CN218866387U

CN218866387U - Notebook computer with new structure

Info

Publication number: CN218866387U
Application number: CN202123187486.9U
Authority: CN
Inventors: 白勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2023-04-14
Anticipated expiration: 2031-12-17

Abstract

The main board and the heat dissipation system of the notebook computer with the new structure are arranged on the surface A; the battery and the external interface are placed on the C surface and are connected with the mainboard through cables, and the cables penetrate through a rotating shaft of the notebook computer; the heat dissipation system is in close contact with the A-side shell so as to utilize the A-side shell to assist in heat dissipation. The utility model discloses make full use of notebook computer's inner space improves the heat-sinking capability, duration, and the extending capability provides better use and experiences, keeps good portability simultaneously.

Description

Notebook computer with new structure

Technical Field

The utility model belongs to the technical field of the computer, in particular to new construction notebook computer.

Background

The essence of a notebook computer is a mobile computing tool, and movement and computing are fundamental attributes thereof. The mobility includes weight, volume, endurance. Computing power includes performance, heat dissipation, scalability. These properties are contradictory and restrictive. All designs of notebook computers are balancing these contradictions, and the ultimate pursuit is light weight, small size, high endurance, high performance, and high expandability.

In a notebook computer with a traditional structure, main components such as a mainboard, a heat dissipation, a battery, an interface and the like are concentrated on a C surface. Limited by fuselage size and weight, these components are constrained to one another and do not perform well:

1. limited by size, small scale of the radiating component, limited performance and few external interfaces.

2. Limited by thickness, poor internal expandability, short keyboard key stroke and poor typing experience.

3. Limited by weight and space, the battery capacity cannot be too large, and endurance is poor.

4. The air inlet is arranged at the bottom of the machine body, so that the machine body is easy to shield during use and has poor environmental adaptability.

5. The air outlet is either shielded by the screen or directly blown to the right hand of the user using the mouse, and the use experience is poor.

6. The high body temperature during high load operation is poor in user experience, and also affects battery life.

7. The main board is arranged below the keyboard, and liquid splashing is easy to cause faults.

It can be seen that all the problems, whether performance, heat dissipation, scalability, or user experience, can be summarized as a point: the utilization of the inner space of the notebook computer. The utilization of the internal space of the notebook computer with the traditional structure is almost achieved, and the notebook computer has no great potential to be dug. To make a breakthrough in performance, some structural innovation is required.

Compared with the most traditional notebook computer structure, some novel designs, such as a surface book and a two-in-one computer represented by surface pro, are available, wherein a screen portion of the surface book includes a motherboard, a heat dissipation system, and a battery, and a keyboard portion includes a graphics card, a heat dissipation system, and a battery. In the two-in-one type, the main components such as the main board, the heat dissipation system, and the battery are all concentrated on the screen portion.

However, the main board, the heat dissipation part and the battery are all placed on the screen part in the two designs, the purpose is to form a product form integrating a notebook computer and a flat board, the screen part can be detached and used independently, the improvement on the aspects of performance, endurance, heat dissipation, expansibility and the like is not involved, and the traditional use mode of the notebook computer is directly changed by the design, so that the use experience is influenced. Compared with the traditional structure product, the performance, endurance, heat dissipation and expansibility of the composite material have no advantages. The surface pro is slightly better in portability, but the thickness and the weight of the surface book are larger than those of products with the same size and the traditional structure due to the complex structure. Meanwhile, the screen parts of the two designs comprise the mainboard, the heat dissipation system and the battery, so that the occupied space of each part is large, the parts are restricted with each other, and the defects of the notebook computer with the traditional structure still exist.

Disclosure of Invention

In order to overcome the shortcomings of the prior art, the present invention provides a notebook computer with a new structure, which can make full use of the internal space, and balance the basic attributes of movement and calculation while providing better use experience.

In order to realize the purpose, the utility model discloses a technical scheme be:

the mainboard and the heat dissipation system of the notebook computer with the new structure are arranged on the surface A; the battery and the external interface are arranged on the C surface and connected with the mainboard through cables, and the cables penetrate through a rotating shaft of the notebook computer; the heat dissipation system is in close contact with the A-side shell so as to utilize the A-side shell to assist in heat dissipation.

