Desktop microcomputer

Abstract

The invention relates to the technical field of electric digital data processing, and discloses a desktop microcomputer, which is characterized in that a push rod is slidably connected to one end, close to a shell groove, of a sliding frame, a sliding block is slidably connected to the interior of the shell groove, balls are rotatably nested on two sides of the sliding block, and a rotating shaft is rotatably connected to the upper end of the sliding block; a rotating column is rotationally connected to one side of the upper end of the rotating shaft, a connecting frame is rotationally connected to the upper end of the rotating column, a protruding block is arranged at the upper end of the rotating shaft, and large blades surround the outer side of the protruding block. The auxiliary backing ring can be further attached to a desktop through the steps, so that the overall stability of the shell is improved, the stability of the shell can be improved while the surface protection plate of the computer is impacted to form buffering, the situation that the computer is prone to displacement after being impacted is avoided, and the service life of the computer is prolonged. And auxiliary heat dissipation is formed through rotation of the small blades and the large blades.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical digital data processing, and discloses a desktop microcomputer. Background Art

[0002] Compared with traditional desktop computers, the desktop microcomputer has a greatly reduced volume. Usually, it is only one fraction or even smaller than the chassis of an ordinary desktop computer, and can be easily placed in a corner of the desktop or hung behind the monitor, saving a large amount of space. At the same time, it is equipped with a high-performance processor, memory and storage devices, as well as a large-capacity high-speed memory and a solid-state drive, providing technical inspiration for microcomputers; At present, a millimeter-scale ultra-microcomputer for trusted signatures with the publication number CN109308103B in the prior art discloses an ultra-microcomputer. The ultra-microcomputer includes a processor with a main frequency within 50 MHz, a non-volatile memory, a power supply and communication module composed of a photovoltaic unit, a photodetector and an LED unit, and an analog circuit module; the photodetector converts the received optical signal emitted by an external laser into an electrical signal, which is transmitted to the processor after being analyzed by the analog circuit module; after the processor executes the program stored in the non-volatile memory to implement the asymmetric encryption and hashing algorithms, the calculation result is transmitted to the analog circuit module, and after modulation processing, the generated continuous electrical signal is conducted to the LED unit, and the modulated optical signal is emitted to realize the external output of the calculation result. The microcomputer provided by this invention has a small volume and strong computing power. Applying the microcomputer provided by this valve can combine physical signatures with electronic signatures to achieve that the signature cannot be tampered with or damaged; Combined with the prior art, it is found that microcomputers are usually small in volume. When placed on the desktop, they are easily collided and damaged on the surface, and are prone to shift on the desktop, resulting in the microcomputer being unable to increase the overall stability by impact after the surface is impacted, and at the same time unable to use the impact force to assist the microcomputer to form auxiliary heat dissipation. Summary of the Invention

[0003] Aiming at the defects in the prior art, the present invention provides a desktop microcomputer.

[0004] In order to solve the above technical problems, the present invention proposes the following technical solutions: A desktop microcomputer includes a housing. A processor is provided inside the housing. An interface is installed on one side of the housing surface. Convex strips are slidably connected to both sides of the lower end of the housing, and a protective plate is provided on the side surface of the convex strip.

[0005] Furthermore, chutes are opened on both sides of the lower end inside the housing. The chutes are arranged horizontally. A hole is opened in the middle of the lower end inside the housing, and grooves are opened on both sides of the housing near the hole.

[0006] Furthermore, the interface is provided with multiple interfaces, which are USB interfaces and power interfaces. The data cable connects the processor to the display circuit through the interface, and the processor is connected to the power circuit by plugging the power cable into the interface.

[0007] Furthermore, a sliding frame is provided on the upper end of the convex strip near the housing slide groove, the sliding frame passes through the interior of the housing slide groove and extends to the upper end of the slide groove, and the sliding frame slides horizontally inside the housing slide groove.

[0008] Furthermore, the convex strip is matched with a protective plate, the protective plate is in an "L" shape, and the protective plate extends to both sides of the shell.

[0009] Furthermore, the sliding frame is slidably connected to a push rod at one end close to the shell groove, and a slider is slidably connected to the inside of the shell groove. Balls are rotatably nested on both sides of the slider. The upper end of the slider is rotatably connected to a rotating shaft, one side of the upper end of the rotating shaft is rotatably connected to a rotating column, the upper end of the rotating column is rotatably connected to a connecting frame, and a protrusion is provided at the upper end of the rotating shaft, and a large blade surrounds the outer side of the protrusion.

