A desktop microcomputer

Abstract

This invention relates to the technical field of electronic digital data processing and discloses a desktop microcomputer. A push rod is slidably connected to one end of a sliding frame near a recess in the housing. A slider is slidably connected inside the recess, and spheres are rotatably nested on both sides of the slider. A rotating shaft is rotatably connected to the upper end of the slider, and a rotating column is rotatably connected to one side of the upper end of the rotating shaft. A connecting frame is rotatably connected to the upper end of the rotating column. A protrusion is provided at the upper end of the rotating shaft, and large blades surround the outer side of the protrusion. When the protective plate surface is impacted, the rotation of the rotating shaft and the continuous vertical compression of the small blades further enhance the fit between the auxiliary pad ring and the desktop, thereby increasing the overall stability of the housing. This allows the computer to buffer impacts to the surface protective plate while increasing housing stability, preventing the computer from easily shifting after an impact. The rotation of the small and large blades also provides auxiliary heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of electronic digital data processing, and discloses a desktop microcomputer. Background Technology

[0002] Desktop microcomputers are significantly smaller than traditional desktop computers, typically only a fraction of the size of a regular desktop computer case or even smaller. They can be easily placed in a corner of a desktop or mounted behind a monitor, saving a lot of space. At the same time, they are equipped with high-performance processors, memory and storage devices, as well as large-capacity high-speed memory and solid-state drives, providing technological inspiration for microcomputers.

[0003] Currently, the prior art discloses a millimeter-scale ultra-microcomputer for trusted signatures, with publication number CN109308103B. This ultra-microcomputer includes a processor with a clock frequency of less than 50MHz, non-volatile memory, a power supply and communication module composed of photovoltaic units, photodetectors, and LED units, and an analog circuit module. The photodetector converts the received light signal emitted by an external laser into an electrical signal, which is then analyzed by the analog circuit module and transmitted to the processor. The processor executes the program stored in the non-volatile memory that implements asymmetric encryption and hashing algorithms, and transmits the calculation result to the analog circuit module. After modulation processing, the generated continuous electrical signal is transmitted to the LED unit, modulated, and then emitted as a light signal, realizing the output of the calculation result. The microcomputer provided by this invention is small in size and has strong computing power. Applying this microcomputer allows for the combination of physical and electronic signatures, achieving signatures that cannot be tampered with or destroyed.

[0004] Based on existing technology, it has been found that microcomputers are usually small in size and are easily damaged by collisions when placed on a desktop. They are also prone to displacement of the desktop. As a result, microcomputers cannot use impact to increase overall stability after being hit on the surface, nor can they use impact force to assist in heat dissipation. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a desktop microcomputer.

[0006] To solve the above-mentioned technical problems, the present invention proposes the following technical solution:

[0007] A desktop microcomputer includes a housing with a processor inside. An interface is installed on one side of the housing surface, and slats are slidably connected to both sides of the lower end of the housing. Protective plates are provided on the sides of the slats.

[0008] Furthermore, the lower end of the housing has sliding grooves on both sides, which are arranged horizontally, and the lower end of the housing has a hole in the middle, and the housing has grooves on both sides near the hole.

[0009] Furthermore, the interface is provided in multiple ways, including a USB interface and a power interface. The data cable connects the processor to the display circuit through the interface, and the processor connects to the power circuit by plugging the power cable into the interface.

[0010] Furthermore, a sliding frame is provided near the upper end of the groove of the housing, the sliding frame penetrates the inside of the groove of the housing and extends to the upper end of the groove, and the sliding frame slides horizontally inside the groove of the housing.

[0011] Furthermore, the protruding strip is matched with the protective plate, which is L-shaped and extends to both sides of the shell.

[0012] Furthermore, a push rod is slidably connected to one end of the sliding frame near the groove of the housing, a slider is slidably connected inside the groove of the housing, spheres are rotatably nested on both sides of the slider, a rotating shaft is rotatably connected to the upper end of the slider, a rotating column is rotatably connected to one side of the upper end of the rotating shaft, a connecting frame is rotatably connected to the upper end of the rotating column, a protrusion is provided at the upper end of the rotating shaft, and large blades are surrounded on the outside of the protrusion.

