Portable external computer mainboard

Abstract

The utility model discloses a portable external computer mainboard, and relates to the technical field of computer mainboards. The mainboard comprises a mainboard shell and a mainboard body, the mainboard body is arranged at the bottom of the inner wall of the mainboard shell, a groove is formed in one side of the mainboard shell, a notch is formed in the adjacent side of the mainboard shell, an external connector is arranged on one side of the mainboard body, a connecting plate is arranged in the notch in a sliding fit mode, and an organ type dust cover is arranged between the connecting plate and the lower side of the notch. T-shaped grooves are formed in the upper side of the connecting plate and the upper side of the notch, T-shaped clamping plates are arranged in the T-shaped grooves in a sliding fit mode, and two springs are arranged between the two T-shaped clamping plates. The worm is matched with the two rotating pieces, so that the rotating handle is conveniently rotated to enable the rotating plate to drive the clamping piece to be separated from the clamping groove or clamped in the clamping groove, the T-shaped clamping plate is conveniently pulled out of the T-shaped groove or fixed in the T-shaped groove, the convenience of replacing the spring is improved, and the replacement efficiency of the spring is improved. And the situation that the connecting plate needs to be pulled manually due to insufficient elasticity of the spring is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of computer mainboard, concretely relates to a portable external computer mainboard. BACKGROUND

[0002] The mainboard, also known as the mainboard, system board, etc. It is the center or main circuit board of a complex electronic system, such as a computer. The current electronic equipment needs to be connected to the computer mainboard during use to improve the function of the equipment.

[0003] The Chinese patent with publication number CN209343239U discloses a portable external computer mainboard, which comprises: a computer mainboard body and an external connector embeddedly connected with the side surface of the computer mainboard body. The two sides of the external connector are provided with a sliding groove in the inner wall of the computer mainboard body. The inner side of the sliding groove is provided with a shielding assembly. The shielding assembly comprises a synchronous rod, a shielding piece, a magnet piece and a contraction spring. One end of the shielding piece is bonded to the side surface of the computer mainboard body. The end of the shielding piece away from the computer mainboard body is bonded with the synchronous rod. The two ends of the synchronous rod are provided with the contraction spring on the outer side surface through welding.

[0004] However, the portable external computer mainboard disclosed in the application has the problem that the contraction ability of the contraction spring gradually decreases after long-term use, making it difficult to drive the synchronous rod to the designed position height. At this time, the magnet pieces need to be attracted together by manually pulling the synchronous rod upwards. The contraction spring is fixed to the computer mainboard body and the synchronous rod through welding, so it is not easy to replace the contraction spring. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a portable external computer mainboard that solves the problems raised in the background.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0007] A portable external computer mainboard, comprising: a mainboard shell and a mainboard body, the mainboard body is installed on the inner wall bottom of the mainboard shell, one side of the mainboard shell is provided with a recess, the adjacent side is provided with a slot, the slot transversely penetrates the recess, the mainboard body is provided with an external connector on one side, the side of the external connector away from the mainboard body penetrates into the recess, a connecting plate is slidably fitted in the slot, the connecting plate is located on the side of the external connector away from the mainboard body, and a concertina dust cover is installed between the connecting plate and the lower side of the slot.

[0008] The upper side of the connecting plate and the upper side of the slot are provided with T-shaped grooves, the T-shaped grooves penetrate through one side of the main plate shell, T-shaped clamping plates are slidingly matched in the T-shaped grooves, two springs are arranged between the two T-shaped clamping plates, an external connector is located between the two springs, a worm and two rotating pieces are rotatably matched in the T-shaped clamping plate, two clamping pieces are slidingly matched in the T-shaped clamping plate, the worm is located between the two rotating pieces, the rotating piece is engaged with the worm, both ends of the rotating piece are provided with rotating plates, the rotating plates are transversely provided with inclined grooves, the inclined grooves penetrate through the rotating plates, the clamping pieces penetrate through the corresponding two inclined grooves, four clamping grooves are arranged on the side of the T-shaped groove away from the spring, one end of the clamping piece away from the rotating plate is clamped in the clamping groove, and the opposite inner end faces of the two worms are provided with rotating handles.

