CN215910862U - Anti-theft computer - Google Patents

Abstract

The utility model belongs to the technical field of computer equipment, in particular to the field of anti-theft computers, which comprises an anti-theft casing and a mainframe box, wherein the inner side of the anti-theft casing is provided with a side ventilation groove, the front end of the anti-theft casing is provided with an anti-theft front plate, the inner side of the anti-theft casing is provided with an anti-theft back plate, the inner side of the anti-theft back plate is provided with a back plate clamping strip, the lower end of the anti-theft casing is provided with a fixed base, the inner side of the fixed base is provided with a damp-proof bottom block, the inner side of the anti-theft casing is provided with a dust-proof side plate, the dust-proof side plate is used for fixing and supporting the anti-theft casing through the arrangement of the fixed base, the moisture-proof bottom block is used for absorbing ground water marks around the damp-proof bottom block so as to ensure the dryness of the bottom end of the anti-theft casing, the height of the damp-proof bottom block is half of the height of the fixed base, and the bottom end of the damp-proof bottom block and the fixed base are positioned at the same horizontal plane position, the top end of the damp-proof bottom block is not contacted with the bottom end of the anti-theft casing.

Description

Anti-theft computer

Technical Field

The utility model belongs to the technical field of computer equipment, and particularly relates to an anti-theft computer.

Background

The computer is commonly called computer, it is an electronic computer for high-speed calculation, it can make numerical calculation and logic calculation, and also has the function of storage and memory, and it can be operated according to program, and can automatically and high-speed process the modern intelligent electronic equipment of mass data.

The computer facilities include computer hardware facilities and computer software facilities, the computer hardware facilities refer to the collective name of various physical devices composed of electronic, mechanical and photoelectric elements and the like in a computer system, the physical devices form an organic whole according to the requirements of the system structure to provide a material basis for the operation of computer software, and with the continuous increase of the storage capacity of the computer, more and more information can be stored and memorized.

SUMMERY OF THE UTILITY MODEL

When the existing anti-theft computer carries out anti-theft protection on the mainframe box, most of the existing anti-theft computers can not avoid the influence of dust in the external environment on the mainframe box while ensuring the heat dissipation and ventilation of the mainframe box. The utility model provides an anti-theft computer, which has the characteristics that through the arrangement of a side dustproof net, under the condition of ensuring the heat dissipation and ventilation of an anti-theft casing, dust in the external environment is prevented from entering the anti-theft casing, and further the influence of the dust on a mainframe box is avoided.

The utility model provides the following technical scheme: an anti-theft computer comprises an anti-theft casing and a mainframe box, wherein a side ventilation groove is arranged on the inner side of the anti-theft casing, an anti-theft front plate is arranged at the front end of the anti-theft casing, a front plate inner window is arranged on the inner side of the anti-theft front plate, a front dust screen is arranged on the inner side of the anti-theft front plate, an anti-theft lock is arranged at the left end of the anti-theft casing, an anti-theft back plate is arranged on the inner side of the anti-theft casing, a back plate clamping strip is arranged on the inner side of the anti-theft back plate, a hinge is arranged at the right end of the anti-theft casing, a fixed base is arranged at the lower end of the anti-theft casing, a moisture-proof bottom block is arranged on the inner side of the fixed base, a dust-proof side plate is arranged on the inner side of the anti-theft casing, a side dust screen is arranged on the inner side of the dust side plate, sliding clamping blocks are arranged at the upper end and the lower end of the dust side plate, a movable circular ring is arranged at the front end of the dust side plate, the inboard of back plate card strip is provided with card strip spout, the inboard of card strip spout is provided with the slip fixture block, the inboard of card strip spout is provided with pressure sensor, the inboard of theftproof casing is provided with the installation draw-in groove.

The anti-theft casing is fixedly arranged at the upper end of the fixed base, the length of the anti-theft casing is the same as that of the fixed base, the width of the anti-theft casing is the same as that of the fixed base, the side ventilation grooves are through hole grooves with rectangular structures, the number of the side ventilation grooves is two, and the two side ventilation grooves are symmetrically arranged; through the setting of theftproof casing for protect and prevent burglary the mainframe box, through the setting in side draft groove, be used for the circulation of the inside gas of guarantee theftproof casing and external environment air, and then avoid the mainframe box to lead to overheated because of long-time the use.

