A waterproof structure for driving motor of new energy vehicle

Abstract

The present application discloses a waterproof structure for a new energy vehicle drive motor, which relates to the field of motor waterproof technology, including a protective box and a motor, wherein a base is fixed to the bottom of the protective box, the motor is placed inside the protective box through a fixing frame, a rotating shaft is fixed to the output end of the motor, the rotating shaft extends to the outside of the protective box, a waterproof unit is provided at the right end of the protective box, and the waterproof unit is used to waterproof the motor; the waterproof unit has a turntable fixed to the right end of the rotating shaft, the turntable is located inside the first shell, and is used to throw water on the rotating shaft outward; a plurality of guide grooves are evenly opened on the surface of the turntable along its circumference, the guide groove is a triangular structure and its width gradually widens from the center of the turntable to the edge of the turntable; it can achieve the technical effects of enhanced waterproof effect, improved motor operation stability and reduced maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of motor waterproofing, and in particular to a waterproof structure for a drive motor of a new energy vehicle. Background Art

[0002] In the manufacturing process of new energy vehicles, the waterproof structure of the drive motor is crucial, affecting the vehicle's performance, safety and life. A good waterproof structure can prevent water intrusion, avoid short circuits, damage to the motor and control system, and maintain stable insulation performance. In addition, the waterproof structure can also reduce the failure rate, extend the life of the motor, reduce maintenance costs, and meet industry standards and regulatory requirements.

[0003] Regarding waterproof measures for driving motors, Chinese invention patent No. CN118282100B discloses a waterproof device that can increase the service life of the motor, including a protective box, a base fixedly connected to the bottom of the protective box, a motor body arranged in the protective box, a rotating shaft fixedly connected to the right side of the motor body, a mounting mechanism arranged at the bottom of the rotating shaft in the protective box, and a positioning mechanism arranged in the mounting mechanism; the invention uses the mounting mechanism to prevent external moisture from entering the protective box at the connection between the right fixed arc frame and the rotating shaft, and at the same time, the fixed arc frames on the upper and lower sides are connected to the outer ring of the rotating shaft through the arc-shaped rubber strips arranged on the inner side to seal the rotating shaft, which will not affect the rotation of the rotating shaft, so that the motor will not directly contact with external moisture, avoiding the motor short circuit caused by water while also preventing the corrosion of the motor casing caused by contact with water vapor, thereby increasing the service life of the motor.

[0004] Although the above scheme improves the waterproof performance of the drive motor to a certain extent, in actual use, since the existing rubber strip is sleeved on the outer ring of the rotating shaft to seal the rotating shaft to achieve the waterproof effect, during long-term use of the motor, the rubber strip is easily worn due to long-term friction contact with the rotating shaft, resulting in a gradual decrease in the sealing effect or even failure. This defect directly affects the waterproof performance of the motor, making it easy for water to enter the motor when running in a humid or watery environment, thereby causing short circuit, corrosion and other problems, seriously affecting the service life and operating stability of the motor. Summary of the Invention

[0005] This application solves the technical problems of poor waterproof effect, reduced motor operation stability and high maintenance cost in the prior art by providing a waterproof structure for a new energy vehicle drive motor, and achieves the technical effects of enhanced waterproof effect, improved motor operation stability and reduced maintenance cost.

[0006] The present application provides a waterproof structure for a new energy vehicle drive motor, comprising a protective box and a motor. A base is fixed to the bottom of the protective box, the motor is placed inside the protective box via a fixing frame, a rotating shaft is fixed to the output end of the motor, and the rotating shaft extends to the outside of the protective box. A waterproof unit is provided at the right end of the protective box, and the waterproof unit is used to waterproof the motor.

[0007] The waterproof unit includes a waterproof housing for waterproofing the rotating shaft, which is fixed to the right end of the protective box by short bolts. The waterproof housing includes a first housing, a second housing, a third housing, and a sealing gasket. The first housing, the second housing, and the third housing are fixedly connected to each other from right to left by long bolts. The first housing, the second housing, and the third housing are annular structures, all located outside the rotating shaft and on the same horizontal axis as the rotating shaft.

[0008] The waterproof unit has a turntable fixed at the right end of the rotating shaft. The turntable is located inside the first shell and is used to throw water on the rotating shaft outward; a plurality of guide grooves are evenly opened on the surface of the turntable along its circumference. The guide grooves are triangular in structure and their width gradually widens from the center of the turntable to the edge of the turntable.

