CN112189990A

CN112189990A - Computer anti-theft device

Info

Publication number: CN112189990A
Application number: CN202011057189.XA
Authority: CN
Inventors: 张旭; 吴有龙
Original assignee: Jinling Institute of Technology
Current assignee: Jinling Institute of Technology
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-01-08

Abstract

The invention discloses a computer anti-theft device which comprises a table plate, a box body, a drawer cabinet and an opening box, wherein the tops of the drawer cabinet and the opening box are respectively welded on two symmetrical sides of the bottom of the table plate, the top of the box body is welded at the center of one side of the bottom of the table plate, which is close to the opening box, a computer component fixing mechanism is arranged inside the opening box, an alarm is arranged at one side of the drawer cabinet, which is close to the opening box, an opening is formed in the center of one side of the top of the table plate, penetrates through the top of the box body and is communicated with the inside of the box body, a hollow bottom plate is connected inside the box body in a sliding mode, a lifting mechanism used for lifting the hollow bottom plate is arranged at the bottom inside of the box body, the top of the hollow bottom plate is connected with a base. The invention not only improves the safety of the computer in the using process and protects the privacy, but also improves the using effect of the computer.

Description

Computer anti-theft device

Technical Field

The invention relates to the technical field of computers, in particular to a computer anti-theft device.

Background

Computer is commonly called computer, is a modern electronic computing machine for high-speed computation, can perform numerical computation and logic computation, and also has the function of storage and memory. The computer is a modern intelligent electronic device capable of automatically and high-speed processing mass data according to program operation, and becomes a necessity in life and work of people as the data era comes, so that a large amount of information data including confidential documents, personal privacy and other data are stored in the computer, and the theft of the computer becomes one of ways of data leakage.

Computers are placed on desks, the existing desks do not have the function of preventing computers from being stolen, the situation that the computers are stolen can occur after users leave the computers, the economic loss of the users is increased, in addition, a plurality of important files can be stored in the computers, if the computers are stolen, the economic loss of use can be further increased, the existing computers are placed on the desks without the function of protection, the computers can be collided by foreign objects when in use, the damage is caused, and the service life of the computers is shortened.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a computer anti-theft device.

In order to achieve the purpose, the invention adopts the following technical scheme:

a computer anti-theft device comprises a table plate, a box body, a drawer cabinet and an opening box, wherein the tops of the drawer cabinet and the opening box are respectively welded on two symmetrical sides of the bottom of the table plate, the top of the box body is welded at the center of one side of the bottom of the table plate, which is close to the opening box, the inside of the opening box is provided with a computer component fixing mechanism, one side of the drawer cabinet, which is close to the opening box, is provided with an alarm, the center of one side of the top of the table plate is provided with an opening, the opening penetrates through the top of the box body and is communicated with the inside of the box body, the inside of the box body is slidably connected with a hollow bottom plate, the bottom of the box body is provided with a lifting mechanism for lifting the hollow bottom plate, the top of the hollow bottom plate is slidably connected with a base, the top of the hollow bottom plate is provided with a connecting mechanism, and the mounting panel top is equipped with the simultaneous movement mechanism that is used for two L type splint of simultaneous movement, the opening part at table top articulates there is the apron, and the apron side is equipped with computer protection mechanism, hollow bottom plate top one side is equipped with the mechanism of uncapping that is used for opening the apron.

Preferably, elevating system includes the bull stick, and the bull stick rotates to be connected inside the box, the inside rotation of box is connected with second gear and fixed plate, and the fixed plate has two and parallel arrangement, the bull stick passes two fixed plate one end center departments and second gear center department, and bull stick surface welding inside second gear and two fixed plates, two fixed plate top one side all rotates and is connected with the connecting plate, and two connecting plates all rotate to be connected inside the box, two the connecting plate top rotates respectively to be connected in a hollow bottom plate bottom symmetry both ends, and the bottom is equipped with the slewing mechanism who is used for rotating the second gear in the box.

Preferably, slewing mechanism includes positive and negative motor, and positive and negative motor installs bottom in the box and is on a parallel with the bottom setting in the box, positive and negative motor's output shaft tip welding has first gear, and first gear rotation connects inside the box, first gear and second gear meshing.

