Vehicle-mounted tablet personal computer with safety voltage protection

Abstract

The invention relates to the technical field of vehicle-mounted application, in particular to a vehicle-mounted tablet personal computer with safety voltage protection, which comprises a computer body, a slot, a copper sheet, a protection mechanism and a lifting mechanism, the slot is positioned on the left side of the back of the computer body, the lifting mechanism is positioned on the inner side of the slot, and the protection mechanism is detachably mounted on a lifting seat of the lifting mechanism. The protection mechanism is used for achieving a voltage protection effect on the computer body, the copper sheet is fixedly installed on the inner side of the inserting groove, the protection mechanism comprises a shell, a control mechanism and a voltage adjusting mechanism, and the shell is detachably installed on the lifting base. According to the vehicle-mounted tablet computer with the safety voltage protection function, through an automatic adjusting structure of the heat dissipation mechanism, mercury liquid can drive a baffle to rotate according to temperature changes, a ventilation opening of a dust cover is opened or closed, and therefore the dust prevention and heat dissipation effects on a fixed resistor and a variable resistor are achieved; therefore, the voltage protection effect and the service life of the vehicle-mounted tablet computer are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted applications, and in particular to a vehicle-mounted tablet computer with safety voltage protection. Background Art

[0002] The in-car tablet computer is a tablet device specially designed for the car environment. By integrating multiple functions into one device, it reduces the number of devices in the car, makes the car more tidy, facilitates the driver's operation, and improves driving safety and convenience.

[0003] After searching, Chinese patent announcement number: CN114415812B discloses a vehicle-mounted tablet computer with safety voltage protection. Through the setting of variable resistors, the control system in the wide voltage module can change the resistance value of the variable resistor according to the voltage across the variable resistor, so that the current flowing through the output line is adapted to the computer and remains stable, preventing the computer from being in an overvoltage state for a long time. When the adapter adapted to the computer suddenly loses power, the lithium battery in the wide voltage module can power the computer, facilitating the use of the computer.

[0004] During the use of the above device, the position of the moving ring is adjusted by sliding the moving ring along the outer wall of the connecting rod, thereby adjusting the resistance value of the variable resistor. However, when the moving ring slides along the outer wall of the connecting rod for a long time, wear will occur between the connecting rod and the moving ring, resulting in poor contact between the connecting rod and the moving ring, which causes the variable resistor to be unable to be used normally. In addition, during long-term use, foreign particles such as dust from the outside enter the box body and adhere to the two ends of the fixed resistor, which will affect the accuracy of the voltage meter measuring the voltage at both ends of the fixed resistor. In addition, the variable resistor and the fixed resistor are prone to generate more heat in the hot summer environment, causing the resistance value of the fixed resistor and the variable resistor to change, and at the same time affecting the voltage protection effect and service life of the vehicle-mounted tablet computer. Therefore, it is necessary to design a vehicle-mounted tablet computer with safe voltage protection, which can make the variable resistor and the slider have good contact, and can also play a dustproof or heat dissipation role for the fixed resistor and the variable resistor, so as to avoid the influence of dust or high temperature from the outside on the resistance value and service life of the fixed resistor and the variable resistor. Summary of the invention

[0005] The object of the present invention is to provide a vehicle-mounted tablet computer with safety voltage protection.

[0006] To achieve this object, the present invention adopts the following technical solutions: Provided is a vehicle-mounted tablet computer with safe voltage protection, comprising a computer body, a slot, a copper sheet, a protection mechanism and a lifting mechanism, wherein the slot is located on the left side of the back of the computer body, the lifting mechanisms are all located on the inner side of the slot, the protection mechanism can be installed and removed on a lifting seat of the lifting mechanism, the protection mechanism is used to provide voltage protection for the computer body, the copper sheet is fixedly installed on the inner side of the slot, the protection mechanism comprises a shell, a control mechanism and a voltage regulating mechanism, the shell can be installed and removed on the lifting seat, the control mechanism is located on the inner side of the shell and is used to control the voltage regulating mechanism, the voltage regulating mechanism is located on the top of the control mechanism and is used to adjust the output voltage to the computer body, the voltage regulating mechanism comprises a heat dissipation mechanism and a variable resistance mechanism, the heat dissipation mechanism is located on the inner side of the shell and is used to dissipate heat or prevent dust from the variable resistance mechanism, the variable resistance mechanism is located on the inner side of the heat dissipation mechanism and is used to adjust the resistance value, thereby adjusting the output voltage to the computer body, the heat dissipation mechanism comprises a dust cover, two sliding rods and eight baffles, the dust cover is located on the top of the control mechanism, the two sliding rods are located on the inner side of the dust cover, and the eight baffles are hinged to both sides of the inner wall of the dust cover.