[0009] Furthermore, the waterproof unit further includes a water removal component, which is fixed to the rotating shaft and located inside the third housing, and is used to promote the diffusion and drying of water vapor when the motor is running;

[0010] The dewatering assembly includes a fixed disk, a hinge seat and a flat rod; the fixed disk is a circular disk structure, fixed on the rotating shaft, and is used to connect and support the flat rod; there are multiple hinge seats, which are respectively rotatably connected to the right end surface of the fixed disk, and are evenly arranged along the circumference of the fixed disk for installing the flat rod; there are multiple flat rods, which correspond one to one with the hinge seats, and are evenly arranged along the circumference of the fixed disk for guiding water vapor and throwing out water during the rotation of the rotating shaft.

[0011] Furthermore, the rotating surface formed by the plurality of flat rods when rotating along with the rotating shaft is a conical arc surface, so that the heat generated when the motor is running and the water vapor on the rotating shaft are diffused and thrown outward along the conical arc surface formed by the plurality of flat rods.

[0012] Furthermore, an annular placement groove is provided on the left side of the second shell, and a sponge is fixed inside the annular placement groove. The sponge is an annular structure and is used to absorb water droplets thrown out from the flat rod.

[0013] Furthermore, the waterproof unit also includes an adjustment component and a deflection component. The adjustment component is arranged on the left side of the second shell and located on the inside of the sponge, and is used to dynamically adjust the radial size of the arc surface generated when the flat rod rotates. The deflection component is slidably connected to the inside of the fixed plate, and is used to adjust the deflection angle of the flat rod.

[0014] Furthermore, the regulating assembly includes an air bag and a spring coil;

[0015] There are multiple airbags with an arc-shaped structure, which are evenly arranged along the circumference of the second shell; the mainspring is arranged inside the second shell and inside the airbag, and its surface is made of magnetic material, which is used to achieve radial size changes under the action of the airbag.

[0016] Furthermore, an iron block is fixed to one end of the flat rod close to the sponge, which is used to adjust the radial size of the rotating arc surface of the flat rod by cooperating with the mainspring through magnetic attraction.

[0017] Furthermore, each of the airbags is connected to an external air pump through a pipe, and the outside of each airbag is wrapped with a U-shaped box structure, so that each airbag extends along the radial direction of the second shell in the expanded state and uniformly squeezes the mainspring to cause it to change radially. The length of the airbag extending along the radial direction of the rotating axis in the fully expanded state is 3 to 5 times the length in the initial state.

[0018] Further, the deflection assembly includes an adjustment disk, an adjustment column, a rotation knob and a connecting rod;

[0019] The adjusting disk is slidably connected to the inside of the fixed disk through an adjusting column; there are multiple adjusting columns, which are evenly arranged along the circumference of the adjusting disk and are used to adjust the rotation angle of the adjusting disk; there are multiple rotating knobs, which correspond one-to-one to the hinge seats and are fixedly connected to the corresponding hinge seats, and are respectively rotatably connected to the left side of the fixed disk; the connecting rod is an L-shaped structure and is provided in multiple numbers, all of which are evenly arranged along the circumference of the adjusting disk and correspond one-to-one to the rotating knobs, one end of which is fixedly connected to the corresponding rotating knob, and the other end is fixed to the right side of the adjusting disk, which is used to drive the corresponding rotating knob to rotate when the adjusting disk rotates, thereby adjusting the angle deflection of the corresponding flat rod.

[0020] Furthermore, a plurality of position holes are provided on the arc-shaped outer surface of the fixed disk and at positions corresponding to the adjustment columns. The plurality of position holes are evenly arranged along the circumference of the fixed disk. The adjustment disk locks the adjustment column at the corresponding position hole through a locking bolt, adjusts the rotation angle of the adjustment disk, and thereby locks the deflection angle of the flat rod.

[0021] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0022] By setting up the turntable and the guide groove, the water vapor inside the motor can be guided more smoothly through the guide groove and discharged to the outside of the motor when the rotating shaft rotates, effectively reducing the accumulation of water vapor inside the motor, thereby reducing the dependence on and wear of the seals, indirectly improving the waterproof effect, and effectively solving the technical problems of poor waterproof effect, reduced motor operation stability and high maintenance cost in the existing technology, and achieving the technical effect of enhanced waterproof effect, improved motor operation stability and reduced maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an overall structural diagram of a waterproof structure for a new energy vehicle drive motor according to the present invention.

[0024] Figure 2 This is a three-dimensional cross-sectional view of a waterproof structure of a new energy vehicle drive motor according to the present invention.

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of a waterproof unit of a waterproof structure of a new energy vehicle drive motor according to the present invention.

[0026] Figure 4 This is a schematic side perspective structural diagram of a waterproof unit of a waterproof structure for a new energy vehicle drive motor according to the present invention.