In one embodiment, the arrangement position of the main board and the heat dissipation system on the surface A is positioned at the lower part so as to lower the center of gravity; when the weight of the surface C and the weight of the surface A meet the condition that the surface A is unfolded to 180 degrees, the stabilizing moment provided by the surface C is larger than the overturning moment of the surface A, and the gravity center position of the whole notebook computer is located in the range of the foot pad of the surface C, so that the notebook computer is kept balanced.

In one embodiment, the cells have multiple groups, and the weight of the C side is increased by increasing the cell capacity to balance the weight of the A side.

In one embodiment, the C surface is provided with an interface board and a power control board, the interface board adopts a TypeC docking station architecture, the external interface, a keyboard, a touch pad and a loudspeaker of the notebook computer are all connected with the interface board, and the interface board passes through a rotating shaft on one side of the notebook computer through a standard TypeC cable to be connected with a TypeC interface on a main board; the battery is connected with a power supply control panel, and the power supply control panel penetrates through a rotating shaft on the other side of the notebook computer through a power supply cable to be connected with a power supply interface on the mainboard.

In one embodiment, the notebook computer employs a variable torque spindle.

In one embodiment, the screen backplate of the notebook computer is covered with an aerogel thermal insulation film and a graphite thermal conduction film.

In one embodiment, the inner surface of the A-side shell of the notebook computer is provided with a reinforcing rib.

In one embodiment, the main board is located below an a-side shell of the notebook computer, the heat dissipation system uses a T-shaped soaking board as a heat dissipation component, one end of the T-shaped soaking board is in close contact with a CPU heating core, the other end of the T-shaped soaking board is in close contact with a heat dissipation area of the a-side shell, and the a-side shell is in a step shape, so that the height of the heat dissipation area is consistent with that of the T-shaped soaking board.

In one embodiment, the main board is located below an a-side casing of the notebook computer, the heat dissipation system uses heat pipes, fins and fans as heat dissipation components, and the heat pipes linearly penetrate through heat generation components on the main board; the fins are welded on the heat pipe and are in close contact with the inner surface of the shell on the A side; the bottom of the A-side shell is provided with an air inlet groove, and the upper part of the A-side shell is provided with an air outlet groove.

In one embodiment, a liquid crystal touch screen is installed at the position of the touch panel, and the liquid crystal touch screen can be used as a secondary screen and also can be used as a traditional touch panel.

Compared with the prior art, the utility model discloses notebook computer make full use of A face and C face space has following advantage:

1. the mainboard area is big, and the components and parts dispersion, electrical interference is few, and the connector is few, and the reliability is high.

2. The external interface is complete, and the internal memory and the hard disk can be expanded.

3. The area of the heat dissipation system is large, the A-side shell body assists in heat dissipation, and the heat capacity of the system is large.

4. The heat dissipation system is approximately vertical, air convection is realized, and the heat dissipation performance is good.

5. The heat generating components are far away from the user, allowing high operating temperatures and good performance release.

6. The environment adaptability is strong, the heating is not generated when the mattress is placed on legs, and the air inlet is not blocked when the mattress is placed on a bed.

7. The battery has large capacity, is far away from heating components, and has long service life and good safety.

8. The thickness of the C surface is small, the height of the keyboard from the desktop is small, the key stroke is long, and the typing is comfortable.

9. The battery is arranged below the keyboard, so that sealing treatment is easy to carry out, and the liquid splashing prevention performance is good.

Drawings

Fig. 1 is an external view schematically showing a passive radiator type according to embodiment 1 of the present invention.

Fig. 2 is a schematic view of a-plane structure of a passive radiator type according to embodiment 1 of the present invention.

Fig. 3 is an appearance schematic diagram of an active heat sink type according to embodiment 2 of the present invention.

Fig. 4 is a schematic view of an a-plane structure of an active heat sink type according to embodiment 2 of the present invention.

Fig. 5 is a schematic view of the C-plane structure of the present invention.

Fig. 6 is a schematic diagram of a C-plane structure of the present invention.

Fig. 7 is a schematic view of the structure of the rotating shaft of the present invention.

Fig. 8 is a schematic view of the assembly of the rotating shaft of the present invention.

Figure 9 is the utility model discloses aerogel heat insulating membrane cross-section schematic diagram.