[0007] Furthermore, the lifting mechanism includes an I-shaped plate, a support rod, a support block, a torsion spring and a pressing plate. The support block is fixedly installed on the inner bottom of the slot, the I-shaped plate is rotatably connected to the inner side of the support block, the outer wall of the I-shaped plate is hinged to the support rod, one end of the torsion spring is fixedly connected to the inner side of the support block, and the other end of the torsion spring is fixedly installed on the outer wall of the I-shaped plate. A groove is provided on the inner side of the slot, a long groove is provided on the inner side of the slot, and the pressing plate is slidably connected to the inner side of the long groove.

[0008] Furthermore, the control mechanism includes a control box, an electric control switch and a wire. The control box is fixedly installed on the inner bottom of the shell. A control system and a battery are provided on the inside of the control box. The electric control switch is electrically connected to the control box. Two through holes are opened on the front of the shell. One end of the wire is electrically connected to the control box, and the other end of the wire is fixedly installed on the inner side of a through hole.

[0009] Furthermore, the voltage regulating mechanism also includes a connecting wire, a fixed resistor, a voltmeter and a miniature camera, one end of the connecting wire is electrically connected to the fixed resistor, the other end of the connecting wire is fixedly installed on the inner side of another through hole, the outer wall of the fixed resistor is fixedly installed on the inner side of the dust cover, the voltmeter is fixedly installed on the top of the dust cover, two wires are arranged on the voltmeter, the two wires are fixedly connected to the two ends of the fixed resistor, and the miniature camera is fixedly connected to the inner side of the shell.

[0010] Furthermore, the heat dissipation mechanism also includes a cylindrical rod, two oblique rods, two connecting rods, eight sealing gaskets, eight hinged rods and eight sliders. The cylindrical rod is fixedly installed on the inner front side of the dust cover, the inner wall of the cylindrical rod is slidably connected to the sliding rod, one end of each oblique rod is hinged to each sliding rod, the other end of each oblique rod is hinged to each connecting rod, each connecting rod passes through and is fixedly connected to the top of four sliders, each slider is hinged to each hinged rod, each hinged rod is hinged to the outer wall of each baffle, eight sliding grooves are provided on the inner top of the dust cover, each slider is slidably connected to the inner side of each sliding groove, four vents are provided on the left and right sides of the dust cover, each sealing gasket is fixedly installed on the inner side of each vent, the outer wall of the sliding rod is provided with a spring, one end of the spring is fixedly connected to the inner side of the cylindrical rod, the other end of the spring is fixedly connected to the sliding rod, the inner side of the cylindrical rod is filled with mercury liquid, and the dust cover is fixedly installed on the top of the control box.

[0011] Furthermore, the variable resistance mechanism includes a box body, a variable resistor, an output line, a guide rod, an electric push rod, a moving block, a slide, a fixed rod and an elastic telescopic rod. The box body is fixedly installed on the inner bottom of the dust cover, the outer wall of the variable resistor is electrically connected to the fixed resistor, the variable resistor is fixedly installed on the inner side of the box body, the guide rod is fixedly installed on the inner side of the box body, the guide rod is electrically connected to the output line, the output line passes through the box body, the dust cover and the back side of the shell and contacts the copper sheet, the moving block is slidably connected to the guide rod, the moving block is electrically connected to the guide rod, the fixed rod is fixedly installed on the moving block, the fixed rod is electrically connected to the moving block, the slide can be slidably installed on the fixed rod, the outer wall of the slide is in contact with the variable resistor, the slide is electrically connected to the variable resistor and the fixed rod, one end of the elastic telescopic rod is fixedly connected to the moving block, the other end of the elastic telescopic rod is fixedly installed on the slide, one end of the electric push rod is fixedly connected to the inner side of the box body, and the other end of the electric push rod is fixedly installed on the moving block.

[0012] Furthermore, the protection mechanism also includes a cover plate, the outer wall of the cover plate is provided with multiple groups of heat dissipation holes, and the side wall of the computer body is provided with a wiring groove, which is in contact with the wires and the connecting wires.

[0013] Furthermore, the lifting assembly also includes an assembly and disassembly mechanism, which includes a wedge block, a clamping block, a return spring and a top plate. The lifting seat is a top plate, which can be slidably installed on the inner side of the slot, and the bottom of the top plate is hinged to the support rod. The wedge block can be slidably installed on the inner side of the top plate, and the clamping block is fixedly installed on the outer wall of the wedge block. The clamping block can be slidably installed on the top of the top plate, one end of the return spring is fixedly connected to the inner side of the top plate, and the other end of the return spring is fixedly connected to the outer wall of the wedge block. A clamping slot is provided at the bottom of the shell, and the outer wall of the clamping block is clamped with the inner wall of the clamping slot, and the outer wall of the wedge block is clamped with the inner wall of the long slot.