[0010] Furthermore, the side surface of the connecting frame is in an "L" shape, the upper end of one side of the connecting frame is connected to the lower side of the push rod away from the end of the sliding frame, and the rotating column is matched with the connecting frame.

[0011] Furthermore, when the sliding frame slides horizontally, the sliding frame is pushed to one end of the connecting frame by the push rod, and a bearing is provided under the connecting frame to facilitate the connecting frame to drive the rotating shaft to rotate horizontally through the rotating column.

[0012] Furthermore, the protrusions are distributed on both sides above the shell hole, the large blades are matched with the protrusions, and the large blades are distributed on both sides inside the shell. When the shaft rotates, the shaft drives the large blades to rotate synchronously through the protrusions.

[0013] Furthermore, a card slot is provided on the outer side of the rotating shaft, the card slot is 1-2 cm long, and the card slot is arranged in a vertical direction.

[0014] Furthermore, a spring is elastically connected inside the slot of the rotating shaft, a small blade is elastically connected to the inner side of the spring, an inner cylinder slides through the hole of the shell, a bent rod is surrounded by the lower end of the inner cylinder, and a pad is slidably nested and docked at the end of the bent rod away from the inner cylinder, and a gasket is provided on the outside of the pad.

[0015] Furthermore, the spring is matched with the small blade. When the shaft rotates, the small blade rotates synchronously. At the same time, the small blade slides elastically in a vertical direction through the spring. The end of the small blade away from the spring is elastically squeezed in a vertical direction against the inner cylinder.

[0016] Furthermore, when the inner cylinder does not slide downward, the upper end of the inner cylinder extends to above the hole of the shell.

[0017] Furthermore, the bent rod is arc-shaped, with an arc angle of 50 - 90°. The bent rod surrounds the outside of the upper end of the cushion ring, and the lower end of the bent rod is vertically and closely pressed against the upper side of the cushion ring.

[0018] Furthermore, the cushion ring is semi-circular. Both the cushion ring and the bent rod are located below the housing. The lower end of the cushion ring is horizontally and closely attached to the desktop. The cushion blocks are distributed on the outside of the upper end of the cushion ring. The cushion ring is made of a deformable material, such as rubber.

[0019] Furthermore, the cushion block penetrates through the inside of the cushion ring, and a track is provided at the upper end of the cushion block. One end of the bent rod is slidably nested inside the track.

