locking part 5, and through the supporting and locking part 5, the heat conduction between the extended heat-dissipating part 4 and the heat-conducting rotating arm 211 is established. Finally, the user needs to unfold the expandable heat-conducting part 6, and take off the rubber band 69 on both sides of the storage cover 66 from the convex rod 68, so as to no longer limit the rotation of the storage cover 66. At this time, the user can rotate the storage cover 66 on both sides, so that the heat-conducting silica gel sheet two 67 stored in the storage cover 66 and the storage groove 65 in the bent state is unfolded flat, and the unfolding of the expandable heat-conducting part 6 is completed (as shown in; Figure 18As shown), through the above steps, that is, the pre-installation preparation operation can be completed; installation connection operation: first open the network security device of the security connection device to be installed the shell cover, expose the mainboard in the device, and the interface end on the mainboard, at this time can be vertically downward to expose the gold finger of the password card body 1 into the interface end, complete the connection of the password card body 1 and the device, through the password card body 1 can provide efficient encryption and decryption services to the device, ensure the security of data in the process of transmission and storage, its support SM4 algorithm, can carry out data encryption and decryption processing, at the same time has identity authentication, digital signature and data integrity verification function, provides comprehensive security guarantee for network security device, after connection, cover the shell cover of the device again, the installation reset of the shell cover will press down the expandable heat conduction part 6, on the one hand, make the shell cover and the expanded heat conduction silica gel sheet two 67 of the expandable heat conduction part 6 tightly fit, on the other hand, the shell cover will further press down the heat conduction rotating arm 211 and the guide block 209 through the expandable heat conduction part 6, force the first spring 210 to shrink, due to the setting of the positioning guide part 7 and the positioning rail groove 212, the heat conduction rotating arm 211 and the frame 201 cannot be bent, at this time, the elastic force of the first spring 210 will exert a positive downward pressure on the frame 201, and then exert a positive downward pressure on the password card body 1 in the frame 201, at the same time, the damping of the damping rod 207 and the damping sleeve 208 on the guide block 209 makes the main frame part 2 maintain its state after being expanded and pressed by the shell cover, and it will not change due to slight vibration, so as to ensure that the gold finger of the password card body 1 and the interface end maintain close and stable contact, guarantee the reliability of data transmission and the normal operation of the password card body 1, avoid the password card body 1 from being separated from the contact connection with the interface due to vibration or other reasons;The heat dissipation cooling operation: the password card body 1 generates heat when running for a long time under high load, at this time the heat-conducting silica gel sheet 1 31 and the heat-conducting base 32 will conduct heat to each heat dissipation fin 33, the heat dissipation fin 33 will conduct part of the heat to each heat dissipation extension strip group 42 while dissipating heat, the heat dissipation extension strip group 42 will transfer heat to the heat-conducting rotating arm 211 through the supporting folded plate 51 and the supporting strip 52 of the supporting locking part 5, then the heat-conducting rotating arm 211 will conduct heat to the heat-conducting sleeve 61 of the expandable heat-conducting part 6, and then the heat-conducting sleeve 61 will transfer heat to the heat-conducting silica gel sheet 2 67, and finally conduct heat to the entire machine shell cover. Since the extension between the fixed heat dissipation part 3 and the extended heat dissipation part 4 is extended and unfolded, the surface area is increased, which can contact more air, thereby improving the effect of air cooling and heat dissipation. At the same time, the machine shell cover also increases the heat dissipation area, further improves the heat dissipation efficiency, effectively reduces the temperature of the password card body 1, ensures its stable operation and performance, realizes the safety connection device which can protect the golden finger from being damaged when not installed and used, and can be unfolded in the machine shell of the network security equipment when installed and used, which not only increases the heat dissipation area, improves the air cooling efficiency and has low cost, but also ensures the tight and stable connection between the golden finger and the interface end, guarantees the reliability of data transmission, and solves the problems of limited heat dissipation performance or high cost of each heat dissipation cooling mode of the existing safety connection device, i.e. the password card.