[0014] The beneficial effects of the present invention are as follows: the vehicle-mounted tablet computer with safe voltage protection can quickly install the shell in the slot through the detachable structure of the lifting mechanism, and can automatically push out when the shell is disassembled for easy access by the staff, and the automatically adjustable structure of the heat dissipation mechanism can drive the baffle to rotate according to the change of temperature, and open or close the vent of the dust cover, so as to realize dust prevention and heat dissipation of the fixed resistor and the variable resistor, and at the same time, through the elastic telescopic rod in the variable resistor mechanism, the sliding piece is always in good contact with the variable resistor, which further improves the detection accuracy of the voltmeter and the accuracy of the voltage adjustment of the vehicle-mounted tablet computer, thereby improving the voltage protection effect and service life of the vehicle-mounted tablet computer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments of the present invention are briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional rear view structure of the present invention; Figure 3 It is a schematic diagram of the top view of the structure of the computer body of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the lifting mechanism of the present invention; Figure 5 It is a schematic diagram of the top plate split structure of the present invention; Figure 6 It is a schematic diagram of the support block split structure of the present invention; Figure 7 This is a schematic diagram of the structure of the cover plate of the present invention in an open state; Figure 8 It is a schematic diagram of the cross-sectional structure of the dust cover of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the heat dissipation assembly of the present invention; Fig.10 For the present invention Fig. 9 The enlarged structural diagram of part A in the middle; Fig.11 It is a schematic diagram of the disassembly structure of the sliding rod of the present invention; Fig.12 It is a schematic diagram of the slide splitting structure of the present invention.

[0017] In the figure: 1, computer body; 2, slot; 3, copper sheet; 4, protective mechanism; 4a, shell; 4b, cover plate; 4c, control mechanism; 4c1, control box; 4c2, electric switch; 4c3, wire; 4d, voltage regulating mechanism; 4d1, connecting wire; 4d2, heat dissipation mechanism; 4d21, cylindrical rod; 4d22, sliding rod; 4d23, inclined rod; 4d24, connecting rod; 4d25, sealing gasket; 4d26, baffle; 4d27, hinged rod; 4d28, slider; 4d29, dust cover; 4d3, variable resistance mechanism; 4d3 1. Box body; 4d32. Variable resistor; 4d33. Output line; 4d34. Guide rod; 4d35. Electric push rod; 4d36. Moving block; 4d37. Slide; 4d38. Fixed rod; 4d39. Elastic telescopic rod; 4d4. Fixed resistor; 4d5. Voltmeter; 4d6. Miniature camera; 5. Lifting mechanism; 5a. Assembly and disassembly mechanism; 5a1. Wedge block; 5a2. Card block; 5a3. Reset spring; 5a4. Top plate; 5b. I-shaped plate; 5c. Support rod; 5d. Support block; 5e. Torsion spring; 5f. Press plate. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0019] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0020] Reference Figures 1 to 5The vehicle-mounted tablet computer with safe voltage protection shown in the figure comprises a computer body 1, a slot 2, a copper sheet 3, a protection mechanism 4 and a lifting mechanism 5. The slot 2 is located on the left side of the back of the computer body 1. The slot 2 is used to install a shell 4a, so that the computer body 1 can have a voltage protection effect. The lifting mechanism 5 is located on the inner side of the slot 2. The shell 4a can be driven to slide vertically along the inner wall of the slot 2 through the lifting mechanism 5, so that the shell 4a can be pushed out of the slot 2 or fixed on the inner wall of the slot 2. The protection mechanism 4 can be installed and removed on the lifting seat of the lifting mechanism 5. The protection mechanism 4 is used to protect the computer body 1 from voltage. When the voltage When the voltage of the computer body 1 is lower than or higher than the rated voltage, the voltage of the computer body 1 is adjusted by the protection component 4 to achieve voltage protection. The copper sheet 3 is fixedly installed on the inner side of the slot 2. By energizing the copper sheet 3, power can be transmitted to the computer body 1. The protection mechanism 4 includes a shell 4a, a control mechanism 4c and a voltage regulating mechanism 4d. The shell 4a can be installed and removed on the lifting seat. The control mechanism 4c is located on the inner side of the shell 4a and is used to control the voltage regulating mechanism 4d. The control mechanism 4c can collect voltage information and send signals to control the voltage regulating mechanism 4d to work. The voltage regulating mechanism 4d is located on the top of the control mechanism 4c and is used to adjust the voltage of the computer body 1. The output voltage of the main body 1 is adjusted by adjusting the resistance value of the variable resistor 4d32 through the adjusting mechanism 4d to achieve voltage regulation. The voltage regulating mechanism 4d includes a heat dissipation mechanism 4d2 and a variable resistor mechanism 4d3. The heat dissipation mechanism 4d2 is located inside the housing 4a and is used to dissipate heat or prevent dust from the variable resistor mechanism 4d3. At the same time, it can also play a role in heat dissipation and dust prevention for the fixed resistor 4d4, thereby improving the accuracy of voltage detection and regulation. The variable resistor mechanism 4d3 is located inside the heat dissipation mechanism 4d2 and is used to adjust the resistance value, thereby adjusting the output voltage of the computer main body 1. The variable resistor mechanism 4d3 can improve the contact efficiency between the variable resistor 4d32 and the slider 4d28. The heat dissipation mechanism 4d2 comprises a dust cover 4d29, two sliding rods 4d22 and eight baffles 4d26. The dust cover 4d29 is located at the top of the control mechanism 4c. The dust cover 4d29 can prevent dust from entering the fixed resistor 4d4 and the variable resistance mechanism 4d3. The two sliding rods 4d22 are located on the inner side of the dust cover 4d29. The eight baffles can be driven to flip at the same time through the two sliding rods 4d22. The eight baffles 4d26 are hinged to the inner wall of the dust cover 4d29 on both sides. The ventilation opening of the dust cover 4d29 can be opened or closed by the rotation effect of the eight baffles 4d26.

