CN215379466U

CN215379466U - Protective device for computer protection

Info

Publication number: CN215379466U
Application number: CN202121541656.6U
Authority: CN
Inventors: 许兴梅
Original assignee: Individual
Current assignee: Nanjing Jiangning Higher Vocational And Technical School
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-31
Anticipated expiration: 2031-07-07

Abstract

The application discloses a protective device for protecting a computer, which comprises a shell and a buffer mechanism arranged in an inner cavity of the shell, wherein the top end of the outer wall of the shell is fixedly connected with the center of the bottom end of the outer wall of a cavity plate, and a plurality of wire holes are embedded in the front side of the shell; buffer gear is including placing the board, place board top left and right sides fixed connection baffle bottom respectively, two baffle center department has inlayed the heating panel respectively, two one side that the baffle is close to each other is fixed connection cushion respectively, baffle bottom fixed connection roof outer wall bottom left and right sides. This application easy operation, through rotating the pivot, the pivot drives the third bevel gear and rotates thereupon, and third bevel gear meshing complex second bevel gear rotates, and second bevel gear drives limit screw and rotates, and the U template with limit screw thread fit drives the clamp plate decline under the restriction of telescopic link, makes the clamp plate compress tightly quick-witted case top, realizes quick fixed of quick-witted case, the quick-witted case of being convenient for simultaneously take.

Description

Protective device for computer protection

Technical Field

The application relates to the field of computer protection, in particular to a protection device for computer protection.

Background

The computer is a modern electronic computer for high-speed calculation, can perform numerical calculation and logic calculation, has a memory function, is a modern intelligent electronic device capable of operating according to a program and automatically processing mass data at high speed, and the case is one of important components of the computer.

The existing computer case is placed for use, and no protective mechanism is arranged outside the computer case, so that the computer case is easily damaged due to collision, and meanwhile, a large amount of dust can be adhered to the surface of the computer case, and the heat dissipation of the computer case is influenced by the fact that the dust enters the computer case and the cleaning difficulty is increased. Therefore, a protection device for computer protection is proposed to address the above problems.

Disclosure of Invention

In the embodiment, a protection device for computer protection is provided to solve the problem that a chassis in the prior art lacks buffer protection.

According to one aspect of the application, a protection device for protecting a computer is provided, which comprises a shell and a buffer mechanism arranged in an inner cavity of the shell, wherein the top end of the outer wall of the shell is fixedly connected with the center of the bottom end of the outer wall of a cavity plate, and a plurality of wire holes are embedded in the front side of the shell;

buffer gear is including placing the board, place board top left and right sides fixed connection baffle bottom respectively, two the baffle center department has inlayed the heating panel respectively, two one side fixed connection cushion respectively that the baffle is close to each other, baffle bottom fixed connection roof outer wall bottom left and right sides, two one side top and bottom respectively fixed connection second spring one end that the baffle kept away from each other are a plurality of the one end difference fixed connection shells inner wall left and right sides that the baffle was kept away from to the second spring, cavity board outer wall top fixed connection movable plate bottom, place board outer wall bottom fixed connection movable plate respectively, one side difference sliding connection shells inner wall top and bottom that two bottom movable plates kept away from each other.

And furthermore, the inner cavities at the left side and the right side of the moving plate are respectively in sliding sleeve connection with one end of a telescopic plate, and the other ends, far away from each other, of the telescopic plates are respectively fixedly connected with the top end and the bottom end at the left side and the right side of the inner wall of the shell.

Furthermore, one end, close to the movable plate, of each of the four expansion plates is fixedly connected with one end of a first spring, the other end of each of the four first springs is fixedly connected with the left side and the right side of the inner wall of the movable plate, and the four first springs are sleeved in the inner cavity of the movable plate in a sliding mode.

Furthermore, four corners of the top end of the inner wall of the cavity plate are respectively and fixedly connected with the top ends of telescopic rods, four bottoms of the telescopic rods are respectively and fixedly connected with four corners of the top end of the U-shaped plate, and the bottom ends of the U-shaped plate are fixedly connected with the left side and the right side of the top end of the pressing plate.

Further, the screw thread of U template center department cup joints and runs through the stop screw bottom, the stop screw top is rotated and is connected and run through cavity board bottom center department, just the fixed cover in stop screw top connects the second bevel gear.

Furthermore, the second bevel gear is meshed with a third bevel gear, the third bevel gear is fixedly sleeved at one end of the outer wall of the rotating shaft, and the other end of the rotating shaft is rotatably connected with and penetrates through the center of the side wall of the front side of the cavity plate.

