Servo motor with good waterproofness

Abstract

The invention relates to the technical field of motors, in particular to a servo motor with good waterproofness, which comprises the following structures: an outer shell with a closed cavity formed inside, and a plurality of air inlets and a plurality of air outlets formed in the side wall of the outer shell; the inner side shell is fixedly arranged in the closed cavity in the axial direction of the outer side shell, a plurality of air inlets and a plurality of air outlets are formed in the inner side shell, and the air inlets and the air outlets face the top wall of an inner cavity of the outer side shell; and the motor main body is arranged in the inner side shell. The air inlet and the air outlet are staggered with the air inlet and the air outlet, so that the possibility that an aqueous solution splashed into the inner cavity of the outer shell through the air inlet or the air outlet directly enters the inner cavity of the inner shell through the air inlet or the air outlet is reduced, the waterproof performance of the device is enhanced, and meanwhile, the heat dissipation effect of the device is ensured; and the problem of poor heat dissipation effect in the prior art is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly relates to a servo motor with good waterproof performance. Background Art

[0002] A servo motor refers to an engine that controls the operation of mechanical components in a servo system. It has advantages such as high control precision and flexible electronic commutation methods, and is widely used in the servo systems of new energy vehicles. When a servo motor with a large power operates, a large amount of heat will be generated. To extend the service life of the servo motor, those skilled in the art usually adopt means such as setting a fan blade on the motor shaft and opening heat dissipation holes on the motor housing to export the heat inside the motor through the heat dissipation holes. However, the working environment of the servo motor applied to new energy vehicles is more severe, and generally needs to have a certain waterproof performance to prevent splashing mud or rainwater from entering the motor interior and causing motor circuit failures.

[0003] In this regard, those skilled in the art usually adopt means such as canceling the heat dissipation holes on the motor housing, setting a static sealing mechanism between the joint surfaces of various components on the outer surface of the motor, and setting a dynamic sealing mechanism between the motor shaft and the shaft hole to improve the waterproof performance of the servo motor. However, this undoubtedly greatly sacrifices the heat dissipation performance of the servo motor, and there is a problem of poor heat dissipation effect. Summary of the Invention

[0004] Aiming at the technical problem of poor heat dissipation effect existing in the servo motor with waterproof function in the prior art, an embodiment of the present invention provides a servo motor with good waterproof performance, which includes:

[0005] An outer shell, which forms a sealed cavity inside, and there are a plurality of air inlets and a plurality of air outlets opened on the side wall of the outer shell;

[0006] An inner shell, which is fixedly arranged in the sealed cavity along the axial direction of the outer shell. There are a plurality of air inlets and a plurality of air outlets opened on the inner shell, and the plurality of air inlets and the plurality of air outlets all face the inner cavity top wall of the outer shell;

[0007] A motor main body, which is arranged inside the inner shell.

[0008] Furthermore, the device further includes:

[0009] A partition board, which is fixedly arranged on the circumferential side wall of the inner shell. The partition board divides the cavity between the outer shell and the inner shell into a first diversion cavity and a second diversion cavity. The first diversion cavity communicates with the plurality of air inlets and the plurality of air inlets, and the second diversion cavity communicates with the plurality of air outlets and the plurality of air outlets;

[0010] A plurality of fins, which are fixedly arranged on the circumferential side wall of the inner shell, and the plurality of fins are all fixedly connected to the inner wall of the outer shell;

[0011] The outer surfaces of the inner housing and the fins are both provided with a plurality of pits;

[0012] A pair of drain openings are formed in the outer wall of the outer housing. The drain openings communicate with the bottom of the inner cavity of the outer housing. The pair of drain openings are arranged on both sides of the partition plate and are used to drain the aqueous solution accumulated in the first diversion cavity and the second diversion cavity;

[0013] A pair of switch components are fixedly arranged on the inner wall of the outer housing. The pair of switch components respectively match the positions of the pair of drain openings and are used to control the opening and closing of the drain openings.

[0014] Furthermore, the device further includes:

[0015] A tail housing is fixedly arranged at the tail end of the outer housing;

[0016] An air intake window is formed in the outer wall of the tail housing. The air intake window communicates with the inner cavity of the tail housing;

[0017] A waterproof and breathable filter element is fixedly arranged in the air intake window and is used to isolate the inner cavity of the tail housing from the external environment;

[0018] A plurality of plugging modules are arranged on the inner wall of the outer housing. The plurality of plugging modules correspond to the positions of the plurality of air inlet openings one by one and are used to control the opening and closing of the air inlet openings;

[0019] A transmission shaft is movably arranged in the inner cavity of the tail housing. The axis of the transmission shaft is collinear with the axis of the motor shaft of the motor main body;

[0020] A fan blade is fixedly sleeved on the transmission shaft;

[0021] A plurality of air intake holes are formed in the end face of the tail end of the outer housing. Any one of the air intake holes penetrates through the outer wall of the outer housing to communicate the cavity between the outer housing and the inner housing;

[0022] A transmission module is arranged in the inner cavity of the tail housing. The transmission module is connected to the transmission shaft and is used to fixedly assemble the transmission shaft at the tail end of the motor shaft;

[0023] An air supply module is arranged in the inner cavity of the tail housing. The air supply module is connected to the plurality of plugging modules and the transmission module.

[0024] Furthermore, the plugging module includes:

[0025] A plurality of guide rods are fixedly arranged on the inner wall of the outer housing;

[0026] A baffle is movably arranged in the inner cavity of the outer housing. The baffle corresponds to the position of the air inlet opening. The baffle is slidably connected to the plurality of guide rods and is used to close the air inlet opening;

[0027] The bearing bracket is fixedly arranged on a plurality of guide rods;

[0028] The first airbag is fixedly arranged on the bearing bracket. The first airbag is located between the baffle and the bearing bracket, and is fixedly connected to the baffle. The first airbag is connected to the air supply module and is used to drive the baffle to slide along the guidance of the guide rod;

[0029] The first air outlet is opened on the first airbag and is used to discharge the air inside the first airbag;

[0030] The first spring is fixedly arranged inside the first airbag, and both ends of the first spring are fixedly connected to the inner wall of the first airbag, and are used to drive the first airbag to contract and reset.

[0031] Further, the transmission module includes:

[0032] The assembly slot is opened at the head end of the transmission shaft, and the tail end of the motor shaft is movably inserted into the assembly slot;

[0033] The assembly slot is composed of an assembly section and a transmission section. The transmission section is located between the assembly section and the tail end of the transmission shaft. The inner cavity shape of the transmission section is a prism, and the radial cross-sectional shape of the transmission section matches that of the tail end of the motor shaft;

[0034] The first bearing is movably sleeved on the tail end of the motor shaft, and the outer ring of the first bearing is fixedly connected to the inner wall of the assembly slot. The first bearing is located in the inner cavity of the assembly section;

[0035] The first movable plate is movably arranged in the inner cavity of the transmission section, and the radial cross-sectional shape of the first movable plate matches that of the inner cavity of the transmission section;

[0036] The second spring is arranged in the inner cavity of the transmission section. The second spring is located between the movable plate and the tail end of the transmission shaft. One end of the second spring is connected to the first movable plate, and the other end of the second spring is connected to the inner wall of the assembly slot, and is used to elastically support the first movable plate;

[0037] The first assembly bracket is fixedly arranged on the inner wall of the tail end housing;

[0038] The transmission component is arranged on the first assembly bracket. The transmission component is connected to the transmission shaft and the air supply module, and is used to drive the transmission shaft to axially displace along the motor shaft.