[0021] The lifting mechanism 5 includes an I-shaped plate 5b, a support rod 5c, a support block 5d, a torsion spring 5e and a pressing plate 5f. The support block 5d is fixedly installed at the inner bottom of the slot 2. The fixing effect of the support block 5d prevents the support block 5d from falling off. The I-shaped plate 5b is rotatably connected to the inner side of the support block 5d. The rotation effect of the I-shaped plate 5b can drive the support rod 5c to move. The outer wall of the I-shaped plate 5b is hinged to the support rod 5c. The movement effect of the support rod 5c can drive the I-shaped plate 5b to move. The plate 5b rotates, one end of the torsion spring 5e is fixedly connected to the inner side of the support block 5d, and the other end of the torsion spring 5e is fixedly installed on the outer wall of the I-shaped plate 5b. Through the elastic force of the torsion spring 5e, the I-shaped plate 5b can always keep driving the I-shaped plate 5b to rotate upward without being affected by external force. A groove is provided on the inner side of the slot 2, and a long groove is provided on the inner side of the slot 2. The pressing plate 5f is slidably connected to the inner side of the long groove. By squeezing the pressing plate 5f, the staff can press the wedge block 5a1.

[0022] The control mechanism 4c includes a control box 4c1, an electric control switch 4c2 and a wire 4c3. The control box 4c1 is fixedly installed on the inner bottom of the shell 4a. The fixing effect of the control box 4c1 prevents the control box 4c1 from falling off. A control system and a battery are arranged on the inner side of the control box 4c1. The control system collects the image taken by the micro camera 4d6 for analysis, and then controls the electric push rod 4d35 to move. The battery is electrically connected to the output line 4d33 through the electric control switch 4c2, and the electric control switch 4c2 is electrically connected to the control box 4c1. When the wiring slot is powered off, the control system can control the electric control switch 4c2 to turn on, so that the battery is connected to the output line 4d33. Two through holes are opened on the front side of the shell 4a. One end of the wire 4c3 is electrically connected to the control box 4c1, and the other end of the wire 4c3 is fixedly installed on the inner side of a through hole. Electricity is transmitted to the battery through the wire 4c3, thereby charging the battery.

[0023] The voltage regulating mechanism 4d also includes a connecting wire 4d1, a fixed resistor 4d4, a voltmeter 4d5 and a micro camera 4d6. One end of the connecting wire 4d1 is electrically connected to the fixed resistor 4d4, and the other end of the connecting wire 4d1 is fixedly installed on the inner side of another through hole. Electric power is transmitted to the fixed resistor 4d4 through the connecting wire 4d1. The outer wall of the fixed resistor 4d4 is fixedly installed on the inner side of the dust cover 4d29. The fixed resistor 4d4 is prevented from falling off by the fixing effect of the fixed resistor 4d4. The voltmeter 4d5 is fixedly installed on the top of the dust cover 4d29. Two wires are arranged on the voltmeter 4d5, and the two wires are fixedly connected to the two ends of the fixed resistor 4d4. A display screen is arranged on the voltmeter 4d5. The voltage at the two ends of the fixed resistor 4d4 is detected by the voltmeter 4d5 and the detection result is displayed on the display screen. The micro camera 4d6 is fixedly connected to the inner side of the shell 4a. The voltage value displayed on the voltmeter 4d5 is monitored by the micro camera 4d6 and reported to the control system in real time.