Further, the ventilation board has been inlayed respectively to the casing left and right sides, two one side top that the ventilation board kept away from each other is equipped with the cover plate respectively, two one side below that the ventilation board kept away from each other is equipped with down the cover plate respectively, two the magnetic path has been inlayed respectively to the cover plate bottom, two the magnetic path has been inlayed respectively to lower cover plate top, two go up the cover plate and connect down the cover plate through magnetic path magnetic force respectively.

And furthermore, the center of the top end of the upper cover plate is respectively in threaded sleeve joint and penetrates through the upper end of a threaded rod, the center of the bottom end of the lower cover plate is respectively in threaded sleeve joint and penetrates through the lower end of the threaded rod, the bottom ends of the threaded rods are respectively rotatably connected with the center of the top end of a fixed plate, and the two ends of one side, close to the fixed plate, of the fixed plate are respectively fixedly connected with the bottom ends of the left side and the right side of the outer wall of the shell.

Furthermore, two threaded rod top is fixed connection connecting axle bottom respectively, two the connecting axle top is rotated respectively and is connected and run through cavity board bottom left and right sides, two the connecting axle top is fixed the cup jointing first bevel gear respectively, two first bevel gear meshes the cooperation fourth bevel gear respectively, two fourth bevel gear is fixed the cup joint respectively in the driving shaft left and right sides, both ends are rotated respectively and are connected the cavity board inner wall left and right sides about the driving shaft, just driving shaft one end fixed connection carousel one side.

Furthermore, two the top of one side that the upper shield board is close to each other is fixed connection stopper respectively, two the stopper slides respectively and cup joints at spacing inslot chamber, two the spacing groove is vertical respectively and inlays in casing outer wall left and right sides top, two the top of one side that the lower shield board is close to each other is fixed connection stopper respectively, two the stopper slides respectively and cup joints at spacing inslot chamber, two the spacing groove is vertical respectively and inlays in casing outer wall left and right sides below.

Through the above-mentioned embodiment of this application, adopted buffer gear, solved the problem that quick-witted case lacks the buffering protection, improved the safety in utilization of quick-witted case.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall perspective view of an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall internal structure of an embodiment of the present application;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 2 according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a partial enlarged structure at B in fig. 2 according to an embodiment of the present application.

In the figure: 1. the movable plate comprises a shell, 2, a driving shaft, 3, a first spring, 4, a cavity plate, 5, a first bevel gear, 6, a telescopic plate, 7, a threaded rod, 8, a cushion, 9, a heat dissipation plate, 10, a baffle plate, 11, a second bevel gear, 12, a rotating shaft, 13, a placing plate, 14, a movable plate, 15, a third bevel gear, 16, a limiting screw, 17, a fixing plate, 18, a second spring, 19, a lower cover plate, 20, a magnetic block, 21, an upper cover plate, 22, a limiting block, 23, a limiting groove, 24, a connecting shaft, 25, a rotary disc, 26, a fourth bevel gear, 27, a top plate, 28, a wire hole, 29, a ventilating plate, 30, a pressing plate, 31, a U-shaped plate, 32 and a telescopic rod.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The buffering mechanism in this embodiment may be applied to various protection devices, for example, the following protection device is provided in this embodiment, and the buffering mechanism in this embodiment may be used to buffer and protect a computer case in the following protection device.