[0009] Optionally, the two T-shaped clamping plates are provided with adjusting grooves, the opposite outer sides of the two T-shaped clamping plates are provided with four communication grooves, the communication grooves are communicated with the adjusting grooves, one end of the clamping piece penetrates through the communication groove and is clamped in the clamping groove, the worm, the rotating piece and the rotating plate are rotatably matched in the adjusting groove, the opposite inner sides of the two T-shaped clamping plates are provided with connecting grooves, the connecting grooves are communicated with the adjusting grooves, and one end of the rotating handle is rotatably matched in the connecting groove.

[0010] Optionally, the opposite outer sides of the two adjusting grooves are provided with circular grooves, one end face of the worm is provided with a rotating block corresponding to the circular groove, the rotating block is rotatably matched in the circular groove, and the worm is located between the rotating block and the rotating handle.

[0011] Optionally, the rotating piece comprises two fixed plates arranged between the upper and lower sides of the adjusting groove, a rotating rod is arranged between the corresponding two rotating plates, the rotating rod transversely penetrates through the two fixed plates, the rotating rod is provided with a worm wheel on the side, the worm wheel is rotatably matched between the two fixed plates, and the worm wheel is engaged with the worm.

[0012] Optionally, the clamping piece comprises a connecting rod and two plug blocks, two fixed ears are arranged on the end face of the plug block close to the connecting rod, the fixed ears are arranged on the side of the connecting rod, the rotating plate is located between the corresponding two fixed ears, the connecting rod transversely penetrates through the corresponding two inclined grooves, and one end of the plug block away from the fixed ear penetrates through the communication groove and is clamped in the clamping groove.

[0013] Optionally, the two sides of the adjusting groove are provided with two vertical sliding grooves I, and the two ends of the connecting rod are slidingly matched in the corresponding vertical sliding grooves I.

[0014] Optionally, two vertical sliding grooves II are arranged on the two sides of the slot, and two sliding blocks are arranged on the two sides of the connecting plate and slidingly matched in the vertical sliding grooves II.

[0015] Optionally, the main plate shell is provided with an air inlet and an air outlet on the upper and lower sides respectively, the air inlet and the air outlet are both provided with filter screens, a support plate is arranged between the inner walls of the main plate shell, two motors are arranged on the upper side of the support plate, the motor output shafts vertically penetrate the support plate, the motor output shafts are fixedly connected with fan blades, the fan blades are rotatably arranged on the lower side of the support plate, and the fan blades are located above the main plate body.

[0016] Compared with the prior art, the utility model has the following beneficial effects, of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below:

[0017] The worm and the two rotating members are matched, the rotating handle is rotated to drive the clamping member to be separated from or clamped in the clamping groove, the T-shaped clamping plate is pulled out of or fixed in the T-shaped groove, the convenience of replacing the spring is improved, the situation that the connecting plate needs to be manually pushed due to insufficient spring elasticity is reduced, the inclined groove facilitates the rotation of the rotating plate to drive the clamping member to slide up and down, and the probability that the up-and-down sliding of the clamping member and the rotation of the rotating plate affect each other is reduced.

[0018] The specific embodiments of the utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings

[0020] In the drawings:

[0021] Figure 1 It is a schematic view of the three-dimensional structure of the main plate;

[0022] Figure 2 It is a schematic view of the sectional structure of the connecting plate;

[0023] Figure 3 It is a schematic view of the sectional structure of the T-shaped clamping plate;

[0024] Figure 4 It is a schematic view of the sectional structure of the main plate.

