Portable terminal

Abstract

The utility model belongs to the technical field of communication terminals, and particularly relates to a portable terminal which comprises a shell, a heat dissipation assembly, a circuit board, a first sealing structure and a second sealing structure, a heat dissipation cavity is provided with an air inlet hole and an air outlet hole which are communicated with the outside, a first through hole and a second through hole are arranged between the heat dissipation cavity and an installation cavity, and the circuit board is installed in the installation cavity. A heat dissipation fan of the heat dissipation assembly is installed in a heat dissipation cavity, the heat dissipation fan comprises a shell and fan blades installed in the shell, one end of a heat conduction piece is connected with the shell, the other end of the heat conduction piece is connected with a circuit board, a first sealing structure is used for being blocked between the heat conduction piece and a first through hole, and the heat dissipation fan is provided with a first electric connection structure. A second electric connection structure is arranged on the circuit board, the first electric connection structure penetrates through the second through hole to be electrically connected with the second electric connection structure, and the second sealing structure is used for blocking a gap between the first electric connection structure and the second through hole. The sealing performance between the cooling fan and the circuit board is improved, and the circuit board can be prevented from being polluted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to communication terminal technical field especially relates to a portable terminal. BACKGROUND

[0002] The portable terminal is a kind of small and portable communication terminal equipment, and is widely used in industrial automation, remote monitoring and data acquisition and other fields.

[0003] The existing portable terminal includes shell, heat dissipation fan and circuit board, heat dissipation fan and circuit board are installed in shell, signal receiving element and signal transmitting element are integrated on circuit board, signal transmitting element is used to send control signal to the equipment of outside world, signal receiving element is used to receive various data information sent by equipment, heat dissipation fan is electrically connected with circuit board, heat is generated when circuit board works, heat is gathered in shell, air inlet and air outlet are provided on shell, after heat dissipation fan starts, heat dissipation fan absorbs the cool air of outside world into shell, and heat in shell is discharged to shell, to realize the heat dissipation of circuit board, avoid circuit board overheating damage.

[0004] However, when the existing portable terminal is used in open environment, sundries or rain in the surrounding environment can enter shell through air inlet, to cause circuit board to be contaminated. SUMMARY

[0005] The utility model provides a kind of portable terminal to solve the technical problems that, when the existing portable terminal is used in open environment, sundries or rain in the surrounding environment can enter shell through air inlet, to cause circuit board to be contaminated.

[0006] To solve the above technical problems, the utility model embodiment provides a kind of portable terminal, including shell, heat dissipation component, circuit board, first sealing structure and second sealing structure, the shell is equipped with heat dissipation cavity and installation cavity in, the heat dissipation cavity is equipped with air inlet and air outlet with outside communication, the first perforation and the second perforation are equipped between the heat dissipation cavity and the installation cavity, the circuit board is installed in the installation cavity, the heat dissipation component includes heat dissipation fan and heat conducting piece, the heat dissipation fan is installed in the heat dissipation cavity, the heat dissipation fan includes shell and fan blade installed in the shell, air inlet and air outlet are equipped on the shell;

[0007] The heat conducting piece is worn in the first perforation, one end of the heat conducting piece is connected with the shell, the other end is connected with the circuit board, and the first sealing structure is used to block between the heat conducting piece and the first perforation;

[0008] The heat dissipation fan is provided with a first electrical connection structure, the circuit board is provided with a second electrical connection structure, the first electrical connection structure is electrically connected with the second electrical connection structure through the second through hole, and the second sealing structure is used for sealing the gap between the first electrical connection structure and the second through hole.

[0009] Optionally, the heat conduction member comprises a heat conduction plate, the heat conduction plate is installed in the heat dissipation cavity, one side of the heat conduction plate facing the heat dissipation fan is connected with the shell, and a heat conduction block is protruded from the side of the heat conduction plate away from the heat dissipation fan, the heat conduction block is arranged in the first through hole, and one end of the heat conduction block away from the heat dissipation fan is abutted with the circuit board.

[0010] Optionally, the first sealing structure comprises a sealing member, the sealing member is arranged between the heat conduction plate and the inner cavity wall of the heat dissipation cavity, and the sealing member surrounds the heat conduction block.