[0024] The heat dissipation mechanism 4d2 also includes a cylindrical rod 4d21, two oblique rods 4d23, two connecting rods 4d24, eight sealing gaskets 4d25, eight hinged rods 4d27 and eight sliders 4d28. The cylindrical rod 4d21 is fixedly installed on the inner front side of the dust cover 4d29. The middle part of the inner wall of the cylindrical rod 4d21 is solid and the two sides are hollow structures. The inner wall of the cylindrical rod 4d21 is slidably connected to the sliding rod 4d22. The sliding effect of the sliding rod 4d22 can drive the oblique rod 4d23 to move. One end of each oblique rod 4d23 is hinged to each sliding rod 4d22. The moving effect of the oblique rod 4d23 can drive the connecting rod 4d24 to move. The other end of each oblique rod 4d23 is hinged to each connecting rod 4d24. The hinged connection is realized by the movement of a connecting rod 4d24, which can simultaneously drive four sliders 4d28 to slide along the inner wall of the slide groove. Each connecting rod 4d24 penetrates and is fixedly connected to the top of the four sliders 4d28. The sliding effect of the slider 4d28 can drive the hinged rod 4d27 to move. Each slider 4d28 is hinged to each hinged rod 4d27. The movement effect of the hinged rod 4d27 can drive the baffle 4d26 to rotate. Each hinged rod 4d27 is hinged to the outer wall of each baffle 4d26. When the baffle 4d26 closes the vent of the dust cover 4d29, it will squeeze the sealing gasket 4d25 in the corresponding vent. The inner top of the dust cover 4d29 is provided with eight slide grooves. Each slider 4d 28 is slidably connected to the inner side of each slide groove, and the slide groove guides the slider 4d28 to prevent the slider 4d28 from deviating during movement. Four vents are provided on the left and right sides of the dust cover 4d29. By providing vents on both sides of the dust cover 4d29, when the vents are opened, the inside of the dust cover 4d29 can be ventilated and heat-dissipated. Each sealing gasket 4d25 is fixedly installed on the inner side of each vent. When the baffle 4d26 squeezes the sealing gasket 4d25, the sealing gasket 4d25 will expand and deform, thereby sealing the gap between the vent and the baffle 4d26. A spring is provided on the outer wall of the sliding rod 4d22, and one end of the spring is fixedly connected to the inner side of the cylindrical rod 4d21. The other end of the spring is fixedly connected to the sliding rod 4d22. Through the elastic force of the spring, the sliding rod 4d22 always keeps sliding along the inner wall of the cylindrical rod 4d21 toward the center of the cylindrical rod 4d21 without being affected by external force. The inner side of the cylindrical rod 4d21 is filled with mercury liquid, and the cavities on both sides of the inner wall of the cylindrical rod 4d21 are filled with mercury liquid. When the heat inside the dust cover 4d29 is too high, the mercury liquid will expand, thereby squeezing the sliding rod 4d22 and the spring, so that the sliding rod 4d22 moves. When the heat decreases, the expanded mercury liquid will recover. The dust cover 4d29 is fixedly installed on the top of the control box 4c1. The fixing effect of the dust cover 4d29 prevents the dust cover 4d29 from falling off.