[0039] Further, the transmission component includes:

[0040] The assembly convex groove is fixedly arranged on the first assembly bracket, and the assembly convex groove is movably inserted into the transmission shaft;

[0041] The second bearing is sleeved on the tail end of the transmission shaft. The inner ring of the second bearing is fixedly connected to the transmission shaft, and the outer ring of the second bearing abuts against the circumferential inner wall of the assembly convex groove;

[0042] The second airbag is arranged in the inner cavity of the assembly groove. The second airbag is located between the transmission shaft and the first assembly bracket, and the second airbag is connected to the air supply module;

[0043] The second air outlet is opened on the second airbag and is used to discharge the air in the inner cavity of the second airbag;

[0044] The second movable plate is movably arranged in the inner cavity of the assembly groove. The second movable plate is located between the transmission shaft and the second airbag;

[0045] The thrust ball bearing is movably arranged in the inner cavity of the assembly groove. The seat ring of the thrust ball bearing is fixedly connected to the second movable plate, and the shaft ring of the thrust ball bearing is connected to the tail end of the transmission shaft.

[0046] Furthermore, the air supply module includes:

[0047] The second assembly bracket is fixedly arranged on the inner wall of the tail end housing;

[0048] The buffer tank is fixedly arranged on the second assembly bracket. The buffer tank is connected to the first airbags of a plurality of plugging modules and is used to supply air to the first airbags;

[0049] A pair of air supply components are arranged on the second assembly bracket. Any one of the air supply components is connected to the buffer tank and the second airbag and is used to supply air to the buffer tank and the second airbag;

[0050] The power component is arranged on the second assembly bracket. The power component is connected to the air supply component and is used to drive the air supply component to operate.

[0051] Furthermore, the air supply component includes:

[0052] The bearing frame is fixedly arranged on the second assembly bracket;

[0053] The third airbag is arranged in the inner cavity of the bearing frame. The third airbag is connected to the power component;

[0054] The air inlet nozzle is arranged on the third airbag. The air outlet end of the air inlet nozzle is communicated with the inner cavity of the third airbag, and the air inlet end of the air inlet nozzle is communicated with the inner cavity of the tail end housing;

[0055] The first one-way valve is arranged on the air inlet nozzle and is used to restrict the flow direction of the gas flowing through the air inlet nozzle;

[0056] A pair of air outlet nozzles are arranged on the third airbag. The air inlet ends of the pair of air outlet nozzles are both communicated with the inner cavity of the third airbag. The air outlet end of one of the air outlet nozzles is connected to the buffer tank, and the air outlet end of the other air outlet nozzle is connected to the second airbag and is used to supply air to the buffer tank and the second airbag;

[0057] A pair of second one-way valves, respectively arranged on a pair of air outlet nozzles, for restricting the flow direction of the gas flowing through the air outlet nozzles;

[0058] A first electromagnetic valve, arranged on the air outlet nozzle connected to the second airbag, for controlling the on-off of the air outlet nozzle connected to the second airbag.

[0059] Furthermore, the buffer tank includes:

[0060] A tank body, fixedly arranged on the second assembly bracket, and a pair of buffer chambers are arranged inside the tank body;

[0061] A pair of guide rods, respectively fixedly arranged on the inner walls of a pair of buffer chambers, and the axes of the pair of guide rods are collinear;

[0062] A pair of pistons, respectively movably arranged in a pair of buffer chambers, the pair of pistons are respectively slidably connected to the pair of guide rods, and the piston matches the radial cross-sectional shape of the buffer chamber;

[0063] A pair of return springs, respectively arranged in a pair of buffer chambers, the pair of pistons are located between the pair of return springs, one end of the return spring is connected to the piston, and the other end of the return spring is connected to the inner wall of the tank body, for elastically supporting the piston;

[0064] A pair of inlet pipes, arranged on the tank body, the output ends of the pair of inlet pipes are respectively communicated with the pair of buffer chambers, the output ends of the pair of inlet pipes are located between the pair of pistons, and the input ends of the pair of inlet pipes are respectively connected to a pair of air supply components;

[0065] A pair of second electromagnetic valves, arranged on the tank body, the input ends of the pair of second electromagnetic valves are respectively communicated with the pair of buffer chambers, and the input ends of the pair of second electromagnetic valves are located between the pair of pistons;

[0066] A pair of exhaust pipes, arranged on the tank body, the input ends of the pair of exhaust pipes are respectively communicated with the pair of buffer chambers, the input ends of the exhaust pipes are located between the pair of pistons, and the output ends of the exhaust pipes are communicated with the first airbag, for supplying air to the first airbag;

[0067] A pair of third electromagnetic valves, respectively arranged on the pair of exhaust pipes, for controlling the on-off of the exhaust pipes;

[0068] A pair of diversion pipes, arranged on the tank body, the head ends of the pair of diversion pipes are respectively communicated with the pair of buffer chambers, and the pair of pistons are located between the head ends of the pair of diversion pipes;

[0069] A pair of spray pipelines, fixedly arranged on the inner side of the inner shell, the main sections of the pair of spray pipelines are respectively communicated with the pair of diversion pipes, several branch sections of any one spray pipeline are attached to the circumferential side wall of the inner shell, several water outlet holes are arranged on each branch section of the spray pipeline, and any one water outlet hole faces the circumferential side wall of the inner shell;

[0070] A pair of third one-way valves are respectively arranged on the dry sections of a pair of spray pipelines, and are used to restrict the flow direction of the liquid or gas flowing through the branch sections of the spray pipelines;

[0071] A pair of water suction pipes are fixedly arranged on the inner wall of the outer shell. The water suction pipes are located at the bottom of the inner cavity of the outer shell. The output ends of the pair of water suction pipes are respectively communicated with a pair of diversion pipes, and are used to extract the aqueous solution accumulated in the cavity between the outer shell and the inner shell;

[0072] A pair of fourth one-way valves are respectively arranged on the pair of water suction pipes, and are used to restrict the flow direction of the liquid or gas flowing through the water suction pipes.

[0073] Furthermore, the power assembly includes:

[0074] A pair of sliding grooves are opened on the second assembly bracket, and the pair of sliding grooves are arranged in parallel;

[0075] A pair of racks are movably arranged on the second assembly bracket, and the pair of racks are respectively slidably connected with the pair of sliding grooves;

[0076] A pair of connecting pieces are respectively fixedly arranged on the pair of racks, and the pair of connecting pieces are respectively connected with a pair of air supply assemblies, and are used to drive the pair of air supply assemblies to operate;

[0077] An assembly shaft is arranged in the inner cavity of the tail end housing. One end of the assembly shaft is rotatably connected with the second assembly bracket, and the other end of the assembly shaft is rotatably connected with the inner wall of the tail end housing;

[0078] A gear is fixedly sleeved on the assembly shaft, and the gear meshes with the pair of racks, and is used to drive the pair of racks to reciprocally slide along the guiding directions of the pair of sliding grooves;

[0079] A swing member is movably arranged in the inner cavity of the tail end housing. The top end of the swing member is fixedly connected with the assembly shaft, and is used to drive the assembly shaft to rotate.

[0080] The servo motor with good waterproof performance according to the embodiment of the present invention has the following beneficial effects:

[0081] 1. By arranging the air inlet and air outlet opened on the outer shell and the air inlet and air outlet opened on the inner shell in a staggered manner, the possibility that the aqueous solution splashing into the inner cavity of the outer shell through the air inlet or air outlet directly enters the inner cavity of the inner shell through the air inlet or air outlet, resulting in an electrical circuit failure of the motor main body, is reduced. Furthermore, the waterproof performance of the present device is enhanced, and at the same time, the heat dissipation effect of the present device is ensured, and the problem of poor heat dissipation effect existing in the prior art is avoided.

[0082] 2. By setting a plugging module in this device, after the air supply module inflates the first airbag of the plugging module, the first airbag expands and presses against the baffle to close the air inlet, preventing muddy water splashed up during vehicle driving from entering the inner cavity of the outer housing through the air inlet, and further enhancing the waterproof performance of this device.