Preferably, computer subassembly fixed establishment includes hollow core plate, and hollow core plate welds in the inside one side of opening case, the inside sliding connection of hollow core plate has the L template, the L template passes hollow core plate one side and sliding connection in the opening incasement portion, and the bottom mounting has electric telescopic handle in the hollow core plate, the welding of electric telescopic handle top has the movable block, and movable block sliding connection is inside hollow core plate, movable block top sliding connection is in the long limit bottom of L template, and the movable block is close to one side of L template minor face and installs first button, first button and alarm electricity are connected.

Preferably, coupling mechanism includes the bar shaped plate, and the bar shaped plate is located under the base, bottom center department installs the rotating electrical machines in the hollow bottom plate, and the output shaft top of rotating electrical machines passes hollow bottom plate top center department and welds in bar shaped plate bottom center department, bar notch has been seted up to base bottom center department, and a bar notch symmetry both sides have all been seted up microscler notch, microscler notch has a plurality of and even seting up in a bar notch symmetry both sides, and the bar shaped plate passes bar notch and sliding connection inside the base, vertical sliding connection has second button and third button respectively at bar shaped plate bottom a pair of symmetric both ends, and second button and third button are connected with alarm and positive and negative motor electricity respectively.

Preferably, the synchronous moving mechanism comprises a belt and a driving motor, the belt is rotatably connected inside the base, pulleys are rotatably connected at both ends inside the belt, and the two pulleys are rotationally connected inside the base, the base is connected with a first sliding plate and a second sliding plate in a sliding way, the first sliding plate and the second sliding plate are arranged in parallel, the upper transverse edge of the belt passes through the first sliding plate and is welded inside the first sliding plate, the lower transverse edge of the belt passes through the first sliding plate and is connected in the first sliding plate in a sliding way, the upper transverse edge of the belt passes through the second sliding plate and is connected in the second sliding plate in a sliding way, the lower transverse edge of the belt passes through the second sliding plate and is welded in the second sliding plate, the tops of the first sliding plate and the second sliding plate pass through the top of the base and are respectively welded at the centers of the bottoms of the two L-shaped clamping plates, and the driving motor is arranged at one side inside the base, and the end part of an output shaft of the driving motor is welded at the center of one side of one pulley.

Preferably, computer protection mechanism includes the curb plate, and the curb plate has two and parallel arrangement, two the curb plate welds respectively in apron one side symmetry both ends, and two equal sliding connection of curb plate in opening part and box.

Preferably, the uncovering mechanism comprises a sleeve, the bottom of the sleeve is rotatably connected to the center of one side, close to the cover plate, of the top of the hollow bottom plate, a loop bar is vertically and slidably connected to the inside of the sleeve, and the top of the loop bar penetrates through the top of the sleeve and is rotatably connected to the center of one side of the bottom of the cover plate.

Preferably, the mechanism of uncapping includes slide rail and connecting rod, and the slide rail parallel set up in apron bottom center department, the inside vertical sliding connection of slide rail has the slider, and welds in the one side that is close to the apron in hollow bottom plate top bottom, the connecting rod top is rotated and is connected in the slider bottom.

The invention has the beneficial effects that:

1. in the invention, a positive and negative motor drives a first gear to rotate, the first gear drives a second gear to rotate, the second gear drives a rotating rod to rotate, the rotating rod drives two fixing plates to rotate, the two fixing plates drive two connecting plates to move, the two connecting plates drive a hollow bottom plate to move up and down, the hollow bottom plate drives a sleeve to lift, a loop rod can move in the sleeve, the loop rod drives a cover plate to open, then a driving motor drives a pulley to rotate, the pulley drives a belt to rotate, the belt drives a first sliding plate and a second sliding plate to move in opposite directions or in opposite directions, the first sliding plate and the second sliding plate drive two L-shaped clamping plates to move in opposite directions or in opposite directions, so that a display screen of a computer can be fixed, then a strip-shaped plate passes through a strip-shaped notch, the strip-shaped plate is driven to rotate 90 degrees by using a rotating motor, a base can be limited, and the display, can drive the base and up remove when the display screen is lifted up, the base up removes and can extrude second button and third button, then the alarm can send out the police dispatch newspaper, positive and negative motor can drive the display screen decline simultaneously, it is stolen in the use to have avoided the computer, and then user's economic loss has been reduced, in addition through the setting of two curb plates when using the computer, not only prevented that the computer from being strikeed by foreign object, the condition of peeping the screen that still prevents takes place, make not only the security protection privacy of computer in the use improved, the result of use to the computer has still been improved.