[0025] In the drawings, the components represented by the numbers are listed as follows:

[0026] Mainboard shell 1, mainboard body 2, external connector 3, connecting plate 4, organ type dust cover 5, T-shaped clamping plate 6, spring 7, worm 8, worm wheel 9, rotating rod 10, fixed plate 11, rotating plate 12, inclined groove 13, connecting rod 14, fixing lug 15, plug 16, vertical sliding groove 17, rotating block 18, rotating handle 19, magnet 20, vertical sliding groove 21, sliding block 22, air inlet 23, air outlet 24, supporting plate 25, motor 26, fan blade 27.

[0027] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] The mainboard, also known as the motherboard, is installed in the computer case and is one of the most basic and important components of the computer, playing a crucial role in the entire computer system. The quality of the mainboard manufacturing determines the stability of the hardware system. The mainboard is closely related to the CPU, and each major upgrade of the CPU will inevitably lead to the replacement of the mainboard. The mainboard is the core of the computer hardware system and is also the largest printed circuit board in the case. The main function of the mainboard is to transmit various electronic signals, and some chips also handle some peripheral data. All components in the computer host are connected through the mainboard, and the control of the system memory, storage devices and other I / O devices must be completed through the mainboard when the computer is running normally. Whether the performance of the computer can be fully utilized, whether the hardware function is sufficient, and how the hardware compatibility is, etc. are all determined by the design of the mainboard. The quality of the mainboard determines the overall performance, service life and functional expansion capability of a computer to some extent.

[0031] The motherboard employs an open architecture. Most motherboards have 6-15 expansion slots for connecting control cards (adapters) for PC peripherals. By replacing these cards, corresponding subsystems of the microcomputer can be partially upgraded, giving manufacturers and users greater flexibility in configuring their systems. In short, the motherboard plays a crucial role in the entire microcomputer system. It can be said that the type and level of the motherboard determine the type and level of the entire microcomputer system, and the performance of the motherboard affects the performance of the entire microcomputer system.

[0032] An external motherboard is a relatively new computer hardware design that breaks away from the traditional limitation of integrating the motherboard inside the computer case. It connects to the computer host through specific interfaces and connection methods, realizing the externalization of motherboard functions. This design concept aims to meet users' diverse needs for computer performance expansion, portability, and personalization.

[0033] I. Motherboard Structure

[0034] The so-called motherboard architecture refers to the general standard established based on the layout, size, shape, and power supply specifications of the various components on the motherboard, which all motherboard manufacturers must adhere to. Motherboard architectures include AT, Baby-AT, ATX, Micro ATX, LPX, NLX, Flex ATX, E-ATX, WATX, and BTX, among others. Among them, AT and Baby-AT are old motherboard structures from many years ago and have been phased out; while LPX, NLX, and Flex ATX are variations of ATX, mostly found in foreign branded computers, and not so common in China; E-ATX and W-ATX are mostly used in server / workstation motherboards; ATX is the most common motherboard structure on the market, with many expansion slots, and the number of PCI slots is 4-6, and most motherboards use this structure; Micro ATX, also known as MiniATX, is a simplified version of the ATX structure, which is often referred to as a "small board", with fewer expansion slots, and the number of PCI slots is 3 or less, mostly used in branded computers and equipped with small cases; while BTX is the latest generation of motherboard structure developed by Intel, but it was abandoned before it became popular, and ATX continued to be used.

[0035] II. Working Principle

[0036] Beneath the circuit board are neatly arranged circuit traces; above are clearly defined components: slots, chips, resistors, capacitors, etc. When the host is powered on, current flows instantaneously through the CPU, northbridge and southbridge chips, memory slots, AGP slot, PCI slot, IDE interface, and serial, parallel, and PS / 2 ports on the motherboard's edge. Subsequently, the motherboard identifies the hardware using the BIOS (Basic Input / Output System) and enters the operating system to support the system platform's operation.