[0083] 3. By setting a tail-end housing at the tail end of the outer housing and arranging a transmission shaft, fan blades, a transmission module, and an air supply module inside the tail-end housing in this device, the air supply module is used to drive the transmission module to fixedly assemble the transmission shaft to the tail end of the motor shaft, the power of the motor shaft drives the transmission shaft and the fan blades to rotate synchronously, the rotation of the fan blades is used to overcome the resistance of the waterproof and breathable filter element to extract external air, and the air in the tail-end housing is conveyed to the first diversion cavity through the air inlet holes to promote the air circulation inside the outer housing and ensure the heat dissipation effect of this device; secondly, this device can control the transmission module and the air supply module to fixedly assemble the transmission shaft to the tail end of the motor shaft when needed and keep the transmission shaft disengaged from the motor shaft when not needed to save the operating energy consumption of the device.

[0084] 4. By setting a buffer tank in this device to temporarily store the gas input from the third airbag to the first airbag, so that the gas stored in the buffer tank can be input into the first airbag when needed, and by setting a second electric control valve on the tank body to regularly release the gas in the buffer cavity to prevent damage to the device caused by excessive internal pressure in the buffer tank, and at the same time, it can control the piston to reciprocate periodically, and then use the diversion pipe and the water extraction pipe to extract the aqueous solution accumulated in the inner cavity of the outer housing and spray it onto the outer surface of the inner housing through the spray pipe, thereby enhancing the heat dissipation effect of this device on the inner housing.

[0085] It should be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 Is a perspective view of the first embodiment according to the present invention (the outer housing is treated by perspective);

[0087] Figure 2 Is a schematic diagram of the internal structure of the first embodiment according to the present invention;

[0088] Figure 3 Is an exploded view of the structure of the drainage module of the first embodiment according to the present invention;

[0089] Figure 4 Is a perspective view of the second embodiment according to the present invention;

[0090] Figure 5 Is a schematic diagram of the internal structure of the second embodiment according to the present invention;

[0091] Figure 6 Assembly schematic diagram of the transmission module according to Embodiment 2 of the present invention;

[0092] Figure 7 is Figure 6 Partial enlarged schematic diagram of area A in

[0093] Figure 8 Cross-sectional view of the transmission shaft according to Embodiment 2 of the present invention;

[0094] Figure 9 Structural decomposition schematic diagram of the plugging module according to Embodiment 2 of the present invention;

[0095] Figure 10 Assembly schematic diagram of the air supply assembly according to Embodiment 3 of the present invention (hiding the bearing frame of one of the air supply assemblies);

[0096] Figure 11 is Figure 10 Partial enlarged schematic diagram of area B in

[0097] Figure 12 Internal structure schematic diagram of the buffer tank according to Embodiment 3 of the present invention;

[0098] Figure 13 Assembly schematic diagram of the power assembly according to Embodiment 4 of the present invention.

[0099] Explanation of the reference numerals in the drawings:

[0100] 1 - Outer housing, 11 - Air inlet, 12 - Air outlet, 13 - Air intake hole, 2 - Inner housing, 21 - Air inlet, 22 - Air outlet, 23 - Partition board, 241 - First diversion cavity, 242 - Second diversion cavity, 24 - Fins, 25 - Motor shaft, 31 - Drainage port, 32 - Switch assembly, 321 - Linear module, 322 - Gate plate, 4 - Tail-end housing, 41 - Waterproof and breathable filter element, 5 - Sealing module, 51 - Guide rod, 52 - Baffle plate, 53 - Bearing bracket, 54 - First airbag, 6 - Transmission shaft, 61 - Fan blade, 7 - Transmission module, 71 - Assembly slot, 711 - Assembly section, 712 - Transmission section, 72 - First bearing, 73 - First movable plate, 74 - Second spring, 75 - First assembly bracket, 761 - Assembly convex groove, 762 - Second bearing, 763 - Second airbag, 764 - Second movable plate, 765 - Thrust ball bearing, 8 - Air supply module, 81 - Second assembly bracket, 821 - Bearing frame, 822 - Third airbag, 823 - Air inlet nozzle, 824 - Air outlet nozzle, 8241 - First electric control valve, 831 - Slide groove, 832 - Rack, 833 - Connector, 834 - Assembly shaft, 835 - Gear, 836 - Swing member, 84 - Buffer tank, 841 - Tank body, 842 - Buffer cavity, 843 - Guide rod, 844 - Piston, 845 - Return spring, 846 - Air inlet pipe, 847 - Second electric control valve, 848 - Exhaust pipe, 849 - Third electric control valve, 850 - Diversion pipe, 851 - Spraying pipeline, 8511 - Branch section, 8512 - Main section, 852 - Third one-way valve, 853 - Water suction pipe, 854 - Fourth one-way valve. Detailed implementation mode

[0101] The following will combine with the attached drawings to describe in detail the preferred embodiments of the present invention and further elaborate on the present invention.

[0102] Regarding the foregoing and other technical contents, features and effects of the present invention, they will be clearly presented in the following detailed description of the embodiments in conjunction with the reference drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only the directions of reference to the attached drawings. Therefore, the directional terms used are for illustration and not for limiting the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0103] Embodiment 1

[0104] Specifically, as Figure 1 、 2As shown in the figure, a servo motor with good waterproof performance according to an embodiment of the present invention includes: an outer housing 1, an air inlet 11, an air outlet 12, an air intake 21, an air outlet 22, an inner housing 2, and a motor body (not shown in the figure); a sealed cavity is formed inside the outer housing 1, and a plurality of air inlets 11 and a plurality of air outlets 12 are provided on the side walls on the left and right sides of the outer housing 1; the inner housing 2 is fixedly arranged in the sealed cavity along the axial direction of the outer housing 1, and the end faces at the front and rear ends of the inner housing 2 are respectively fixedly connected to the inner wall at the head end of the outer housing 1 and the inner wall at the tail end of the outer housing 1, so that the inner cavity of the inner housing 2 forms a closed cavity. A plurality of air intakes 21 and air outlets 22 communicating with the inner cavity of the inner housing 2 are provided on the inner housing 2, and a plurality of air intakes 21 and a plurality of air outlets 22 all face the top wall of the inner cavity of the outer housing 1; the motor body is arranged inside the inner housing 2, and the head end of the motor shaft 25 of the motor body extends out of the head end face of the outer housing 1; in this embodiment, by arranging the air inlets 11 and air outlets 12 provided on the outer housing 1 and the air intakes 21 and air outlets 22 provided on the inner housing 2 in a staggered manner, splashing of aqueous solution into the inner cavity of the inner housing 2 is prevented, which may cause a circuit failure of the motor body, thereby enhancing the waterproof performance of the device.

[0105] Furthermore, as Figures 1 to 3As shown in the figure, the present device further includes: a partition plate 23, a first diversion cavity 241, a second diversion cavity 242, a plurality of fins 24, a pair of drain ports, and a pair of switch components; the partition plate 23 is fixedly arranged on the circumferential side wall of the inner housing 2, and the outer circumference of the partition plate 23 is fixedly connected to the inner wall of the outer housing 1, so as to divide the cavity between the outer housing 1 and the inner housing 2 into a first diversion cavity 241 and a second diversion cavity 242. The first diversion cavity 241 communicates with a plurality of air inlets 11 and a plurality of air inlets 21, and the second diversion cavity 242 communicates with a plurality of air outlets 12 and a plurality of air outlets 22; a plurality of fins 24 are fixedly arranged on the circumferential side wall of the inner housing 2, and all the plurality of fins 24 are fixedly connected to the inner wall of the outer housing 1. Any one of the air inlets 21 or the air outlets 22 is located between a pair of adjacent fins 24, so as to use the fins 24 to block the air inlets 21 and the air outlets 22, so as to prevent the aqueous solution from splashing into the inner cavity of the inner housing 2 through the air inlets 21 or the air outlets 22. In this embodiment, the fins 24, the inner housing 2, and the outer housing 1 are all made of metal materials with high thermal conductivity; a plurality of pits are provided on the outer surface of the inner housing 2 and the outer surface of the fins 24, so as to enhance the adhesion ability of the outer surfaces of the inner housing 2 and the fins 24 to the aqueous solution, so that the aqueous solution entering the inner cavity of the outer housing 1 through the air inlets 11 or the air outlets 12 adheres to the outer surface of the inner housing 2 or the fins 24, and the heat of the inner housing 2 is absorbed by the evaporation of the aqueous solution; a pair of drain ports 31 are opened on the outer wall of the outer housing 1, the drain ports 31 communicate with the bottom of the inner cavity of the outer housing 1, and the pair of drain ports 31 are arranged on both sides of the partition plate 23, and are used for discharging the aqueous solution accumulated in the first diversion cavity 241 and the second diversion cavity 242;

[0106] A pair of switch components 32 are fixedly arranged on the inner wall of the outer housing 1, and the pair of switch components 32 respectively match the positions of the pair of drain ports 31, and are used for controlling the opening and closing of the drain ports 31.