This protector includes the protecting box, hinge and movable cover, for the convenience of adjusting fixedly to the side of quick-witted case, can be in the front of protecting box through hinge swing joint movable cover, and place quick-witted case in the inside of protecting box, inboard fixed connection fixed spring at the protecting box, one end fixed connection fixed plate at fixed spring, the dead lever is cup jointed to the side screw thread at the protecting box, and the one end of dead lever contacts with the middle part of fixed plate opposite side, and be parallel to each other between dead lever and the fixed spring, when opening the movable cover, put the machine case in the inside of protecting box, rotate the dead lever again, make the fixed plate take place the motion under the drive of dead lever, and make the fixed plate be close to the side of machine case, thereby be convenient for adjust fixedly to the side of machine case. In order to strengthen the firmness of the side face fixation of the case, the antiskid pad can be fixedly connected to one side of the fixing plate, the antiskid pad is made of rubber materials, one side of the antiskid pad is in contact with the side face of the case, antiskid lines are arranged on the contact face of the antiskid pad and the case, when the fixing plate moves under the driving of the fixing rod, the fixing plate can drive the antiskid pad to move, one side of the antiskid pad is in contact with the side face of the case, the friction force between the antiskid pad and the case is increased, and the firmness of the side face fixation of the case is strengthened. In order to adjust and fix the top of the case conveniently, can be at the top fixed connection screw rod of protective housing inner chamber, cup joint the adjusting collar at the outside screw thread of screw rod, side fixed connection installation pole at the adjusting collar, and the inside internal thread of adjusting collar and the outside external screw thread looks adaptation of screw rod, and two installation poles of fixed connection respectively in the both sides of adjusting collar, bottom fixed connection fixed disk at the installation pole, when rotating the adjusting collar, make the adjusting collar take place to rotate to move down in the outside of screw rod, and drive the installation pole and take place to rotate to move down, make the fixed disk take place to rotate to move down under the drive of installation pole, make the fixed disk progressively be close to the top of case, thereby be convenient for adjust fixedly to the top of case. In order to enhance the firmness of the top fixation of the case, the rubber pad can be fixedly connected to the bottom of the fixed disc, the top of the rubber pad is fixedly bonded to the bottom of the fixed disc through the adhesive, the bottom of the rubber pad is in contact with the top of the case, when the fixed disc rotates and moves downwards, the rubber pad can be driven to rotate and move downwards, the elastic performance of the rubber pad is utilized, the bottom of the rubber pad is in close contact with the top of the case, and the firmness of the top fixation of the case is enhanced. In order to prevent dust for the case, the air holes can be formed in the side face of the protection case, the filter sleeve is arranged on the inner side of the protection case, the end portion of the filter sleeve is fixedly connected with the inner side of the protection case through bolts, the through holes are formed in one side of the filter sleeve, the activated carbon plate is fixedly connected with the inner portion of the filter sleeve and consists of activated carbon particles, the activated carbon plate is matched with the inner cavity of the filter sleeve, when the case is in operation, external air can enter the inside of the filter sleeve through the air holes, the air can pass through the activated carbon plate, the activated carbon plate can adsorb and filter dust in the air, the filtered air can enter the inside of the protection case through the through holes, the cleanness of the inside of the protection case is guaranteed, the dust-proof effect is achieved for the case, the problem that the dust is diffused to the inside of the case is avoided, and the heat dissipation effect of the case is improved.

Of course, the embodiment can also be used for buffering and protecting computer cases in protective devices with other structures. Here, description is not repeated, and the following describes the protection device according to the embodiment of the present application.

Referring to fig. 1-4, a protection device for protecting a computer includes a housing 1 and a buffer mechanism disposed in an inner cavity of the housing 1, wherein a top end of an outer wall of the housing 1 is fixedly connected to a center of a bottom end of an outer wall of a cavity plate 4, and a plurality of wire holes 28 are embedded in a front side of the housing 1;

buffer gear is including placing board 13, place board 13 top left and right sides fixed connection baffle 10 bottom respectively, two heating panel 9 has been inlayed respectively to baffle 10 center department, two one side fixed connection cushion 8 respectively that baffle 10 is close to each other, the baffle 10 bottom fixed connection roof 27 outer wall bottom left and right sides, two one side top and the bottom that baffle 10 kept away from each other are fixed connection second spring 18 one end respectively, and are a plurality of the one end that baffle 10 was kept away from to second spring 18 is the fixed connection casing 1 inner wall left and right sides respectively, 14 bottoms of cavity board 4 outer wall top fixed connection movable plate, place board 13 outer wall bottom fixed connection movable plate 14 respectively, one side that two bottom movable plates 14 kept away from each other is sliding connection casing 1 inner wall top and bottom respectively.