[0037] Three, the features of external computer motherboards

[0038] 1. Flexible expansion: External computer motherboards provide a rich variety of interfaces and expansion slots, allowing users to easily add or replace hardware devices such as dedicated graphics cards, sound cards, network cards, and hard drives. Compared to traditional motherboards, the expansion is more flexible, without the need to open the case for complex internal installation operations, reducing the difficulty and threshold of hardware upgrades.

[0039] 2. Good heat dissipation performance: Since the external computer motherboard exposes the heat-generating components to the external environment, air circulation is smoother, which is conducive to heat dissipation. Some external motherboards are also equipped with special cooling devices such as fans, heat sinks, or water cooling systems, which can effectively reduce the temperature of the motherboard and hardware devices, improving system stability and reliability.

[0040] 3. Easy maintenance and repair: When the computer fails, the maintenance and repair of the external computer motherboard is more convenient. Users can directly check and repair the external motherboard without the need to disassemble the entire computer case, saving time and effort. At the same time, the structure of the external motherboard is relatively simple, easy to understand and operate, even non-professional users can easily get started.

[0041] 4. Personalization and aesthetics: External computer motherboards provide more space for users to personalize their choices. Users can choose different external motherboards based on their preferences in terms of appearance, color, and material, creating a unique computer system. In addition, the design of the external motherboard is usually more simple and beautiful, which can be matched with various computer cases and peripheral devices, improving the overall visual effect.

[0042] Four, the development trend of external computer motherboards

[0043] 1. Higher performance and integration: With the continuous progress of technology, the performance and integration of external computer motherboards will continue to improve. Future external motherboards may integrate more powerful processors, graphics cards, and memory components, providing comparable or even higher performance than traditional motherboards. At the same time, motherboard manufacturers will continue to optimize circuit design and manufacturing processes to improve motherboard stability and reliability.

[0044] 2. More abundant interfaces and connection methods: In order to meet the connection needs of users for different devices, the interfaces and connection methods of external computer motherboards will be more diverse. In addition to common USB, HDMI, Thunderbolt, etc. interfaces, future may appear more high-speed, more universal interface standards. In addition, wireless connection technology will gradually be applied to external motherboards, realizing more convenient device connection.

[0045] 3. Intelligence and Automation: With the development of artificial intelligence and the Internet of Things (IoT) technologies, external computer motherboards will become increasingly intelligent and automated. Future external motherboards may integrate intelligent monitoring systems to monitor the operating status and temperature of hardware devices in real time, automatically adjusting fan speeds or reducing hardware frequencies to ensure system stability and security. Simultaneously, the motherboards may also support voice control and gesture control functions, providing a more convenient user experience.

[0046] 4. Integration with Cloud and Edge Computing: The rise of cloud and edge computing has brought new opportunities for the development of external computer motherboards. Future external motherboards may be deeply integrated with cloud and edge computing platforms, enabling flexible allocation and sharing of computing resources. Users can choose to perform calculations locally on the external motherboard or send tasks to the cloud or edge computing nodes for processing, improving computing efficiency and resource utilization.

[0047] Please see Figures 1-4 As shown, this embodiment provides a portable external computer motherboard, including: a motherboard shell 1 and a motherboard body 2. The motherboard body 2 is installed at the bottom of the inner wall of the motherboard shell 1. The motherboard shell 1 has a groove on one side and a slot on the adjacent side. The slot extends horizontally through the groove. An external connector 3 is installed on one side of the motherboard body 2. The side of the external connector 3 away from the motherboard body 2 extends into the groove. A connecting plate 4 is slidably fitted in the slot. The connecting plate 4 is located on the side of the external connector 3 away from the motherboard body 2. An accordion-style dust cover 5 is installed between the connecting plate 4 and the lower side of the slot. Two magnets 20 are installed on the upper side of the connecting plate 4 and the upper side of the slot.