[0107] Preferably, as Figures 1 to 3 shown, the switch component 32 includes: a pair of linear modules 321 and a gate plate 322; the pair of linear modules 321 are fixedly arranged on the bottom wall of the inner cavity of the outer housing 1 and are arranged on both sides of the drain port 31; the gate plate 322 is slidably arranged on the bottom wall of the inner cavity of the outer housing 1 and is connected to the execution ends of the pair of linear modules 321, and is used for blocking the drain port 31.

[0108] When the device is operating, air flows into the first diversion cavity 241 through the air inlet 11, then into the inner cavity of the inner housing 2 through the air intake 21. Then, the air flows out to the second diversion cavity 242 through the air outlet 22 and then out to the external environment through the air outlet 12. When the aqueous solution splashes into the inner cavity of the outer housing 1 through the air inlet 11 or the air outlet 12, it is blocked by the inner housing 2 and the fins 24, and slides down along the guide of the outer wall of the inner housing 2 and the fins 24 and accumulates at the bottom of the inner cavity of the outer housing 1. The user can drive the shutter 322 to slide by controlling the linear module 321, so as to open the drain port 31 and drain the aqueous solution accumulated at the bottom of the inner cavity of the outer housing 1 through the drain port 31.

[0109] Embodiment 2

[0110] Specifically, as shown in Figure 1 , 2 , Figures 4 to 7, on the basis of Embodiment 1, this embodiment further includes: a tail-end housing 4, an air intake window (not shown in the figure), a waterproof and breathable filter element 41, a plurality of plugging modules 5, a transmission shaft 6, a fan blade 61, a plurality of air intake holes 13, a transmission module 7, and a gas supply module 8. The tail-end housing 4 is fixedly arranged at the tail end of the outer housing 1. The air intake window is opened on the outer wall of the tail-end housing 4, and the air intake window communicates with the inner cavity of the tail-end housing 4. The waterproof and breathable filter element 41 is fixedly arranged in the air intake window for isolating the inner cavity of the tail-end housing 4 from the external environment. A plurality of plugging modules 5 are arranged on the inner wall of the outer housing 1, and the plurality of plugging modules 5 correspond to the positions of the plurality of air inlets 11 one by one for controlling the opening and closing of the air inlets 11. The transmission shaft 6 is movably arranged in the inner cavity of the tail-end housing 4, and the axis of the transmission shaft 6 is collinear with the axis of the motor shaft 25 of the motor main body. The fan blade 61 is fixedly sleeved on the transmission shaft 6. A plurality of air intake holes 13 are opened on the end face of the tail end of the outer housing 1, and any one of the air intake holes 13 penetrates the outer wall of the outer housing 1 to communicate the cavity between the outer housing 1 and the inner housing 2. The transmission module 7 is arranged in the inner cavity of the tail-end housing 4, and the transmission module 7 is connected to the transmission shaft 6 for fixedly assembling the transmission shaft 6 at the tail end of the motor shaft 25. The gas supply module 8 is arranged in the inner cavity of the tail-end housing 4, and the gas supply module 8 is connected to the plurality of plugging modules 5 and the transmission module 7. In this embodiment, the gas supply module 8 can be selected as an air pump.

[0111] Further, as shown in Figure 1 , 2As shown in FIGS. 4, 5, and 9, the plugging module 5 includes: a plurality of guide rods 51, a baffle 52, a bearing bracket 53, a first airbag 54, a first air outlet hole (not shown in the figure), and a first spring (not shown in the figure); the plurality of guide rods 51 are fixedly arranged on the inner wall of the outer shell 1; the baffle 52 is movably arranged in the inner cavity of the outer shell 1, the position of the baffle 52 corresponds to that of the air inlet 11, the baffle 52 is slidably connected with the plurality of guide rods 51 and is used for closing the air inlet 11; the bearing bracket 53 is fixedly arranged on the plurality of guide rods 51; the first airbag 54 is fixedly arranged on the bearing bracket 53, the first airbag 54 is located between the baffle 52 and the bearing bracket 53, the first airbag 54 is fixedly connected with the baffle 52, the first airbag 54 is connected with the air supply module 8 and is used for driving the baffle 52 to slide along the guidance of the guide rod 51; the first air outlet hole is opened on the outer wall of the first airbag 54 facing the inner shell 2, the first air outlet hole is communicated with the inner cavity of the first airbag 54, the maximum exhaust efficiency of the first air outlet hole is less than the maximum inflation efficiency of the air supply module 8 to the first airbag 54, and is used for discharging the air inside the first airbag 54. Moreover, the gas flowing out through the first air outlet hole blows towards the outer surface of the inner shell 2, which is beneficial to promoting the evaporation and heat absorption of the aqueous solution attached to the outer surface of the inner shell, and can promote the air flow inside the first diversion cavity 241; the first spring is fixedly arranged inside the first airbag 54, and both ends of the first spring are fixedly connected with the inner wall of the first airbag 54 and are used for driving the first airbag 54 to contract and reset.

[0112] Further, as Figure 1 , 2, as shown in FIGS. 4 to 8, the transmission module 7 includes: an assembly slot 71, an assembly section 711, a transmission section 712, a first bearing 72, a first movable plate 73, a second spring 74, a first assembly bracket 75 and a transmission component; the assembly slot 71 is opened at the head end of the transmission shaft 6, and the tail end of the motor shaft 25 is movably inserted into the assembly slot 71; the assembly slot 71 is composed of an assembly section 711 and a transmission section 712, the transmission section 712 is located between the assembly section 711 and the tail end of the transmission shaft 6, the inner cavity shape of the transmission section 712 is a prism, and the radial cross-sectional shape of the transmission section 712 matches the radial cross-sectional shape of the tail end of the motor shaft 25; the first bearing 72 is movably sleeved on the tail end of the motor shaft 25, the outer ring of the first bearing 72 is fixedly connected to the inner wall of the assembly slot 71, the first bearing 72 is located in the inner cavity of the assembly section 711, preferably, in this embodiment, the radial cross-sectional shape of the inner cavity of the inner ring of the first bearing 72 matches the radial cross-sectional shape of the tail end of the motor shaft 25, and the tail end of the motor shaft 25 is movably inserted into the inner cavity of the inner ring of the first bearing 72 to achieve the purpose of using the first bearing 72 to support the transmission shaft 6 for both rotation and sliding; the first movable plate 73 is movably arranged in the inner cavity of the transmission section 712, the first movable plate 73 is arranged along the radial direction of the transmission shaft 6, and the radial cross-sectional shape of the first movable plate 73 matches the radial cross-sectional shape of the inner cavity of the transmission section 712; the second spring 74 is arranged in the inner cavity of the transmission section 712, the second spring 74 is located between the first movable plate 73 and the tail end of the transmission shaft 6, one end of the second spring 74 is connected to the first movable plate 73, and the other end of the second spring 74 is connected to the inner wall of the assembly slot 71 for elastically supporting the first movable plate 73; the first assembly bracket 75 is fixedly arranged on the inner wall of the tail end housing 4; the transmission component is arranged on the first assembly bracket 75, the transmission component is connected to the transmission shaft 6, and the transmission component is connected to the air supply module 8 for driving the transmission shaft 6 to axially displace along the motor shaft 25.