Fig. 10 is a schematic cross-sectional view of the graphite heat-conducting film of the present invention.

Fig. 11 is a schematic view of the a-side shell structure of the present invention.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings and examples.

According to industry practice, when setting forth the overall appearance of a notebook computer, the four faces thereof are typically referred to using a, B, C and D faces, each of which is specifically referred to. And when specific parts are specified, a-side shell, a C-shell and a D-shell are generally used, such as common publicity documents: the C shell is manufactured using a full CNC process. The side B is a screen, so the industry has no term of 'shell B'. Therefore, in the utility model, the A face, the B face, the C face, the D face, the A face casing, the C shell, the D shell all have unique definite meanings, and the A face is not equal to the A face casing. For example, the weight of the a-side described in the industry refers to the weight of the upper half of the part comprising the a-side shell, the screen, etc., while the weight of the a-side shell is the weight of only one aluminum alloy shell of the a-side.

On this basis, introduce the utility model discloses a concrete technical implementation.

As shown in fig. 1 to 11, the notebook computer with a new structure of the present invention mainly adopts the following new structure:

1. the main heating components: the main board 5 and the heat dissipation system 6 are arranged on the surface a 1.

2. The heat dissipation system 6 is in close contact with the surface a shell 2, and the surface a shell 2 is used for assisting in heat dissipation. The space of the A-side shell 2 is sufficient, so that the layout of the radiating components of the radiating system 6 is facilitated, and the scale of the radiating system 6 is enlarged conveniently. The A-side shell 2 assists in heat dissipation, so that the whole heat capacity is large, and the convection heat dissipation effect is good. Meanwhile, the radiating assembly is far away from the operation area, so that the influence on the comfort level of a user is small, and the use experience of the user is not influenced. In addition, the structure has large space for performance training, and temperature limitation can be even relaxed under the limit condition to improve the performance.

3. The battery 7 and the external interface 8 are placed on the C-plane 3 and connected with the main board 5 through cables, and obviously, the cables need to pass through a rotating shaft 9 of the notebook computer.

Therefore, the screen part of the notebook computer only comprises the mainboard 5 and the heat dissipation system 6, the battery 7 is placed in the keyboard area, the space is abundant, the layout is simple, the heat dissipation system 6 is large in scale, and the battery capacity is large. With the help of the structure advantage, the utility model discloses can provide performance, expanding power, the heat-sinking capability that is close the recreation originally under the volume and the weight of frivolous originally to improve duration by a wide margin, synthesize and use experience and be superior to traditional structure product.

In terms of specific data transmission and power supply connection, in the conventional notebook structure, the cable connecting the C-plane 3 and the motherboard 5 generally has: keyboard winding displacement, touch pad winding displacement, group battery winding displacement, speaker signal line, interface board winding displacement. The cable that the A face 1 passes through the rotating shaft 9 and is connected with the main board 5 generally comprises: display screen signal line, camera winding displacement, microphone winding displacement, wireless network card antenna.

The utility model discloses place mainboard 5 at A face 1, if design according to traditional mode, the winding displacement that needs to pass pivot 9 has following several kinds at least: keyboard winding displacement, touch pad winding displacement, two sets of battery winding displacements, speaker signal line, external interface winding displacement. The number of cables is large, the cables are difficult to penetrate through the two rotating shafts 9, and the arrangement of the external interface is too long, so that the data transmission speed is not favorable.

For solving the above problem, the utility model discloses interface board 19 and power control panel 17 have been designed at C face 3 for can only be connected with mainboard 5 through two cables.

As mentioned before, the interface board 19 corresponds to a TypeC docking station (TypeC interface can transmit data, audio, video, etc. signals). Various external interfaces, internal keyboard 20, touch pad 21, speaker 18 are connected to the interface board 19. The interface board 19 passes through the left spindle 9 through a standard TypeC cable to be connected with a TypeC interface on the main board 5.

The power supply control board 17 is responsible for charging and discharging the battery and supplying power to the whole machine, in the figure, the battery 7 is composed of a 3-core battery pack I15 and a 3-core battery pack II 16, the two 3-core battery packs are both connected to the power supply control board 17, and in some high-power machine types, an external power supply can also be connected to the power supply control board 17 through a power socket. The power supply control board 17 passes through the right rotating shaft 9 through a power supply cable to be connected with a power supply interface on the main board 5.