[0048] T-shaped grooves are provided on the upper side of the connecting plate 4 and the upper side of the slot. The T-shaped grooves penetrate one side of the main body shell 1. T-shaped clamping plates 6 are slidably fitted in the T-shaped grooves. Two springs 7 are installed between the two T-shaped clamping plates 6. The external connector 3 is located between the two springs 7. A worm gear 8 and two rotating parts are rotatably fitted in the T-shaped clamping plates 6, and two snap-fit ​​parts are slidably fitted. The worm gear 8 is located between the two rotating parts. The rotating parts mesh with the worm gear 8. Rotating plates 12 are installed at both ends of the rotating parts. The rotating plates 12 are provided with inclined grooves 13 in the transverse direction. The inclined grooves 13 penetrate the rotating plates 12. The upper part of the snap-fit ​​parts penetrates the corresponding two inclined grooves 13. Four snap-fit ​​slots are provided on the side of the T-shaped groove away from the springs 7. The end of the snap-fit ​​parts away from the rotating plates 12 is snapped into the snap-fit ​​slots. A handle 19 is installed on the opposite inner end face of the two worm gears 8. The end of the handle 19 near the worm gear 8 is rotatably fitted in the T-shaped clamping plates 6.

[0049] The application of one aspect of the embodiment is: when the spring 7 needs to be replaced, the connecting plate 4 is pushed down to release the attraction between the magnets 20, then the two knobs 19 are rotated clockwise, the knobs 19 drive the worm 8 to rotate, the worm 8 drives one of the rotating members to rotate clockwise and the other rotating member to rotate counterclockwise, the rotating members rotate to drive the rotating plate 12 to rotate away from the clamping groove, the rotating plate 12 rotates to pull the clamping piece through the inclined groove 13, so that the clamping piece gradually separates from the clamping groove, thereby releasing the limiting of the clamping piece on the T-shaped clamping plate 6, then the two T-shaped clamping plates 6 are pulled out of the T-shaped slot along the slot, and then the new T-shaped clamping plate 6 is pushed into the T-shaped slot, thereby completing the replacement of the two springs 7, and the same operation is performed on the other T-shaped clamping plate 6, that is, the knob 19 is rotated counterclockwise, and the clamping piece is clamped in the clamping groove, thereby completing the fixation of the T-shaped clamping plate 6. It should be noted that all electrical equipment involved in the present application can be powered by a battery or an external power source.

[0050] The worm 8 cooperates with the two rotating members to facilitate the rotation of the knob 19 to drive the clamping piece to separate from or be clamped in the clamping groove, thereby facilitating the pulling out or fixation of the T-shaped clamping plate 6 in the T-shaped slot, improving the convenience of replacing the spring 7, and reducing the need to manually push the connecting plate 4 due to insufficient spring force. The inclined groove 13 facilitates the rotation of the rotating plate 12 to drive the clamping piece to slide up and down, thereby reducing the probability of mutual influence between the up and down sliding of the clamping piece and the rotation of the rotating plate 12.

[0051] As shown in Figure 2 , 3 , the two T-shaped clamping plates 6 of the embodiment are provided with adjusting grooves, the opposite outer sides of the two T-shaped clamping plates 6 are provided with four communication grooves, the communication grooves are connected with the adjusting grooves, one end of the clamping piece penetrates through the communication groove and is clamped in the clamping groove, the worm 8, the rotating member and the rotating plate 12 are rotationally fitted in the adjusting groove, the opposite inner sides of the two T-shaped clamping plates 6 are provided with connecting grooves, the connecting grooves are connected with the adjusting grooves, and one end of the knob 19 close to the worm 8 is rotationally fitted in the connecting groove. The adjusting groove provides a space for the rotation of the worm 8, the rotating member and the rotating plate 12, the communication groove facilitates the sliding of the clamping piece into or out of the adjusting groove, and the connecting groove improves the stability of the rotation of the knob 19.

