阅读说明：本技术 一种具有防尘功能的机顶盒 (Set top box with dustproof function ) 是由 吴凤连 于 2021-08-04 设计创作，主要内容包括：本发明涉及一种具有防尘功能的机顶盒,包括主体和若干插接口,还包括防尘机构和除尘机构,所述防尘机构包括固定磁条和若干防尘组件,所述防尘组件包括转动单元、防尘板、传动盘、第一轴承、传动轴和传动单元,所述除尘机构包括驱动组件、连接组件、固定环、两个固定杆和两个除尘组件,所述除尘组件包括除尘杆、滚球、第一弹簧和两个伸缩杆,该具有防尘功能的机顶盒通过防尘机构,实现遮挡插接口的功能,使得空气中的灰尘不会附着在插接口内,从而不会出现插接不良的现象,从而提高了设备的可靠性,通过除尘机构,实现了给主体上方除尘的功能,防止主体上方积灰而影响主体的散热效果,从而提高了设备的可靠性。(The invention relates to a set-top box with a dustproof function, which comprises a main body and a plurality of interfaces, and also comprises a dustproof mechanism and a dust removal mechanism, wherein the dustproof mechanism comprises a fixed magnetic strip and a plurality of dustproof components, each dustproof component comprises a rotating unit, a dustproof plate, a transmission disc, a first bearing, a transmission shaft and a transmission unit, the dust removal mechanism comprises a driving component, a connecting component, a fixing ring, two fixing rods and two dust removal components, each dust removal component comprises a dust removal rod, a rolling ball, a first spring and two telescopic rods, the set-top box with the dustproof function can shield the interfaces through the dustproof mechanism, so that dust in the air can not be attached to the interfaces, the phenomenon of poor splicing can not occur, the reliability of equipment is improved, the function of dedusting above the main body is realized through the dustproof mechanism, the heat dissipation effect of the main body can not be influenced by dust accumulation above the main body, thereby improving the reliability of the device.)

1. A set top box with a dustproof function comprises a main body (1) and a plurality of inserting ports (2), wherein the inserting ports (2) are uniformly arranged on one side of the main body (1), and a PLC is arranged in the main body (1), and the set top box is characterized by further comprising a dustproof mechanism and a dust removal mechanism, wherein the dustproof mechanism is arranged on one side, close to the inserting ports (2), of the main body (1), the dust removal mechanism is arranged above the main body (1), and the dust removal mechanism is connected with the dustproof mechanism;

the dustproof mechanism comprises a fixed magnetic strip (7) and a plurality of dustproof components, the fixed magnetic strip (7) is connected with one side, close to the inserting port (2), of the main body (1), the number of the dustproof components is equal to that of the inserting port (2), the dustproof components correspond to the inserting port (2) one by one, a plurality of round holes are formed in one side, close to the inserting port (2), of the main body (1), the number of the round holes is equal to that of the dustproof components, the round holes correspond to the dustproof components one by one, and the dustproof components are connected with the dedusting mechanism;

the dustproof assembly comprises a rotating unit, a dustproof plate (3), a transmission disc (11), a first bearing, a transmission shaft (10) and a transmission unit, wherein the rotating unit is arranged on one side, close to the inserting port (2), of the main body (1), the rotating unit is connected with the dustproof plate (3), the rotating unit is connected with one end of the transmission shaft (10) through the transmission unit, the other end of the transmission shaft (10) penetrates through a round hole to be arranged inside the main body (1), the other end of the transmission shaft (10) is connected with the position, far away from the circle center, of the transmission disc (11), the first bearing is connected with the inner wall of one side, close to the round hole, of the main body (1), the periphery of the transmission shaft (10) is connected with the inner ring of the first bearing, and the transmission disc (11) is connected with the dedusting mechanism;