[0113] Further, as Figure 1 , 2, as shown in FIGS. 4 to 8, the transmission assembly includes: an assembly convex groove 761, a second bearing 762, a second airbag 763, a second air outlet hole (not shown in the figure), a second movable plate 764 and a thrust ball bearing 765; the assembly convex groove 761 is fixedly arranged on the first assembly bracket 75, and the assembly convex groove 761 is movably inserted with the transmission shaft 6; the second bearing 762 is sleeved at the tail end of the transmission shaft 6, the inner ring of the second bearing 762 is fixedly connected with the transmission shaft 6, and the outer ring surface of the outer ring of the second bearing 762 is attached to the circumferential inner wall of the assembly convex groove 761, so as to realize the purpose of simultaneously rotating and slidingly supporting the transmission shaft 6 by using the second bearing 762; the second airbag 763 is arranged in the inner cavity of the assembly convex groove 761, the second airbag 763 is located between the transmission shaft 6 and the first assembly bracket 75, and the second airbag 763 is connected with the air supply module 8; the second air outlet hole is opened on the second airbag 763, and the exhaust efficiency of the second air outlet hole is less than the inflation efficiency of the air supply module 8 to the second airbag 763, and is used for discharging the air in the inner cavity of the second airbag 763; the second movable plate 764 is movably arranged in the inner cavity of the assembly convex groove 761, and the second movable plate 764 is located between the transmission shaft 6 and the second airbag 763; the thrust ball bearing 765 is movably arranged in the inner cavity of the assembly convex groove 761, the seat ring of the thrust ball bearing 765 is fixedly connected with the second movable plate 764, and the shaft ring of the thrust ball bearing 765 is connected with the tail end of the transmission shaft 6.

[0114] During the operation of the equipment, the user can control the air supply module 8 to inflate the first airbag 54 of the plugging module 5, so that the first airbag 54 expands against the elastic force of the first spring. After the first airbag 54 is inflated and expanded, it pushes the baffle 52 to slide along the guide of the guide rod 51 towards the side of the air inlet 11 until the baffle 52 abuts against the inner wall of the outer shell, so as to plug the air inlet 11 to prevent the aqueous solution from entering the inner cavity of the outer shell 1 through the air inlet 11. During the inflation and expansion of the first airbag 54, part of the air inside the first airbag 54 is discharged through the first air outlet hole; at the same time, the air supply module 8 inflates the second airbag 763 of the transmission module 7, so that the second airbag 763 is inflated and expanded. During the inflation and expansion of the second airbag 763, the transmission shaft 6 is driven to extend towards the direction of the motor shaft 25 by pushing the second movable plate 764 and the thrust ball bearing 765 until the tail end of the motor shaft 25 is inserted into the transmission section 712 of the assembly slot 71, so that the transmission shaft 6 and the fan blade 61 rotate synchronously with the motor shaft 25 under the drive of the motor shaft 25. Furthermore, by driving the fan blade 61 to rotate, the outside air is inhaled into the inner cavity of the tail end shell 4 through the waterproof and breathable filter element 41, and the air in the inner cavity of the tail end shell 4 is blown into the first diversion cavity 241 through the air inlet hole 13, promoting the air circulation inside the first diversion cavity 241, accelerating the evaporation and heat absorption of the aqueous solution attached to the outer wall surface of the inner shell 2 and the fins 24, and at the same time overcoming the resistance of the waterproof and breathable filter element 41 to extract the outside air to ensure the heat dissipation effect of the motor.

[0115] Embodiment III

[0116] Specifically, as shown in Figure 1 , 2 , 4 - 7, and 10, this embodiment is based on Embodiment II, and the difference lies in that the air supply module 8 is further disclosed. The air supply module 8 includes: a second assembly bracket 81, a pair of air supply components, a power component, and a buffer tank 84; the second assembly bracket 81 is fixedly arranged on the inner wall of the tail-end housing 4; the buffer tank 84 is fixedly arranged on the second assembly bracket 81, and the buffer tank 84 is connected to the first air bags 54 of several plugging modules 5 for supplying air to the first air bags 54; a pair of air supply components are arranged on the second assembly bracket 81, and any one of the air supply components is simultaneously connected to the buffer tank 84 and the second air bag 763 of the transmission module 7 for supplying air to the buffer tank 84 and the second air bag 763; the power component is arranged on the second assembly bracket 81, and the power component is connected to the air supply component for driving the air supply component to operate. In this embodiment, the power component can select a linear drive device to drive the air supply component, and the linear drive device includes but is not limited to a ball screw type linear module.

[0117] Furthermore, as shown in Figure 1 , 2 , 4 - 7, 10 - 12, the air supply component includes: a bearing frame 821, a third air bag 822, an air inlet nozzle 823, a first one-way valve (not shown in the figure), a pair of air outlet nozzles 824, a second one-way valve (not shown in the figure), and a first electric control valve 8241; the bearing frame 821 is fixedly arranged on the second assembly bracket 81; the third air bag 822 is arranged in the inner cavity of the bearing frame 821, and the third air bag 822 is connected to the power component; the air inlet nozzle 823 is arranged on the third air bag 822, the air outlet end of the air inlet nozzle 823 is communicated with the inner cavity of the third air bag 822, and the air inlet end of the air inlet nozzle 823 is communicated with the inner cavity of the tail-end housing 4; the first one-way valve is arranged on the air inlet nozzle 823 for restricting the flow direction of the gas flowing through the air inlet nozzle 823, so that the external air can only flow into the inner cavity of the third air bag 823 through the air inlet nozzle 823; a pair of air outlet nozzles 824 are arranged on the third air bag 822, and the air inlet ends of the pair of air outlet nozzles 824 are both communicated with the inner cavity of the third air bag 822. The air outlet end of one of the air outlet nozzles 824 is connected to the buffer tank 84, and the air outlet end of the other air outlet nozzle 824 is communicated with the second air bag 763 of the transmission module 7 for supplying air to the buffer tank 84 and the second air bag 763 of the transmission module 7; a pair of second one-way valves are respectively arranged on the pair of air outlet nozzles 824 for restricting the flow direction of the gas flowing through the air outlet nozzles 824, and the gas in the third air bag 823 can only flow out of the inner cavity of the third air bag 823 through the pair of air outlet nozzles 824; the first electric control valve 8241 is arranged on the air outlet nozzle 824 connected to the second air bag 763 for controlling the on-off of the air outlet nozzle 824 connected to the second air bag 763.