[0013] Furthermore, the side of the connecting frame is L-shaped, and the upper end of one side of the connecting frame is connected to the lower end of the push rod away from the sliding frame. The rotating column is matched with the connecting frame.

[0014] Furthermore, when the sliding frame slides horizontally, the sliding frame is pushed to one end of the connecting frame by a push rod, and a bearing is provided below the connecting frame to facilitate the connecting frame to drive the rotating shaft to rotate horizontally by a rotating column.

[0015] Furthermore, the protrusions are distributed on both sides above the holes in the housing, and the large blades are matched with the protrusions. The large blades are distributed on both sides inside the housing. When the shaft rotates, the shaft drives the large blades to rotate synchronously through the protrusions.

[0016] Furthermore, a slot is provided on the outer side of the rotating shaft, the slot length is 1-2cm, and the slots are arranged in a vertical direction.

[0017] Furthermore, a spring is elastically connected inside the slot of the rotating shaft, and a small blade is elastically connected inside the spring. An inner cylinder slides through the hole in the housing, and a bent rod is wrapped around the lower end of the inner cylinder. A pad is slidably nested and connected to the end of the bent rod away from the inner cylinder, and a gasket ring is provided on the outer side of the pad.

[0018] 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 the vertical direction through the spring, and the end of the small blade away from the spring is elastically squeezed in the vertical direction with the inner cylinder.

[0019] Furthermore, when the inner cylinder does not slide downwards, the upper end of the inner cylinder extends above the housing hole.

[0020] Furthermore, the bent rod is arc-shaped with an arc angle of 50-90°. The bent rod wraps around the outer side of the upper end of the washer, and the lower end of the bent rod is perpendicularly pressed against the upper part of the washer.

[0021] Furthermore, the washer is arranged in a semi-circular shape, and both the washer and the bent rod are located below the housing. The lower end of the washer is horizontally attached to the tabletop, and the pads are distributed on the outer side of the upper end of the washer. The washer is made of a deformable material, such as rubber.

[0022] Furthermore, the pad block penetrates the interior of the pad ring, and a track is provided at the upper end of the pad block, with one end of the bent rod slidingly nested inside the track.

[0023] As can be seen from the above technical solution, the beneficial effects of the present invention are as follows:

[0024] When the outer side of the protective plate is impacted, the protrusion on the lower side of the protective plate slides horizontally due to the impact. Since the sliding frame at the upper end of the protrusion is engaged in the sliding groove of the housing, the protrusion and the sliding frame slide horizontally. When the sliding frame slides away from the hole in the housing, the slider is located at the end of the housing groove away from the hole in the housing. The inner wall of the housing groove abuts against the end of the slider. The sliding frame drives the connecting frame to rotate synchronously through the push rod. The connecting frame drives the rotating shaft to rotate horizontally through the rotating column. The slider is stationary. The rotating shaft drives the large blade to rotate synchronously through the protrusion.

[0025] When the sliding frame of this invention slides towards the side closer to the housing hole, the sliding frame synchronously drives the rotating shaft to rotate through the push rod, connecting frame, and rotating column. The push rod exerts a pushing force on the rotating shaft and the upper end of the slider, and the two sides of the slider are fitted with spheres. The spheres reduce the friction between the slider and the inner wall of the housing groove, allowing the slider to slide towards the side closer to the housing hole inside the housing groove. Through the above steps, when the protective plate surface is impacted, the sliding frame and the convex strip provide buffering and protection, preventing the housing surface from being impacted. At the same time, the sliding frame can drive the rotating shaft to rotate horizontally through the push rod, connecting frame, and rotating column, thereby assisting the rotation of the large and small blades. This enables rotational heat dissipation of the computer's internal components when the computer surface is impacted.