the dust removal mechanism comprises a driving assembly, a connecting assembly, a fixing ring (23), two fixing rods and two dust removal assemblies, the driving assembly is arranged inside the main body (1), the driving assembly is connected with the transmission disc (11), the fixing ring (23) is horizontally arranged above the main body (1), the two fixing rods are symmetrically arranged about the axis of the fixing ring (23), two ends of the fixing rods are respectively connected with the lower part of the fixing ring (23) and the upper part of the main body (1), the two dust removal assemblies are symmetrically arranged about the axis of the fixing ring (23), the two dust removal assemblies are connected through the connecting assembly, the connecting assembly is connected with the driving assembly, an annular groove is arranged below the fixing ring (23), and the annular groove and the fixing ring (23) are coaxially arranged;

the dust removal assembly comprises a dust removal rod (19), a rolling ball (22), a first spring (21) and two telescopic rods (20), one end of the dust removal rod (19) is connected with the connecting assembly, one side, close to the main body (1), of the dust removal rod (19) is evenly provided with a brush, the brush is abutted against the upper portion of the main body (1), the rolling ball (22) is matched with the annular groove, the ball is connected with the annular groove in a sliding mode, the two ends of the first spring (21) are connected with the upper portion of the other end of the dust removal rod (19) and the rolling ball (22) respectively, the two telescopic rods (20) are arranged on the two sides of the first spring (21) respectively, the two ends of the telescopic rods (20) are connected with the dust removal rod (19) and the rolling ball (22) respectively, and the first spring (21) is in a compressed state.

2. The set top box with the dustproof function according to claim 1, wherein the rotating unit comprises a rotating shaft (5), a rotating rod (4), a magnet block (6) and two second bearings, the two second bearings are connected with one side of the main body (1) close to the socket (2), the second bearings are arranged above the socket (2), two ends of the rotating shaft (5) are respectively connected with inner rings of the two second bearings, the rotating shaft (5) is connected with the transmission unit, two ends of the rotating rod (4) are respectively connected with the rotating shaft (5) and the dustproof plate (3), the magnet block (6) is connected with one side of the rotating rod (4) far away from the socket (2), and a magnetic pole of one side of the magnet block (6) far away from the rotating rod (4) is opposite to a magnetic pole of one side of the fixed magnetic stripe (7) far away from the main body (1).

3. The set top box with a dustproof function according to claim 2, wherein the transmission unit comprises a transmission bevel gear (8) and an auxiliary bevel gear (9), the transmission bevel gear (8) is connected with the rotating shaft (5), the auxiliary bevel gear (9) is connected with the transmission shaft (10), and the auxiliary bevel gear (9) is engaged with the transmission bevel gear (8).

4. The set-top box with dust-proof function according to claim 1, wherein the driving assembly comprises an abutting plate (12), a driving plate (13), a second spring (14), a ball screw pair (16) and a third bearing, the third bearing is arranged at the bottom in the main body (1), a small hole is arranged above the main body (1), one end of a screw rod of the ball screw pair (16) is connected with an inner ring of the third bearing, the other end of the screw rod of the ball screw pair (16) is in sealing sliding connection with an inner wall of the small hole, the other end of the screw rod of the ball screw pair (16) is connected with the connecting assembly, a nut of the ball screw pair (16) is connected with one side of the driving plate (13), the other side of the driving plate (13) is connected with the abutting plate (12), and the abutting plate (12) abuts against the periphery of the driving disc (11), the abutting plate (12) is arranged below the transmission disc (11), and two ends of the second spring (14) are connected with the lower portion of the driving plate (13) and the bottom of the main body (1) respectively.

5. The set-top box with dust-proof function of claim 4, wherein the driving assembly further comprises a guide rod (15), the driving plate (13) is provided with a through hole, two ends of the guide rod (15) are respectively connected with the top and the bottom in the main body (1), the second spring (14) is wound on the guide rod (15), the guide rod (15) passes through the through hole, the guide rod (15) is matched with the through hole, the guide rod (15) is connected with the inner wall of the through hole in a sealing and sliding manner, and the cross section of the guide rod (15) is square.