[0025] The variable resistance mechanism 4d3 includes a box body 4d31, a variable resistor 4d32, an output line 4d33, a guide rod 4d34, an electric push rod 4d35, a moving block 4d36, a slide 4d37, a fixed rod 4d38 and an elastic telescopic rod 4d39. The box body 4d31 is fixedly installed on the inner bottom of the dust cover 4d29. The box body 4d31 is prevented from falling off by the fixing effect of the box body 4d31. The outer wall of the variable resistor 4d32 is electrically connected to the fixed resistor 4d4. Electric power is transmitted to the variable resistor 4d32 through the fixed resistor 4d4. The variable resistor 4d32 is fixedly installed on the inner side of the box body 4d31. The variable resistor 4d32 is prevented from falling off by the fixing effect of the variable resistor 4d32. The guide rod 4d34 is fixedly installed on the box body On the inner side of 4d31, the guide rod 4d34 is electrically connected to the output line 4d33, and the power is transmitted to the output line 4d33 through the guide rod 4d34. The output line 4d33 passes through the box body 4d31, the dust cover 4d29 and the back of the shell 4a and contacts the copper sheet 3. Through the contact effect between the output line 4d33 and the copper sheet 3, the power can be transmitted to the copper sheet 3, thereby supplying power to the computer body 1. The moving block 4d36 is slidably connected to the guide rod 4d34. Through the sliding effect of the moving block 4d36, the position of the moving block 4d36 is adjusted, thereby adjusting the position of the sliding sheet 4d37, thereby adjusting the effective resistance value of the variable resistor 4d32. The moving block 4d36 is electrically connected to the guide rod 4d34, and the power is transmitted to the output line 4d33 through the moving block 4d36. The power is transmitted to the guide rod 4d34, the fixed rod 4d38 is fixedly mounted on the moving block 4d36, the fixed rod 4d38 is electrically connected to the moving block 4d36, and the fixed rod 4d38 transmits the power to the moving block 4d36. The slide 4d37 is slidably mounted on the fixed rod 4d38, and the position of the slide 4d37 on the fixed rod 4d38 is adjusted by the sliding effect of the slide 4d37 along the fixed rod 4d38. The outer wall of the slide 4d37 contacts the variable resistor 4d32. The slide 4d37 is made of copper material and has conductivity. The power on the variable resistor 4d32 can be transmitted to the slide 4d37, and the slide 4d37 is electrically connected to the variable resistor 4d32 and the fixed rod 4d38, and the power is transmitted to the fixed rod 4d36 through the slide 4d37. 8, one end of the elastic telescopic rod 4d39 is fixedly connected to the moving block 4d36, and the other end of the elastic telescopic rod 4d39 is fixedly installed on the sliding piece 4d37. Through the elastic force of the elastic telescopic rod 4d39, the sliding piece 4d37 slides along the fixed rod 4d38 without being affected by external force, and always maintains the contact effect with the variable resistor 4d32, ensuring the good contact between the sliding piece 4d37 and the variable resistor 4d32. One end of the electric push rod 4d35 is fixedly connected to the inner side of the box body 4d31, and the other end of the electric push rod 4d35 is fixedly installed on the moving block 4d36. The electric push rod 4d35 is controlled by the control system to work, so that the electric push rod 4d35 can drive the moving block 4d36 to slide along the guide rod 4d34.The position of the moving block 4d36 is thereby adjusted, thereby adjusting the effective resistance of the variable resistor 4d32.

[0026] The protection mechanism 4 also includes a cover plate 4b, and the outer wall of the cover plate 4b is provided with a plurality of heat dissipation holes, through which the interior of the shell 4a is ventilated and heat dissipated. The side wall of the computer body 1 is provided with a wiring slot, which is adapted to the connector of the power adapter. The wiring slot is in contact with the wire 4c3 and the connecting wire 4d1. The material of the wiring slot is metal copper, and power is transmitted to the wire 4c3 and the connecting wire 4d1 through the wiring slot.

[0027] The lifting assembly also includes an assembly and disassembly mechanism 5a, through which the housing 4a is easily fixed on the top plate 5a4, or the housing 4a on the top plate 5a4 is disassembled. The assembly and disassembly mechanism 5a includes a wedge block 5a1, a clamp block 5a2, a return spring 5a3 and a top plate 5a4. The lifting seat is the top plate 5a4, which can be slidably installed on the inner side of the slot 2. The sliding effect of the top plate 5a4 drives the housing 4a on the top plate 5a4 to move vertically. The bottom of the top plate 5a4 is hinged to the support rod 5c. The moving effect of the top plate 5a4 can drive the support rod 5c to move, and the support rod 5c can drive the top plate 5a4 to move in the opposite direction. The wedge block 5a1 can be slidably installed on the inner side of the top plate 5a4. The sliding effect of the wedge block 5a1 can make the wedge block 5a1 and the long groove or groove be engaged or released. The clamping block 5a2 is fixedly installed on the outer wall of the wedge block 5a1. The moving effect of the wedge block 5a1 can drive the clamping block 5a2 to move. The clamping block 5a2 can be slidably installed on the top plate 5a4. The top of the housing 4a is provided with a card slot, and the card slot 5a2 is engaged or released by sliding the card slot 5a2. One end of the return spring 5a3 is fixedly connected to the inner side of the top plate 5a4, and the other end of the return spring 5a3 is fixedly connected to the outer wall of the wedge block 5a1. The elastic force of the return spring 5a3 makes the wedge block 5a1 always maintain the card slot effect with the groove or the long groove without being affected by external force, thereby limiting the top plate 5a4. A card slot is provided at the bottom of the housing 4a. The outer wall of the card slot and the card slot are connected. The inner wall is clamped, and the shell 4a is limited by the clamping effect of the clamping block 5a2 and the clamping groove. The outer wall of the wedge block 5a1 is clamped with the inner wall of the long groove. The wedge block 5a1 can be clamped with the long groove or the groove. When the wedge block 5a1 is clamped with the groove, the wedge block 5a1 can drive the clamping block 5a2 to release the clamping effect with the clamping groove. When the wedge block 5a1 is clamped with the long groove, since the clamping depth of the wedge block 5a1 and the long groove is less than the clamping depth of the wedge block 5a1 and the groove, the clamping block 5a2 and the groove can always maintain the clamping effect.