More specifically, a C-shell cable groove 24 with a diameter of 30mm x 4mm is formed in the C-shell 4 at the position of the rotating shaft 9, the inner hole diameter of the rotating shaft 9 is 7mm, and an a-face shell cable groove 22 with a diameter of 4mm is formed in the a-face shell 2 at the position of the rotating shaft 9. The cable firstly passes through the C-shell cable groove 24, bends 90 degrees at the inner hole 23 of the rotating shaft 9, enters the A-side shell 2 through the A-side shell cable groove 22 and is connected with the main board 5.

And measuring a TypeC docking bay object, wherein the diameter of the TypeC cable is 3.5mm. The method is used for measuring a 120w notebook computer power supply object, the diameter of a power supply cable is 3.2mm, the width of a battery assembly joint in the notebook computer is 22mm, and the thickness of the battery assembly joint is 3mm. Can smoothly pass through each hole groove.

Thus, the C-plane 3 and the a-plane 1 are connected by two cables, which reduces the number of connectors and improves reliability. Meanwhile, the external interfaces which are frequently plugged and unplugged are all on the independent interface board 19, so that the maintenance cost can be reduced.

Based on the foregoing structure, in the specific embodiment 1 of the present invention, a structure of a passive heat sink type is provided, as shown in fig. 1 and fig. 2, in the structure, a main board 5 is located below an a-side housing 2 of a notebook computer, the height is only 80mm, and most of the rest area of the a-side housing 2 is used as a heat dissipation area 10. The heat dissipation system 6 uses a T-shaped soaking plate 11 as a heat dissipation component, one end of the T-shaped soaking plate 11 is in close contact with a CPU heating core, the other end of the T-shaped soaking plate 11 is in close contact with a heat dissipation area 10 of the A-surface shell 2, heat conduction efficiency is improved by coating heat conduction silicone grease, the A-surface shell 2 is designed into a step shape, so that the height of the heat dissipation area 10 is consistent with that of the T-shaped soaking plate 11, and the compressive strength of the A-surface shell 2 is improved. The heat dissipation area on the inner surface of the A-surface shell 2 can be covered with a graphite heat conduction film, so that the heat of the T-shaped soaking plate 11 can be quickly diffused, and the inner surface and the outer surface are utilized to dissipate heat at the same time. During normal use, A face casing 2 is close perpendicular, accords with hot-air convection rule, and the radiating effect is good.

Exemplarily, the passive heat sink model adopts the specifications:

13 inch 3;

3 TypeC,1 USB-A,1 HDMI,1 TF card slot and 1 earphone interface;

size 286 x 210 x 15mm, weight 1028g, battery 54wh, keyboard key stroke 1.5mm.

The power consumption of the passive cooling system 6 under the specification is estimated:

dimension of the heat dissipation part of the a-side housing 2: 130 x 280mm, surface area: 0.036 square meter.

Assuming that the ambient temperature is 25 degrees, the a-side housing 2 is far from the user, allowing the operating temperature to be high, set at 55 degrees.

The natural convection heat dissipation coefficient of air is 5-25, the air flowability of the inner surface of the A-surface shell 2 is poor, the coefficient is 5, and the heat dissipation coefficient of the outer surface is 10. Total heat dissipation capacity: 0.036 + 30 (+10) =16.2w

Compared with a passive radiator model with a traditional structure (for example, the passive radiator model is monewood x):

13 inch 3;

2 typecs, 1 earphone interface;

size 284 x 206 x 13.6mm, weight 1000g, battery 42wh, keyboard stroke 1.3mm.

Compared with a machine type, the large-area vapor chamber is used for passive heat dissipation, and the area of the vapor chamber is limited because the main parts are on the C surface 3. When the computer is used, the soaking plate is in a horizontal state, and the mainboard 5, the keyboard 20 and other parts are covered on the soaking plate, so that the hot air flowability is poor. From the practical use effect, the release of the performance of a comparison machine type is weaker, the total power can only be maintained at 5-8w, and the heat generation of the machine body is serious.

Therefore, the passive radiator is silent, light, thin, portable, good in endurance, complete in external interface and good in internal expansibility.