[0027] Figure 5 This is a half-section view of a waterproof unit of a waterproof structure for a new energy vehicle drive motor according to the present invention.

[0028] Figure 6 This is a partial structural schematic diagram of a water removal component and an adjustment component of a waterproof structure of a new energy vehicle drive motor according to the present invention.

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of a water removal component of a waterproof structure of a new energy vehicle drive motor according to the present invention.

[0030] Figure 8 This is a left view of an adjustment component of a waterproof structure for a new energy vehicle drive motor according to the present invention.

[0031] Figure 9 This is a front view of a water removal component and an adjustment component of a waterproof structure of a new energy vehicle drive motor according to the present invention.

[0032] Figure 10 The present invention is a new energy vehicle drive motor waterproof structure Figure 9 Full section view along the AA axis.

[0033] Figure 11 The present invention is a new energy vehicle drive motor waterproof structure Figure 9 Full cross-section view along the middle BB.

[0034] Figure 12 The present invention is a new energy vehicle drive motor waterproof structure Figure 9 Full cross-sectional view along CC direction.

[0035] In the figure: 100, protective box; 101, base; 102, fixing frame; 103, long bolt; 104, short bolt; 105, position hole; 106, locking bolt; 110, motor; 120, rotating shaft; 200, waterproof unit; 201, first shell; 202, second shell; 203, third shell; 204, sealing gasket; 205, sponge; 210, turntable; 211, guide groove; 220, water removal component; 221, fixing plate; 222, hinge seat; 223, flat rod; 224, iron block; 230, adjustment component; 231, air bag; 232, spring roll; 240, deflection component; 241, adjustment plate; 242, adjustment column; 243, rotating knob; 244, connecting rod. DETAILED DESCRIPTION

[0036] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0037] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0039] See also Figure 1 , which is a schematic diagram of the overall structure of a waterproof structure for a new energy vehicle drive motor of the present invention; the waterproof structure for a new energy vehicle drive motor of the present invention allows the water vapor inside the motor 110 to be more smoothly guided and discharged to the outside of the motor 110 through the guide groove 211 when the rotating shaft 120 rotates, through the structure of the turntable 210 and the guide groove 211, thereby effectively reducing the accumulation of water vapor inside the motor 110, thereby reducing the dependence on and wear of the seals, and indirectly improving the waterproof effect; achieving the technical effects of enhanced waterproof effect, improved motor operation stability and reduced maintenance costs.

[0040] Example 1: Figures 1 to 4 As shown, the present application provides a waterproof structure for a new energy vehicle drive motor, comprising a protective box 100 and a motor 110. A base 101 is fixed to the bottom of the protective box 100, and the motor 110 is placed inside the protective box 100 through a fixing frame 102. A rotating shaft 120 is fixed to the output end of the motor 110, and the rotating shaft 120 extends to the outside of the protective box 100. A waterproof unit 200 is provided at the right end of the protective box 100, and the waterproof unit 200 is used to waterproof the motor 110.

[0041] The waterproof unit 200 includes a waterproof housing for waterproofing the rotating shaft 120. The waterproof housing is fixed to the right end of the protective box 100 by short bolts 104. The waterproof housing includes a first housing 201, a second housing 202, a third housing 203, and a sealing gasket 204. The first housing 201, the second housing 202, and the third housing 203 are fixedly connected to each other from right to left in sequence by long bolts 103.

[0042] The first housing 201, the second housing 202 and the third housing 203 are annular structures, all located outside the rotating shaft 120 and on the same horizontal axis as the rotating shaft 120;

[0043] The waterproof unit 200 has a turntable 210 fixed to the right end of the rotating shaft 120. The turntable 210 is located inside the first shell 201 and is used to throw water on the rotating shaft 120 outward; a plurality of guide grooves 211 are evenly opened along the circumference of the turntable 210. The guide grooves 211 are triangular structures and their width gradually widens from the center of the turntable 210 to the edge of the turntable 210.

[0044] During actual operation of the embodiment of the present application, the steps are as follows: first, the motor 110 is fixed inside the protective box 100 by the fixing frame 102, and the first shell 201, the second shell 202 and the third shell 203 are fixedly connected by the long bolts 103; then, the sealing gasket 204 is placed on the left side of the third shell 203 and the waterproof shell is fixed as a whole to the right side of the protective box 100 by the short bolts 104, so that the rotating shaft 120 passes through the third shell 203, the second shell 202 and the first shell 201 from left to right in sequence; finally, the motor 110 is started to run, and the rotating shaft 120 drives the turntable 210 to rotate. The guide groove 211 on the turntable 210 can splash out the water vapor inside the motor 110, reduce the accumulation of water vapor, and improve the waterproof effect.