[0026] When the housing of this invention is placed on a table, the pad ring is simultaneously attached to the table. At this time, the upper end of the pad ring lifts the inner cylinder upward through the bent rod, so that the upper end of the inner cylinder extends above the housing hole.

[0027] When the shaft rotates horizontally, the small blades rotate synchronously. Simultaneously, the small blades slide elastically vertically via springs. When the small blades on the outer side of the shaft rotate to one side of the inner cylinder, the end of the small blade away from the spring elastically presses against the inner cylinder vertically. The inner cylinder then presses downwards against one end of the bent rod, causing the bent rod to bend downwards. Since the bent rod wraps around the outer side of the upper end of the pad ring, the lower end of the bent rod presses against the upper part of the pad ring vertically. The end of the bent rod away from the inner cylinder slides inside the pad, facilitating further downward pressure on the upper end of the pad ring. This increases the contact area between the lower end of the pad ring and the desktop. When the protective plate surface is impacted, the rotation of the shaft and the continuous vertical pressure from the small blades help the pad ring to further adhere to the desktop, increasing the overall stability of the casing. This allows the computer to buffer impacts on the surface protective plate while increasing casing stability, preventing the computer from easily shifting after an impact. The rotation of the small and large blades also assists in heat dissipation. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. 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 scale.

[0029] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0030] Figure 2 This is a front view of the casing and processor in this invention;

[0031] Figure 3 This is a schematic diagram of the overall back structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the back of the casing and the processor in this invention;

[0033] Figure 5 This is a schematic diagram of an explosion inside the casing in this invention;

[0034] Figure 6 This is an exploded view of the push rod assembly in this invention;

[0035] Figure 7 This is a schematic diagram of the connection between the small blade and the inner cylinder in this invention;

[0036] Figure 8 This is a schematic diagram of the small blade assembly in this invention;

[0037] Figure 9 This is a schematic diagram of the small blade explosion in this invention;

[0038] Figure 10 This is a schematic diagram of the inner cylinder assembly in this invention;

[0039] Figure 11 This is a bottom view of the inner cylinder assembly in this invention.

[0040] Figure label:

[0041] 1-Housing, 101-Processor, 102-Interface, 103-Protrusion, 104-Protective plate, 2-Sliding frame, 201-Push rod, 202-Connecting frame, 203-Rotating column, 3-Rotating shaft, 301-Slider, 302-Spherical ball, 303-Protrusion, 304-Large blade, 4-Spring, 401-Small blade, 5-Inner cylinder, 501-Bent rod, 502-Washer ring, 503-Push block. Detailed Implementation

[0042] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0043] Reference Figure 1-11 A desktop microcomputer includes a housing 1, inside which a processor 101 is provided, an interface 102 is installed on one side of the surface of the housing 1, and protrusions 103 are slidably connected to both sides of the lower end of the housing 1, with protective plates 104 provided on the sides of the protrusions 103.

[0044] The lower interior of housing 1 has horizontally arranged sliding grooves on both sides. A hole is located in the center of the lower interior of housing 1, and grooves are formed on both sides of the interior of housing 1 near the hole. (See attached instruction manual for details.) Figure 5 As shown;

[0045] The interface 102 is provided with multiple interfaces, including a USB interface and a power interface. The data cable connects the processor 101 to the display circuit through the interface 102, and the processor 101 connects to the power circuit by plugging the power cable into the interface 102.

[0046] The protrusion 103 is provided with a sliding frame 2 near the upper end of the slide groove of the housing 1. The sliding frame 2 passes through the inside of the slide groove of the housing 1 and extends to the upper end of the slide groove. The sliding frame 2 slides horizontally inside the slide groove of the housing 1.

[0047] The protruding strip 103 is matched with the protective plate 104. The protective plate 104 is L-shaped and extends to both sides of the housing 1.