[0020] From the above technical solutions, the beneficial effects of the present invention are as follows: When the outside of the protection plate of the present invention is impacted, the convex strip on the side of the lower end of the protection plate slides horizontally due to the impact. Since the sliding frame at the upper end of the convex strip is clamped inside the chute of the housing, the convex strip and the sliding frame slide horizontally. When the sliding frame slides towards the side away from the hole of the housing, since the slider is at one end of the housing groove away from the hole inside the housing, the inner wall of the housing groove forms a tight fit against one end of the slider. The sliding frame drives the connecting frame to rotate synchronously through the push rod, and the connecting frame drives the rotating shaft to rotate horizontally through the rotating column. The slider is in a static state, and the rotating shaft drives the large blade to rotate synchronously through the convex block; When the sliding frame of the present invention slides towards the side close to the hole of the housing, the sliding frame drives the rotating shaft to rotate synchronously through the push rod, the connecting frame and the rotating column. Through the thrust of the push rod on the upper ends of the rotating shaft and the slider, and spherical balls are sleeved on both sides of the slider, the friction between the slider and the inner wall of the housing groove is reduced through the spherical balls, enabling the slider to slide inside the housing groove towards the side close to the hole of the housing. Through the above steps, when the surface of the protection plate is impacted, through the sliding buffer of the sliding frame and the convex strip, protection is formed. While avoiding the impact on the surface of the housing, it is possible to drive the rotating shaft to rotate horizontally through the sliding of the sliding frame and through the push rod, the connecting frame, and the rotating column, thereby assisting the rotation of the large blade and the small blade, so as to be able to form rotational heat dissipation inside the computer when the computer surface is impacted; When the housing of the present invention is placed on the desktop, the cushion ring is simultaneously closely attached to the desktop. At this time, the upper end of the cushion ring lifts the inner cylinder upward through the bent rod, so that the upper end of the inner cylinder extends above the hole of the housing; When the rotating shaft rotates horizontally, the small blades rotate synchronously. At the same time, the small blades elastically slide vertically through the springs. When the small blades on the outer side of the rotating shaft rotate to one side of the inner cylinder, the end of the small blade away from the spring elastically squeezes the inner cylinder vertically. The inner cylinder forms a downward extrusion on one end of the bent rod, and the bent rod bends downward and squeezes. Since the bent rod surrounds the outer side of the upper end of the cushion ring, the lower end of the bent rod fits and squeezes the upper side of the cushion ring vertically. The end of the bent rod away from the inner cylinder slides inside the cushion block, which facilitates the bent rod to further squeeze the upper end of the cushion ring downward. As a result, the contact area between the lower end of the cushion ring and the tabletop can be increased. When the surface of the protective plate is impacted, through the rotation of the rotating shaft and the continuous vertical extrusion of the small blades, the above steps can assist the cushion ring to further fit the tabletop, thereby increasing the overall stability of the housing. Thus, when the surface protective plate of this computer is impacted to form a buffer, the stability of the housing can be increased, avoiding the situation that the computer is easily displaced after being impacted, and forming auxiliary heat dissipation through the rotation of the small blades and the large blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0022] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a front schematic diagram of the housing and the processor in the present invention; Figure 3 It is a schematic diagram of the overall back structure of the present invention; Figure 4 It is a back schematic diagram of the housing and the processor in the present invention; Figure 5 It is an exploded schematic diagram of the inside of the housing in the present invention; Figure 6 It is an exploded schematic diagram of the push rod assembly in the present invention; Figure 7 It is a docking schematic diagram of the small blade and the inner cylinder in the present invention; Figure 8 It is a schematic diagram of the small blade assembly in the present invention; Figure 9 It is an exploded schematic diagram of the small blade in the present invention; Figure 10 It is a schematic diagram of the inner cylinder assembly in the present invention; Figure 11 It is a bottom view schematic diagram of the inner cylinder assembly in the present invention.

[0023] Reference numerals: 1 - housing, 101 - processor, 102 - interface, 103 - rib, 104 - protective plate, 2 - sliding frame, 201 - push rod, 202 - connecting frame, 203 - rotating column, 3 - rotating shaft, 301 - slider, 302 - spherical ball, 303 - bump, 304 - large blade, 4 - spring, 401 - small blade, 5 - inner cylinder, 501 - bent rod, 502 - gasket ring, 503 - cushion block. Detailed implementation manner