[0045] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0046] The present application allows the water vapor inside the motor 110 to splash out through the guide groove 211 when the rotating shaft 120 rotates through the structure of the turntable 210 and the guide groove 211, effectively reducing the accumulation of water vapor inside the motor 110, thereby reducing the dependence on and wear of the seals, and indirectly improving the waterproof effect; by arranging the guide groove 211 on the turntable 210, the water vapor can be more smoothly guided and discharged to the outside of the motor 110 as the rotating shaft 120 rotates, thereby enhancing the discharge capacity of the water vapor inside the motor 110, helping to maintain a dry environment inside the motor 110, and further extending the service life of the motor 110; by reducing the accumulation of water vapor inside the motor 110, it helps to reduce the risks of short circuit, corrosion, etc. caused by internal moisture in the motor 110, thereby improving the stability and reliability of the operation of the motor 110; solving the technical problems of poor waterproof effect, reduced motor operation stability and high maintenance cost in the prior art, and achieving the technical effects of enhanced waterproof effect, improved motor operation stability and reduced maintenance cost.

[0047] Example 2: In order to improve the water vapor discharge effect and make the waterproof effect more significant, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0048] like Figures 3 to 7 As shown, the waterproof unit 200 further includes a water removal component 220, which is fixed to the rotating shaft 120 and located inside the third housing 203, and is used to promote the diffusion and drying of water vapor when the motor 110 is running;

[0049] The water removal assembly 220 includes a fixing plate 221, a hinge seat 222 and a flat rod 223;

[0050] The fixed disk 221 is a disk structure, fixed on the rotating shaft 120, and is used to connect and support the flat rod 223;

[0051] The hinge seats 222 are provided in plurality, each of which is rotatably connected to the right end surface of the fixed plate 221 and is evenly arranged along the circumference of the fixed plate 221 for mounting the flat rod 223;

[0052] There are multiple flat rods 223 corresponding to the hinge seats 222 one by one, and are evenly arranged along the circumference of the fixed disk 221 to guide water vapor and throw out water during the rotation of the rotating shaft 120.

[0053] The rotating surface formed by the plurality of flat rods 223 following the rotating shaft 120 is a conical arc surface, so that the heat generated by the motor 110 and the water vapor on the rotating shaft 120 are diffused and thrown outward along the conical arc surface formed by the plurality of flat rods 223.

[0054] The present application sets a flat rod 223 so that it presents a conical arc surface when rotating along with the rotating shaft 120. This shape allows the hot air generated by the motor 110 during operation and the water vapor on the rotating shaft 120 to diffuse outward along the conical arc surface formed by the flat rod 223. Compared with the method of sealing only with a rubber strip, this method more effectively promotes the diffusion of water vapor and avoids the accumulation of water vapor inside the motor 110. Moreover, because the conical arc surface formed by the flat rod 223 not only promotes the diffusion of water vapor, but also allows the hot air generated by the motor 110 during operation to more effectively contact the water vapor on the rotating shaft 120, the hot air dries the water vapor, helps to dry out the small amount of water inside the motor 110, further improves the waterproof performance of the motor 110, and greatly improves the reliability and service life of the motor 110 in humid environments.

[0055] Embodiment 3: In order to prevent water droplets from splashing and improve the water removal efficiency of the device, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0056] like Figure 5 and Figure 6 As shown, an annular placement groove is opened on the left side of the second shell 202, and a sponge 205 is fixed inside the annular placement groove. The sponge 205 is an annular structure and is used to absorb water droplets thrown out from the flat rod 223.

[0057] During the operation of the motor 110, especially in a humid environment, water vapor may be thrown out from the flat rod 223, forming splashing water droplets. The present application provides an annular placement groove on the left side of the second shell 202 and fills it with a sponge 205. Since the sponge 205 has good water absorption, it can quickly absorb and store the splashed water, reducing the accumulation of water and preventing it from further spreading to other parts of the motor 110, thereby reducing the potential damage of water droplets to the internal circuit of the motor 110 and further enhancing the overall waterproof effect of the motor 110. By absorbing excess water, it helps to maintain a dry environment inside the motor 110, thereby extending the service life of the motor 110, reducing the risk of failure caused by splashing water droplets, and improving the reliability and stability of the motor 110.

[0058] Embodiment 4: In order to improve the drying effect of the hot air generated by the motor 110 on the moisture, further ensure the stability of the airflow direction, and improve the flexibility of the device, the present application proposes the following technical solutions to address the above technical problems, specifically:

[0059] like Figures 7 to 12As shown, the waterproof unit 200 also includes an adjustment component 230 and a deflection component 240. The adjustment component 230 is arranged on the left side of the second shell 202 and is located on the inner side of the sponge 205, and is used to dynamically adjust the radial size of the arc surface generated when the flat rod 223 rotates. The deflection component 240 is slidably connected to the inside of the fixed plate 221, and is used to adjust the deflection angle of the flat rod 223.