6. The set top box with the dustproof function according to claim 4, wherein the connecting assembly comprises a first connecting rod (18) and a second connecting rod (17), wherein the sides, close to each other, of the two dust removing rods (19) are respectively connected with two ends of the first connecting rod (18), one end of the second connecting rod (17) is connected with the center of the first connecting rod (18), one end, far away from the third bearing, of a screw rod of the ball screw pair (16) is provided with a connecting hole, the other end of the second connecting rod (17) is arranged inside the connecting hole, the second connecting rod (17) is matched with the connecting hole, the cross section of the second connecting rod (17) is square, and the second connecting rod (17) is connected with the connecting hole in a sliding mode.

Technical Field

The invention relates to the field of digital scientific and technical equipment, in particular to a set top box with a dustproof function.

Background

A digital video converter Box (Set Top Box), abbreviated STB, is a device that connects a television Set to an external signal source, commonly referred to as a Set-Top Box or Set-Top Box. It can convert the compressed digital signal into television content and display it on the television. The signals may come from cable, satellite dish, broadband network and terrestrial broadcast. The set-top box receives digital content, including electronic program guides, internet web pages, etc., in addition to the images and sounds that an analog television can provide. It enables users to watch digital television programs on existing television sets and to conduct interactive digital entertainment, education and commercialization activities over a network.

When the existing set top box works for a long time, a large amount of dust and impurities are easily accumulated above the main body, so that the heat dissipation effect of the main body is easily influenced, the service life of the existing set top box is influenced, the practicability of the existing set top box is reduced, furthermore, the plug port of the existing set top box is usually exposed, a large amount of dust and impurities are easily accumulated in the plug port, when a cable is inserted into the plug port, impurities such as the dust easily cause poor cable plugging, the work of transmitting signals is influenced, and the reliability of the existing set top box is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the set top box with the dustproof function is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a set top box with a dustproof function comprises a main body and a plurality of plug-in ports, wherein the plug-in ports are uniformly arranged on one side of the main body, a PLC is arranged in the main body, the set top box also comprises a dustproof mechanism and a dust removal mechanism, the dustproof mechanism is arranged on one side of the main body close to the plug-in ports, the dust removal mechanism is arranged above the main body, and the dust removal mechanism is connected with the dustproof mechanism;

the dustproof mechanism comprises a fixed magnetic strip and a plurality of dustproof assemblies, the fixed magnetic strip is connected with one side, close to the inserting port, of the main body, the number of the dustproof assemblies is equal to that of the inserting port, the dustproof assemblies correspond to the inserting port in a one-to-one mode, a plurality of round holes are formed in one side, close to the inserting port, of the main body, the number of the round holes is equal to that of the dustproof assemblies, the round holes correspond to the dustproof assemblies in a one-to-one mode, and the dustproof assemblies are connected with the dedusting mechanism;

the dustproof assembly comprises a rotating unit, a dustproof plate, a transmission disc, a first bearing, a transmission shaft and a transmission unit, wherein the rotating unit is arranged on one side of the main body close to the plug-in port and connected with the dustproof plate, the rotating unit is connected with one end of the transmission shaft through the transmission unit, the other end of the transmission shaft penetrates through the round hole and is arranged inside the main body, the other end of the transmission shaft is connected with the position, far away from the circle center, of the transmission disc, the first bearing is connected with the inner wall of the main body, close to one side of the round hole, the periphery of the transmission shaft is connected with the inner ring of the first bearing, and the transmission disc is connected with the dedusting mechanism;

the dust removal mechanism comprises a driving assembly, a connecting assembly, a fixing ring, two fixing rods and two dust removal assemblies, the driving assembly is arranged inside a main body and connected with a transmission disc, the fixing ring is horizontally arranged above the main body, the two fixing rods are symmetrically arranged about the axis of the fixing ring, two ends of each fixing rod are respectively connected with the lower portion of the fixing ring and the upper portion of the main body, the two dust removal assemblies are symmetrically arranged about the axis of the fixing ring, the two dust removal assemblies are connected through the connecting assembly, the connecting assembly is connected with the driving assembly, an annular groove is arranged below the fixing ring, and the annular groove and the fixing ring are coaxially arranged;

the utility model discloses a dust removal assembly, including dust removal pole, spin, first spring and two telescopic links, the one end and the coupling assembling of dust removal pole are connected, the one side that is close to the main part of dust removal pole evenly is equipped with the brush, the top of brush and main part is supported and is leaned on, the spin matches with the ring channel, ball and ring channel sliding connection, the both ends of first spring are connected with the top and the spin of the other end of dust removal pole respectively, and two telescopic links set up the both sides at first spring respectively, the both ends of telescopic link are connected with dust removal pole and spin respectively, first spring is in the state of compression.