[0118] Further, as Figure 6 , 10, as shown in FIGS. 11 and 12, the buffer tank 84 includes: a tank body 841, a pair of buffer chambers 842, a pair of guide rods 843, a pair of pistons 844, a pair of return springs 845, a pair of intake pipes 846, a pair of second electromagnetic control valves 847, a pair of exhaust pipes 848, a pair of third electromagnetic control valves 849, a pair of diversion pipes 850, a pair of spray pipelines 851, a pair of third one-way valves 852, a pair of water suction pipes 853 and a pair of fourth one-way valves 854; the tank body 841 is fixedly arranged on the second assembly bracket 81, and a pair of buffer chambers 842 are arranged inside the tank body 841; a pair of guide rods 843 are respectively fixedly arranged on the inner walls of the pair of buffer chambers 842, and the axes of the pair of guide rods 843 are collinear; a pair of pistons 844 are respectively movably arranged in the pair of buffer chambers 842, the pair of pistons 844 are respectively slidably connected with the pair of guide rods 843, and the radial cross-sectional shapes of the pistons 844 and the buffer chambers 842 match; a pair of return springs 845 are respectively arranged in the pair of buffer chambers 842, the pair of pistons 844 are located between the pair of return springs 845, one end of the return spring 845 is connected with the piston 844, and the other end of the return spring 845 is connected with the inner wall of the tank body 841 for elastically supporting the piston 844; a pair of intake pipes 846 are arranged on the tank body 841, the output ends of the pair of intake pipes 846 are respectively communicated with the pair of buffer chambers 842, the output ends of the pair of intake pipes 846 are located between the pair of pistons 844, and the input ends of the pair of intake pipes 846 are respectively communicated with the air outlet nozzles 824 of the third air bags 822 of the pair of air supply assemblies for supplying air to the buffer chambers 842; a pair of second electromagnetic control valves 847 are arranged on the tank body 841, the input ends of the pair of second electromagnetic control valves 847 are respectively communicated with the pair of buffer chambers 842, the input ends of the pair of second electromagnetic control valves 847 are located between the pair of pistons 844 for discharging the gas in the buffer chambers 842; a pair of exhaust pipes 848 are arranged on the tank body 841, the input ends of the pair of exhaust pipes 848 are respectively communicated with the pair of buffer chambers 842, the input ends of the exhaust pipes 848 are located between the pair of pistons 844, and the output ends of the exhaust pipes 848 are communicated with the first air bag 54 for supplying air to the first air bag 54; a pair of third electromagnetic control valves 849 are respectively arranged on the pair of exhaust pipes 848 for controlling the on-off of the exhaust pipes 848; a pair of diversion pipes 850 are arranged on the tank body 841, the head ends of the pair of diversion pipes 850 are respectively communicated with the pair of buffer chambers 842, and the pair of pistons 844 are located between the head ends of the pair of diversion pipes 850; a pair of spray pipelines 851 are fixedly arranged on the inner side shell 2, the main sections 8512 of the pair of spray pipelines 851 are respectively communicated with the pair of diversion pipes 850, several branch sections 8511 of any one spray pipeline 851 are attached to the circumferential side wall of the inner side shell 2, each branch section 8511 of the spray pipeline 851 is located between a pair of adjacent fins 24, and several water outlet holes (not shown in the figure) are formed in the branch section 8511 of the spray pipeline 851, and any one water outlet hole faces the circumferential side wall of the inner side shell 2;A pair of third one-way valves 852 are respectively arranged on the dry sections 8512 of a pair of spray pipelines 851, and are used to restrict the flow direction of the liquid or gas flowing through the branch sections 8511 of the spray pipelines 851, so that the branch sections 8511 of the spray pipelines 851 can only be used to discharge the gas or liquid in the inner cavity of the dry sections 8512 of the spray pipelines 851; A pair of water suction pipes 853 are fixedly arranged on the inner wall of the outer shell 1. The water suction pipes 853 are located at the bottom of the inner cavity of the outer shell 1. The output ends of the pair of water suction pipes 853 are respectively communicated with a pair of guide pipes 850. A plurality of water inlet holes (not shown in the figure) communicated with the inner cavity of the water suction pipes 853 are formed on the circumferential side walls of each water suction pipe 853, and are used to extract the aqueous solution stored in the cavity between the outer shell 1 and the inner shell 2; A pair of fourth one-way valves 854 are respectively arranged on the pair of water suction pipes 853, and are used to restrict the flow direction of the liquid or gas flowing through the water suction pipes 853, so that the water suction pipes 853 can only be used to transmit gas or liquid into the guide pipes 850.;

[0119] When the device is running, the power assembly drives the third airbag 822 to reciprocate and contract and extend. During the extension of the third airbag 822, the third airbag 822 draws the air in the inner cavity of the tail end shell 4 into the inner cavity of the third airbag 822 through the air inlet nozzle 823. During the contraction of the third airbag 822, the third airbag 822 injects its internal air into the inner cavity of the first airbag 54 and the pair of buffer cavities 842 of the buffer tank 8484 through a pair of air outlet nozzles 824. When the air in the third airbag 822 passes through After the air inlet pipe 846 is injected into the buffer chamber 842, it is injected into the first airbag 54 through the exhaust pipe 848 to achieve the purpose of inflating the first airbag 54 and the second airbag 763; because the exhaust efficiency of the first air outlet is lower than the inflation efficiency of the air inlet pipe 846, as the time of inflation of the air inlet pipe 846 into the buffer chamber 842 increases, the air pressure on the side of the piston 844 in the buffer chamber 842 facing away from the guide tube 850 also increases, thereby driving the piston 844 to face the side of the guide tube 850 The second electric-controlled valve 847 is opened for a period of time to discharge part of the gas in the buffer chamber 842 on the side of the piston 844 facing away from the guide tube 850, so that when the second electric-controlled valve 847 is in the open state, the piston 844 slides away from the guide tube 850 under the elastic force of the return spring 845, and when the second electric-controlled valve 847 is in the closed state, the piston 844 faces the guide tube under the pressure of the third airbag 822. 850 slides on one side; in the process of the piston 844 sliding back and forth periodically along the guide of the guide rod 843, the air pressure environment in the inner cavity of the guide tube 850 is periodically switched between the positive pressure environment state and the negative pressure environment state, and then the aqueous solution accumulated in the first guide cavity 241 and the second guide cavity 242 is continuously extracted through the pumping pipe 853, and it is sprayed on the circumferential side wall of the inner shell 2 through the branch section 8511 of the spray pipeline 851, so as to further enhance the cooling effect on the inner shell 2.

[0120] In this embodiment, the user can control the first electrically controlled valve 8241 to close the air outlet 824 connected to the second air bag 763 and control the third electrically controlled valve 849 to close the exhaust pipe 848 connected to the first air bag 54, thereby stopping the air supply to the first air bag 54 and the second air bag 763, so that the first air bag 54 is driven by the elastic force of the first spring to discharge the internal air through the first air outlet, driving the baffle 52 to slide along the guide rod 51 to reset, so that the air inlet 11 is opened, and at the same time, the second air bag 763 is driven by the elastic force of the second spring 74 to discharge the internal air through the second air outlet, thereby disengaging the tail end of the motor shaft 25 from the transmission section 712 of the assembly slot 71, cutting off the torque transmission between the transmission shaft 6 and the motor shaft 25, reducing the load on the motor shaft 25, and reducing the operating energy consumption of the device.

[0121] Embodiment 4

[0122] Specifically, as Figure 1 , 2 , 4, 5, and 12 show, this embodiment is based on Embodiment 3, and the difference is that it further discloses a power assembly, which includes: a pair of sliding grooves 831 opened on the second assembly bracket 81, and the pair of sliding grooves 831 are arranged in parallel; a pair of racks 832 respectively slidably connected to the pair of sliding grooves 831; a pair of connectors 833 respectively fixedly arranged on the pair of racks 832, and the pair of connectors 833 are respectively connected to the third air bags 822 of the pair of air supply assemblies for driving the third air bags 822 to expand or contract; an assembly shaft 834 arranged in the inner cavity of the tail-end housing 4, one end of the assembly shaft 834 is rotatably connected to the second assembly bracket 81, and the other end of the assembly shaft 834 is rotatably connected to the inner wall of the tail-end housing 4; a gear 835 fixedly sleeved on the assembly shaft 834, and the gear 835 meshes with the pair of racks 832 for driving the pair of racks 832 to reciprocally slide along the guidance of the pair of sliding grooves 831; a swing member 836 arranged in the inner cavity of the tail-end housing 4, the top end of the swing member 836 is fixedly connected to the assembly shaft 834, and the center of gravity of the swing member 836 is located at the bottom end of the swing member 836 for driving the assembly shaft 834 to rotate.