[0060] The adjustment component 230 includes an air bag 231 and a spring coil 232;

[0061] The airbags 231 are provided in multiple arc-shaped structures and are evenly arranged along the circumference of the second housing 202;

[0062] The mainspring 232 is disposed inside the second housing 202 and inside the airbag 231 , and its surface is made of magnetic material, so as to achieve radial size changes under the action of the airbag 231 .

[0063] An iron block 224 is fixed to one end of the flat rod 223 close to the sponge 205 , and is used to adjust the radial size of the rotating arc surface of the flat rod 223 by cooperating with the mainspring 232 through magnetic attraction.

[0064] Each of the airbags 231 is connected to an external air pump through a pipe. The outside of each of the airbags 231 is wrapped with a U-shaped box structure, so that each of the airbags 231 extends along the radial direction of the second shell 202 in the expanded state and uniformly squeezes the mainspring 232 to cause it to change radially. The length of the airbag 231 extending along the radial direction of the rotating shaft 120 in the fully expanded state is 3 to 5 times the length in the initial state.

[0065] The deflection assembly 240 includes an adjustment disk 241, an adjustment column 242, a rotation knob 243 and a connecting rod 244;

[0066] The adjusting disk 241 is slidably connected to the interior of the fixed disk 221 via the adjusting column 242;

[0067] There are multiple adjusting columns 242, which are evenly arranged along the circumference of the adjusting disk 241 and are used to adjust the rotation angle of the adjusting disk 241;

[0068] The rotating knobs 243 are provided in plurality, corresponding to the hinge seats 222 one by one and fixedly connected to the corresponding hinge seats 222, and are respectively rotatably connected to the left side of the fixed plate 221;

[0069] The connecting rod 244 is an L-shaped structure and is provided in plurality. They are all evenly arranged along the circumference of the adjusting disk 241 and correspond one-to-one to the rotating knobs 243. One end of the connecting rod 244 is fixedly connected to the corresponding rotating knob 243, and the other end is fixed to the right side of the adjusting disk 241. It is used to drive the corresponding rotating knob 243 to rotate when the adjusting disk 241 rotates, thereby adjusting the angular deflection of the corresponding flat rod 223.

[0070] The fixed disk 221 has a plurality of position holes 105 on its curved outer side and at positions corresponding to the adjustment columns 242. The plurality of position holes 105 are evenly arranged along the circumference of the fixed disk 221. The adjustment disk 241 locks the adjustment columns 242 at the corresponding position holes 105 through the locking bolts 106, thereby adjusting the rotation angle of the adjustment disk 241 and locking the deflection angle of the flat rod 223.

[0071] The spring coil 232 is a tightly wound sheet steel bar. The core principle is to store elastic potential energy by winding the sheet steel bar. When the spring coil 232 is tightly wound (that is, the airbag 231 expands and squeezes the spring coil 232 circumferentially), the steel bar undergoes elastic deformation and begins to wind up; when the spring coil 232 is loosened (that is, the airbag 231 contracts to expand the spring coil 232), the external restraint force on the spring coil 232 is released, and the elastic potential energy stored in the spring coil 232 will be quickly released, and the spring coil 232 begins to expand. This is a prior art and will not be described in detail here.

[0072] When the embodiment of the present application is actually running, the steps are as follows:

[0073] Step 1: Before starting the motor 110 and installing the waterproof housing, manually rotate the adjustment dial 241 to adjust the deflection angle of the flat bar 223 to the appropriate position and lock it to the corresponding position hole 105 using the locking bolt 106. The adjustment dial 241 rotates and drives the connecting rods 244 to rotate. Each connecting rod 244 drives the corresponding rotating knob 243 to rotate, thereby causing the corresponding hinge seat 222 to drive the flat bar 223 to adjust the angle.

[0074] Step 2: Start the motor 110, the rotating shaft 120 starts to rotate, driving the flat rod 223 in the water removal assembly 220 to rotate around the fixed disk 221. The conical arc surface of the flat rod 223 can promote the diffusion of water vapor and heat;

[0075] Step 3: Simultaneously, based on the heat and moisture generated by the operation of the motor 110, the output of the air pump is manually controlled, thereby controlling the expansion degree of the airbag 231 of the regulating assembly 230, causing the spring coil 232 to change radially. Furthermore, the radial size of the rotating arc formed by the rotation of the right end of the flat rod 223 is adjusted through magnetic attraction. This dynamic adjustment process optimizes the diffusion path of moisture and heat, thereby improving drying efficiency.