The inner cavities at the left side and the right side of the two movable plates 14 are respectively sleeved with one end of a telescopic plate 6 in a sliding manner, the mutually far ends of four telescopic plates 6 are respectively and fixedly connected with the top end and the bottom end at the left side and the right side of the inner wall of the shell 1, so that the movable plates 14 can slide left and right, one ends of four telescopic plates 6 close to the movable plates 14 are respectively and fixedly connected with one end of a first spring 3, the other ends of the four first springs 3 are respectively and fixedly connected with the left side and the right side of the inner wall of the movable plates 14, the four first springs 3 are respectively sleeved in the inner cavities of the movable plates 14 in a sliding manner, so that the stability of the left and the right sliding of the movable plates 14 is improved, the four corners at the top end of the inner wall of the cavity plate 4 are respectively and fixedly connected with the top end of a telescopic rod 32, the four bottoms of the four telescopic rods 32 are respectively and fixedly connected with the four corners at the top end of a U-shaped plate 31, the bottom end of the U-shaped plate 31 is fixedly connected with the left and the right sides at the top end of a pressing plate 30, so that the stability of the pressing plate 30 in the lifting process is improved, the U-shaped plate 31 is in threaded sleeve connection with the center of the U-shaped plate 31 and penetrates through the bottom end of a limiting screw 16, the top end of the limiting screw 16 is rotated, connected and penetrated through the center of the bottom end of a cavity plate 4, a second bevel gear 11 is fixedly sleeved on the top end of the limiting screw 16 and rotates to drive the U-shaped plate 31 to ascend and descend through the second bevel gear 11, the second bevel gear 11 is meshed with a third bevel gear 15, the third bevel gear 15 is fixedly sleeved on one end of the outer wall of a rotating shaft 12, the other end of the rotating shaft 12 is rotatably connected and penetrates through the center of the side wall of the front side of the cavity plate 4, so that the rotating shaft 12 is used for driving the second bevel gear 11 to rotate, ventilating plates 29 are respectively embedded on the left side and the right side of a shell 1, upper cover plates 21 are respectively arranged above one sides, far away from each other, lower cover plates 19 are respectively arranged below one side, far away from each other ventilating plates 29, and magnetic blocks 20 are respectively embedded at the bottom end of the upper cover plates 21, the top ends of the two lower cover plates 19 are respectively embedded with a magnetic block 20, the two upper cover plates 21 are respectively connected with the lower cover plate 19 through the magnetic force of the magnetic block 20, so that the magnetic connection between the upper cover plates 21 and the lower cover plates 19 is facilitated, the centers of the top ends of the two upper cover plates 21 are respectively in threaded sleeve connection and penetrate through the upper ends of the threaded rods 7, the centers of the bottom ends of the two lower cover plates 19 are respectively in threaded sleeve connection and penetrate through the lower ends of the threaded rods 7, the bottom ends of the two threaded rods 7 are respectively rotatably connected with the center of the top end of the fixed plate 17, the sides, close to each other, of the two fixed plates 17 are respectively and fixedly connected with the bottom ends of the left side and the right side of the outer wall of the shell 1, so that the distance between the upper cover plates 21 and the lower cover plates 19 can be conveniently adjusted through the rotation of the threaded rods 7, the top ends of the two threaded rods 7 are respectively and fixedly connected with the bottom ends of the connecting shafts 24, the top ends of the two connecting shafts 24 are respectively and rotatably connected with the left side and the right side of the bottom end of the cavity plate 4, and the first bevel gears 5 are respectively and fixedly connected with the top ends of the connecting shafts 24, the two first bevel gears 5 are respectively engaged with fourth bevel gears 26, the two fourth bevel gears 26 are respectively fixedly sleeved on the left side and the right side of the driving shaft 2, the left end and the right end of the driving shaft 2 are respectively rotatably connected with the left side and the right side of the inner wall of the

cavity plate

4, and 2 one end fixed connection carousel 25 one side of driving shaft is convenient for drive threaded rod 7 through rotating carousel 25 and rotate, two go up one side top that cover plate 21 is close to each other and be fixed connection stopper 22 respectively, two stopper 22 slides respectively and cup joints at spacing groove 23 inner chamber, two spacing groove 23 vertically inlays respectively in 1 outer wall left and right sides top of casing, two down one side top that cover plate 19 is close to each other respectively fixed connection stopper 22, two stopper 22 slides respectively and cup joints at spacing groove 23 inner chamber, two spacing groove 23 vertically inlays respectively in 1 outer wall left and right sides below of casing. The rotation of the upper and

lower cover plates

21 and 19 is restricted.