[0123] During the driving process of the vehicle, the swing member 836 swings under the action of an external force, thereby driving the assembly shaft 834 and the gear 835 to rotate. During the rotation of the gear 835, by meshing with the rack 832, it drives the rack 832 to reciprocally slide along the guidance of the sliding groove, and further uses the connectors 833 arranged on the rack 832 to alternately drive the third air bag 822 to reciprocally expand and contract. The swing member 836 of this embodiment converts the kinetic energy generated during the driving process of the vehicle into mechanical energy for driving the assembly shaft 834 to rotate, further saving the operating energy consumption of this device.

[0124] Above, with reference to Figures 1 to 13 described is a servo motor with good waterproof performance according to an embodiment of the present invention, having the following beneficial effects:

[0125] 1. By staggeredly arranging the air inlet 11 and the air outlet 12 opened on the outer shell 1 and the air inlet 21 and the air outlet 22 opened on the inner shell 2 of this device, the possibility that the aqueous solution splashing into the inner cavity of the outer shell 1 through the air inlet 11 or the air outlet 12 directly enters the inner cavity of the inner shell 2 through the air inlet 21 or the air outlet 22, resulting in a circuit failure of the motor main body, is reduced. Furthermore, the waterproof performance of this device is enhanced, and at the same time, the heat dissipation effect of this device is ensured, avoiding the problem of poor heat dissipation effect existing in the prior art.

[0126] 2. By setting the plugging module 5, after the air supply module 8 inflates the first airbag 54 of the plugging module 5, the first airbag 54 expands and presses the baffle 52 to close the air inlet 11, preventing muddy water splashed up during vehicle driving from entering the inner cavity of the outer shell 1 through the air inlet 11, and further enhancing the waterproof performance of the device.

[0127] 3. By setting a tail-end shell 4 at the tail end of the outer shell 1, and arranging a transmission shaft 6, a fan blade 61, a transmission module 7 and an air supply module 8 inside the tail-end shell 4, the air supply module 8 is used to drive the transmission module 7 to fixedly assemble the transmission shaft 6 to the tail end of the motor shaft 25. The power of the motor shaft 25 drives the transmission shaft 6 and the fan blade 61 to rotate synchronously. The rotation of the fan blade 61 is used to overcome the resistance of the waterproof and breathable filter element 41 to extract external air, and the air in the tail-end shell 4 is transported to the first diversion cavity 241 through the air inlet hole 13 to promote the air flow circulation inside the outer shell 1 to ensure the heat dissipation effect of the device. Secondly, the device can fixedly assemble the transmission shaft 6 to the tail end of the motor shaft 25 when needed by controlling the transmission module 7 and the air supply module 8, and keep the transmission shaft 6 disengaged from the motor shaft 25 when not needed to save the operation energy consumption of the device.

[0128] 4. The device temporarily stores the gas input from the third airbag 822 to the first airbag 54 through the buffer tank 84, so as to input the gas stored in the buffer tank 84 into the first airbag 54 when needed. And by setting a second electric control valve 847 on the tank body 841 to regularly release the gas in the buffer cavity 842 to prevent the internal air pressure of the buffer tank 84 from being too high. At the same time, it can control the piston 844 to reciprocate periodically, and then use the diversion pipe 850 and the water suction pipe 853 to extract the aqueous solution accumulated in the inner cavity of the outer shell 1 and spray it on the outer surface of the inner shell 2 through the spray pipeline 851, thereby enhancing the heat dissipation effect of the device on the inner shell 2.

[0129] It should be noted that in this specification, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0130] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A servo motor with good waterproof performance, characterized in that: Include: An outer shell has a sealed cavity formed inside, and a plurality of air inlets and a plurality of air outlets are provided on the side wall of the outer shell; An inner shell is fixedly disposed in the closed cavity along the axial direction of the outer shell, and a plurality of air inlets and a plurality of air outlets are provided on the inner shell, and the plurality of air inlets and the plurality of air outlets all face the inner cavity top wall of the outer shell; The motor body is arranged inside the inner shell.

2. A servo motor with good waterproofness as claimed in claim 1, characterized in that: Also includes: a partition, fixedly arranged on the circumferential side wall of the inner shell, the partition separating the cavity between the outer shell and the inner shell to form a first guide cavity and a second guide cavity, the first guide cavity communicating with the plurality of air inlets and the plurality of air inlets, and the second guide cavity communicating with the plurality of air outlets and the plurality of air outlets; A plurality of fins are fixedly arranged on the circumferential side wall of the inner shell, and the plurality of fins are fixedly connected to the inner wall of the outer shell; The outer surface of the inner shell and the outer surface of the fin are both provided with a plurality of pits; A pair of drain ports are provided on the outer wall of the outer shell, the drain ports are communicated with the bottom of the inner cavity of the outer shell, and the pair of drain ports are arranged on both sides of the partition plate, and are used to discharge the aqueous solution stored in the first guide cavity and the second guide cavity; A pair of switch components are fixedly arranged on the inner wall of the outer shell, and the pair of switch components are matched with the positions of the pair of drain ports respectively, and are used to control the switch of the drain ports.

3. A servo motor with good waterproofness as claimed in claim 1, characterized in that: Also includes: A tail end housing, fixedly disposed at the tail end of the outer housing; An air intake window is provided on the outer wall of the tail end shell, and the air intake window is communicated with the inner cavity of the tail end shell; A waterproof and breathable filter element, fixedly arranged in the air inlet window, for isolating the inner cavity of the tail end housing from the external environment; A plurality of blocking modules are arranged on the inner wall of the outer shell, the plurality of blocking modules correspond to the positions of the plurality of air inlets one by one, and are used to control the opening and closing of the air inlets; A transmission shaft, movably disposed in the inner cavity of the tail end housing, wherein the axis of the transmission shaft is colinear with the axis of the motor shaft of the motor body; The fan blades are fixedly sleeved on the transmission shaft; A plurality of air inlet holes are provided on the rear end surface of the outer shell, and any one of the air inlet holes penetrates the outer wall of the outer shell and communicates with the cavity between the outer shell and the inner shell; A transmission module is arranged in the inner cavity of the tail end housing, the transmission module is connected to the transmission shaft, and is used to fix the transmission shaft to the tail end of the motor shaft; An air supply module is arranged in the inner cavity of the tail end shell, and the air supply module is connected to the plurality of blocking modules and the transmission module.

4. A servo motor with good waterproofness as claimed in claim 3, characterized in that: The blocking module comprises: A plurality of guide rods are fixedly arranged on the inner wall of the outer shell; a baffle, movably disposed in the inner cavity of the outer shell, the baffle corresponding to the position of the air inlet, the baffle being slidably connected to the plurality of guide rods for closing the air inlet; A load-bearing bracket, fixedly arranged on the plurality of guide rods; A first airbag, fixedly disposed on the supporting bracket, the first airbag is located between the baffle and the supporting bracket, the first airbag is fixedly connected to the baffle, and the first airbag is connected to the air supply module, and is used to drive the baffle to slide along the guide of the guide rod; A first air outlet hole is provided on the first airbag and is used to discharge the air inside the first airbag; The first spring is fixedly arranged inside the first airbag, and both ends of the first spring are fixedly connected to the inner wall of the first airbag, so as to drive the first airbag to shrink and reset.