The anti-theft front plate is movably connected with the anti-theft machine shell through a hinge, and the side view of the anti-theft front plate is in a trapezoidal structure; through the setting of theftproof front bezel, make things convenient for taking out, putting into of mainframe box, also be convenient for simultaneously maintain the mainframe box, through the setting of pickproof lock, avoid the theftproof front bezel to be opened at will, and then avoid the mainframe box to be stolen.

The front plate inner window is a through hole groove with a rectangular structure, the opening position of the front plate inner window corresponds to the positions of a power button, an audio interface and a USB interface in the front of the mainframe box, and the front dust screen is provided with five front dust screens; through the front bezel inner window that the through-hole groove set up, various operations are conveniently carried out to the mainframe box, through the setting of preceding dust screen, when guaranteeing the gaseous normal circulation of theftproof front bezel, reduce the influence of external environment's dust to the mainframe box.

The periphery of the outer ring of the anti-theft back plate is fixedly connected with the anti-theft machine shell, the thickness of a back plate clamping strip is the same as that of the anti-theft back plate, a plurality of rectangular hollow through hole grooves are reserved between the back plate clamping strip and the anti-theft back plate, and the positions of the through hole grooves correspond to the positions of an audio interface, a COM serial port, an Ethernet port, a power supply interface, a power supply equipment diagnosis indicator lamp, a USB interface, an integrated display card HDMI interface and an integrated display card DP display interface at the back part of the mainframe box; through the setting of theftproof back plate for to the protection at mainframe box rear portion, through the setting of back plate card strip, when realizing the mainframe box theftproof protection, can not influence and carry out operations such as normal wiring to the mainframe box.

The fixing base is of a square-shaped structure, the damp-proof bottom block is a rectangular sponge block, five damp-proof bottom blocks are arranged, the height of each damp-proof bottom block is half of the height of the fixing base, the bottom end of each damp-proof bottom block and the bottom end of the fixing base are located on the same horizontal plane, and the left end and the right end of each damp-proof bottom block are fixedly connected with the fixing base; through unable adjustment base's setting for fixed and support to the theftproof casing, through the setting of dampproofing foundation block, be used for the absorption to ground water mark around the dampproofing foundation block, and then the aridity of guarantee theftproof casing bottom, highly be the half of unable adjustment base height through dampproofing foundation block, and the bottom of dampproofing foundation block and unable adjustment base's bottom is located same horizontal plane position, makes the top of dampproofing foundation block not contact with the bottom of theftproof casing each other.

The dustproof side plates are arranged in a shape like a Chinese character 'hui', the number of the dustproof side plates is two, the width of each dustproof side plate is four fifths of the width of the installation clamping groove, the length of each dustproof side plate is equal to that of the sliding clamping block, the length of the sliding clamping block is equal to that of the installation clamping groove, the width of the sliding clamping block is one half of the width of each dustproof side plate, the size of the side dustproof net is matched with that of the side ventilation groove, and the movable circular ring is movably connected with the dustproof side plates; through the setting of side dust screen, under the circumstances of guaranteeing theftproof casing heat dissipation and ventilation, avoid the dust among the external environment to get into theftproof casing the inside, and then avoid the influence of these dusts to the mainframe box, when needs offside dust screen wash, open the theftproof front bezel earlier, then take out the dust-proof side board slowly from corresponding installation draw-in groove through removing the ring, then the offside dust screen washs the work, the width through the dust-proof side board is four fifths of installation draw-in groove width, make its mainframe box can not contact with the dust-proof side board each other.

The pressure sensor is in signal connection with the alarm device and the main control unit, and the sliding clamping block is movably connected with the rear plate clamping strip through a return spring; when putting the mainframe box into the inside of theftproof casing, the terminal removal that promotes the slip fixture block of mainframe box, after putting the mainframe box completely, slip fixture block and pressure sensor contact each other, at this moment pressure sensor receives the pressure of slip fixture block and will detect signal transmission and give the main control unit, in case take out the mainframe box from the inboard of theftproof casing, mainframe box and slip fixture block alternate segregation, the slip fixture block no longer produces pressure to pressure sensor this moment, then the signal of telecommunication of pressure sensor output disappears, and report to the police through alarm device simultaneously.