When the utility model is used, electrical components appearing in the application are externally connected with a power supply and a control switch when in use, a computer case is placed on a placing plate 13, a soft cushion 8 realizes the primary protection of the case, the rotating shaft 12 drives a third bevel gear 15 to rotate by rotating a rotating shaft 12, a second bevel gear 11 meshed and matched with the third bevel gear 15 rotates along with the third bevel gear, the second bevel gear 11 drives a limit screw 16 to rotate, a U-shaped plate 31 in threaded fit with the limit screw 16 drives a pressing plate 30 to descend under the limitation of an expansion link 32, so that the pressing plate 30 presses the top end of the case to realize the quick fixation of the case and simultaneously facilitate the taking of the case, when the case 1 is collided, the case slides along with the case 14 in the cavity of the case 1, when the moving plate 14 slides to the right, the left expansion plate 6 presses the left first spring 3, and simultaneously the right first spring 3 is stretched, the left side baffle plate 10 is matched to press the left side second spring 18, the right side second spring 18 is stretched, the movable plate 14 is pulled to slide leftwards through the mutual matching of the first spring 3 and the second spring 18, until the movable plate 14 drives the case to reset, the buffering protection of the case is realized at the moment, the collision damage of the case is avoided, the heat dissipation of the case is realized through the heat dissipation plate 9, the ventilation plate 29 is matched to dissipate and ventilate the inner cavity of the shell 1, when the case stops working, the rotary disc 25 drives the driving shaft 2 to rotate through rotating the rotary disc 25, the driving shaft 2 drives the fourth bevel gear 26 to rotate, the fourth bevel gear 26 drives the first bevel gear 5 to rotate, the first bevel gear 5 drives the connecting shaft 24 to rotate, the connecting shaft 24 drives the threaded rod 7 to rotate, the upper cover plate 21 in threaded fit with the threaded rod 7 slides downwards along the threaded rod 7 under the limitation of the limiting block 22 and the limiting groove 23, and the lower cover plate 19 in threaded fit with the threaded rod 7 under the limitation of the limiting block 22 and the limiting groove 23 along the threaded rod 7 towards the threaded rod 7 The upper cover plate 21 and the lower cover plate 19 are connected together through the magnetic blocks 20 in an adsorption mode through upward sliding, the upper cover plate 21 and the lower cover plate 19 are matched to shield the ventilating plate 29, dust is prevented from entering the shell 1 through the ventilating plate 29, and the difficulty in cleaning the inside of the shell 1 is increased.

The application has the advantages that:

1. the pressing plate is driven to descend by the U-shaped plate in threaded fit with the limit screw under the limitation of the telescopic rod, so that the pressing plate is pressed against the top end of the case, the case is quickly fixed, and the case is convenient to take;

2. the structure of the case is reasonable, when the case is collided, the case slides left and right in the inner cavity of the case along with the movable plate, when the movable plate slides right, the left side expansion plate presses the left side first spring, the right side first spring is stretched, the left side baffle is matched to press the left side second spring, the right side second spring is stretched, the movable plate is pulled to slide left through the mutual matching of the first spring and the second spring until the movable plate drives the case to reset, and at the moment, the buffer protection of the case is realized, and the case collision damage is avoided;

3. this application is through being equipped with the heating panel and dispels the heat to quick-witted case, the ventilation board of deuterogamying is to the heat dissipation of casing inner chamber, when quick-witted case stop work, through rotating the carousel, the carousel drives the driving shaft and rotates, the driving shaft drives fourth bevel gear and rotates, fourth bevel gear drives first bevel gear and rotates, first bevel gear drives the connecting axle and rotates, the connecting axle drives the threaded rod and rotates, go up the cover plate with threaded rod screw-thread fit and slide down along the threaded rod under the restriction of stopper and spacing groove, lower cover plate with threaded rod screw-thread fit slides up along the threaded rod under the restriction of stopper and spacing groove, it connects together to make last cover plate and lower cover plate pass through the magnetic path and adsorb, it shelters from to the ventilation board to realize going up cover plate and lower cover plate cooperation, it is inside to avoid the dust to get into the casing through the ventilation board, increase the inside clearance degree of difficulty of casing.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A protective device for computer protection, characterized by: the wire-inserting type wire-inserting device comprises a shell (1) and a buffer mechanism arranged in an inner cavity of the shell (1), wherein the top end of the outer wall of the shell (1) is fixedly connected with the center of the bottom end of the outer wall of a cavity plate (4), and a plurality of wire holes (28) are embedded in the front side of the shell (1);

the buffer mechanism comprises a placing plate (13), the left side and the right side of the top end of the placing plate (13) are respectively fixedly connected with the bottom ends of the baffles (10), the centers of the two baffles (10) are respectively embedded with a heat dissipation plate (9), one sides of the two baffles (10) which are close to each other are respectively fixedly connected with the soft cushion (8), the bottom ends of the baffle plates (10) are fixedly connected with the left side and the right side of the bottom end of the outer wall of the top plate (27), the top end and the bottom end of one side, away from each other, of the two baffle plates (10) are respectively and fixedly connected with one end of a second spring (18), one end, away from the baffle plates (10), of each second spring (18) is respectively and fixedly connected with the left side and the right side of the inner wall of the shell (1), the top end of the outer wall of the cavity plate (4) is fixedly connected with the bottom end of the movable plate (14), the bottom ends of the outer walls of the placing plates (13) are respectively fixedly connected with the moving plates (14), and one sides, far away from each other, of the two bottom moving plates (14) are respectively connected with the top end and the bottom end of the inner wall of the shell (1) in a sliding mode.