[0011] Optionally, the sealing member is a sealing ring, and the sealing ring is arranged along the edge of the heat conduction plate.

[0012] Optionally, the sealing member is a sealing gasket, and the sealing gasket is provided with a avoiding hole through which the heat conduction block passes.

[0013] Optionally, the heat conduction block is provided in plurality, the plurality of heat conduction blocks are arranged at intervals, a plurality of first through holes are arranged between the heat dissipation cavity and the mounting cavity, and the plurality of heat conduction blocks correspond to the plurality of first through holes one by one.

[0014] Optionally, the first electrical connection structure is a plug-in terminal, the plug-in terminal is connected with the heat dissipation fan through a cable, the second electrical connection structure is a plug-in connector, and the plug-in terminal is plug-in matched with the plug-in connector through the second through hole.

[0015] Optionally, the second sealing structure comprises a sealing block, the sealing block is plug-in arranged in the second through hole, the sealing block is provided with a third through hole, the cable is arranged in the third through hole, and the hole wall of the third through hole is in contact with the outer periphery of the cable.

[0016] Optionally, the air inlet hole is provided with an air inlet filter screen, and the air outlet hole is provided with an air outlet filter screen.

[0017] Optionally, the heat conduction member further comprises a heat dissipation fin, the heat dissipation fin is connected with the heat conduction plate, and the heat dissipation fin is located at the air outlet.

[0018] According to the portable terminal of the embodiment of the present invention, compared with the prior art, the cooling fan is installed in the cooling cavity, the circuit board is installed in the installation cavity, the shell of the cooling fan is connected to the circuit board through a heat conductor provided in the first through-hole, and the heat generated by the circuit board can be transferred to the shell through the heat conductor. When the fan blades inside the shell rotate, the flowing airflow will discharge the heat on the shell through the air outlet and the air outlet in turn to the outside of the shell, thereby realizing the heat dissipation of the circuit board. The first sealing structure is sealed between the heat conductor and the first through-hole, which can prevent debris or rainwater from entering the installation cavity through the first through-hole. The second sealing structure blocks the gap between the first electrical connection structure and the first through-hole, which can prevent debris or rainwater from entering the installation cavity through the second through-hole, thereby improving the sealing between the cooling fan and the circuit board, and preventing the circuit board from being contaminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a portable terminal provided in one embodiment of the present utility model;

[0020] Figure 2 for Figure 1 Another perspective of

[0021] Figure 3 for Figure 1 Explosion diagram of

[0022] Figure 4 for Figure 3 Schematic diagram of the structure of the middle frame in FIG;

[0023] Figure 5 for Figure 4 Another perspective of

[0024] Figure 6 for Figure 3 Schematic diagram of the structure of the heat conducting part;

[0025] Figure 7 for Figure 6 Another perspective of

[0026] Figure 8 for Figure 3 Schematic diagram of the structure of the cooling fan;

[0027] Figure 9 This is a schematic diagram of the assembly of the cooling fan, heat conductor and seal.

[0028] The accompanying drawings in the specification are as follows: 1. outer shell; 2. air inlet; 3. air inlet filter; 4. air outlet; 5. air outlet filter; 6. display screen; 7. circuit board; 8. heating chip; 9. second electrical connection structure; 10. plug connector; 11. middle frame; 12. heat conductor; 13. cooling fan; 14. back cover; 15. heat dissipation cavity; 16. first perforation; 17. second perforation; 18. second sealing structure; 19. sealing block; 20. third perforation; 21. installation cavity; 22. heat conducting plate; 23. heat conducting block; 24. connecting column; 25. bump; 26. shell; 27. fan blade; 28. air inlet; 29. ​​air outlet; 30. cooling fin; 31. first electrical connection structure; 32. plug terminal; 33. cable; 34. through hole; 35. connecting ear; 36. sealing member; 37. sealing ring. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] like Figures 1 to 9 As shown, an embodiment of the present invention provides a portable terminal, including a shell 1, a heat dissipation assembly, a circuit board 7, a first sealing structure and a second sealing structure 18, a heat dissipation cavity 15 and a mounting cavity 21 are provided in the shell 1, the heat dissipation cavity 15 is provided with an air inlet 2 and an air outlet 4 connected to the outside, a first through-hole 16 and a second through-hole 17 are provided between the heat dissipation cavity 15 and the mounting cavity 21, the circuit board 7 is installed in the mounting cavity 21, the heat dissipation assembly includes a heat dissipation fan 13 and a heat conductor 12, the heat dissipation fan 13 is installed in the heat dissipation cavity 15, the heat dissipation fan 13 includes a shell 26 and fan blades 27 installed in the shell 26, and the shell 26 is provided with an air inlet 28 and an air outlet 29.