Preferably, in order to facilitate rotation of the dust guard, the rotation unit comprises a rotating shaft, a rotating rod, a magnet block and two second bearings, the two second bearings are connected with one side, close to the insertion port, of the main body, the second bearings are arranged above the insertion port, two ends of the rotating shaft are respectively connected with inner rings of the two second bearings, the rotating shaft is connected with the transmission unit, two ends of the rotating rod are respectively connected with the rotating shaft and the dust guard, the magnet block is connected with one side, far away from the insertion port, of the rotating rod, and a magnetic pole, far away from one side of the rotating rod, of the magnet block is opposite to a magnetic pole, far away from one side of the main body, of the fixed magnetic stripe.

Preferably, in order to transmit power, the transmission unit includes a transmission bevel gear connected to the rotating shaft and an auxiliary bevel gear connected to the transmission shaft, the auxiliary bevel gear being engaged with the transmission bevel gear.

Preferably, in order to provide power for the rotation of the dust removing rod, the driving assembly comprises an abutting plate, a driving plate, a second spring, a ball screw pair and a third bearing, the third bearing is arranged at the bottom in the main body, a small hole is formed in the upper portion of the main body, one end of a screw rod of the ball screw pair is connected with an inner ring of the third bearing, the other end of the screw rod of the ball screw pair is connected with the inner wall of the small hole in a sealing and sliding mode, the other end of the screw rod of the ball screw pair is connected with the connecting assembly, a nut of the ball screw pair is connected with one side of the driving plate, the other side of the driving plate is connected with the abutting plate, the abutting plate abuts against the periphery of the driving disc, the abutting plate is arranged below the driving disc, and two ends of the second spring are respectively connected with the lower portion of the driving plate and the bottom in the main body.

Preferably, in order to limit the moving direction of the driving plate, the driving assembly further includes a guide rod, a through hole is formed in the driving plate, two ends of the guide rod are respectively connected with the top and the bottom in the main body, the second spring is wound on the guide rod, the guide rod penetrates through the through hole, the guide rod is matched with the through hole, the guide rod is connected with the inner wall of the through hole in a sealing and sliding manner, and the cross section of the guide rod is square.

As preferred, in order to drive the dust removal pole and rotate, coupling assembling includes first connecting rod and second connecting rod, and the one side that is close to each other of two dust removal poles is connected with the both ends of first connecting rod respectively, the one end of second connecting rod is connected with the center department of first connecting rod, the one end of keeping away from the third bearing of the vice screw rod of ball is equipped with the connecting hole, the other end setting of second connecting rod is in the inside of connecting hole, the second connecting rod matches with the connecting hole, the cross sectional shape of second connecting rod is square, second connecting rod and connecting hole sliding connection.

The invention has the advantages that the set-top box with the dustproof function realizes the function of shielding the interface through the dustproof mechanism, so that dust in the air can not be attached in the interface, thereby the phenomenon of poor splicing can not occur, thereby the reliability of the equipment is improved, compared with the prior dustproof mechanism, the dustproof mechanism can shield the interface through the dustproof plate when the interface is used, the probability of the interface contacting with water is reduced, the phenomena of short circuit and the like are avoided, thereby the quality of splicing is improved, the reliability of the equipment is improved, the function of dedusting the upper part of the main body is realized through the dedusting mechanism, the influence of dust accumulation on the upper part of the main body on the heat dissipation effect of the main body is prevented, thereby the reliability of the equipment is improved, compared with the prior dedusting mechanism, the dedusting mechanism and the dustproof mechanism are integrated into a linkage mechanism, and the electric drive is not needed, the simple operation, and can also make brush and main part support all the time and lean on, can not appear having gapped phenomenon between brush and the main part because of the long-term work of brush to can not exert an influence to the dust removal work of brush, thereby can prolong the life of dust removal pole, reduced the number of times of maintenance dust removal pole, thereby can reduce cost, the practicality is higher.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of a set-top box with a dustproof function according to the present invention;