The utility model has the beneficial effects that: through the arrangement of the anti-theft front plate, the host case is convenient to be drawn out and put in, and is also convenient to be maintained, through the arrangement of the anti-theft lock, the anti-theft front plate is prevented from being opened randomly, and further the host case is prevented from being stolen, through the front plate inner window arranged in the through hole groove, various operations are convenient to be carried out on the host case, through the arrangement of the front dustproof net, the influence of dust in the external environment on the host case is reduced while the normal circulation of gas of the anti-theft front plate is ensured, through the arrangement of the fixed base, the anti-theft case is fixed and supported, through the arrangement of the moisture-proof bottom block, the moisture absorption on the ground around the moisture-proof bottom block is used, so that the dryness of the bottom end of the anti-theft case is ensured, the height of the moisture-proof bottom block is half of the height of the fixed base, and the bottom end of the moisture-proof bottom block and the bottom end of the fixed base are positioned at the same horizontal plane, so that the top end of the moisture-proof bottom block does not contact with the anti-theft case, through the arrangement of the side dust-proof net, under the condition of ensuring the heat dissipation and ventilation of the anti-theft casing, the dust in the external environment is prevented from entering the anti-theft casing, and further the influence of the dust on the mainframe box is avoided, when the side dust-proof net needs to be cleaned, the anti-theft front plate is firstly opened, then the dust-proof side plate is slowly drawn out from the corresponding mounting clamping groove through the moving ring, then the side dust-proof net is cleaned, the width of the dust-proof side plate is four fifths of the width of the mounting clamping groove, so that the mainframe box can not contact with the dust-proof side plate, when the mainframe box is placed in the anti-theft casing, the tail end of the mainframe box pushes the sliding clamping block to move, when the mainframe box is completely placed, the sliding clamping block contacts with the pressure sensor, at the moment, the pressure sensor is pressed by the sliding clamping block and sends a detected signal to the main control unit, once the mainframe box is drawn out from the inner side of the anti-theft casing, the mainframe box and the sliding clamping block are separated from each other, at the moment, the sliding clamping block does not generate pressure on the pressure sensor any more, then the electric signal output by the pressure sensor disappears, and meanwhile, the alarm device gives an alarm.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

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

FIG. 2 is a schematic perspective view of a fixing base according to the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a rear view of the present invention;

FIG. 5 is a front sectional view of the present invention;

FIG. 6 is a schematic perspective view of a dust-proof side plate according to the present invention;

FIG. 7 is a side view of the rear plate fastener strip of the present invention;

in the figure: 1. an anti-theft case; 2. a side vent slot; 3. an anti-theft front plate; 4. a front panel inner window; 5. a front dust screen; 6. an anti-theft lock; 7. an anti-theft back plate; 8. a rear plate batten; 9. a hinge; 10. a fixed base; 11. a moisture-proof bottom block; 12. a dust-proof side plate; 13. a side dust screen; 14. sliding the clamping block; 15. moving the circular ring; 16. a clamping strip sliding groove; 17. sliding the clamping block; 18. a pressure sensor; 19. installing a clamping groove; 20. a main chassis.

Detailed Description

Referring to fig. 1-7, the present invention provides the following technical solutions: an anti-theft computer comprises an anti-theft casing 1 and a mainframe box 20, wherein a side ventilation groove 2 is arranged on the inner side of the anti-theft casing 1, an anti-theft front plate 3 is arranged at the front end of the anti-theft casing 1, a front plate inner window 4 is arranged on the inner side of the anti-theft front plate 3, a front dust screen 5 is arranged on the inner side of the anti-theft front plate 3, an anti-theft lock 6 is arranged at the left end of the anti-theft casing 1, an anti-theft back plate 7 is arranged on the inner side of the anti-theft casing 1, a back plate clamping strip 8 is arranged on the inner side of the anti-theft back plate 7, a hinge 9 is arranged at the right end of the anti-theft casing 1, a fixed base 10 is arranged at the lower end of the anti-theft casing 1, a damp-proof bottom block 11 is arranged on the inner side of the anti-theft casing 1, a dust side plate 12 is arranged on the inner side of the dust side plate 12, sliding clamping blocks 14 are arranged at the upper and lower ends of the dust side plate 12, the front end of the dustproof side plate 12 is provided with a movable circular ring 15, the inner side of the rear plate clamping strip 8 is provided with a clamping strip sliding groove 16, the inner side of the clamping strip sliding groove 16 is provided with a sliding clamping block 17, the inner side of the clamping strip sliding groove 16 is provided with a pressure sensor 18, and the inner side of the antitheft casing 1 is provided with an installation clamping groove 19.