[0076] Step 4: As the flat rod 223 rotates, part of the water vapor is thrown out to be absorbed by the sponge 205 or dried by the sucked hot air, thereby achieving waterproof treatment for the motor 110.

[0077] In actual use of this embodiment, assuming that the deflection angle of the flat rod 223 is 30°, 45°, 60°, and 90°, the radial dimension of the mainspring coil 232 changes in a gradient of one-third. The following two states are taken as examples:

[0078] (1) Control of the radial dimensions of the spring coil 232 (Note: the vent is the gap between the third housing 203, the sealing gasket 204, and the rotating shaft 120)

[0079] ① Initial conditions: the initial radius R0 of the spring coil 232 = 100 mm;

[0080] The initial rotation arc radius r0 of the flat bar 223 is 50 mm;

[0081] Ventilation area A = 0.01m 2 ;

[0082] The hot gas flow rate Q generated by the motor 110 is 0.1m 3 / s;

[0083] ②Calculate the initial state:

[0084] The area formed by the initial rotation of the flat rod 223: Assume that the area formed by the rotation of the flat rod 223 is proportional to the square of the radius of the rotating arc (simplified model), that is, S0∝r0 2 ;

[0085] Specifically, it can be set as S0 = π × r0 2 =π×0.05 2 ≈0.00785m 2 ;

[0086] Initial suction force: F0 = k × S0, assuming k = 100 N / m 2 ;

[0087] Then F0=100×0.00785=0.785N;

[0088] Initial air flow velocity: v0 = Q / A = 0.1 / 0.01 = 10 m / s;

[0089] Initial air volume: Q0′=A×v0=0.01×10=0.1m 3 / s (same as the hot gas flow rate generated by motor 110);

[0090] ③Simulating radial changes of spring 232:

[0091] Change 1: The radius of the Windup 232 is reduced to

[0092] The radius of the arc of rotation of the flat bar 223 is reduced to

[0093] New area S1=π×r1 2 =π×0.03333 2 ≈0.00351m 2 ;

[0094] New suction force F1 = k × S1 = 100 × 0.00351 = 0.351 N;

[0095] New airflow velocity v1 (as the suction force decreases, the airflow velocity also decreases, and the change is proportional)

[0096] set up

[0097] Fresh air volume Q1′=A×v1=0.01×4.47=0.0447m 3 / s;

[0098] Change 2: The radius of the Windup 232 is expanded to

[0099] The radius of the arc of rotation of the flat bar 223 is expanded to

[0100] New area S2 = π × r2 2 =π×0.06667 2 ≈0.0141m 2 ;

[0101] New suction force F2 = k × S2 = 100 × 0.0141 = 1.41 N;

[0102] New airflow speed v2 (as the suction force increases, the airflow speed also increases)

[0103] set up

[0104] Fresh air volume Q2′=A×v2=0.01×17.96=0.1796m 3 / s;

[0105] The following table summarizes the results:

[0106] state Flat bar radius (mm) <![CDATA[Area (m 2 )]]> Suction force (N) Air flow velocity (m / s) <![CDATA[Air volume (m 3 / s)]]> Initial state 50 0.00785 0.785 10 0.1 Radius reduction 33.33 0.00351 0.351 4.47 0.0447 Radius expansion 66.67 0.0141 1.41 17.96 0.1796

[0107] (2) Control of the radial dimension of the spring coil 232

[0108] Ventilation opening area: The ventilation opening area remains unchanged, assuming A = 0.01m 2 .

[0109] Rotation angle of the flat bar 223: The rotation angles of the flat bar 223 are 30°, 45°, 60° and 90° respectively.

[0110] The relationship between wind force (i.e., suction force on the vent) and effective area of ​​the vent: wind force is proportional to effective area of ​​the vent, i.e., F = k × Aeff;

[0111] Since the conical arc surface formed when the flat rod 223 rotates will affect the actual effective area of ​​the vent, the effective area Aeff(θ) is related to the rotation angle θ. According to the change in the deflection angle, the relationship between the actual effective area Aeff(θ) and the rotation angle θ is as follows:

[0112] Aeff(30°)=0.006m 2

[0113] Aeff(45°)=0.008m 2

[0114] Aeff(60°)=0.010m 2

[0115] Aeff(90°)=0.012m 2

[0116] Proportional coefficient: k = 100 N / m 2 ;

[0117] Total air volume: New total air volume Qtotal = 0.1m 3 / s;

[0118] The calculation of the suction force F remains unchanged, since the proportional relationship between the suction force and the effective area of ​​the vent remains unchanged.