[0052] As shown in Figure 2 , 3 , the opposite outer sides of the two adjusting grooves of the embodiment are provided with circular grooves, one end surface of the worm 8 is provided with a rotating block 18 corresponding to the circular groove, the rotating block 18 is rotationally fitted in the circular groove, and the worm 8 is located between the rotating block 18 and the knob 19. The rotating block 18 cooperates with the circular groove to improve the stability of the rotation of the worm 8.

[0053] As shown in Figure 3As shown in the figure, the rotating part of the embodiment includes two fixed plates 11 installed between the upper and lower sides of the adjusting groove, and a rotating rod 10 installed between the corresponding two rotating plates 12. The rotating rod 10 transversely penetrates the two fixed plates 11, and the worm gear 9 is installed on the side of the rotating rod 10. The worm gear 9 is rotatably matched between the two fixed plates 11, and the worm gear 9 is engaged with the worm 8. Through the cooperation of the fixed plate 11 and the rotating rod 10, the stability of the worm gear 9 during rotation is improved, and the probability of disengagement of the worm gear 9 and the worm 8 is reduced. The rotating rod 10 and the rotating plate 12 are driven to rotate by the rotation of the worm gear 9.

[0054] As shown in the figure, Figure 2 , 3 The clamping part of the embodiment includes a connecting rod 14 and two insertion blocks 16. The insertion block 16 is installed with two fixed ears 15 near one end face of the connecting rod 14. The fixed ear 15 is installed on the side of the connecting rod 14. The rotating plate 12 is located between the corresponding two fixed ears 15. The connecting rod 14 transversely penetrates the corresponding two inclined grooves 13. The end of the insertion block 16 away from the fixed ear 15 penetrates the communication groove and is clamped in the clamping groove. The T-shaped clamping plate 6 is fixed in the T-shaped groove by clamping the insertion block 16 in the clamping groove, which reduces the probability of the T-shaped clamping plate 6 sliding out of the T-shaped groove during use. The probability of the rotating plate 12 rotating and contacting and rubbing the insertion block 16 is reduced by the fixed ear 15. The probability of horizontal sliding of the connecting rod 14 is reduced by the rotating plate 12 located between the corresponding two fixed ears 15.

[0055] As shown in the figure, Figure 3 The adjusting groove of the embodiment is provided with two vertical sliding grooves 17 on both sides. The two ends of the connecting rod 14 are respectively slidingly matched in the corresponding vertical sliding grooves 17. The displacement direction and displacement distance of the insertion block 16 are limited by the cooperation of the vertical sliding groove 17 and the connecting rod 14, and the stability of the upward and downward sliding of the insertion block 16 is improved.

[0056] As shown in the figure, Figure 2 The slot of the embodiment is provided with two vertical sliding grooves 21 on both sides. The connecting plate 4 is provided with two sliding blocks 22 on both sides. The sliding block 22 is slidingly matched in the vertical sliding groove 21. The stability of the upward and downward sliding of the connecting plate 4 is improved by the cooperation of the sliding block 22 and the vertical sliding groove 21.

[0057] As shown in the figure, Figure 4As shown, the mainboard shell 1 of the embodiment is respectively provided with an air inlet 23 and an air outlet 24 on the upper and lower sides, the air inlet 23 and the air outlet 24 are both provided with filter screens, a support plate 25 is arranged between the inner walls of the mainboard shell 1, two motors 26 are arranged on the upper side of the support plate 25, the output shafts of the motors 26 vertically penetrate the support plate 25, the output shafts of the motors 26 are fixedly connected with fan blades 27, the fan blades 27 are rotatably arranged on the lower side of the support plate 25, the fan blades 27 are located above the mainboard body 2, the air inlet 23 and the air outlet 24 are matched, the fan blades 27 can easily suck external air into the mainboard shell 1 and discharge the hot air in the mainboard shell 1, the heat dissipation effect of the mainboard body 2 is improved, the filter screens can easily block the dust in the air entering the mainboard shell 1, the probability that the dust affects the use of the mainboard body 2 is reduced, the motors 26 can easily drive the fan blades 27 to rotate, and the flow rate of the air in the mainboard shell 1 is accelerated.