[0048] Wherein: the housing 1 is placed on the desktop via the protrusion 103, the protective plate 104 extends to both sides of the housing 1, which can protect the sides of the housing 1, the data cable connects the processor 101 to the display circuit via the interface 102, and the processor 101 is connected to the power circuit via the power cable plugged into the interface 102. When the side of the housing 1 is hit, it first impacts the side of the protective plate 104, the protective plate 104 is squeezed to one side of the protrusion 103, the protrusion 103 slides through the sliding bracket 2 and the lower end of the sliding groove of the housing 1, and the lower end of the sliding bracket 2 slides inside the sliding groove of the housing 1. The protrusion 103 and the sliding bracket 2 slide in a horizontal direction.

[0049] Reference Figure 4-9 In this embodiment, a push rod 201 is slidably connected to one end of the sliding frame 2 near the groove of the housing 1. A slider 301 is slidably connected inside the groove of the housing 1. Spheres 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. A rotating column 203 is rotatably connected to one side of the upper end of the rotating shaft 3. A connecting frame 202 is rotatably connected to the upper end of the rotating column 203. A protrusion 303 is provided at the upper end of the rotating shaft 3. A large blade 304 surrounds the outer side of the protrusion 303.

[0050] The side of the connecting frame 202 is L-shaped. The upper end of one side of the connecting frame 202 is connected to the lower end of the push rod 201 away from the sliding frame 2. The rotating column 203 is matched with the connecting frame 202.

[0051] When the sliding frame 2 slides horizontally, it is pushed to one end of the connecting frame 202 by the push rod 201. A bearing is provided below the connecting frame 202, which facilitates the connecting frame 202 to drive the rotating shaft 3 to rotate horizontally via the rotating column 203. Please refer to the instruction manual appendix. Figure 6 and 7 As shown;

[0052] When slider 301 is not sliding, slider 301 is located at the end of the groove of housing 1 away from the internal hole of housing 1, and one end of ball 302 rotates and rubs against the inner wall of the groove of housing 1 in a horizontal direction. When slider 301 slides in a horizontal direction, ball 302 rotates 360°.

[0053] One end of the ball 302 rotates and rubs horizontally against the inner wall of the groove in the housing 1. The balls 302 rotate on both sides of the slider 301, which can reduce the friction between the slider 301 and the inner wall of the groove in the housing 1. In turn, the balls 302 can assist the slider 301 to slide horizontally under the drive of the push rod 201, the connecting frame 202 and the rotating shaft 3.

[0054] When slider 301 is not sliding, slider 301 is located at the end of the groove of housing 1 away from the internal hole of housing 1. Therefore, when sliding frame 2 drives slider 301 to slide towards the end away from the hole of housing 1 through push rod 201 and rotating shaft 3, slider 301 is in a stationary state. At this time, push rod 201 can drive rotating shaft 3 to rotate in the horizontal direction through connecting frame 202 and rotating column 203.

[0055] The protrusions 303 are distributed on both sides above the holes of the housing 1. The large blades 304 are matched with the protrusions 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 protrusions 303.

[0056] The outer side of the rotating shaft 3 is provided with a slot, the slot length is 1-2cm, and the slots are arranged vertically;

[0057] Wherein: When the outer side of the protective plate 104 is impacted, the protrusion 103 on the lower side of the protective plate 104 slides horizontally due to the impact. Since the sliding frame 2 at the upper end of the protrusion 103 is engaged in the sliding groove of the housing 1, the protrusion 103 and the sliding frame 2 slide horizontally. When the sliding frame 2 slides away from the hole of the housing 1, since the slider 301 is at the end of the groove of the housing 1 away from the hole inside the housing 1, the inner wall of the groove of the housing 1 forms a tight seal against one end of the slider 301. The sliding frame 2 drives the connecting frame 202 to rotate synchronously through the push rod 201. The connecting frame 202 drives the rotating shaft 3 to rotate horizontally through the rotating column 203. The slider 301 is in a stationary state. The rotating shaft 3 drives the large blade 304 to rotate synchronously through the protrusion 303.