2. A guard for computer protection according to claim 1, characterised in that: two the movable plate (14) left and right sides inner chamber slides respectively and cup joints expansion plate (6) one end, four the one end that each other kept away from of expansion plate (6) is fixed connection casing (1) inner wall left and right sides top and bottom respectively.

3. A guard for computer protection according to claim 2, characterised in that: one end, close to the movable plate (14), of each of the four expansion plates (6) is fixedly connected with one end of each of the first springs (3), the other end of each of the four first springs (3) is fixedly connected with the left side and the right side of the inner wall of the movable plate (14), and the four first springs (3) are respectively sleeved in the inner cavity of the movable plate (14) in a sliding mode.

4. A guard for computer protection according to claim 1, characterised in that: the cavity plate (4) inner wall top four corners is fixed connection telescopic link (32) top respectively, four telescopic link (32) bottom is fixed connection U template (31) top four corners respectively, U template (31) bottom fixed connection clamp plate (30) top left and right sides.

5. A guard for computer protection according to claim 4, characterised in that: u template (31) center department screw thread cup joints and runs through limiting screw (16) bottom, limiting screw (16) top is rotated and is connected and run through cavity board (4) bottom center department, just the fixed cover in limiting screw (16) top connects second bevel gear (11).

6. A guard for computer protection according to claim 5, characterised in that: the second bevel gear (11) is in meshing fit with a third bevel gear (15), the third bevel gear (15) is fixedly sleeved at one end of the outer wall of the rotating shaft (12), and the other end of the rotating shaft (12) is rotatably connected with and penetrates through the center of the front side wall of the cavity plate (4).

7. A guard for computer protection according to claim 1, characterised in that: casing (1) left and right sides has inlayed ventilating board (29), two ventilating board (29) one side top of keeping away from each other is equipped with cover plate (21), two respectively ventilating board (29) one side below of keeping away from each other is equipped with down cover plate (19), two go up cover plate (21) bottom and inlay magnetic path (20), two respectively down cover plate (19) top has inlayed magnetic path (20), two go up cover plate (21) and connect lower cover plate (19) through magnetic path (20) magnetic force respectively.

8. A guard for computer protection according to claim 7, characterised in that: two go up cover plate (21) top center department respectively the screw thread cup joint and run through threaded rod (7) upper end, two cover plate (19) bottom center department respectively the screw thread cup joint and run through threaded rod (7) lower extreme, two threaded rod (7) bottom rotates respectively to connect fixed plate (17) top center department, two one side difference fixed connection casing (1) outer wall left and right sides bottom that fixed plate (17) are close to each other.

9. A guard for computer protection according to claim 8, characterised in that: two threaded rod (7) top is fixed connection connecting axle (24) bottom respectively, two connecting axle (24) top is rotated respectively and is connected and run through the cavity board (4) bottom left and right sides, two connecting axle (24) top is fixed respectively and cup joints first bevel gear (5), two first bevel gear (5) meshing cooperation fourth bevel gear (26) respectively, two fourth bevel gear (26) are fixed respectively and cup joint in driving shaft (2) left and right sides, both ends are rotated respectively about driving shaft (2) and are connected cavity board (4) inner wall left and right sides, just driving shaft (2) one end fixed connection carousel (25) one side.

10. A guard for computer protection according to claim 7, characterised in that: two go up one side top that cover plate (21) is close to each other and be fixed connection stopper (22), two stopper (22) slide respectively and cup joint at spacing groove (23) inner chamber, two spacing groove (23) are vertical respectively and inlay in casing (1) outer wall left and right sides top, two one side top that cover plate (19) is close to each other is fixed connection stopper (22), two respectively stopper (22) slide respectively and cup joint at spacing groove (23) inner chamber, two spacing groove (23) are vertical respectively and inlay in casing (1) outer wall left and right sides below.