[0058] The utility model is not limited to the above-mentioned embodiment, any person should know the structural change made under the inspiration of the utility model, any technical scheme with the same or similar utility model falls into the protection scope of the utility model. The utility model does not describe the technology, shape and structure part in detail, which is the known technology.

Claims

1. A portable external computer motherboard, characterized in that, include: The motherboard housing (1) and the motherboard body (2) are installed on the bottom of the inner wall of the motherboard housing (1). The motherboard housing (1) has a groove on one side and a slot on the adjacent side. The motherboard body (2) has an external connector (3) on one side. A connecting plate (4) is slidably fitted in the slot. An accordion-style dust cover (5) is installed between the connecting plate (4) and the lower side of the slot. The upper side of the connecting plate (4) and the upper side of the slot are provided with T-shaped grooves. T-shaped clamping plates (6) are slidably fitted in the T-shaped grooves. Two springs (7) are installed between the two T-shaped clamping plates (6). A worm (8) and two rotating parts are rotatably fitted in the T-shaped clamping plates (6), and two snap-fit ​​parts are slidably fitted. The rotating parts mesh with the worm (8). Rotating plates (12) are installed at both ends of the rotating parts. The rotating plates (12) are provided with inclined grooves (13) in the transverse direction. The upper part of the snap-fit ​​parts passes through the corresponding two inclined grooves (13). Four snap-fit ​​slots are provided on the side of the T-shaped groove away from the springs (7). The end of the snap-fit ​​parts away from the rotating plates (12) is snapped into the snap-fit ​​slots.

2. A portable external computer motherboard according to claim 1, characterized in that, Both T-shaped plates (6) are provided with adjustment grooves. Both T-shaped plates (6) are provided with four connecting grooves on their opposite outer sides. One end of the snap-fit ​​part passes through the connecting groove and snaps into the slot. The worm (8), the rotating part and the rotating plate (12) are all rotatably fitted in the adjustment groove.

3. A portable external computer motherboard according to claim 2, characterized in that, Both adjustment slots have circular grooves on their outer sides, and a rotating block (18) corresponding to the circular groove is installed on one end face of the worm (8).

4. A portable external computer motherboard according to claim 2, characterized in that, The rotating component includes two fixed plates (11) installed between the upper and lower sides of the adjustment groove, and a rotating rod (10) installed between the two corresponding rotating plates (12). The rotating rod (10) passes through the two fixed plates (11) laterally, and a worm wheel (9) is installed around the rotating rod (10). The worm wheel (9) meshes with the worm (8).

5. A portable external computer motherboard according to claim 2, characterized in that, The snap-fit ​​component includes a connecting rod (14) and two inserts (16). Two fixing ears (15) are installed on one end face of the insert (16) near the connecting rod (14). The fixing ears (15) are installed on the periphery of the connecting rod (14). The connecting rod (14) passes through two corresponding inclined slots (13) laterally.

6. A portable external computer motherboard according to claim 5, characterized in that, Two vertical sliding grooves (17) are provided on both sides of the adjustment groove, and the two ends of the connecting rod (14) are respectively slidably fitted in the corresponding vertical sliding grooves (17).

7. A portable external computer motherboard according to claim 1, characterized in that, Two vertical sliding grooves (21) are provided on both sides of the groove opening, and two sliders (22) are installed on both sides of the connecting plate (4). The sliders (22) slide in the vertical sliding grooves (21).

8. A portable external computer motherboard according to claim 1, characterized in that, The motherboard housing (1) has an air inlet (23) and an air outlet (24) on its upper and lower sides respectively. A support plate (25) is installed between the two sides of the inner wall of the motherboard housing (1). Two motors (26) are installed on the upper side of the support plate (25). The output shaft of the motors (26) is fixedly connected to fan blades (27).

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