[0119] The following table shows the parameters related to the effective area of ​​the vent, the suction force, and the change in the rotation angle of the flat bar 223:

[0120] Flat bar rotation angle <![CDATA[Vent effective area Aeff (m 2 )]]> Suction force F(N) 30° 0.006 6.0 45° 0.008 8.0 60° 0.010 10.0 90° 0.012 12.0

[0121] Since the total air volume Qtotal is 0.1m 3 / s, calculate the air flow velocity v;

[0122] Known:

[0123] The following table shows the relevant parameters of the effective area of ​​the vent, air velocity, air volume and the change of the rotation angle of the flat rod 223:

[0124] Flat bar rotation angle <![CDATA[Vent effective area Aeff (m 2 )]]> Air flow velocity v (m / s) <![CDATA[Air volume Q (m 3 / s)]]> 30° 0.006 16.67 0.10 45° 0.008 12.50 0.10 60° 0.010 10.00 0.10 90° 0.012 8.33 0.10

[0125] The present application provides an adjustment component 230, which controls the radial change of the mainspring coil 232 through the expansion and contraction of the airbag 231. Since the surface of the mainspring coil 232 is made of magnetic material, it produces a magnetic attraction with the iron block 224 at the end of the flat rod 223, thereby adjusting the radial size of the rotating arc surface of the flat rod 223. This dynamic adjustment can more effectively guide the direction of the hot air generated by the motor 110, so that it acts more concentratedly on the flat rod 223, thereby improving the drying efficiency of moisture.

[0126] By adjusting the radial size of the rotating arc surface of the flat rod 223, not only the drying effect of the hot air is enhanced, but also the flow direction of the airflow is further stabilized. During the rotation process, the flat rod 223 can generate suction on the vent (i.e., the gap space between the third shell 203, the sealing gasket 204 and the rotating shaft 120), so that negative pressure is generated at the vent, and then the hot air generated by the motor 110 inside the protective box 100 is sucked in, which helps to avoid turbulence in the airflow inside the motor 110 and reduces the risk of potential damage to the motor 110 or its internal electronic components due to unstable airflow.

[0127] The design of the deflection assembly 240 allows the deflection angle of the flat rod 223 to be adjusted by manually rotating the adjustment dial 241 before the motor 110 is started. This flexibility allows the user to optimize the diffusion path of water vapor and heat according to actual usage needs, further improving the waterproof performance and usage efficiency of the motor 110, and enabling the device to fine-tune the waterproof structure according to changes in environmental conditions or the working state of the motor 110. This dynamic adaptability improves the reliability and stability of the motor 110 under different working conditions and extends the service life of the motor 110.

[0128] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A waterproof structure for a new energy vehicle drive motor, comprising a protective box (100) and a motor (110), wherein a base (101) is fixed to the bottom of the protective box (100), the motor (110) is placed inside the protective box (100) through a fixing frame (102), a rotating shaft (120) is fixed to the output end of the motor (110), and the rotating shaft (120) extends to the outside of the protective box (100), characterized in that: A waterproof unit (200) is provided at the right end of the protection box (100), and the waterproof unit (200) is used to perform waterproof treatment on the motor (110); The waterproof unit (200) includes a waterproof shell for waterproofing the rotating shaft (120), the waterproof shell is fixed to the right end of the protective box (100) by a short bolt (104), and the waterproof shell includes a first shell (201), a second shell (202), a third shell (203) and a sealing gasket (204), and the first shell (201), the second shell (202) and the third shell (203) are fixedly connected to each other from right to left by the long bolt (103); the first shell (201), the second shell (202) and the third shell (203) are annular structures, are all located outside the rotating shaft (120), and are on the same horizontal axis as the rotating shaft (120); The waterproof unit (200) is provided with a rotating disk (210) fixed to the right end of the rotating shaft (120). The rotating disk (210) is located inside the first housing (201) and is used to throw water on the rotating shaft (120) outwards. A plurality of guide grooves (211) are evenly arranged on the surface of the rotating disk (210) along its circumference. The guide grooves (211) are triangular in structure and their width gradually widens from the center of the rotating disk (210) to the edge of the rotating disk (210).