Based on the foregoing structure, the embodiment 2 of the present invention provides an active heat sink type structure, as shown in fig. 3 and 4, in the active heat sink type structure, the main board 5 is also located below the a-side housing 2 of the notebook computer, and the heat dissipation system 6 uses the heat pipe 13, the fins 14, and the fan 12 as the heat dissipation component. The heat pipe 13 linearly penetrates heat generating components such as a CPU, a GPU, a memory, and the like on the motherboard 5. The fins 14 are welded on the heat pipe 13, are in close contact with the inner surface of the A-surface shell 2, can be coated with heat-conducting silicone grease to improve the heat-conducting efficiency, and utilize the A-surface shell 2 to assist in heat dissipation to increase the heat capacity of the system. The auxiliary heat dissipation area of the A-side shell 2 can be covered with a graphite heat conduction film. The inner surface of the A-surface shell 2 is provided with reinforcing ribs 34 along the contours of the fan 12 and the main plate 5 for increasing the strength. The bottom part is provided with an air inlet groove 35, and the upper part is provided with an air outlet groove 31, so that the hot air convection rule is met. Cold air enters from the bottom and can cool the hard disk, the memory, the south bridge and the like.

Illustratively, the active heat sink model adopts the specifications:

14 inch 3 screen, moving a marking CPU, an independent display card, two memory slots and two hard disk slots;

3 type C,1 USB-A,1 HDMI,1 TF card slot and 1 earphone interface;

size 312 × 227 × 17.5mm, weight 1427g, battery 75wh, keyboard key stroke 1.8mm.

The power consumption of the active cooling system 6 under the specification is estimated:

the active heat dissipation system 6 uses two 6mm heat pipes 13 connected in parallel, the heat generating component is in the middle of the heat pipe 13, the steam is diffused to the two ends at the same time, and the heat conduction power is equivalent to 4 heat pipes.

The heat conduction power of the heat pipe 13 is proportional to the sectional area and is affected by the flattened thickness of the heat pipe. The smaller the flattening thickness, the smaller the power-to-area ratio. According to data obtained by actually measuring an active radiator model (mathebook 13) with a traditional structure: 8mm heat pipe is flattened to 1.3 × 11.8mm, heat conduction power 22w, power area ratio: 1.43. the 6mm heat pipe is flattened to 1.5 × 8.5mm, the flattened thickness is larger than mathebook 13, the power area ratio is at least not lower than 1.43, and the heat conduction power of the single heat pipe is 1.5 × 8.5 × 1.43=18.23w calculated according to 1.43. Total heat transfer power: 18.23 × 4=72.92w. The forced convection heat exchange coefficient of the air is 20-300.

The size, thickness and fan size of the notebook computer body are close to the glowing magicbook v14, and the heat exchange coefficient can be reversely deduced:

the environment temperature is 25 ℃, the working temperature of the heat dissipation system 6 is 55 ℃, the magicbook v14 total power is 45w, and the fin area is 22000mm2. Heat transfer coefficient: 45/(0.02230) =68, the conservative value is 60.

The active cooling system 6 has the radiator size of 27 × 4 × 150mm, the thickness of the fins is 0.1mm, the interval is 1mm, and 138 fins are used in total.

Fin area 27 x 4 x 2 + 138+27 x 150 x 2=37908mm2.

Total heat dissipation power: 0.0379 × 30 × 60=68.22w.

Compare traditional structure initiative radiator model (magicbook v 14):

14 inch 3 screen, moving a marking CPU, an independent display card, carrying on board and a single hard disk slot;

2 type C,1 USB-A,1 HDMI and 1 earphone interface;

size 310 × 226 × 15.8mm, weight 1480g, battery 60wh, keyboard stroke 1.5mm.

The area of the fins is 22000mm, and the total heat dissipation power is 45w.

Therefore, the active radiator type of the embodiment achieves higher performance release by using lighter and thinner size and weight of the body with the advantages of a new structure, and has excellent cruising ability, internal expansion ability, complete external interfaces and good use experience.