In this embodiment: the anti-theft casing 1 is fixedly arranged at the upper end of the fixed base 10, the length of the anti-theft casing 1 is the same as that of the fixed base 10, the width of the anti-theft casing 1 is the same as that of the fixed base 10, the side ventilation grooves 2 are through hole grooves with rectangular structures, the number of the side ventilation grooves 2 is two, and the two side ventilation grooves 2 are symmetrically arranged; through the setting of theftproof casing 1 for protect and prevent burglary mainframe box 20, through the setting of side draft groove 2, be used for the circulation of the inside gas of guarantee theftproof casing 1 and external environment air, and then avoid mainframe box 20 to lead to overheated because of using for a long time.

The anti-theft front plate 3 is movably connected with the anti-theft machine shell 1 through a hinge 9, and the side view of the anti-theft front plate 3 is in a trapezoidal structure; through the setting of theftproof front bezel 3, make things convenient for taking out, putting into of mainframe box 20, also be convenient for simultaneously maintain mainframe box 20, through the setting of pickproof lock 6, avoid theftproof front bezel 3 to be opened at will, and then avoid mainframe box 20 to be stolen away.

The front plate inner window 4 is a through hole groove with a rectangular structure, the opening position of the front plate inner window 4 corresponds to the positions of a power button, an audio interface and a USB interface at the front part of the main case 20, and the front dust screen 5 is provided with five parts; through the front bezel inner window 4 that the through-hole groove set up, various operations are conveniently carried out to mainframe box 20, through the setting of preceding dust screen 5, when 3 gaseous normal circulations of guard against theft front bezel are being guaranteed, the influence of external environment's dust to mainframe box 20 is reduced.

The periphery of the outer ring of the anti-theft back plate 7 is fixedly connected with the anti-theft casing 1, the thickness of the back plate clamping strip 8 is the same as that of the anti-theft back plate 7, a plurality of rectangular hollowed-out through hole grooves are reserved between the back plate clamping strip 8 and the anti-theft back plate 7, and the positions of the through hole grooves correspond to the positions of an audio interface, a COM serial port, an Ethernet port, a power supply interface, a power supply equipment diagnosis indicator lamp, a USB interface, an integrated display card HDMI interface and an integrated display card DP display interface at the back part of the main case 20; through the setting of theftproof back plate 7 for to the protection at mainframe box 20 rear portion, through the setting of back plate card strip 8, when realizing the theftproof protection to mainframe box 20, can not influence and carry out operations such as normal wiring to mainframe box 20.

The fixing base 10 is arranged in a shape like a Chinese character 'hui', the damp-proof bottom block 11 is a rectangular sponge block, five damp-proof bottom blocks 11 are arranged, the height of each damp-proof bottom block 11 is half of the height of the fixing base 10, the bottom end of each damp-proof bottom block 11 and the bottom end of the corresponding fixing base 10 are located at the same horizontal plane, and the left end and the right end of each damp-proof bottom block 11 are fixedly connected with the corresponding fixing base 10; through unable adjustment base 10's setting, be used for fixed and support to theftproof casing 1, through the setting of dampproofing end piece 11, be used for the absorption to ground water mark around the dampproofing end piece 11, and then the aridity of guarantee theftproof casing 1 bottom, highly be the half of unable adjustment base 10 height through dampproofing end piece 11, and the bottom of dampproofing end piece 11 and unable adjustment base 10 is located same horizontal plane position, make the top of dampproofing end piece 11 not contact with the bottom of theftproof casing 1 each other.