[0028] The vehicle-mounted tablet computer with safe voltage protection has a detachable structure of a lifting mechanism so that a shell can be quickly installed in a slot, and when the shell is disassembled, it can be automatically ejected for easy access by a worker, and the automatically adjustable structure of the heat dissipation mechanism enables the mercury liquid to drive the baffle to rotate according to temperature changes, and to open or close the vent of the dust cover, thereby realizing dust prevention and heat dissipation for the fixed resistor and the variable resistor, and at the same time, through the elastic telescopic rod in the variable resistor mechanism, the sliding piece is always in good contact with the variable resistor, further improving the detection accuracy of the voltmeter and the accuracy of voltage regulation of the vehicle-mounted tablet computer, thereby improving the voltage protection effect and service life of the vehicle-mounted tablet computer.

[0029] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle-mounted tablet computer with safety voltage protection, characterized in that: The computer comprises a computer body (1), a slot (2), a copper sheet (3), a protective mechanism (4) and a lifting mechanism (5), wherein the slot (2) is located on the left side of the back of the computer body (1), the lifting mechanisms (5) are all located on the inner side of the slot (2), the protective mechanism (4) can be installed and removed on the lifting seat of the lifting mechanism (5), the protective mechanism (4) is used to provide voltage protection for the computer body (1), the copper sheet (3) is fixedly installed on the inner side of the slot (2), the protective mechanism (4) comprises a shell (4a), a control mechanism (4c) and a voltage regulating mechanism (4d), the shell (4a) can be installed and removed on the lifting seat, the control mechanism (4c) is located on the inner side of the shell (4a) and is used to control the voltage regulating mechanism (4d), and the voltage regulating mechanism (4d) is located on the top of the control mechanism (4c) and is used to The output voltage of the computer body (1) is adjusted. The voltage regulating mechanism (4d) includes a heat dissipation mechanism (4d2) and a variable resistance mechanism (4d3). The heat dissipation mechanism (4d2) is located inside the housing (4a) and is used to dissipate heat or prevent dust from the variable resistance mechanism (4d3). The variable resistance mechanism (4d3) is located inside the heat dissipation mechanism (4d2) and is used to adjust the resistance value, thereby adjusting the output voltage of the computer body (1). The heat dissipation mechanism (4d2) includes a dust cover (4d29), two sliding rods (4d22) and eight baffles (4d26). The dust cover (4d29) is located on the top of the control mechanism (4c). The two sliding rods (4d22) are located inside the dust cover (4d29). The eight baffles (4d26) are hinged to both sides of the inner wall of the dust cover (4d29).

2. The vehicle-mounted tablet computer with safety voltage protection according to claim 1, characterized in that: The lifting mechanism (5) comprises an I-shaped plate (5b), a support rod (5c), a support block (5d), a torsion spring (5e) and a pressing plate (5f), wherein the support block (5d) is fixedly mounted on the inner bottom of the slot (2), the I-shaped plate (5b) is rotatably connected to the inner side of the support block (5d), the outer wall of the I-shaped plate (5b) is hinged to the support rod (5c), one end of the torsion spring (5e) is fixedly connected to the inner side of the support block (5d), and the other end of the torsion spring (5e) is fixedly mounted on the outer wall of the I-shaped plate (5b), a groove is provided on the inner side of the slot (2), a long slot is provided on the inner side of the slot (2), and the pressing plate (5f) is slidably connected to the inner side of the long slot.

3. The vehicle-mounted tablet computer with safety voltage protection according to claim 1, characterized in that: The control mechanism (4c) comprises a control box (4c1), an electric control switch (4c2) and a wire (4c3); the control box (4c1) is fixedly mounted on the inner bottom of the housing (4a); a control system and a battery are provided inside the control box (4c1); the electric control switch (4c2) is electrically connected to the control box (4c1); two through holes are provided on the front of the housing (4a); one end of the wire (4c3) is electrically connected to the control box (4c1); and the other end of the wire (4c3) is fixedly mounted on the inner side of one of the through holes.

4. The vehicle-mounted tablet computer with safety voltage protection according to claim 1, characterized in that: The voltage regulating mechanism (4d) further includes a connecting wire (4d1), a fixed resistor (4d4), a voltmeter (4d5) and a micro camera (4d6). One end of the connecting wire (4d1) is electrically connected to the fixed resistor (4d4), the other end of the connecting wire (4d1) is fixedly mounted on the inner side of another through hole, the outer wall of the fixed resistor (4d4) is fixedly mounted on the inner side of the dust cover (4d29), the voltmeter (4d5) is fixedly mounted on the top of the dust cover (4d29), two wires are provided on the voltmeter (4d5), the two wires are fixedly connected to the two ends of the fixed resistor (4d4), and the micro camera (4d6) is fixedly connected to the inner side of the housing (4a).