[0042] The principles and embodiments of the present application are described in this paper, and the above examples are only used to help understand the method and core idea of the present application. The above is only the preferred embodiment of the present application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary technical personnel in this technical field, without departing from the principles of the present application, some improvements, decorations or changes can be made, or the above technical features can be combined in a proper way; these improvements, decorations, changes or combinations, or the direct application of the inventive concept and technical scheme to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A secure connection device for a network security device using an SM4 encryption and decryption algorithm, comprising a password card body (1), a main frame (2), a fixed heat dissipation portion (3), an extended heat dissipation portion (4), a supporting locking portion (5), an expandable heat conduction portion (6) and a positioning and guiding portion (7), characterized in that: The main frame portion (2) includes a frame body (201), the lower side of the frame body (201) is fixedly connected to a support frame (203), the inner right side of the frame body (201) is fixedly connected to a support bar (202), the inner side of the frame body (201) is fixedly connected to a password card body (1), and the password card body (1) is located between the support bar (202) and the support frame (203), the front and rear sides of the frame body (201) are provided with guide rails (206), the inner sides of the guide rails (206) are slidably connected to guide blocks (209), a first spring (210) is installed between the right end surface of the guide block (209) and the right inner wall of the guide rail (206), one end of the rotating rod of the guide block (209) is rotatably connected to a heat conducting rotating arm (210) arranged horizontally. 1), a group of heat-conducting rotating arms (211) are provided with an expandable heat-conducting part (6) at the right end thereof, the expandable heat-conducting part (6) comprising a heat-conducting sleeve (61) fixedly connected to the heat-conducting rotating arm (211), a storage slot (64) higher than the password card body (1) is provided on the left side of the heat-conducting sleeve (61), a storage tank (65) is provided on the right side of the heat-conducting sleeve (61), a pair of storage covers (66) symmetrically arranged in an upper and lower direction are rotatably connected to the right side of the heat-conducting sleeve (61) through a connecting soft belt, a heat-conducting silicone sheet (67) in a bent state is fixedly connected between the storage cover (66) and the storage tank (65), a convex rod (68) is fixedly connected to the front and rear sides of the storage cover (66), and the outer sides of the upper and lower convex rods (68) are both covered with rubber. The rib (69) is provided on the upper side of the password card body (1) with a fixed heat dissipation part (3) on the left side of the expandable heat-conducting part (6), and the fixed heat dissipation part (3) includes a heat-conducting silicone sheet (31) installed and attached to the upper side of the password card body (1), and the upper side of the heat-conducting silicone sheet (31) is fixedly connected to a heat-conducting base (32), and the upper side of the heat-conducting base (32) is fixedly connected to a plurality of heat dissipation fins (33) arranged at equal distances, and the upper sides of the heat dissipation fins (33) are fixedly connected to the limiting guide strips (34), and an extended heat dissipation part (4) is provided on the fixed heat dissipation part (3), and the extended heat dissipation part (4) includes a base strip (41) on the left side of a group of heat dissipation fins (33), and the right side of the base strip (41) is fixedly connected to a plurality of heat dissipation fins (33). A heat dissipation extension bar group (42) is slidably connected to the heat dissipation fin (33), the heat dissipation extension bar group (42) is composed of two extension bars and both are arranged on both sides of the heat dissipation fin (33), the inner side of the base bar (41) is provided with a turning port (43) with an upper opening, the inner side of the turning port (43) is rotatably connected to a turning block (44) aligned with the storage groove (64) in the left and right horizontal directions, the right end of the turning block (44) is fixedly connected to an elastic pull rope (45) in an elastically expanded state, the right end of the elastic pull rope (45) is fixedly connected to the inner wall of the storage groove (64), the left side of the frame (201) is provided with a supporting locking portion (5), the supporting locking portion (5) includes a supporting folding plate (51) fixed to the left side of the frame (201),The upper end surface of the supporting folding plate (51) and the lower end surface of the heat dissipation extension strip group (42) are arranged in the same plane, and the front and rear sides of the supporting folding plate (51) are fixedly connected with supporting strips (52), and the supporting strips (52) are arranged on the lower left side of the heat conduction rotating arm (211). The upper end surface of the supporting strip (52) and the lower end surface of the heat conduction rotating arm (211) are arranged in the same plane, and the supporting folding plate (51), the supporting strip (52) and the heat dissipation fin (33) are plate structures of the same metal, and the inner side of the hole position of the guide block (209) is fixedly connected with a damping The damping sleeve (208) is provided with a damping rod (207) on the inner side of each of the damping sleeves (208), and both ends of each of the damping rods (207) are fixedly connected to the left and right inner walls of the guide rail (206). A group of the heat-conducting rotating arms (211) are provided with positioning rail grooves (212) on the facing surfaces. The front and rear sides of the frame (201) are provided with mounting openings (204) on the left side of the heat-conducting rotating arms (211). A through hole (205) is provided on the left side of each of the mounting openings (204). A guide hole aligned with the through hole (205) is provided at the supporting folding plate (51). (53), the inner side of the guide hole (53) is slidably connected to a push rod (54) located inside the through hole (205), the left side of the supporting folding plate (51) is rotatably connected to an adjusting bolt (55), the outer side of the adjusting bolt (55) is threadedly connected to a linkage bar (56) fixedly connected to the left end of the push rod (54), the inner side of the mounting port (204) is installed with a positioning guide (7), the positioning guide (7) includes a shell (71) fixed to the inner side of the mounting port (204), and a guide pin (72) is provided on the inner side of the shell (71). A guide cavity (73) is provided on the inner side of the guide pin (72), and a limit rod (74) is slidably connected to the inner side of the guide cavity (73). The right end of the limit rod (74) is fixedly connected to the inner wall of the housing (71). The outer side of the limit rod (74) is sleeved with a second spring (75) located on the plane side of the guide pin (72). An insertion hole (76) connected to the through hole (205) is provided on the left side of the housing (71), and the insertion holes (76) are all located on the side of the plane end of the guide pin (72). The right end of the push rod (54) is all located on the inner side of the insertion hole (76).