[0024] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0025] Refer to Figures 1-11 , a desktop microcomputer, including a housing 1, inside which there is a processor 101, on one side of the surface of the housing 1 there is an interface 102 installed, on both sides of the lower end of the housing 1 there are slidingly connected ribs 103, and on the side of the rib 103 there is a protective plate 104; On both sides of the lower end inside the housing 1, there are chutes opened, the chutes are arranged horizontally, in the middle of the lower end inside the housing 1 there is a hole opened, and on both sides of the housing 1 near the hole there are grooves, which can be referred to in the attached Figure 5 as shown; There are multiple interfaces 102, the interfaces 102 are USB interfaces and power interfaces, the data cable connects the processor 101 and the display circuit through the interface 102, and the processor 101 is connected to the power circuit by plugging the power cord into the interface 102; Near the upper end of the rib 103 close to the chute of the housing 1, there is a sliding frame 2, the sliding frame 2 penetrates inside the chute of the housing 1 and extends to the upper end of the chute, and the sliding frame 2 slides horizontally inside the chute of the housing 1; The rib 103 and the protective plate 104 are provided in a matching manner, the protective plate 104 is in an "L" shape, and the protective plate 104 extends to both sides of the housing 1; Among them: the housing 1 is placed on the desktop through the rib 103, the protective plate 104 extends to both sides of the housing 1, which can form protection for both sides of the housing 1, the data cable connects the processor 101 and the display circuit through the interface 102, and the processor 101 is connected to the power circuit by plugging the power cord into the interface 102. When the side of the housing 1 is collided, it first hits the side of the protective plate 104, the protective plate 104 is squeezed to one side of the rib 103, the rib 103 slides through the sliding frame 2 and the lower end of the chute of the housing 1, and the lower end of the sliding frame 2 slides inside the chute of the housing 1, and the rib 103 and the sliding frame 2 slide horizontally; Refer to Figures 4-9, in this embodiment, a push rod 201 is slidably connected to one end of the sliding frame 2 close to the groove of the housing 1. A slider 301 is slidably connected inside the groove of the housing 1. Spherical balls 302 are rotatably nested on both sides of the slider 301. A rotating shaft 3 is rotatably connected to the upper end of the slider 301. One side of the upper end of the rotating shaft 3 is rotatably connected to a rotating column 203. The upper end of the rotating column 203 is rotatably connected to a connecting frame 202. A convex block 303 is provided at the upper end of the rotating shaft 3. A large blade 304 is wound around the outer side of the convex block 303; The side of the connecting frame 202 is in an "L" shape. The upper end of one side of the connecting frame 202 is connected to the lower part of the end of the push rod 201 away from the sliding frame 2. The rotating column 203 is arranged in a matching manner with the connecting frame 202; When the sliding frame 2 slides horizontally, the sliding frame 2 is pushed to one end of the connecting frame 202 through the push rod 201. And a bearing is provided below the connecting frame 202, which facilitates the connecting frame 202 to drive the rotating shaft 3 to rotate horizontally through the rotating column 203. Reference can be made to the attached Figure 6 and 7 shown; When the slider 301 does not slide, the slider 301 is at one end of the groove of the housing 1 away from the hole inside the housing 1. One end of the spherical ball 302 rotates and rubs against the inner wall of the groove of the housing 1 in the horizontal direction. When the slider 301 slides horizontally, the spherical ball 302 rotates 360°; One end of the spherical ball 302 rotates and rubs against the inner wall of the groove of the housing 1 in the horizontal direction. By rotating the spherical balls 302 on both sides of the slider 301, the friction between the slider 301 and the inner wall of the groove of the housing 1 can be reduced through the spherical balls 302. Furthermore, through the spherical balls 302, it is possible to assist the slider 301 to slide horizontally under the drive of the push rod 201, the connecting frame 202 and the rotating shaft 3; When the slider 301 does not slide, the slider 301 is at one end of the groove of the housing 1 away from the hole inside the housing 1. Therefore, when the sliding frame 2 drives the slider 301 to slide towards the end away from the hole of the housing 1 through the push rod 201 and the rotating shaft 3, the slider 301 is in a static state. At this time, the push rod 201 can drive the rotating shaft 3 to rotate horizontally through the connecting frame 202 and the rotating column 203; The convex blocks 303 are distributed on both sides above the hole of the housing 1. The large blades 304 are arranged in a matching manner with the convex blocks 303. The large blades 304 are distributed on both sides inside the housing 1. When the rotating shaft 3 rotates, the rotating shaft 3 drives the large blades 304 to rotate synchronously through the convex blocks 303; A card slot is opened on the outer side of the rotating shaft 3. The length of the card slot is 1-2 cm, and the card slots are arranged vertically; Wherein: when the outer side of the protection plate 104 is impacted, the convex strip 103 on the lower side surface of the protection plate 104 slides horizontally due to the impact. Since the sliding frame 2 at the upper end of the convex strip 103 is clamped inside the chute of the housing 1, the convex strip 103 and the sliding frame 2 slide horizontally. When the