[0031] The heat conducting member 12 is passed through the first through hole 16 , one end of the heat conducting member 12 is connected to the housing 26 , and the other end is connected to the circuit board 7 . The first sealing structure is used to seal between the heat conducting member 12 and the first through hole 16 .

[0032] The cooling fan 13 is provided with a first electrical connection structure 31, and the circuit board 7 is provided with a second electrical connection structure 9. The first electrical connection structure 31 is electrically connected to the second electrical connection structure 9 through the second through-hole 17, and the second sealing structure 18 is used to seal the gap between the first electrical connection structure 31 and the second through-hole 17.

[0033] Specifically, the shell 1 comprises a back cover 14, a middle frame 11 and a display screen 6, the middle frame 11 is connected between the back cover 14 and the display screen 6, a space between the back cover 14 and the middle frame 11 forms a heat dissipation cavity 15, and a space between the middle frame 11 and the display screen 6 forms a mounting cavity 21.

[0034] The heat dissipation fan 13 is installed in the heat dissipation cavity 15, the circuit board 7 is installed in the mounting cavity 21, an air inlet 28 of the heat dissipation fan 13 is opposite to the air inlet hole 2 on the shell 1, an air outlet 29 is opposite to the air outlet hole 4, a shell 26 of the heat dissipation fan 13 is abutted against the circuit board 7 through the heat conduction piece 12 penetrating the first perforation 16, heat generated by the circuit board 7 is transmitted to the shell 26 of the heat dissipation fan 13 through the heat conduction piece 12, when the fan blades 27 inside the shell 26 rotate, low-temperature air flow from the outside will enter the shell 26 through the air outlet hole 4 and the air outlet 29, the flowing air flow will sequentially discharge the heat on the shell 26 out of the shell 1 through the air outlet 29 and the air outlet hole 4, and the heat dissipation of the circuit board 7 is realized.

[0035] The first electric connection structure 31 is electrically connected with the second electric connection structure 9 on the circuit board 7, the display screen 6 is electrically connected with the circuit board 7, the circuit board 7 is integrated with a signal receiving element and a signal transmitting element, the signal transmitting element is used for sending a control signal to a device in the outside world, the signal receiving element is used for receiving various data information sent by the device and displaying on the display screen 6, the display screen 6 is a touch screen, and the start and the stop of the heat dissipation fan 13 are controlled through the display screen 6.

[0036] The first sealing structure is sealed between the heat conduction piece 12 and the first perforation 16, so that sundries or rainwater cannot enter the mounting cavity 21 through the first perforation 16, the second sealing structure 18 seals the gap between the first electric connection structure 31 and the first perforation 16, so that sundries or rainwater cannot enter the mounting cavity 21 through the second perforation 17, the sealing between the heat dissipation fan 13 and the circuit board 7 is improved, and the circuit board 7 can be prevented from being polluted.

[0037] In an embodiment, the heat conduction piece 12 comprises a heat conduction plate 22, the heat conduction plate 22 is installed in the heat dissipation cavity 15, one side of the heat conduction plate 22 facing the heat dissipation fan 13 is connected with the shell 26, the other side of the heat conduction plate 22 away from the heat dissipation fan 13 is provided with a heat conduction block 23, the heat conduction block 23 penetrates the first perforation 16, and one end of the heat conduction block 23 away from the heat dissipation fan 13 is abutted against the circuit board 7.