[0058] When the sliding frame 2 slides towards the side closer to the hole in 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. The push rod 201 exerts a pushing force on the rotating shaft 3 and the upper end of the slider 301, and the two sides of the slider 301 are fitted with balls 302. The balls 302 reduce the friction between the slider 301 and the inner wall of the groove in the housing 1, so that the slider 301 can slide towards the side closer to the hole in the housing 1 inside the groove. Through the above steps, when the surface of the protective plate 104 is impacted, the sliding frame 2 and the protrusion 103 provide buffering and protection, preventing the surface of the housing 1 from being impacted. At the same time, the sliding frame 2 can slide, and the push rod 201, the connecting frame 202 and the rotating column 203 can drive the rotating shaft 3 to rotate in the horizontal direction, thereby assisting the rotation of the large blade 304 and the small blade 401. Thus, when the computer surface is impacted, rotational heat dissipation can be formed inside the computer.

[0059] Reference Figure 5-11In this embodiment, a spring 4 is elastically connected inside the slot of the rotating shaft 3, and a small blade 401 is elastically connected inside the spring 4. An inner cylinder 5 slides through the hole of the housing 1. A bent rod 501 is wrapped around the lower end of the inner cylinder 5. A pad block 503 is slidably nested and connected to the end of the bent rod 501 away from the inner cylinder 5. A pad ring 502 is provided on the outer side of the pad block 503.

[0060] Spring 4 is matched with small blade 401. When the rotating shaft 3 rotates, small blade 401 rotates synchronously. At the same time, small blade 401 slides elastically in a vertical direction through spring 4. The end of small blade 401 away from spring 4 is elastically pressed perpendicularly against the inner cylinder 5. Please refer to the instruction manual appendix. Figure 7 As shown;

[0061] When the inner cylinder 5 does not slide downward, the upper end of the inner cylinder 5 extends above the hole in the shell 1;

[0062] The bent rod 501 is arc-shaped with an arc angle of 50-90°. The bent rod 501 is wrapped around the outer side of the upper end of the washer ring 502, and the lower end of the bent rod 501 is perpendicularly pressed against the upper part of the washer ring 502.

[0063] The washer 502 is set in a semi-circular ring. Both the washer 502 and the bent rod 501 are located below the housing 1. The lower end of the washer 502 is in horizontal contact with the table. The pad block 503 is distributed on the outer side of the upper end of the washer 502. The washer 502 is made of a deformable material, such as rubber.

[0064] The pad 503 penetrates the interior of the washer ring 502. A track is provided at the upper end of the pad 503, and one end of the bent rod 501 slides and nests within the track. (Refer to the instruction manual for details.) Figure 10 As shown;

[0065] Wherein: When the shell 1 is placed on the table, the pad ring 502 is simultaneously attached to the table. At this time, the upper end of the pad ring 502 lifts the inner cylinder 5 upward through the bent rod 501, so that the upper end of the inner cylinder 5 extends to the top of the hole in the shell 1.

[0066] When the rotating shaft 3 rotates horizontally, the small blade 401 rotates synchronously. Simultaneously, the small blade 401 slides elastically vertically via the spring 4. When the small blade 401 on the outer side of the rotating shaft 3 rotates to one side of the inner cylinder 5, the end of the small blade 401 away from the spring 4 elastically presses against the inner cylinder 5 vertically. The inner cylinder 5 then presses downwards against one end of the bent rod 501, causing the bent rod 501 to bend downwards. Since the bent rod 501 surrounds the outer side of the upper end of the washer ring 502, the lower end of the bent rod 501 is perpendicularly pressed against the upper part of the washer ring 502. The end of the bent rod 501 away from the inner cylinder 5 slides inside the pad block 503, facilitating the movement of the bent rod 501. The upper end of the pad ring 502 is further compressed downward, thereby increasing the contact area between the lower end of the pad ring 502 and the desktop. When the surface of the protective plate 104 is impacted, the rotation of the shaft 3 and the continuous vertical compression of the small blade 401 help the pad ring 502 to further adhere to the desktop, thereby increasing the overall stability of the casing 1. This allows the computer to buffer the impact on the surface protective plate 104 while increasing the stability of the casing 1, preventing the computer from easily shifting after an impact. The rotation of the small blade 401 and the large blade 304 also provides auxiliary heat dissipation.