2. According to the invention, one end of the long edge of the L-shaped plate, which is far away from the short edge, is fixed on one side of the case, when the case is completely pushed into the opening box, the movable plate is driven to ascend through the electric telescopic rod, when a person pulls the case, the case can drive the L-shaped plate to move, and the short edge of the L-shaped plate can extrude the first button, so that the alarm gives an alarm, and the safety of the computer case in the use process is further improved.

3. In the invention, a positive and negative motor drives a first gear to rotate, the first gear drives a second gear to rotate, the second gear drives a rotating rod to rotate, the rotating rod drives two fixing plates to rotate, the two fixing plates drive two connecting plates to move, the two connecting plates drive a hollow bottom plate to move up and down, the hollow bottom plate drives a connecting rod to move, the connecting rod drives a sliding block to move, the sliding block drives a cover plate to open, then a driving motor drives a pulley to rotate, the pulley drives a belt to rotate, the belt drives a first sliding plate and a second sliding plate to move in opposite directions or in opposite directions, the first sliding plate and the second sliding plate drive two L-shaped clamping plates to move in opposite directions or in opposite directions, so that a display screen of a computer can be fixed, then a strip-shaped plate passes through a strip-shaped notch, then a rotating motor is used to drive the strip-shaped plate to rotate 90 degrees, a base can, can drive the base and up remove when the display screen is lifted up, the base up removes and can extrude second button and third button, then the alarm can send out the police dispatch newspaper, positive and negative motor can drive the display screen decline simultaneously, it is stolen in the use to have avoided the computer, and then user's economic loss has been reduced, in addition through the setting of two curb plates when using the computer, not only prevented that the computer from being strikeed by foreign object, the condition of peeping the screen that still prevents takes place, make not only the security protection privacy of computer in the use improved, the result of use to the computer has still been improved.

Drawings

Fig. 1 is a schematic structural view of a computer antitheft device according to embodiment 1 of the present invention;

fig. 2 is a schematic view of a cover plate retracting structure of a computer anti-theft device according to embodiment 1 of the present invention;

fig. 3 is a schematic view of a bottom structure of a base of a computer anti-theft device according to embodiment 1 of the present invention;

fig. 4 is a sectional view of the inside of a base of a computer theft preventing device according to embodiment 1 of the present invention;

fig. 5 is a sectional view of the inside of an open box of a computer theft preventing device according to embodiment 1 of the present invention;

fig. 6 is an enlarged view of a computer theft preventing device according to embodiment 1 of the present invention at a;

fig. 7 is an enlarged view of a computer theft preventing device according to embodiment 1 of the present invention at B;

FIG. 8 is a sectional view of the inside of a hollow base plate of a computer theft preventing device according to embodiment 1 of the present invention;

fig. 9 is a partial structural schematic diagram of a computer anti-theft device according to embodiment 2 of the present invention.

In the figure: 1 table plate, 2 drawer cabinets, 3 open boxes, 4 boxes, 5 positive and negative motors, 6 first gears, 7 second gears, 8 rotating rods, 9 connecting plates, 10 cabinets, 11 alarms, 12 fixing plates, 13 side plates, 14 hollow bottom plates, 15 bases, 16 display screens, 17 cover plates, 18 strip-shaped notches, 19 long notches, 20 mounting plates, 21 belts, 22 first sliding plates, 23 pulleys, 24 second sliding plates, 25L-shaped clamping plates, 26 movable blocks, 27 electric telescopic rods, 28 first buttons, 29L-shaped plates, 30 hollow plates, 31 grooves, 32 strip-shaped plates, 33 second buttons, 34 third buttons, 35 sleeves, 36 sleeve rods, 37 rotating motors, 38 sliding rails, 39 connecting rods, 40 sliding blocks and 41 driving motors.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-8, a computer anti-theft device comprises a table plate 1, a box body 4, a drawer cabinet 2 and an opening box 3, wherein the tops of the drawer cabinet 2 and the opening box 3 are respectively welded on two symmetrical sides of the bottom of the table plate 1, the top of the box body 4 is welded at the center of one side of the bottom of the table plate 1, which is adjacent to the opening box 3, a computer component fixing mechanism is arranged inside the opening box 3, an alarm 11 is arranged at one side of the drawer cabinet 2, which is adjacent to the opening box 3, an opening is arranged at the center of one side of the top of the table plate 1, which passes through the top of the box body 4 and is communicated with the inside of the box body 4, a hollow bottom plate 14 is connected inside the box body 4 in a sliding manner, a lifting mechanism for lifting the hollow bottom plate 14 is arranged at the bottom of the box body 4, a base 15 is connected at the top of the, and base 15 top sliding connection has L type splint 25, and L type splint 25 have two and the symmetry sets up, and the mounting panel 20 top is equipped with the synchronous motion mechanism who is used for two L type splint 25 of synchronous motion, and the opening part at table 1 top articulates there is apron 17, and apron 17 side is equipped with computer protection mechanism, and hollow bottom plate 14 top one side is equipped with the mechanism of uncapping that is used for opening apron 17.