fig. 2 is a schematic structural diagram of a dustproof mechanism of the set-top box with the dustproof function of the invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is a schematic structural diagram of a dust removal assembly of the set-top box with dust-proof function of the present invention;

in the figure: 1. the magnetic iron comprises a main body, 2 parts of a plug interface, 3 parts of a dust guard, 4 parts of a rotating rod, 5 parts of a rotating shaft, 6 parts of a magnet block, 7 parts of a fixed magnetic strip, 8 parts of a transmission bevel gear, 9 parts of an auxiliary bevel gear, 10 parts of a transmission shaft, 11 parts of a transmission disc, 12 parts of a leaning plate, 13 parts of a driving plate, 14 parts of a second spring, 15 parts of a guide rod, 16 parts of a ball screw pair, 17 parts of a second connecting rod, 18 parts of a first connecting rod, 19 parts of a dust removing rod, 20 parts of a telescopic rod, 21 parts of a first spring, 22 parts of a rolling ball and 23 parts of a fixing ring.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a set top box with a dustproof function comprises a main body 1 and a plurality of sockets 2, wherein the sockets 2 are uniformly arranged on one side of the main body 1, a PLC is arranged inside the main body 1, the set top box further comprises a dustproof mechanism and a dust removal mechanism, the dustproof mechanism is arranged on one side of the main body 1 close to the sockets 2, the dust removal mechanism is arranged above the main body 1, and the dust removal mechanism is connected with the dustproof mechanism;

PLCs, i.e., programmable logic controllers, are generally used for the processing of data and the receipt and output of instructions for central control.

This STB with dustproof function passes through dustproof mechanism, realizes sheltering from interface 2's function for dust in the air can not be attached to in interface 2, thereby can not appear the bad phenomenon of grafting, thereby has improved the reliability of equipment, through dust removal mechanism, has realized the function of removing dust for main part 1 top, prevents that main part 1 top deposition from influencing the radiating effect of main part 1, thereby has improved the reliability of equipment.

As shown in fig. 2, the dustproof mechanism includes a fixed magnetic stripe 7 and a plurality of dustproof components, the fixed magnetic stripe 7 is connected with one side of the main body 1 close to the interface 2, the number of the dustproof components is equal to that of the interface 2, the dustproof components correspond to the interface 2 one by one, a plurality of round holes are formed in one side of the main body 1 close to the interface 2, the number of the round holes is equal to that of the dustproof components, the round holes correspond to the dustproof components one by one, and the dustproof components are connected with the dedusting mechanism;

the dustproof assembly comprises a rotating unit, a dustproof plate 3, a transmission disc 11, a first bearing, a transmission shaft 10 and a transmission unit, wherein the rotating unit is arranged on one side, close to the inserting port 2, of the main body 1 and is connected with the dustproof plate 3, the rotating unit is connected with one end of the transmission shaft 10 through the transmission unit, the other end of the transmission shaft 10 penetrates through a circular hole and is arranged inside the main body 1, the other end of the transmission shaft 10 is connected with the position, far away from the center of a circle, of the transmission disc 11, the first bearing is connected with the inner wall of one side, close to the circular hole, of the main body 1, the periphery of the transmission shaft 10 is connected with the inner ring of the first bearing, and the transmission disc 11 is connected with the dedusting mechanism;

when the interface 2 is needed to be used, the dust guard 3 is driven to rotate towards the direction far away from the interface 2, the rotation unit is driven to work, the position of the dust guard 3 is fixed, the dust guard 3 can be positioned above the joint of the interface 2 and the cable, the dust guard 3 can shield the cable and the interface 2, the probability that the joint of the cable and the interface 2 is contacted with water is reduced, the phenomena of short circuit and the like are avoided, the quality of plugging is improved, the reliability of the equipment is improved, when the interface 2 is not needed to be used, the dust guard 3 is manually driven to rotate towards the direction close to the interface 2, the dust guard 3 can be abutted against the interface 2, the function of shielding the interface 2 is realized, the dust in the air can not be attached to the interface 2, the phenomenon of poor plugging can not occur, and the reliability of the equipment is improved, when dust guard 3 rotated, can drive the unit work of rotating for transmission unit work, thereby drive transmission shaft 10 and rotate, thereby can realize the 11 pivoted functions of driving disc, make dust removal mechanism can work, and no matter which dust guard 3 rotated all can drive dust removal mechanism work, the practicality is higher.