[0038] Specifically, one side of the heat conduction plate 22 facing the heat dissipation fan 13 is tightly arranged with the shell 26 of the heat dissipation fan 13, the shell 26 is provided with a connecting lug 35, the heat conduction plate 22 is provided with a connecting column 24, and the connecting lug 35 and the connecting column 24 are bolted, so that the shell 26 and the heat conduction plate 22 are fixed together.

[0039] The circuit board 7 is provided with a heat generating chip 8 on the side facing the heat conducting plate 22, and the heat is mainly generated by the heat generating chip 8 when the circuit board 7 is working. The heat conducting block 23 is protruded on the side of the heat conducting plate 22 away from the heat dissipation fan 13, and the heat conducting block 23 is arranged in the first through hole 16. The end of the heat conducting block 23 away from the heat conducting plate 22 is in abutment with the heat generating chip 8, so that the heat on the heat generating chip 8 is transmitted to the heat conducting plate 22 through the heat conducting block 23, and then transmitted to the shell 26 of the heat dissipation fan 13 through the heat conducting plate 22.

[0040] In an embodiment, the first sealing structure comprises a sealing member 36 arranged between the heat conducting plate 22 and the inner cavity wall of the heat dissipation cavity 15, and the sealing member 36 is arranged around the heat conducting block 23. The sealing member is a sealing ring 37 arranged along the edge of the heat conducting plate 22.

[0041] Specifically, the sealing member 36 is a ring-shaped sealing ring 37 arranged along the edge of the heat conducting plate 22. The heat conducting block 23 is arranged in the space surrounded by the sealing ring 37. The sealing ring 37 is soft in texture and is compressed when the heat conducting plate 22 and the cavity wall of the heat dissipation cavity 15 are installed together, so as to form a sealing hole between the sealing ring 37, the heat conducting plate 22 and the cavity wall of the heat dissipation cavity 15. The heat conducting block 23 and the first through hole 16 are arranged in the sealing space, so as to isolate the first through hole 16 from the heat dissipation cavity 15, and prevent sundries or rainwater in the heat dissipation cavity 15 from entering the installation cavity 21 through the first through hole 16. The sealing ring 37 is simple in structure and convenient to design and install.

[0042] In an embodiment, a plurality of heat conducting blocks 23 are arranged at intervals. A plurality of first through holes 16 are arranged between the heat dissipation cavity 15 and the installation cavity 21, and the plurality of heat conducting blocks 23 correspond to the plurality of first through holes 16 one by one.

[0043] Specifically, a plurality of heat conducting blocks 23 are arranged at intervals on the side of the heat conducting plate 22 away from the heat dissipation fan 13. The plurality of heat conducting blocks 23 correspond to the plurality of first through holes 16 one by one. A plurality of heat generating chips 8 are arranged on the circuit board 7, and the heat conducting blocks 23 correspond to the heat generating chips 8 one by one. The contact area between the heat conducting blocks 23 and the circuit is increased, the heat conduction speed is improved, and the heat dissipation efficiency is improved.

[0044] In an embodiment, the first electric connection structure 31 is a plug-in terminal 32, the plug-in terminal 32 is connected to the heat dissipation fan 13 through a cable 33, the second electric connection structure 9 is a plug-in connector 10, and the plug-in terminal 32 is plugged and matched with the plug-in connector 10 through the second through hole 17.

[0045] Specifically, the shell 26 of the heat dissipation fan 13 is provided with a through hole 34, one end of the cable 33 is connected with the heat dissipation fan 13, the other end passes through the through hole 34 and is connected with a plug-in terminal 32, the cable 33 passes through the second through hole 17, and the plug-in terminal 32 extends into the mounting cavity 21 and is plugged with the plug-in head 10 on the circuit board 7, so that the heat dissipation fan 13 is electrically connected with the circuit board 7.

[0046] In an embodiment, the second sealing structure 18 comprises a sealing block 19, the sealing block 19 is plugged in the second through hole 17, the sealing block 19 is provided with a third through hole 20, the cable 33 passes through the third through hole 20, and the hole wall of the third through hole 20 is in contact with the outer periphery of the cable 33.