In the invention, the lifting mechanism comprises a rotating rod 8, the rotating rod 8 is rotatably connected inside a box body 4, a second gear 7 and two fixed plates 12 are rotatably connected inside the box body 4, two fixed plates 12 are arranged in parallel, the rotating rod 8 penetrates through the centers of one end of the two fixed plates 12 and the center of the second gear 7, the surface of the rotating rod 8 is welded inside the second gear 7 and the two fixed plates 12, one side of the top of each fixed plate 12 is rotatably connected with a connecting plate 9, the two connecting plates 9 are rotatably connected inside the box body 4, the top of each connecting plate 9 is respectively rotatably connected with two symmetrical ends of the bottom of a hollow bottom plate 14, a rotating mechanism for rotating the second gear 7 is arranged at the inner bottom of the box body 4, the rotating mechanism comprises a positive and negative motor 5, the positive and negative motor 5 is arranged at the inner bottom of the box body 4 and is parallel to the inner bottom of the box body, the first gear 6 is rotatably connected inside the box body 4, the first gear 6 is meshed with the second gear 7, the computer component fixing mechanism comprises a hollow plate 30, the hollow plate 30 is welded on one side inside the open box 3, an L-shaped plate 29 is slidably connected inside the hollow plate 30, the L-shaped plate 29 penetrates through one side of the hollow plate 30 and is slidably connected inside the open box 3, an electric telescopic rod 27 is installed at the bottom inside the hollow plate 30, a movable block 26 is welded at the top of the electric telescopic rod 27 and is slidably connected inside the hollow plate 30, the top of the movable block 26 is slidably connected to the bottom of the long edge of the L-shaped plate 29, a first button 28 is installed on one side, close to the short edge of the L-shaped plate 29, of the movable block 26, the first button 28 is electrically connected with the alarm 11, the connecting mechanism comprises a strip-shaped plate 32, the strip-shaped plate 32 is located under the, the top end of an output shaft of the rotating motor 37 penetrates through the center of the top of the hollow bottom plate 14 and is welded at the center of the bottom of the strip-shaped plate 32, the center of the bottom of the base 15 is provided with a strip-shaped notch 18, two symmetrical sides of the strip-shaped notch 18 are provided with long notches 19, the long notches 19 are uniformly arranged at two symmetrical sides of the strip-shaped notch 18, the strip-shaped plate 32 penetrates through the strip-shaped notch 18 and is connected to the inside of the base 15 in a sliding manner, two symmetrical ends of the bottom of the strip-shaped plate 32 are respectively and vertically and slidably connected with a second button 33 and a third button 34, the second button 33 and the third button 34 are respectively and electrically connected with the alarm 11 and the positive and negative motor 5, the synchronous moving mechanism comprises a belt 21 and a driving motor 41, the belt 21 is rotatably connected to the inside of the base 15, two ends of the inside of the belt 21 are respectively and rotatably connected with pulleys, the first sliding plate 22 and the second sliding plate 24 are arranged in parallel, the upper transverse edge of the belt 21 passes through the first sliding plate 22 and is welded inside the first sliding plate 22, the lower transverse edge of the belt 21 passes through the first sliding plate 22 and is connected inside the first sliding plate 22 in a sliding manner, the upper transverse edge of the belt 21 passes through the second sliding plate 24 and is connected inside the second sliding plate 24 in a sliding manner, the lower transverse edge of the belt 21 passes through the second sliding plate 24 and is welded inside the second sliding plate 24, the top parts of the first sliding plate 22 and the second sliding plate 24 both pass through the top part of the base 15 and are respectively welded at the centers of the bottoms of the two L-shaped clamping plates 25, the driving motor 41 is arranged at one side inside the base 15, the end part of the output shaft of the driving motor 41 is welded at the center of one side of one pulley 23, the computer protection mechanism comprises two side plates 13, the two side plates 13 are arranged in parallel, the two side plates 13, the cover opening mechanism comprises a sleeve 35, the bottom of the sleeve 35 is rotatably connected to the center of one side of the top of the hollow bottom plate 14, which is adjacent to the cover plate 17, a sleeve rod 36 is vertically and slidably connected to the inside of the sleeve 35, and the top of the sleeve rod 36 penetrates through the top of the sleeve 35 and is rotatably connected to the center of one side of the bottom of the cover plate 17.