sliding frame 2 slides toward the side away from the hole of the housing 1, since the slider 301 is at one end of the groove of the housing 1 away from the inner hole of the housing 1, the inner wall of the groove of the housing 1 forms a tight fit against one end of the slider 301. The sliding frame 2 drives the connecting frame 202 to rotate synchronously through the push rod 201, and the connecting frame 202 drives the rotating shaft 3 to rotate horizontally through the rotating column 203. The slider 301 is in a static state, and the rotating shaft 3 drives the large blade 304 to rotate synchronously through the convex block 303; When the sliding frame 2 slides toward the side close to the hole of the housing 1, the sliding frame 2 drives the rotating shaft 3 to rotate synchronously through the push rod 201, the connecting frame 202 and the rotating column 203. Through the thrust of the push rod 201 on the upper ends of the rotating shaft 3 and the slider 301, and spherical balls 302 are sleeved on both sides of the slider 301, the friction between the slider 301 and the inner wall of the groove of the housing 1 is reduced through the spherical balls 302, so that the slider 301 can slide inside the groove of the housing 1 toward the side close to the hole of the housing 1. Through the above steps, when the surface of the protection plate 104 is impacted, through the sliding buffer of the sliding frame 2 and the convex strip 103, protection is formed. While avoiding the surface of the housing 1 from being impacted, it can drive the rotating shaft 3 to rotate horizontally through the sliding of the sliding frame 2, and through the push rod 201, the connecting frame 202 and the rotating column 203, thereby assisting the rotation of the large blade 304 and the small blade 401, so that rotational heat dissipation can be formed inside the computer when the surface of the computer is impacted; Refer to Figures 5-11 In this embodiment, a spring 4 is elastically connected inside the card slot of the rotating shaft 3, a small blade 401 is elastically connected to the inner side of the spring 4, an inner cylinder 5 slides through the hole of the housing 1, a bent rod 501 is wound around the lower end of the inner cylinder 5, one end of the bent rod 501 away from the inner cylinder 5 is slidably nested and butted with a cushion block 503, and a cushion ring 502 is arranged on the outer side of the cushion block 503; The spring 4 is arranged in a matching manner with the small blade 401. When the rotating shaft 3 rotates, the small blade 401 rotates synchronously. At the same time, the small blade 401 elastically slides in the vertical direction through the spring 4. One end of the small blade 401 away from the spring 4 elastically presses against the inner cylinder 5 in the vertical direction. It can be referred to the attached Figure 7 shown; When the inner cylinder 5 does not slide downward, the upper end of the inner cylinder 5 extends above the hole of the housing 1; The bent rod 501 is arranged in an arc shape, and the arc angle is 50 - 90°. The bent rod 501 is wound around the outer side of the upper end of the cushion ring 502, and the lower end of the bent rod 501 is vertically and closely pressed against the upper side of the cushion ring 502; The spacer ring 502 is arranged in a semi-circular ring shape. Both the spacer ring 502 and the bent rod 501 are located below the housing 1. The lower end of the spacer ring 502 is horizontally fitted to the desktop. The spacer blocks 503 are distributed on the outer side of the upper end of the spacer ring 502. The spacer ring 502 is made of a deformable material, such as rubber material; The spacer block 503 penetrates through the interior of the spacer ring 502. A track is provided at the upper end of the spacer block 503. One end of the bent rod 501 is slidably nested inside the track. Reference can be made to the attached Figure 10 illustrations; Among them: When the housing 1 is placed on the desktop, the spacer ring 502 is synchronously fitted to the desktop. At this time, the upper end of the spacer ring 502 lifts the inner cylinder 5 upward through the bent rod 501, so that the upper end of the inner cylinder 5 extends above the hole of the housing 1; When the rotating shaft 3 rotates horizontally, the small blades 401 rotate synchronously. At the same time, the small blades 401 elastically slide vertically through the springs 4. When the small blades 401 on the outer side of the rotating shaft 3 rotate to one side of the inner cylinder 5, the end of the small blade 401 away from the spring 4 elastically squeezes the inner cylinder 5 vertically. The inner cylinder 5 exerts a downward extrusion on one end of the bent rod 501, and the bent rod 501 bends downward and squeezes. Since the bent rod 501 surrounds the outer side of the upper end of the spacer ring 502, the lower end of the bent rod 501 is vertically fitted and squeezed against the upper side of the spacer ring 502. The end of the bent rod 501 away from the inner cylinder 5 slides inside the spacer block 503, which facilitates the bent rod 501 to further extrude the upper end of the spacer ring 502 downward. Furthermore, the contact area between the lower end of the spacer ring 502 and the desktop can be increased. When the surface of the protective plate 104 is impacted, through the rotation of the rotating shaft 3 and the continuous vertical extrusion of the small blades 401, the above steps can assist the spacer ring 502 to further fit the desktop, thereby increasing the overall stability of the housing 1. As a result, when the surface protective plate 104 of this computer is impacted to form a buffer, the stability of the housing 1 can be increased, avoiding the situation that the computer is easily displaced after being impacted, and forming auxiliary heat dissipation through the rotation of the small blades 401 and the large blades 304.