[0047] Specifically, the sealing block 19 is a cotton structure, the sealing block 19 is plugged in the second through hole 17, the sealing block 19 is provided with the third through hole 20, the cable 33 passes through the third through hole 20, the inner hole wall of the third through hole 20 of the sealing block 19 is in close contact with the outer periphery of the cable 33, the sealing between the cable 33 and the third through hole 20 is realized, and thus the mounting cavity 21 forms a sealed space.

[0048] In an embodiment, the air inlet hole 2 is provided with an air inlet filter screen 3, and the air outlet hole 4 is provided with an air outlet filter screen 5.

[0049] Specifically, the air inlet hole 2 is arranged on the rear cover 14 and faces the air inlet 28 of the heat dissipation fan 13, and the air inlet hole 2 is provided with the air inlet filter screen 3 to filter the gas entering the heat dissipation cavity 15 from the outside. The air outlet hole 4 is arranged on the middle frame 11 and faces the air outlet 29 of the heat dissipation fan 13, and the air outlet hole 4 is provided with the air outlet filter screen 5 to filter the gas entering the heat dissipation cavity 15 from the outside.

[0050] In an embodiment, the heat conduction piece 12 further comprises a heat dissipation fin 30, the heat dissipation fin 30 is connected with the heat conduction plate 22, and the heat dissipation fin 30 is located at the air outlet 29.

[0051] Specifically, the heat dissipation fin 30 is arranged at the air outlet 29 of the heat dissipation fan 13, heat of the heat conduction plate 22 is transferred to the heat dissipation fin 30, the heat dissipation area of the heat conduction piece 12 is increased, in addition, the air blown out of the air outlet 29 of the heat dissipation fan 13 directly hits the heat dissipation fin 30, and the heat dissipation efficiency is improved.

[0052] In an embodiment, one side of the heat conduction plate 22 facing the heat dissipation fan 13 is provided with a protruding block 25, the protruding block 25 is in contact with the shell 26 of the heat dissipation fan 13, the protruding block 25 is used for supporting the shell 26, so that there is a gap between the shell 26 and the heat conduction plate 22, and air inlet is facilitated.

[0053] The working principle of the portable terminal is as follows: when the circuit board 7 works, the heat is mainly generated by the heat chip 8, the heat-conducting block 23 is protruded on the side of the heat-conducting plate 22 which is away from the heat-dissipating fan 13, the heat-conducting block 23 is arranged in the first perforation 16, and one end of the heat-conducting block 23 which is away from the heat-conducting plate 22 is abutted with the heat chip 8, so that the heat on the heat chip 8 is transmitted to the heat-conducting plate 22 through the heat-conducting block 23, and then is transmitted to the shell 26 of the heat-dissipating fan 13 through the heat-conducting plate 22, when the fan blade 27 in the shell 26 rotates, the low-temperature airflow outside can enter the shell 26 through the air outlet hole 4 and the air outlet 29, and the flowing airflow can discharge the heat on the shell 26 to the outside of the shell 1 through the air outlet 29 and the air outlet hole 4 in sequence, and the heat dissipation of the circuit board 7 is realized.

[0054] Compared with the prior art, the heat-dissipating fan 13 is installed in the heat-dissipating cavity 15, the circuit board 7 is installed in the mounting cavity 21, the shell 26 of the heat-dissipating fan 13 is connected with the circuit board 7 through the heat-conducting piece 12 arranged in the first perforation 16, the heat generated by the circuit board 7 can be transmitted to the shell 26 through the heat-conducting piece 12, when the fan blade 27 in the shell 26 rotates, the flowing airflow can discharge the heat on the shell 26 to the outside of the shell 1 through the air outlet 29 and the air outlet hole 4 in sequence, the heat dissipation of the circuit board 7 is realized, the first sealing structure is blocked between the heat-conducting piece 12 and the first perforation 16, the foreign matters or rainwater can be prevented from entering the mounting cavity 21 through the first perforation 16, the gap between the first electric connection structure 31 and the first perforation 16 is blocked by the second sealing structure 18, the foreign matters or rainwater can be prevented from entering the mounting cavity 21 through the second perforation 17, the sealing property between the heat-dissipating fan 13 and the circuit board 7 is improved, and the circuit board 7 can be prevented from being polluted.

[0055] In other embodiments, the sealing piece 36 is a sealing gasket, and the sealing gasket is provided with an avoiding hole through which the heat-conducting block 23 passes.