The working principle of the embodiment is as follows: in actual use, the forward and reverse motor 5 drives the first gear 6 to rotate, the first gear 6 drives the second gear 7 to rotate, the second gear 7 drives the rotating rod 8 to rotate, the rotating rod 8 drives the two fixing plates 12 to rotate, the two fixing plates 12 drive the two connecting plates 9 to move, the two connecting plates 9 drive the hollow bottom plate 14 to move up and down, the hollow bottom plate 14 drives the sleeve 35 to move up and down, the sleeve rod 36 moves into the sleeve 35, the sleeve rod 36 drives the cover plate 17 to open, then the pulley 23 is driven by the driving motor 41 to rotate, the pulley 23 drives the belt 21 to rotate, the belt 21 drives the first sliding plate 22 and the second sliding plate 24 to move towards or away from each other, the first sliding plate 22 and the second sliding plate 24 drive the two L-shaped clamping plates 25 to move towards or away from each other, so that the two opposite ends of the transverse edges of the two L-shaped clamping plates 25 slide into the two grooves 31, thereby fixing the, then the strip-shaped plate 32 passes through the strip-shaped notch 18, the rotating motor 37 is used for driving the strip-shaped plate 32 to rotate 90 degrees, the base 15 can be limited, the display screen 16 can be moved according to the requirement of a user through the arrangement of the long notch 19, when the display screen 16 is lifted, the base 15 is driven to move upwards, the base 15 moves upwards to extrude the second button 33 and the third button 34, the alarm 11 gives an alarm, and meanwhile, the positive and negative motors 5 drive the display screen 16 to descend, so that the computer is prevented from being stolen in the use process, the economic loss of the user is reduced, in addition, when the computer is used, through the arrangement of the two side plates 13, the computer is prevented from being impacted by foreign objects, the condition of peeping the screen is also prevented, the safety of the computer in the use process is improved, the privacy is protected, and the use effect of the computer is also improved, the one end of keeping away from the minor face to L template 28 long limit is fixed in quick-witted case 10 one side, when pushing quick-witted case 10 in the opening case 3 completely, drives fly leaf 26 through electric telescopic handle 27 and rises, and when someone pulled quick-witted case 10, quick-witted case 10 can drive L template 29 and remove, then the minor face of L template 29 can extrude first button 28 for alarm 11 sends out the police dispatch newspaper, and then has improved the security of computer machine case 10 in the use.

Example 2

Referring to fig. 9, the present embodiment differs from embodiment 1 only in that the lid opening mechanism includes a slide rail 38 and a connecting rod 39, the slide rail 38 is opened at the bottom center of the lid 17 in parallel, a slider 40 is vertically and slidably connected inside the slide rail 38, the bottom of the connecting rod 39 is welded to one side of the top of the hollow bottom plate 14 close to the lid 17, and the top of the connecting rod 39 is rotatably connected to the bottom of the slider 40.