5. The vehicle-mounted tablet computer with safety voltage protection according to claim 1, characterized in that: The heat dissipation mechanism (4d2) further includes a cylindrical rod (4d21), two oblique rods (4d23), two connecting rods (4d24), eight sealing washers (4d25), eight hinged rods (4d27) and eight sliders (4d28). The cylindrical rod (4d21) is fixedly mounted on the inner front side of the dust cover (4d29). The inner wall of the cylindrical rod (4d21) is slidably connected to the sliding rod (4d22). One end of each oblique rod (4d23) is hinged to each sliding rod (4d22). The other end of each oblique rod (4d23) is hinged to each connecting rod (4d24). Each connecting rod (4d24) penetrates and is fixedly connected to the top of four sliders (4d28). Each slider (4d28) is hinged to each hinge. The connecting rod (4d27) is hinged, each hinged rod (4d27) is hinged to the outer wall of each baffle (4626), eight sliding grooves are provided on the inner top of the dust cover (4d29), each slider (4d28) is slidably connected to the inner side of each sliding groove, four ventilation holes are provided on the left and right sides of the dust cover (4d29), each sealing gasket (4d25) is fixedly installed on the inner side of each ventilation hole, a spring is provided on the outer wall of the sliding rod (4d22), one end of the spring is fixedly connected to the inner side of the cylindrical rod (4d21), and the other end of the spring is fixedly connected to the sliding rod (4d22), the inner side of the cylindrical rod (4d21) is filled with mercury liquid, and the dust cover (4d29) is fixedly installed on the top of the control box (4c1).

6. The vehicle-mounted tablet computer with safety voltage protection according to claim 1, characterized in that: The variable resistance mechanism (4d3) includes a box body (4d31), a variable resistor (4d32), an output line (4d33), a guide rod (4d34), an electric push rod (4d35), a moving block (4d36), a slide (4d37), a fixed rod (4d38) and an elastic telescopic rod (4d39). The box body (4d31) is fixedly mounted on the inner bottom of the dust cover (4d29). The outer wall of the variable resistor (4d32) is in contact with the fixed rod. The fixed resistor (4d4) is electrically connected, the variable resistor (4d32) is fixedly installed on the inner side of the box body (4d31), the guide rod (4d34) is fixedly installed on the inner side of the box body (4d31), the guide rod (4d34) is electrically connected to the output line (4d33), the output line (4d33) passes through the box body (4d31), the dust cover (4d29) and the back of the shell (4a) and contacts the copper sheet (3), the moving block (4d36) ) is slidably connected to the guide rod (4d34), the moving block (4d36) is electrically connected to the guide rod (4d34), the fixed rod (4d38) is fixedly installed on the moving block (4d36), the fixed rod (4d38) is electrically connected to the moving block (4d36), the slide (4d37) is slidably installed on the fixed rod (4d38), the outer wall of the slide (4d37) is in contact with the variable resistor (4d32), and the slide (4d3 7) is electrically connected to the variable resistor (4d32) and the fixed rod (4d38), one end of the elastic telescopic rod (4d39) is fixedly connected to the moving block (4d36), the other end of the elastic telescopic rod (4d39) is fixedly mounted on the slide (4d37), one end of the electric push rod (4d35) is fixedly connected to the inner side of the box body (4d31), and the other end of the electric push rod (4d35) is fixedly mounted on the moving block (4d36).

7. The vehicle-mounted tablet computer with safety voltage protection according to claim 1, characterized in that: The protective mechanism (4) further comprises a cover plate (4b), the outer wall of which is provided with a plurality of heat dissipation holes, and the side wall of the computer body (1) is provided with a wiring slot, which is in contact with the wire (4c3) and the connecting wire (4d1).

8. The vehicle-mounted tablet computer with safety voltage protection according to claim 2, characterized in that: The lifting assembly also includes an assembly and disassembly mechanism (5a), which includes a wedge block (5a1), a clamping block (5a2), a return spring (5a3) and a top plate (5a4). The lifting seat is the top plate (5a4), which can be slidably installed on the inner side of the slot (2). The bottom of the top plate (5a4) is hinged to the support rod (5c). The wedge block (5a1) can be slidably installed on the inner side of the top plate (5a4), and the clamping block (5a2) is fixed. The clamping block (5a2) is fixedly mounted on the outer wall of the wedge block (5a1), and the clamping block (5a2) is slidably mounted on the top of the top plate (5a4). One end of the return spring (5a3) is fixedly connected to the inner side of the top plate (5a4), and the other end of the return spring (5a3) is fixedly connected to the outer wall of the wedge block (5a1). A clamping groove is provided at the bottom of the shell (4a), and the outer wall of the clamping block (5a2) is clamped to the inner wall of the clamping groove, and the outer wall of the wedge block (5a1) is clamped to the inner wall of the long groove.

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