The dustproof side plate 12 is arranged in a shape like a Chinese character 'hui', the dustproof side plate 12 is provided with two dustproof side plates, the width of the dustproof side plate 12 is four fifths of the width of an installation clamping groove 19, the length of the dustproof side plate 12 is the same as that of a sliding clamping block 14, the length of the sliding clamping block 14 is the same as that of the installation clamping groove 19, the width of the sliding clamping block 14 is one half of the width of the dustproof side plate 12, the size of a side dustproof net 13 is matched with that of a side ventilation groove 2, and a movable circular ring 15 is movably connected with the dustproof side plate 12; through the setting of side dust screen 13, under the circumstances of guaranteeing theftproof casing 1 heat dissipation and ventilation, avoid the dust among the external environment to get into theftproof casing 1 the inside, and then avoid the influence of these dusts to mainframe box 20, when needs offside dust screen 13 wash, open theftproof front bezel 3 earlier, then slowly take out dustproof curb plate 12 from corresponding installation slot 19 through removing ring 15, then wash work offside dust screen 13, the width through dustproof curb plate 12 is four fifths of installation slot 19 width, make its mainframe box 20 can not contact with dustproof curb plate 12 each other.

The pressure sensor 18 is in signal connection with the alarm device and the main control unit, and the sliding fixture block 17 is movably connected with the rear plate clamp strip 8 through a return spring; when the main cabinet 20 is placed in the anti-theft casing 1, the tail end of the main cabinet 20 pushes the sliding fixture block 17 to move, after the main cabinet 20 is completely placed, the sliding fixture block 17 is in contact with the pressure sensor 18, the pressure sensor 18 is pressed by the sliding fixture block 17 at this time and sends a detected signal to the main control unit, once the main cabinet 20 is pulled out from the inner side of the anti-theft casing 1, the main cabinet 20 is separated from the sliding fixture block 17, the sliding fixture block 17 does not generate pressure on the pressure sensor 18 at this time, then an electric signal output by the pressure sensor 18 disappears, and meanwhile, an alarm is given through an alarm device.

The working principle and the using process of the utility model are as follows: through the arrangement of the anti-theft casing 1, the main case 20 is protected and prevented from theft, through the arrangement of the side ventilation groove 2, the circulation of internal gas of the anti-theft casing 1 and external environment air is ensured, the situation that the main case 20 is overheated due to long-time use is avoided, through the arrangement of the anti-theft front plate 3, the main case 20 is convenient to take out and put in, and meanwhile, the main case 20 is also convenient to maintain, through the arrangement of the anti-theft lock 6, the anti-theft front plate 3 is prevented from being randomly opened, the main case 20 is prevented from being stolen, through the front plate inner window 4 arranged in the through hole groove, various operations are convenient to be carried out on the main case 20, through the arrangement of the front dustproof net 5, the influence of dust of the external environment on the main case 20 is reduced while the normal circulation of the gas of the anti-theft front plate 3 is ensured, through the arrangement of the anti-theft back plate 7, the protection for the rear part of the main case 20 is realized, through the arrangement of the back plate clamping strip 8, when the anti-theft protection of the host case 20 is realized, the normal operation of wiring and the like on the host case 20 can not be influenced, the fixing base 10 is used for fixing and supporting the anti-theft case 1, the damp-proof bottom block 11 is used for absorbing ground water marks around the damp-proof bottom block 11 and ensuring the dryness of the bottom end of the anti-theft case 1, the height of the damp-proof bottom block 11 is half of the height of the fixing base 10, the bottom end of the damp-proof bottom block 11 and the bottom end of the fixing base 10 are positioned at the same horizontal plane position, so that the top end of the damp-proof bottom block 11 is not contacted with the bottom end of the anti-theft case 1, through the side dust screen 13, under the condition of ensuring the heat dissipation and ventilation of the anti-theft case 1, the dust in the external environment is prevented from entering the anti-theft case 1, the influence of the dust on the host case 20 is avoided, when the side dust screen 13 is required to be cleaned, firstly, the anti-theft front plate 3 is opened, then the dustproof side plate 12 is slowly drawn out from the corresponding installation clamping groove 19 through the movable ring 15, then the side dustproof net 13 is cleaned, the width of the dustproof side plate 12 is four fifths of the width of the installation clamping groove 19, so that the main case 20 of the anti-theft front plate does not contact with the dustproof side plate 12, when the main case 20 is placed in the anti-theft machine shell 1, the tail end of the main case 20 pushes the sliding clamping block 17 to move, when the main case 20 is completely placed, the sliding clamping block 17 contacts with the pressure sensor 18, the pressure sensor 18 is pressed by the sliding clamping block 17 and sends a detected signal to the main control unit, once the main case 20 is drawn out from the inner side of the anti-theft machine shell 1, the main case 20 is separated from the sliding clamping block 17, at the moment, the sliding clamping block 17 does not generate pressure on the pressure sensor 18 any more, and then the electric signal output by the pressure sensor 18 disappears, and simultaneously, the alarm is given through an alarm device.