The working principle of the embodiment is as follows: in actual use, the forward and reverse motor 5 drives the first gear 6 to rotate, the first gear 6 drives the second gear 7 to rotate, the second gear 7 drives the rotating rod 8 to rotate, the rotating rod 8 drives the two fixing plates 12 to rotate, the two fixing plates 12 drive the two connecting plates 9 to move, the two connecting plates 9 drive the hollow bottom plate 14 to move up and down, the hollow bottom plate 14 drives the connecting rod 39 to move, the connecting rod 39 drives the sliding block 40 to move, the sliding block 40 drives the cover plate 17 to open, then the driving motor 41 drives the pulley 23 to rotate, the pulley 23 drives the belt 21 to rotate, the belt 21 drives the first sliding plate 22 and the second sliding plate 24 to move towards or away from each other, the first sliding plate 22 and the second sliding plate 24 drive the two L-shaped clamping plates 25 to move towards or away from each other, so that the two opposite ends of the transverse edges of the two L-shaped clamping plates 25 slide into the two grooves 31, thereby, then the strip-shaped plate 32 passes through the strip-shaped notch 18, the rotating motor 37 is used to drive the strip-shaped plate 32 to rotate 90 degrees, the base 15 can be limited, and the display screen 16 can be moved according to the requirements of users through the arrangement of the long notch 19, when the display screen 16 is lifted, the base 15 is moved upward to press the second button 33 and the third button 34, the alarm 11 will give an alarm, and the positive and negative motors 5 will drive the display screen 16 to descend, so as to prevent the computer from being stolen during the use process, further reducing the economic loss of users, in addition, through the arrangement of the two side plates 13 when using the computer, not only the computer is prevented from being impacted by foreign objects, but also the condition of peeping the screen is prevented, therefore, the safety of the computer in the using process is improved, the privacy is protected, and the using effect of the computer is improved.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof, and it is therefore intended that the embodiments be considered as illustrative and not restrictive in all respects, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, any reference signs in the claims being therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A computer anti-theft device comprises a table plate (1), a box body (4), a drawer cabinet (2) and an opening box (3), and is characterized in that the tops of the drawer cabinet (2) and the opening box (3) are respectively fixedly connected to two symmetrical sides of the bottom of the table plate (1), the top of the box body (4) is fixedly connected to the center of one side of the bottom of the table plate (1) close to the opening box (3), a computer component fixing mechanism is arranged inside the opening box (3), an alarm (11) is installed on one side of the drawer cabinet (2) close to the opening box (3), an opening is formed in the center of one side of the top of the table plate (1), the opening penetrates through the top of the box body (4) and is communicated with the inside of the box body (4), a hollow bottom plate (14) is connected inside the box body (4) in a sliding mode, and a lifting mechanism used for lifting the hollow bottom plate (14) is arranged at the bottom, hollow bottom plate (14) top sliding connection has base (15), and hollow bottom plate (14) top is equipped with the coupling mechanism who is used for connecting base (15), base (15) inside center department fixedly connected with mounting panel (20), and base (15) top sliding connection has L type splint (25), L type splint (25) have two and symmetry to set up, and mounting panel (20) top is equipped with the synchronous motion mechanism who is used for two L type splint (25) of synchronous motion, the opening part at table (1) top articulates there is apron (17), and apron (17) side is equipped with computer protection mechanism, hollow bottom plate (14) top one side is equipped with the mechanism of uncapping that is used for opening apron (17).

2. A computer theft protection device according to claim 1, characterized in that said lifting mechanism comprises a turning bar (8), the rotating rod (8) is rotationally connected with the inside of the box body (4), the inside of the box body (4) is rotationally connected with a second gear (7) and a fixed plate (12), two fixing plates (12) are arranged in parallel, the rotating rod (8) passes through the center of one end of each fixing plate (12) and the center of the second gear (7), the surface of the rotating rod (8) is fixedly connected with the second gear (7) and the insides of the two fixed plates (12), one side of the top of each fixed plate (12) is rotatably connected with a connecting plate (9), the two connecting plates (9) are rotatably connected inside the box body (4), the tops of the two connecting plates (9) are respectively rotatably connected with two symmetrical ends of the bottom of the hollow bottom plate (14), and a rotating mechanism for rotating the second gear (7) is arranged at the bottom in the box body (4).

3. The computer anti-theft device according to claim 2, characterized in that the rotating mechanism comprises a positive and negative motor (5), the positive and negative motor (5) is installed at the bottom inside the box body (4) and is arranged parallel to the bottom inside the box body (4), a first gear (6) is fixedly connected to the end of the output shaft of the positive and negative motor (5), the first gear (6) is rotatably connected inside the box body (4), and the first gear (6) is meshed with a second gear (7).