2. The secure connection device of a network security device using the SM4 encryption and decryption algorithm according to claim 1, characterized in that: The width dimension of the limiting guide bar (34) is greater than the thickness dimension of the heat dissipation fin (33); the heat dissipation extension bar group (42) is arranged between the limiting guide bar (34) and the heat-conducting base (32); the length dimension of the heat dissipation extension bar group (42) is the same as the length dimension of the heat dissipation fin (33); the support bar (202) is arranged on the right side of the fixed heat dissipation part (3); the left end face of the support bar (202) is in contact with the right end of the heat-conducting base (32); the groove depth dimension of the storage cover (66) is the same as the groove depth dimension of the storage tank (65); the thickness dimension of the second heat-conducting silicone sheet (67) is greater than the groove depth dimension of the storage tank (65).

3. The secure connection device of a network security device using the SM4 encryption and decryption algorithm according to claim 1, characterized in that: A spacing is provided between the linkage bar (56) and the supporting folding plate (51); the diameter of the guide pin (72) is the same as the track width of the positioning rail groove (212); the guide pin (72) and the positioning rail groove (212) are aligned horizontally in the left and right directions; the end of the guide pin (72) close to the heat-conducting rotating arm (211) is rounded; the rounded end of the guide pin (72) protrudes from the shell (71); a gap is provided between the guide pin (72) and the inner wall of the shell (71); and an exhaust duct is provided on the side of the guide cavity (73) away from the limiting rod (74).

4. The secure connection device for a network security device using the SM4 encryption and decryption algorithm according to claim 1, characterized in that: A protective slot (62) for receiving the gold finger of the password card body (1) is provided on the left side of the heat-conducting sleeve (61). Elastic protective pads (63) are fixedly connected to the upper and lower sides of the interior of the protective slot (62). The elastic protective pads (63) are fitted to the upper and lower sides of the gold finger of the password card body (1).

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