The utility model discloses in, the C face 3 structure of the different models of the same size is the same, can be general, as shown in fig. 5, 6, and the part of arranging mainly includes battery 7, interface board 19, power control panel 17, keyboard 20, touch pad 21, speaker 18 etc.. In a specific embodiment, the battery 7 may adopt two 3-core battery packs, and is respectively connected to the power control board 17, and the power control board 17 is responsible for charging and discharging the battery 7 and supplying power to the whole device, and is connected to the power supply interface on the main board 5 through a cable. The external interface 8, the keyboard 20, the touch pad 21, the speaker 18, the earphones and the like are all connected to the interface board 19, the interface board 19 adopts a type C docking station architecture, serves as a type C expansion device, and is connected with a type C interface on the main board 5 through a standard type C cable.

In the structure of the touch pad 21, the traditional notebook computer touch pad has a single function, and some models use the touch pad to realize auxiliary functions such as a numeric keypad and the like at present, but the touch pad is a pure touch positioning device in nature.

The utility model discloses new construction notebook computer need not arrange cooling system 6 at the fuselage rear portion, and keyboard 20 can be close to the screen, leaves bigger space for touch pad 21. The size of the 14-inch model touch panel reaches 135 × 85mm, and the area of the 14-inch model touch panel is close to that of a smart phone screen. The liquid crystal touch screen can be arranged at the position of the touch pad 21 and used as a secondary screen, so that more interaction modes are realized, the interaction capacity of the notebook computer and a user is greatly improved, and the function of the touch pad is still kept. The auxiliary screen is connected with the interface board 19 in a manner of TypeC expansion equipment, and the technology is simple and mature.

Theoretically, adopt above-mentioned new construction, probably bring following problem, the utility model provides a corresponding solution for it:

1. the increased weight of the a side causes balance problems.

To solve this problem, in an embodiment of the present invention, the a-side shell 2 may be made of magnesium alloy or carbon fiber to reduce weight; the components of the a-side 1, such as the motherboard 5 and the heat dissipation system 6, are as low as possible to lower the center of gravity; the C-side 3 may be weighted in such a manner that the capacity of the battery is increased, for example, a plurality of battery packs may be provided, and the weight of the C-side 3 may be increased by increasing the capacity of the battery.

In summary, by the measures, the aim is to enable the weight of the C surface 3 and the weight of the A surface 1 to meet the condition that when the A surface 1 is unfolded to 180 degrees in the working state, the stabilizing moment provided by the C surface 3 is larger than the overturning moment of the A surface 1, the gravity center position of the whole notebook computer is located in the range of the foot pad of the C surface 3, and finally the notebook computer is kept in balance.

Taking a 14-inch model as an example, modeling measurement is carried out in solidworks:

the weight of the surface A is 610g, the distance between the gravity center and the rotating shaft 9 is 104mm, the weight of the surface C is 793g, and the distance between the gravity center and the rotating shaft 9 is 113mm. When the A surface 1 is unfolded to 180 degrees, the gravity center is positioned on the C surface 3 and is 22mm away from the edge of the C surface 3, and balance can be kept.

Calculating the screen shaft torque:

the screen shaft torque safety factor is 1.2, the torque is attenuated by 20%, and the single screen shaft torque is as follows:

(0.61*10.4*1.2)/(1-0.2)/2＝4.758kg/cm

in order to reduce the weight of the whole machine, other parts of the C surface 3, such as the C shell 4, the keyboard 20, the board card, the loudspeaker 18 and the like, are designed to be light as much as possible. In order to balance the weight of the a-side 1, the weight (capacity) of the battery 7 may be increased.

Data of the battery:

dell 5290, battery capacity: 42wh, weight: 170g, weighing 4.05 grams per watt hour.

dell 7610, battery capacity: 86wh, weight: 340g, 3.95 grams per watt hour.

lg gram14, battery capacity: 72wh, weight: 269g, 3.74 grams per watt hour.

The battery promotion of lg gram14 is based on carbon nanomaterials and therefore is light in weight, with a conservative weight of 4.05 grams per watt hour being used in the calculation.

2. The weight of the surface A1 is increased, the torque of the rotating shaft 9 is large, and the surface A can not be opened and closed by one hand.

This problem is difficult to avoid, and in order to solve this problem, on the one hand, the one-hand opening and closing function is not necessary, and therefore it is conceivable to dispense with this function, and on the other hand, it is possible to improve it by using a variable torque shaft.