As shown in fig. 3-4, the dust removing mechanism includes a driving assembly, a connecting assembly, a fixing ring 23, two fixing rods and two dust removing assemblies, the driving assembly is disposed inside the main body 1, the driving assembly is connected with the transmission disc 11, the fixing ring 23 is horizontally disposed above the main body 1, the two fixing rods are symmetrically disposed about an axis of the fixing ring 23, two ends of the fixing rods are respectively connected with a lower portion of the fixing ring 23 and an upper portion of the main body 1, the two dust removing assemblies are symmetrically disposed about an axis of the fixing ring 23, the two dust removing assemblies are connected through the connecting assembly, the connecting assembly is connected with the driving assembly, an annular groove is disposed below the fixing ring 23, and the annular groove and the fixing ring 23 are coaxially disposed;

the dust removal subassembly includes dust removal pole 19, spin 22, first spring 21 and two telescopic links 20, the one end and the coupling assembling of dust removal pole 19 are connected, the one side that is close to main part 1 of dust removal pole 19 evenly is equipped with the brush, the brush supports with the top of main part 1 and leans on, spin 22 matches with the ring channel, ball and ring channel sliding connection, the both ends of first spring 21 are connected with the top and the spin 22 of the other end of dust removal pole 19 respectively, and two telescopic links 20 set up the both sides at first spring 21 respectively, the both ends of telescopic link 20 are connected with dust removal pole 19 and spin 22 respectively, first spring 21 is in the state of compression.

When the dust guard 3 rotates, the driving disc 11 can be driven to rotate, so that the driving disc 11 is driven to rotate, the driving assembly works, the dust removal rod 19 can be driven to rotate through the connecting assembly, the function of removing dust above the main body 1 can be realized through the rotation of the brush above the main body 1, the influence of dust deposition above the main body 1 on the heat dissipation effect of the main body 1 is prevented, the reliability of the equipment is improved, when the dust removal rod 19 rotates, the rolling ball 22 is driven to rotate in the annular groove through the telescopic rod 20, the rotation direction of the dust removal rod 19 can be limited, the dust removal rod 19 is enabled to rotate stably, meanwhile, the first spring 21 is in a compressed state, so that a downward force can be applied to the dust removal rod 19, the brush can be always abutted against the main body 1, the phenomenon that a gap exists between the brush and the main body 1 due to the long-term work of the brush is avoided, and the influence on the dust removal work of the brush is avoided, thereby can prolong the life of dust removal pole 19, reduce the number of times of maintenance dust removal pole 19 to can reduce cost, the practicality is higher.

Preferably, in order to facilitate the rotation of the dust-proof plate 3, the rotation unit includes a rotation shaft 5, a rotation rod 4, a magnet block 6 and two second bearings, the two second bearings are connected to one side of the main body 1 close to the socket 2, the second bearings are disposed above the socket 2, two ends of the rotation shaft 5 are respectively connected to inner rings of the two second bearings, the rotation shaft 5 is connected to the transmission unit, two ends of the rotation rod 4 are respectively connected to the rotation shaft 5 and the dust-proof plate 3, the magnet block 6 is connected to one side of the rotation rod 4 far away from the socket 2, and a magnetic pole of one side of the magnet block 6 far away from the rotation rod 4 is opposite to a magnetic pole of one side of the fixed magnetic stripe 7 far away from the main body 1.

Preferably, the transmission unit comprises a transmission bevel gear 8 and an auxiliary bevel gear 9 for transmitting power, wherein the transmission bevel gear 8 is connected with the rotating shaft 5, the auxiliary bevel gear 9 is connected with a transmission shaft 10, and the auxiliary bevel gear 9 is meshed with the transmission bevel gear 8.