4. A computer security device according to claim 3, wherein said computer assembly securing means comprises a hollow plate (30), and the hollow plate (30) is fixedly connected with one side of the inner part of the open box (3), the inner part of the hollow plate (30) is connected with an L-shaped plate (29) in a sliding way, the L-shaped plate (29) penetrates through one side of the hollow plate (30) and is connected to the inside of the open box (3) in a sliding manner, an electric telescopic rod (27) is arranged at the bottom in the hollow plate (30), the top of the electric telescopic rod (27) is fixedly connected with a movable block (26), the movable block (26) is connected inside the hollow plate (30) in a sliding way, the top of the movable block (26) is connected to the bottom of the long side of the L-shaped plate (29) in a sliding way, and a first button (28) is installed on one side of the movable block (26) close to the short side of the L-shaped plate (29), and the first button (28) is electrically connected with the alarm (11).

5. The computer anti-theft device according to claim 4, characterized in that the connecting mechanism comprises a strip-shaped plate (32), the strip-shaped plate (32) is located under the base (15), the center of the bottom in the hollow bottom plate (14) is provided with a rotating motor (37), the top end of the output shaft of the rotating motor (37) passes through the center of the top of the hollow bottom plate (14) and is fixedly connected to the center of the bottom of the strip-shaped plate (32), the center of the bottom of the base (15) is provided with a strip-shaped notch (18), two symmetrical sides of the strip-shaped notch (18) are provided with long notches (19), the long notches (19) are uniformly provided with a plurality of symmetrical sides of the strip-shaped notch (18), the strip-shaped plate (32) passes through the strip-shaped notch (18) and is slidably connected to the inside of the base (15), two symmetrical ends of the bottom of the strip-shaped plate (32) are respectively and vertically and slidably connected with a second button (33) and, and the second button (33) and the third button (34) are respectively and electrically connected with the alarm (11) and the positive and negative motor (5).

6. The computer anti-theft device according to claim 5, characterized in that the synchronous moving mechanism comprises a belt (21) and a driving motor (41), the belt (21) is rotatably connected inside the base (15), pulleys (23) are rotatably connected at both ends of the inside of the belt (21), two pulleys (23) are rotatably connected inside the base (15), a first sliding plate (22) and a second sliding plate (24) are slidably connected inside the base (15), the first sliding plate (22) and the second sliding plate (24) are arranged in parallel, the upper transverse edge of the belt (21) passes through the first sliding plate (22) and is fixedly connected inside the first sliding plate (22), the lower transverse edge of the belt (21) passes through the first sliding plate (22) and is slidably connected inside the first sliding plate (22), the upper transverse edge of the belt (21) passes through the second sliding plate (24) and is slidably connected inside the second sliding plate (24), and the lower transverse edge of the belt (21) passes through the second sliding plate (24) and is fixedly connected to the inside of the second sliding plate (24), the tops of the first sliding plate (22) and the second sliding plate (24) pass through the top of the base (15) and are respectively fixedly connected to the centers of the bottoms of the two L-shaped clamping plates (25), the driving motor (41) is installed on one side of the inside of the base (15), and the end part of an output shaft of the driving motor (41) is fixedly connected to the center of one side of one of the pulleys (23).

7. The computer anti-theft device according to claim 6, characterized in that the computer protection mechanism comprises two side plates (13), the two side plates (13) are arranged in parallel, the two side plates (13) are fixedly connected to two symmetrical ends of one side of the cover plate (17), and the two side plates (13) are slidably connected to the opening and the inside of the box body (4).

8. The computer anti-theft device according to claim 7, characterized in that the cover opening mechanism comprises a sleeve (35), the bottom of the sleeve (35) is rotatably connected to the top of the hollow bottom plate (14) near the center of one side of the cover plate (17), a sleeve rod (36) is vertically and slidably connected to the inside of the sleeve (35), and the top of the sleeve rod (36) passes through the top of the sleeve (35) and is rotatably connected to the center of one side of the bottom of the cover plate (17).

9. The computer anti-theft device according to claim 7, characterized in that the cover opening mechanism comprises a slide rail (38) and a connecting rod (39), the slide rail (38) is arranged at the center of the bottom of the cover plate (17) in parallel, a slide block (40) is vertically and slidably connected inside the slide rail (38), the bottom of the connecting rod (39) is fixedly connected to the top of the hollow bottom plate (14) close to one side of the cover plate (17), and the top of the connecting rod (39) is rotatably connected to the bottom of the slide block (40).