The torque-variable rotating shaft of the notebook computer is a mature product, taking a wrapping type rotating shaft 9 as an example, a shaft core is wrapped by a semicircular shaft sleeve, and torque is provided by the friction force between an elastic shaft sleeve and the shaft core. Varying the size and elasticity of the bushing provides different torques.

When the shaft core is a precise cylinder, the shaft core rotates in the shaft sleeve at different angles and is basically consistent with the friction force of the shaft sleeve, so that constant torque is provided.

When the shaft core is an eccentric cylinder, the friction force between the shaft core and the shaft sleeve is changed along with the rotation angle, so that variable torque is provided.

The application of the variable-torque rotating shaft on the notebook aims to provide smaller torque when the rotating shaft 9 is at the initial position, so that the A surface 1 is convenient to open, and provide larger torque when the A surface 1 rotates to the use position, so as to stabilize the screen.

3. The screen operating temperature is high.

To solve this problem, a high temperature resistant screen may be used; an aerogel heat insulation film and a graphite heat conduction film are covered on the screen back plate, so that local overheating is avoided; the surface of the heat dissipation component of the heat dissipation system 6 can be covered with a heat insulation film, so that the heat dissipation in the machine body is reduced.

The aerogel heat insulation film is a product of Gore company in America, the thickness of the aerogel heat insulation film is 0.12mm, and the heat conductivity coefficient of the aerogel heat insulation film is 0.021w/mk. The heat conductivity coefficient of the heat conduction plate is lower than that of air, and the heat conduction plate covers the back plate of the screen, so that heat of a heat source can be delayed from being transferred to the screen. Structure of aerogel thermal insulation film referring to fig. 9, the aerogel thermal insulation film includes a first protective layer 24, an aerogel layer 25, an adhesive layer 26, and a first substrate 27 from top to bottom.

The graphite heat-conducting film is widely applied to electronic products such as mobile phones, notebooks and the like. The thickness of the material is 0.1-0.05mm, the heat conductivity coefficient of XY axis can reach 1500w/mk, and the heat conductivity coefficient of Z axis is about 20w/mk. The heat-insulating layer covers the screen backboard, so that the heat of the point heat source can be uniformly distributed to the whole screen backboard, and a certain heat-insulating capacity is provided in the thickness direction. Structure of graphite heat conducting film referring to fig. 10, the second protective layer 28, the graphite layer 29 and the second substrate 30 are included from top to bottom.

4. The devices on the main board 5 may conflict with the screen control circuit board.

In order to solve the problem, components with high thickness on the main board 5 need to be reasonably arranged, and a space is reserved for the screen control circuit board; alternatively, the screen may be customized, and the screen control circuit board may be placed on the main board 5.

The thicker components on the motherboard 5 are as follows:

1) Memory slot: the installation height is 3.7mm

2) Heat pipe and base plate: the installation height is 3.5mm

3) Single-sided m.2 solid state disk: the installation height is 2.78mm

The distance between each device and the screen backboard has been considered when the design to 2 thickness of A face casing to 14 cun models for the example, mainboard 5 and screen backboard distance 4.5mm are enough to hold the components and parts on mainboard 5 to leave certain buffer space.

The liquid crystal screen control circuit board is positioned below the liquid crystal screen and is in a slender strip shape. As can be seen from the structure diagram of the A surface 1, the thickest internal storage groove, the heat pipe and other parts on the main board 5 are all positioned at the middle upper part of the A surface shell 2 and do not conflict with the liquid crystal screen control circuit board.

5. The shell 2 on the A surface has high requirements on torsional strength and compressive strength.

To solve this problem, in one embodiment, a rib 34 is formed on the inner surface of the a-side housing 2; the main board 5 adopts a high-strength PCB, and a high-strength engineering plastic frame can be arranged to increase the strength of the main board 5; the fixing points of the A-side shell 2 and the main board 5, the heat pipe bottom board and the like are increased to increase the overall strength. The fan 12 is mounted through the fan mounting hole 32 and the main board 5 is mounted through the main board mounting hole 33, as shown in fig. 11.

It follows that the above problems are all solved under the state of the art. On the basis of the above solutions, problems 1 to 4 are all related to the screen, and can be further solved by adopting an OLED screen which is light in weight, small in thickness and high in temperature resistance.