[0026] It should be noted that in this text, the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "fixedly installed", "installed", "connected", "joined" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A desktop microcomputer, comprising a housing (1), characterized in that: Inside the housing (1), there is a processor (101). On one side of the surface of the housing (1), there is an interface (102). On both sides of the lower end of the housing (1), there are slidingly connected rib strips (103), and on the side of the rib strips (103), there is a protective plate (104). On both sides of the lower end inside the housing (1), there are sliding grooves arranged horizontally. In the middle of the lower end inside the housing (1), there is a hole. On both sides of the housing (1) near the hole, there are grooves. At the upper end of the rib strip (103) close to the sliding groove of the housing (1), there is a sliding frame (2). The sliding frame (2) passes through the inside of the sliding groove of the housing (1) and extends to the upper end of the sliding groove. The sliding frame (2) slides horizontally inside the sliding groove of the housing (1).

2. A desktop microcomputer according to claim 1, characterized in that, The rib strip (103) is provided in a matching manner with the protective plate (104). The protective plate (104) is in an "L" shape and extends to both sides of the housing (1).

3. A desktop microcomputer according to claim 1, characterized in that, One end of the sliding frame (2) close to the groove of the housing (1) is slidingly connected with a push rod (201). Inside the groove of the housing (1), there is a sliding block (301). On both sides of the sliding block (301), there are rotatably nested balls (302). At the upper end of the sliding block (301), there is a rotating shaft (3). On one side of the upper end of the rotating shaft (3), there is a rotating column (203). At the upper end of the rotating column (203), there is a connecting frame (202). At the upper end of the rotating shaft (3), there is a convex block (303), and around the outside of the convex block (303), there is a large blade (304).

4. A desktop microcomputer according to claim 3, characterized in that, The side of the connecting frame (202) is in an "L" shape. The upper end of one side of the connecting frame (202) is connected to the lower side of the end of the push rod (201) away from the sliding frame (2). The rotating column (203) is provided in a matching manner with the connecting frame (202).

5. A desktop microcomputer according to claim 3, characterized in that, When the sliding block (301) does not slide, the sliding block (301) is at one end of the groove of the housing (1) away from the hole inside the housing (1). One end of the ball (302) rotates and rubs horizontally with the inner wall of the groove of the housing (1). When the sliding block (301) slides horizontally, the ball (302) rotates 360°.

6. A desktop microcomputer according to claim 3, wherein The convex blocks (303) are distributed on both sides above the hole of the housing (1). The large blades (304) are provided in a matching manner with the convex blocks (303), and the large blades (304) are distributed on both sides inside the housing (1).

7. A desktop microcomputer according to claim 3, characterized in that, On the outside of the rotating shaft (3), there is a card slot with a length of 1 - 2 cm.

8. A desktop microcomputer according to any one of claims 3 or 7, characterized in that Inside the card slot of the rotating shaft (3), there is an elastically connected spring (4). Inside the spring (4), there is an elastically connected small blade (401). Inside the hole of the housing (1), an inner cylinder (5) slides through. Around the lower end of the inner cylinder (5), there is a bent rod (501). The end of the bent rod (501) away from the inner cylinder (5) is slidingly nested and butted with a cushion block (503), and on the outside of the cushion block (503), there is a cushion ring (502).

9. The desktop microcomputer according to claim 8, wherein, The spring (4) is provided in a matching manner with the small blade (401). When the rotating shaft (3) rotates, the small blade (401) rotates synchronously. At the same time, the small blade (401) elastically slides vertically through the spring (4). The end of the small blade (401) away from the spring (4) elastically squeezes the inner cylinder (5) vertically.

10. A desktop microcomputer according to claim 8, characterized in that, When the inner cylinder (5) does not slide downwards, the upper end of the inner cylinder (5) extends above the hole of the housing (1). The bent rod (501) is arranged in an arc shape, and the arc angle is 50 - 90°. The bent rod (501) surrounds the outer side of the upper end of the gasket ring (502), and the lower end of the bent rod (501) is in vertical contact and extrusion with the upper side of the gasket ring (502). The gasket ring (502) is arranged in a semi-circular ring shape. The gasket ring (502) and the bent rod (501) are both below the housing (1). The lower end of the gasket ring (502) is in horizontal contact with the tabletop, and the cushion blocks (503) are distributed on the outer side of the upper end of the gasket ring (502).

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