When the socket 2 is needed to be used, the dustproof plate 3 is driven to rotate towards the direction far away from the socket 2, the rotating shaft 5 is rotated through the rotating rod 4, so that the magnet block 6 rotates towards the direction close to the fixed magnetic strip 7, the magnet block 6 can be just opposite to the fixed magnetic strip 7, because the magnetic pole at one side of the magnet block 6 far away from the rotating rod 4 is opposite to the magnetic pole at one side of the fixed magnetic strip 7 far away from the main body 1, attraction exists between the magnet block 6 and the fixed magnetic strip 7, the fixed magnetic strip 7 can limit the position of the magnet block 6, the position of the dustproof plate 3 is realized, the dustproof plate 3 can be positioned above the joint of the socket 2 and the cable, the dustproof plate 3 can shield the cable and the socket 2, the probability that the joint of the cable and the socket 2 is contacted with water is reduced, the phenomena of short circuit and the like are avoided, and the quality of the socket is improved, the reliability of equipment is improved, when need not to use interface 2, the people are for driving dust guard 3 to the direction rotation that is close to interface 2, make dust guard 3 can support with interface 2 and lean on, thereby realize the function of sheltering from interface 2, make the dust in the air can not adhere to in interface 2, thereby the bad phenomenon of grafting can not appear, thereby the reliability of equipment has been improved, when dust guard 3 rotates, can drive pivot 5 through bull stick 4 and rotate, thereby drive transmission bevel gear 8 and rotate, meshing through transmission bevel gear 8 and supplementary bevel gear 9, make supplementary bevel gear 9 rotate, drive transmission shaft 10 rotates, thereby transmission dish 11 pivoted function has been realized, make dust removal mechanism can work.

Preferably, to power the rotation of the dusting rod 19, the driving assembly comprises an abutment plate 12, a driving plate 13, a second spring 14, a ball screw pair 16 and a third bearing, the third bearing is arranged at the bottom in the main body 1, a small hole is arranged above the main body 1, one end of a screw rod of the ball screw pair 16 is connected with an inner ring of the third bearing, the other end of the screw rod of the ball screw pair 16 is connected with the inner wall of the small hole in a sealing and sliding way, the other end of the screw rod of the ball screw pair 16 is connected with the connecting component, the nut of the ball screw pair 16 is connected with one side of the driving plate 13, the other side of the driving plate 13 is connected with the abutting plate 12, the abutting plate 12 abuts against the periphery of the transmission disc 11, the abutting plate 12 is arranged below the transmission disc 11, the two ends of the second spring 14 are respectively connected with the lower part of the driving plate 13 and the bottom part in the main body 1.

Preferably, in order to limit the moving direction of the driving plate 13, the driving assembly further comprises a guide rod 15, a through hole is formed in the driving plate 13, two ends of the guide rod 15 are respectively connected with the top and the bottom in the main body 1, the second spring 14 is wound on the guide rod 15, the guide rod 15 penetrates through the through hole, the guide rod 15 is matched with the through hole, the guide rod 15 is connected with the inner wall of the through hole in a sealing and sliding mode, and the cross section of the guide rod 15 is square.

Preferably, in order to drive the dust removing rods 19 to rotate, the connecting assembly comprises a first connecting rod 18 and a second connecting rod 17, one sides, close to each other, of the two dust removing rods 19 are connected with two ends of the first connecting rod 18 respectively, one end of the second connecting rod 17 is connected with the center of the first connecting rod 18, one end, far away from the third bearing, of a screw rod of the ball screw pair 16 is provided with a connecting hole, the other end of the second connecting rod 17 is arranged inside the connecting hole, the second connecting rod 17 is matched with the connecting hole, the cross section of the second connecting rod 17 is square, and the second connecting rod 17 is connected with the connecting hole in a sliding mode.