5. A servo motor with good waterproofness as claimed in claim 4, characterized in that: The transmission module comprises: An assembly slot is provided at the head end of the transmission shaft, and the tail end of the motor shaft is movably plugged into the assembly slot; The assembly slot is composed of an assembly section and a transmission section, the transmission section is located between the assembly section and the tail end of the transmission shaft, the inner cavity of the transmission section is in the shape of a prism, and the transmission section matches the radial cross-sectional shape of the tail end of the motor shaft; A first bearing, which is movably sleeved at the tail end of the motor shaft, an outer ring of the first bearing is fixedly connected to the inner wall of the assembly slot, and the first bearing is located in the inner cavity of the assembly section; A first movable plate, movably disposed in the inner cavity of the transmission section, wherein the first movable plate matches a radial cross-sectional shape of the inner cavity of the transmission section; a second spring, arranged in the inner cavity of the transmission section, the second spring being located between the movable plate and the tail end of the transmission shaft, one end of the second spring being connected to the first movable plate, and the other end of the second spring being connected to the inner wall of the assembly slot, for elastically supporting the first movable plate; A first assembly bracket is fixedly arranged on the inner wall of the tail end housing; A transmission assembly is arranged on the first assembly bracket, the transmission assembly is connected to the transmission shaft, and the transmission assembly is connected to the air supply module, and is used to drive the transmission shaft to move axially along the motor shaft.

6. A servo motor with good waterproofness as claimed in claim 5, characterized in that: The transmission assembly comprises: An assembly convex groove is fixedly arranged on the first assembly bracket, and the assembly convex groove is movably plugged with the transmission shaft; A second bearing is sleeved on the rear end of the transmission shaft, the inner ring of the second bearing is fixedly connected to the transmission shaft, and the outer ring of the second bearing abuts against the circumferential inner wall of the mounting convex groove; A second airbag is disposed in the inner cavity of the assembly convex groove, the second airbag is located between the transmission shaft and the first assembly bracket, and the second airbag is connected to the air supply module; A second air outlet hole is provided on the second airbag and is used to discharge the air in the inner cavity of the second airbag; A second movable plate, movably disposed in the inner cavity of the assembly convex groove, the second movable plate being located between the transmission shaft and the second airbag; A thrust ball bearing is movably arranged in the inner cavity of the assembly convex groove, the seat ring of the thrust ball bearing is fixedly connected to the second movable plate, and the shaft ring of the thrust ball bearing is connected to the tail end of the transmission shaft.

7. A servo motor with good waterproofness as claimed in claim 6, characterized in that: The air supply module comprises: A second assembly bracket is fixedly arranged on the inner wall of the tail end housing; A buffer tank, fixedly mounted on the second assembly bracket, the buffer tank being connected to the first airbags of the plurality of blocking modules and being used to supply air to the first airbags; a pair of air supply components, arranged on the second assembly bracket, any one of the air supply components is connected to the buffer tank and the second air bag, and is used to supply air to the buffer tank and the second air bag; A power assembly is arranged on the second assembly bracket, and the power assembly is connected to the air supply assembly to drive the air supply assembly to operate.

8. A servo motor with good waterproofness as claimed in claim 7, characterized in that: The gas supply assembly comprises: A load-bearing frame, fixedly arranged on the second assembly bracket; A third airbag is arranged in the inner cavity of the carrying frame, and the third airbag is connected to the power assembly; An air inlet nozzle is arranged on the third airbag, an air outlet end of the air inlet nozzle is communicated with the inner cavity of the third airbag, and an air inlet end of the air inlet nozzle is communicated with the inner cavity of the tail end shell; a first one-way valve, disposed on the air inlet nozzle, for limiting the flow direction of the gas flowing through the air inlet nozzle; A pair of air outlet nozzles are arranged on the third airbag, the air inlet ends of the pair of air outlet nozzles are both connected to the inner cavity of the third airbag, the air outlet end of one of the air outlet nozzles is connected to the buffer tank, and the air outlet end of the other air outlet nozzle is connected to the second airbag, for supplying air to the buffer tank and the second airbag; a pair of second one-way valves, respectively disposed on the pair of gas outlet nozzles, for limiting the flow direction of the gas flowing through the gas outlet nozzles; The first electrically controlled valve is arranged on the air outlet nozzle connected to the second air bag, and is used for controlling the on and off of the air outlet nozzle connected to the second air bag.

9. A servo motor with good waterproofness as claimed in claim 8, characterized in that: The buffer tank comprises: A tank body, fixedly mounted on the second assembly bracket, wherein a pair of buffer chambers are arranged inside the tank body; A pair of guide rods, respectively fixedly arranged on the inner walls of the pair of buffer chambers, and the axes of the pair of guide rods are collinear; A pair of pistons, movably disposed in the pair of buffer chambers, respectively, the pair of pistons are slidably connected to the pair of guide rods, respectively, and the pistons match the radial cross-sectional shape of the buffer chambers; A pair of return springs are respectively arranged in the pair of buffer chambers, the pair of pistons are located between the pair of return springs, one end of the return spring is connected to the piston, and the other end of the return spring is connected to the inner wall of the tank body, for elastically supporting the piston; A pair of air inlet pipes, arranged on the tank body, the output ends of the pair of air inlet pipes are respectively communicated with the pair of buffer chambers, the output ends of the pair of air inlet pipes are located between the pair of pistons, and the input ends of the pair of air inlet pipes are respectively connected with the pair of air supply components; A pair of second electrically controlled valves, arranged on the tank body, wherein input ends of the pair of second electrically controlled valves are respectively communicated with the pair of buffer chambers, and the input ends of the pair of second electrically controlled valves are located between the pair of pistons; a pair of exhaust pipes, arranged on the tank body, wherein input ends of the pair of exhaust pipes are respectively communicated with the pair of buffer chambers, the input ends of the exhaust pipes are located between the pair of pistons, and output ends of the exhaust pipes are communicated with the first airbag for supplying air to the first airbag; A pair of third electrically controlled valves, respectively disposed on the pair of exhaust pipes, for controlling the on-off of the exhaust pipes; A pair of flow guide tubes, arranged on the tank body, the head ends of the pair of flow guide tubes are respectively communicated with the pair of buffer chambers, and the pair of pistons are located between the head ends of the pair of flow guide tubes; A pair of spray pipelines are fixedly arranged on the inner shell, the trunk sections of the pair of spray pipelines are respectively connected with the pair of guide pipes, and several branch sections of any one of the spray pipelines are attached to the circumferential side wall of the inner shell. Each branch section of the spray pipeline is provided with several water outlet holes, and any one of the water outlet holes faces the circumferential side wall of the inner shell; a pair of third one-way valves, respectively disposed on the trunk sections of the pair of spray pipelines, for limiting the flow direction of the liquid or gas flowing through the branch sections of the spray pipelines; A pair of water extraction pipes, fixedly arranged on the inner wall of the outer shell, the water extraction pipes are located at the bottom of the inner cavity of the outer shell, and the output ends of the pair of water extraction pipes are respectively connected to the pair of flow guide pipes for extracting the aqueous solution stored in the cavity between the outer shell and the inner shell; A pair of fourth one-way valves are respectively arranged on the pair of water pumping pipes, and are used to limit the flow direction of the liquid or gas flowing through the water pumping pipes.

10. A servo motor with good waterproofness as claimed in claim 8, characterized in that: The power assembly comprises: A pair of slide grooves are provided on the second assembly bracket, and the pair of slide grooves are arranged in parallel; A pair of racks, movably arranged on the second assembly bracket, the pair of racks being slidably connected to the pair of slide grooves respectively; A pair of connecting members, respectively fixedly disposed on the pair of racks, the pair of connecting members are respectively connected to the pair of air supply components, and are used to drive the pair of air supply components to operate; An assembly shaft is disposed in the inner cavity of the tail end housing, one end of the assembly shaft is rotatably connected to the second assembly bracket, and the other end of the assembly shaft is rotatably connected to the inner wall of the tail end housing; A gear, fixedly sleeved on the assembly shaft, the gear meshing with the pair of racks, and used to drive the pair of racks to slide back and forth along the guides of the pair of slide grooves; The swinging member is movably arranged in the inner cavity of the tail end shell, and the top end of the swinging member is fixedly connected to the assembly shaft to drive the assembly shaft to rotate.

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