The utility model discloses size, thickness, weight, battery capacity, heat dissipation part parameter etc. of aforementioned each model are measured after modeling each part in solidworks and are obtained. Main components such as a shell, a screen, a main board, a heat pipe, a fin, a fan, a battery, a keyboard, a touch panel and the like are modeled according to material data, and the modeling is accurate. Small parts such as chips, hard disks, speakers, interfaces and the like are modeled as much as possible according to the real weight volume according to the collected data. Some tiny parts are not included, such as cameras, microphones, cables, connectors, screws, etc., and thus the weight may be subject to certain errors. Wherein 6061 aluminum alloy is used for the housing member, and if magnesium alloy is used, the weight is further reduced.

The data and formulas used for calculating the performance of the heat dissipation system are partly from articles for discussing the heat dissipation system, partly obtained by measuring the existing model and partly model parameters released by manufacturers. The calculation method mainly adopts the existing data to carry out induction analysis according to the principle of a heat dissipation system, wherein certain errors are certainly existed, and the values of all parameters are conservative in order to explain the problems.

The utility model discloses new construction notebook computer's fuselage area, weight and traditional structure model are level basically, and thickness is thicker than traditional structure model slightly, has nevertheless traded promoting by a wide margin of battery capacity, and the main factor that influences the portability is fuselage area, weight, duration, and thickness is not big to the portability influence.

It can be seen from the above comparison data that the passive radiator type or the active radiator type has greater advantages than the traditional structure type in the aspects of performance release, heat dissipation capability, cruising capability, internal expansion capability, external interface, use experience and the like. The design of the notebook computer does not adopt a high-precision technology and components, the notebook computer is improved based on the mature technology of the notebook computer with the traditional structure, and the production cost and the maintenance cost are basically consistent with those of the notebook computer with the traditional structure.

Claims

1. The notebook computer with the new structure is characterized in that a mainboard and a heat dissipation system are arranged on the surface A; the battery and the external interface are arranged on the C surface and are connected with the main board only through two cables, and the cables penetrate through a rotating shaft of the notebook computer; the heat dissipation system is in close contact with the A-side shell so as to utilize the A-side shell to assist in heat dissipation;

the interface board is arranged on the C surface, the interface board adopts a TypeC docking bay framework, the external interface, a keyboard, a touch pad and a loudspeaker of the notebook computer are connected with the interface board, and the interface board penetrates through a rotating shaft on one side of the notebook computer through a standard TypeC cable to be connected with a TypeC interface on the main board; the battery is connected with a power supply control panel, and the power supply control panel passes through a rotating shaft on the other side of the notebook computer through a power supply cable and is connected with a power supply interface on the main board;

the inner surface of the A-side shell of the notebook computer is provided with a reinforcing rib;

the main board is positioned below an A-side shell of the notebook computer, the heat dissipation system takes a T-shaped vapor chamber as a heat dissipation component, one end of the T-shaped vapor chamber is tightly contacted with a CPU heating core, the other end of the T-shaped vapor chamber is tightly contacted with a heat dissipation area of the A-side shell, and the A-side shell is in a step shape, so that the height of the heat dissipation area is consistent with that of the T-shaped vapor chamber;

the main board is positioned below the A-side shell of the notebook computer, the heat dissipation system takes heat pipes, fins and fans as heat dissipation components, and the heat pipes linearly penetrate through heating components on the main board; the fins are welded on the heat pipe and are in close contact with the inner surface of the A-side shell; and the bottom of the A-side shell is provided with an air inlet groove, and the upper part of the A-side shell is provided with an air outlet groove.

2. The notebook computer with new structure as claimed in claim 1, wherein the main board and the heat dissipation system are located at the lower part of the arrangement position of the A surface to lower the center of gravity; when the weight of the C surface and the weight of the A surface meet the condition that the A surface is unfolded to 180 degrees, the stabilizing moment provided by the C surface is larger than the overturning moment of the A surface, and the gravity center position of the whole notebook computer is located in the range of the foot pad of the C surface, so that the notebook computer keeps balance.

3. The notebook computer of claim 2, wherein there are multiple sets of batteries.

4. The notebook computer with the new structure as claimed in claim 1, wherein the notebook computer adopts a variable torque rotating shaft.

5. The notebook computer with new structure as claimed in claim 1, wherein the back panel of the notebook computer is covered with aerogel heat insulation film and graphite heat conduction film.