[0067] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "linked" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions 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 within the scope of the claims and specification of the present invention.

Claims

1. A desktop microcomputer, comprising a casing (1), characterized in that: The housing (1) is equipped with a processor (101) inside, an interface (102) is installed on one side of the surface of the housing (1), and protrusions (103) are slidably connected on both sides of the lower end of the housing (1). A protective plate (104) is provided on the side of the protrusions (103). The lower part of the shell (1) has sliding grooves on both sides, which are arranged in a horizontal direction. The lower part of the shell (1) has a hole in the middle, and the shell (1) has grooves on both sides near the hole. The protruding strip (103) is provided with a sliding frame (2) near the upper end of the groove of the housing (1). The sliding frame (2) penetrates the inside of the groove of the housing (1) and extends to the upper end of the groove. The sliding frame (2) slides horizontally inside the groove of the housing (1). The protrusion (103) is matched with the protective plate (104), the protective plate (104) is "L" shaped, and the protective plate (104) extends to both sides of the shell (1); The sliding frame (2) is slidably connected to a push rod (201) at one end near the groove of the housing (1). A slider (301) is slidably connected inside the groove of the housing (1). A ball (302) is rotatably nested on both sides of the slider (301). A rotating shaft (3) is rotatably connected to the upper end of the slider (301). A rotating column (203) is rotatably connected to one side of the upper end of the rotating shaft (3). A connecting frame (202) is rotatably connected to the upper end of the rotating column (203). A protrusion (303) is provided at the upper end of the rotating shaft (3). A large blade (304) surrounds the outside of the protrusion (303). The side of the connecting frame (202) is L-shaped. The upper end of one side of the connecting frame (202) is connected to the lower end of the push rod (201) away from the sliding frame (2). The rotating column (203) is matched with the connecting frame (202). When the slider (301) is not sliding, the slider (301) is located at one end of the groove of the shell (1) away from the internal hole of the shell (1), and one end of the ball (302) rotates and rubs against the inner wall of the groove of the shell (1) in a horizontal direction. When the slider (301) slides in a horizontal direction, the ball (302) rotates 360°. The protrusions (303) are distributed on both sides above the holes in the housing (1), and the large blades (304) are matched with the protrusions (303). The large blades (304) are distributed on both sides inside the housing (1). The outer side of the rotating shaft (3) is provided with a slot, the length of which is 1-2cm.

2. A desktop microcomputer according to claim 1, characterized in that, The slot of the rotating shaft (3) is elastically connected to a spring (4), and the inner side of the spring (4) is elastically connected to a small blade (401). The inner cylinder (5) slides through the hole of the housing (1). The lower end of the inner cylinder (5) is surrounded by a bent rod (501). The end of the bent rod (501) away from the inner cylinder (5) is slidably nested and connected to a pad (503). A pad ring (502) is provided on the outer side of the pad (503).

3. A desktop microcomputer according to claim 2, characterized in that, The spring (4) is matched 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) slides elastically in the vertical direction through the spring (4). The end of the small blade (401) away from the spring (4) is elastically squeezed in the vertical direction with the inner cylinder (5).

4. A desktop microcomputer according to claim 2, characterized in that, When the inner cylinder (5) does not slide downward, the upper end of the inner cylinder (5) extends above the hole in the shell (1); The bent rod (501) is set in an arc shape with an arc angle of 50-90°. The bent rod (501) is wrapped around the outer side of the upper end of the washer (502), and the lower end of the bent rod (501) is pressed against the upper part of the washer (502) in a vertical direction. The washer (502) is set in a semi-circular ring. Both the washer (502) and the bent rod (501) are located below the housing (1). The lower end of the washer (502) is horizontally attached to the table. The pad (503) is distributed on the outer side of the upper end of the washer (502).

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