2. A waterproof structure for a new energy vehicle drive motor as claimed in claim 1, characterized in that: The waterproof unit (200) further includes a water removal component (220), which is fixed on the rotating shaft (120) and located inside the third housing (203), and is used to promote the diffusion and drying of water vapor when the motor (110) is running; The dewatering assembly (220) includes a fixed plate (221), a hinge seat (222) and a flat rod (223); The fixed disk (221) is a disk structure, fixed on the rotating shaft (120), and is used to connect and support the flat rod (223); a plurality of hinge seats (222) are provided, which are respectively rotatably connected to the right end surface of the fixed disk (221), are uniformly arranged along the circumference of the fixed disk (221), and are used to install the flat rod (223); a plurality of flat rods (223) are provided, which correspond one to one with the hinge seats (222), are uniformly arranged along the circumference of the fixed disk (221), and are used to guide water vapor and throw out water during the rotation of the rotating shaft (120).

3. A waterproof structure for a new energy vehicle drive motor as claimed in claim 2, characterized in that: The rotating surface formed when the plurality of flat rods (223) rotate along with the rotating shaft (120) is a conical arc surface, so that the hot air generated when the motor (110) is running and the water vapor on the rotating shaft (120) are diffused and thrown outward along the conical arc surface formed by the plurality of flat rods (223).

4. A waterproof structure for a new energy vehicle drive motor as claimed in claim 3, characterized in that: An annular placement groove is provided on the left side of the second shell (202), and a sponge (205) is fixed inside the annular placement groove. The sponge (205) is an annular structure and is used to absorb water droplets thrown out from the flat rod (223).

5. A waterproof structure for a new energy vehicle driving motor as claimed in claim 4, characterized in that: The waterproof unit (200) further comprises an adjustment component (230) and a deflection component (240). The adjustment component (230) is arranged on the left side surface of the second housing (202) and is located inside the sponge (205), and is used to dynamically adjust the radial size of the arc surface generated when the flat rod (223) rotates. The deflection component (240) is slidably connected to the inside of the fixed disk (221), and is used to adjust the deflection angle of the flat rod (223).

6. A waterproof structure for a new energy vehicle driving motor as claimed in claim 5, characterized in that: The regulating assembly (230) includes an air bag (231) and a spring coil (232); The airbags (231) are provided in plurality and are of an arc-shaped structure and are evenly arranged along the circumference of the second shell (202); The mainspring coil (232) is arranged inside the second housing (202) and located inside the airbag (231), and its surface is made of magnetic material, and is used to achieve radial size changes under the action of the airbag (231).

7. A waterproof structure for a new energy vehicle driving motor as claimed in claim 6, characterized in that: An iron block (224) is fixed to one end of the flat rod (223) close to the sponge (205), and is used to adjust the radial size of the rotating arc surface of the flat rod (223) by cooperating with the spring coil (232) through magnetic attraction.

8. The waterproof structure of a new energy vehicle driving motor according to claim 7, characterized in that: Each of the airbags (231) is connected to an external air pump via a pipeline. The outside of each of the airbags (231) is wrapped with a U-shaped box structure, so that each of the airbags (231) extends in the radial direction of the second shell (202) in an expanded state and uniformly squeezes the spring coil (232) to cause radial changes. The length of the airbag (231) extending in the radial direction of the rotating shaft (120) in a fully expanded state is 3 to 5 times the length in the initial state.

9. A waterproof structure for a new energy vehicle driving motor as claimed in claim 8, characterized in that: The deflection assembly (240) includes an adjustment disk (241), an adjustment column (242), a rotation knob (243) and a connecting rod (244); The adjusting disk (241) is slidably connected to the interior of the fixed disk (221) via an adjusting column (242); The adjusting columns (242) are provided in plurality and are evenly arranged along the circumference of the adjusting disk (241) for adjusting the rotation angle of the adjusting disk (241); the rotating knobs (243) are provided in plurality and correspond one-to-one with the hinge seats (222) and are fixedly connected to the corresponding hinge seats (222) and are respectively rotatably connected to the left side of the fixed disk (221); the connecting rods (244) are L-shaped and provided in plurality and are evenly arranged along the circumference of the adjusting disk (241) and correspond one-to-one with the rotating knobs (243), one end of which is fixedly connected to the corresponding rotating knob (243) and the other end of which is fixed to the right side of the adjusting disk (241) for driving the corresponding rotating knob (243) to rotate when the adjusting disk (241) rotates, thereby adjusting the angle deflection of the corresponding flat rod (223).

10. A waterproof structure for a new energy vehicle driving motor as claimed in claim 9, characterized in that: A plurality of position holes (105) are provided on the arc-shaped outer side surface of the fixing plate (221) and at positions corresponding to the adjusting posts (242). The plurality of position holes (105) are evenly arranged along the circumference of the fixing plate (221). The adjusting plate (241) locks the adjusting posts (242) at the corresponding position holes (105) via locking bolts (106), thereby adjusting the rotation angle of the adjusting plate (241) and thereby locking the deflection angle of the flat bar (223).

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