Claims (8)

1. An anti-theft computer, characterized in that: the anti-theft device comprises an anti-theft casing and a mainframe box, wherein a side ventilation groove is formed in the inner side of the anti-theft casing, an anti-theft front plate is arranged at the front end of the anti-theft casing, a front plate inner window is formed in the inner side of the anti-theft front plate, a front dust screen is arranged in the inner side of the anti-theft front plate, an anti-theft lock is arranged at the left end of the anti-theft casing, an anti-theft back plate is arranged in the inner side of the anti-theft casing, a back plate clamping strip is arranged in the inner side of the anti-theft back plate, a hinge is arranged at the right end of the anti-theft casing, a fixed base is arranged at the lower end of the anti-theft casing, a damp-proof bottom block is arranged in the inner side of the anti-theft casing, a dust side plate is arranged in the inner side of the dust side plate, sliding blocks are arranged at the upper end and the lower end of the dust side plate, a movable circular ring is arranged at the front end of the back plate clamping strip, a clamping groove is formed in the inner side of the back plate clamping strip, the inboard of card strip spout is provided with the slip fixture block, the inboard of card strip spout is provided with pressure sensor, the inboard of theftproof casing is provided with the installation draw-in groove.

2. The anti-theft computer of claim 1, wherein: the theftproof casing is fixed to be set up in the position of unable adjustment base upper end, the length of theftproof casing is the same with unable adjustment base's length, the width of theftproof casing is the same with unable adjustment base's width, the side vent groove is the through-hole groove of rectangle structure, the side vent groove is provided with two altogether, two the side vent groove symmetry sets up.

3. The anti-theft computer of claim 1, wherein: the anti-theft front plate is movably connected with the anti-theft machine shell through a hinge, and the side view surface of the anti-theft front plate is of a trapezoidal structure.

4. The anti-theft computer of claim 1, wherein: the front plate inner window is a through hole groove with a rectangular structure, the opening position of the front plate inner window corresponds to the positions of a power button, an audio interface and a USB interface in the front of the mainframe box, and five front dust screens are arranged.

5. The anti-theft computer of claim 1, wherein: the outer lane of theftproof back plate is all around with theftproof casing fixed connection, the thickness of back plate card strip is the same with the thickness of theftproof back plate, leave a plurality of rectangular fretwork through-hole grooves between back plate card strip and the theftproof back plate, and the position of through-hole groove is corresponding with audio interface, COM serial ports, ethernet port, power source, power supply unit diagnosis pilot lamp, USB interface, integrated display card HDMI interface, integrated display card DP display interface's at mainframe box rear portion position.

6. The anti-theft computer of claim 1, wherein: the fixing base is arranged in a shape like a Chinese character 'hui', the damp-proof bottom block is a rectangular sponge block and is provided with five blocks, the height of the damp-proof bottom block is half of the height of the fixing base, the bottom of the damp-proof bottom block and the bottom of the fixing base are located at the same horizontal plane position, and the left end and the right end of the damp-proof bottom block are fixedly connected with the fixing base.

7. The anti-theft computer of claim 1, wherein: the utility model discloses a dustproof curb plate, including dustproof curb plate, installation draw-in groove, dustproof curb plate, slip fixture block, dustproof curb plate, movable circular ring and dustproof curb plate swing joint, dustproof curb plate sets up for returning font structure, dustproof curb plate is provided with two altogether, the width of dustproof curb plate is four fifths of installation draw-in groove width, the length of dustproof curb plate is the same with the length of slip fixture block, the length of slip fixture block is the same with the length of installation draw-in groove, the width of slip fixture block is the half of dustproof curb plate width, the size of side dust screen and the size phase-match in side ventilation groove, movable circular ring and dustproof curb plate swing joint.

8. The anti-theft computer of claim 1, wherein: the pressure sensor is in signal connection with the alarm device and the main control unit, and the sliding clamping block is movably connected with the rear plate clamping strip through a return spring.

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