When the dust guard 3 takes place to rotate, can drive pivot 5 when rotating, make transmission shaft 10 rotate, thereby drive driving disc 11 and rotate, make the removal that leans on board 12 can be from top to bottom, thereby can drive the nut of ball screw pair 16 through drive plate 13 and reciprocate along the screw rod of ball screw pair 16, make the rotation that the screw rod of ball screw pair 16 made a round trip, because the cross sectional shape of second connecting rod 17 is square, when making the screw rod rotate, can drive second connecting rod 17 and rotate, drive dust removal pole 19 through first connecting rod 18 and rotate, through the rotation of brush in main part 1 top, can realize the function of removing dust for main part 1 top, prevent that main part 1 top deposition from influencing the radiating effect of main part 1, thereby the reliability of equipment has been improved.

When the interface 2 is needed to be used, the dust guard 3 is driven to rotate towards the direction far away from the interface 2, the rotation unit is driven to work, the position of the dust guard 3 is fixed, the dust guard 3 can be positioned above the joint of the interface 2 and the cable, the dust guard 3 can shield the cable and the interface 2, the probability that the joint of the cable and the interface 2 is contacted with water is reduced, the phenomena of short circuit and the like are avoided, the quality of plugging is improved, the reliability of the equipment is improved, when the interface 2 is not needed to be used, the dust guard 3 is manually driven to rotate towards the direction close to the interface 2, the dust guard 3 can be abutted against the interface 2, the function of shielding the interface 2 is realized, the dust in the air can not be attached to the interface 2, the phenomenon of poor plugging can not occur, and the reliability of the equipment is improved, when dust guard 3 rotated, can drive the unit work of rotating for transmission unit work, thereby drive transmission shaft 10 and rotate, thereby can realize the 11 pivoted functions of driving disc, make dust removal mechanism can work, and no matter which dust guard 3 rotated all can drive dust removal mechanism work, the practicality is higher. When the dust guard 3 rotates, the driving disc 11 can be driven to rotate, so that the driving disc 11 is driven to rotate, the driving assembly works, the dust removal rod 19 can be driven to rotate through the connecting assembly, the function of removing dust above the main body 1 can be realized through the rotation of the brush above the main body 1, the influence of dust deposition above the main body 1 on the heat dissipation effect of the main body 1 is prevented, the reliability of the equipment is improved, when the dust removal rod 19 rotates, the rolling ball 22 is driven to rotate in the annular groove through the telescopic rod 20, the rotation direction of the dust removal rod 19 can be limited, the dust removal rod 19 is enabled to rotate stably, meanwhile, the first spring 21 is in a compressed state, so that a downward force can be applied to the dust removal rod 19, the brush can be always abutted against the main body 1, the phenomenon that a gap exists between the brush and the main body 1 due to the long-term work of the brush is avoided, and the influence on the dust removal work of the brush is avoided, thereby can prolong the life of dust removal pole 19, reduce the number of times of maintenance dust removal pole 19 to can reduce cost, the practicality is higher.

Compared with the prior art, the set top box with the dustproof function realizes the function of shielding the interface 2 through the dustproof mechanism, so that dust in the air can not be attached to the interface 2, the phenomenon of poor splicing can not occur, and the reliability of the equipment is improved, compared with the prior dustproof mechanism, the dustproof mechanism can shield the interface 2 through the dustproof plate 3 when the interface 2 is used, the probability of contact between the interface 2 and water is reduced, the phenomena of short circuit and the like are avoided, the quality of splicing is improved, the reliability of the equipment is improved, the function of dedusting the upper part of the main body 1 is realized through the dedusting mechanism, the heat dissipation effect of the main body 1 is prevented from being influenced by dust deposition above the main body 1, and the reliability of the equipment is improved, compared with the prior dedusting mechanism, the dedusting mechanism and the dustproof mechanism are an integrated linkage mechanism, and the electric drive is not needed, the simple operation, and can also make brush and main part 1 to lean on all the time, can not appear having gapped phenomenon between brush and the main part 1 because of the long-term work of brush to can not exert an influence to the dust removal work of brush, thereby can prolong the life of dust removal pole 19, reduced the number of times of maintenance dust removal pole 19, thereby can reduce cost, the practicality is higher.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.