[0056] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A portable terminal, characterized in that: The invention comprises a housing (1), a heat dissipation assembly, a circuit board (7), a first sealing structure and a second sealing structure (18); the housing (1) is provided with a heat dissipation cavity (15) and a mounting cavity (21); the heat dissipation cavity (15) is provided with an air inlet (2) and an air outlet (4) communicating with the outside; a first through-hole (16) and a second through-hole (17) are provided between the heat dissipation cavity (15) and the mounting cavity (21); the circuit board (7) is installed in the mounting cavity (21); the heat dissipation assembly comprises a heat dissipation fan (13) and a heat conducting member (12); the heat dissipation fan (13) is installed in the heat dissipation cavity (15); the heat dissipation fan (13) comprises a shell (26) and a fan blade (27) installed in the shell (26); and the shell (26) is provided with an air inlet (28) and an air outlet (29); The heat conducting member (12) is inserted into the first through hole (16), one end of the heat conducting member (12) is connected to the housing (26), and the other end is connected to the circuit board (7), and the first sealing structure is used to seal between the heat conducting member (12) and the first through hole (16); The heat dissipation fan (13) is provided with a first electrical connection structure (31), and the circuit board (7) is provided with a second electrical connection structure (9). The first electrical connection structure (31) passes through the second through-hole (17) and is electrically connected to the second electrical connection structure (9). The second sealing structure (18) is used to seal the gap between the first electrical connection structure (31) and the second through-hole (17).

2. The portable terminal according to claim 1, wherein: The heat conducting member (12) includes a heat conducting plate (22), which is installed in the heat dissipation cavity (15). The side of the heat conducting plate (22) facing the heat dissipation fan (13) is connected to the housing (26). The side of the heat conducting plate (22) facing away from the heat dissipation fan (13) is provided with a heat conducting block (23) protruding therefrom. The heat conducting block (23) is passed through the first through hole (16), and the end of the heat conducting block (23) away from the heat dissipation fan (13) abuts against the circuit board (7).

3. The portable terminal according to claim 2, wherein: The first sealing structure comprises a sealing member (36), the sealing member (36) being located between the heat conducting plate (22) and the inner cavity wall of the heat dissipation cavity (15), and the sealing member (36) being arranged around the heat conducting block (23).

4. The portable terminal according to claim 3, wherein: The sealing member (36) is a sealing ring (37), and the sealing ring (37) is arranged along the edge of the heat conducting plate (22).

5. The portable terminal according to claim 3, wherein: The sealing member (36) is a sealing gasket, and the sealing gasket is provided with an avoidance hole for the heat conducting block (23) to pass through.

6. The portable terminal according to claim 2, wherein: A plurality of the heat-conducting blocks (23) are provided, and the plurality of the heat-conducting blocks (23) are arranged at intervals. A plurality of the first through-holes (16) are provided between the heat dissipation cavity (15) and the installation cavity (21), and the plurality of the heat-conducting blocks (23) correspond one-to-one to the plurality of the first through-holes (16).

7. The portable terminal according to claim 1, wherein: The first electrical connection structure (31) is a plug-in terminal (32), and the plug-in terminal (32) is connected to the cooling fan (13) via a cable (33). The second electrical connection structure (9) is a plug connector (10), and the plug-in terminal (32) passes through the second through hole (17) and is plugged into the plug connector (10).

8. The portable terminal according to claim 7, wherein: The second sealing structure (18) includes a sealing block (19), the sealing block (19) is inserted into the second through-hole (17), a third through-hole (20) is provided on the sealing block (19), the cable (33) is passed through the third through-hole (20), and the hole wall of the third through-hole (20) is in contact with the outer periphery of the cable (33).

9. The portable terminal according to claim 1, wherein: An air inlet filter (3) is provided in the air inlet hole (2), and an air outlet filter (5) is provided in the air outlet hole (4).

10. The portable terminal according to claim 2, wherein: The heat conducting member (12) further includes a heat dissipation fin (30), the heat dissipation fin (30) being connected to the heat conducting plate (22), and the heat dissipation fin (30) being located at the air outlet (29).

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