Waterproof and breathable upper cover of EPS motor

Abstract

The utility model relates to the technical field of EPS motors, in particular to a waterproof and breathable upper cover of an EPS motor. The motor comprises a motor upper cover, a plurality of air holes and a waterproof breathable film, the plurality of air holes are formed in the motor upper cover, the waterproof breathable film is installed on the motor upper cover in a hot welding pasting mode and covers the plurality of air holes, a fixing piece is arranged on the motor upper cover, the plurality of air holes and the waterproof breathable film are located in the fixing piece, and the waterproof breathable film is arranged on the motor upper cover. And a ventilating valve cover is arranged on the fixing piece. According to the utility model, through the arrangement of the air holes and the waterproof air-permeable membrane, the composition of components required by waterproof air permeability of the whole motor is simplified, the waterproof air-permeable effect of the motor is guaranteed, the waterproof air-permeable membrane is installed in a hot welding pasting mode, the installation convenience of the waterproof air-permeable membrane is guaranteed, the production efficiency of the motor is improved, and the production cost is reduced. And through the arrangement of the fixing piece and the ventilation valve cover, foreign matter can be prevented from entering and adhering to the waterproof ventilation film, and the protection effect on the waterproof ventilation film is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of EPS motors, in particular to a waterproof and breathable upper cover of an EPS motor. Background Art

[0002] With the rapid development of the automotive industry, people are paying more and more attention to automotive EPS (Electric Power Steering) motors. The performance and stability of automotive steering motors play an important role in the driving process of the car. Among them, the air permeability and waterproofness of the steering motor are very important factors affecting the quality stability and safety of the motor.

[0003] There are two main ways to achieve the ventilation and waterproof function of steering motors on the market:

[0004] (1) A circular through hole is designed at the upper cover of the motor, and a snap-on waterproof breathable valve is installed at the circular through hole in a snap-on manner. The waterproof breathable valve is used to balance the pressure difference between the inside and outside of the motor and prevent water vapor from entering the motor through the breathable valve. However, this structural method still has shortcomings when used: it is difficult to detect whether the breathable valve is properly assembled. If the breathable valve is not properly assembled, it is easy to loosen and fall during use, affecting the normal use of the motor.

[0005] (ii) A threaded through hole is designed on the upper cover of the motor, and a threaded assembled waterproof breathable valve is installed on the threaded through hole. The waterproof breathable valve is used to balance the pressure difference between the inside and outside of the motor and prevent water vapor from entering the motor through the breathable valve. However, this structural method still has shortcomings when used: the assembly efficiency through the thread is low, and the motor will vibrate during use. The vibration affects the stability of the threaded connection, and then affects the assembly stability of the waterproof breathable valve. Utility Model Content

[0006] In view of the problems existing in the background technology, a waterproof and breathable upper cover of an EPS motor is proposed.

[0007] The utility model provides an EPS motor waterproof and breathable upper cover, comprising a motor upper cover, a plurality of air holes are opened on the motor upper cover, a waterproof and breathable membrane is arranged on the motor upper cover, the waterproof and breathable membrane covers the plurality of air holes, a fixing piece is arranged on the motor upper cover, the plurality of air holes and the waterproof and breathable membrane are both located in the fixing piece, and a breathable valve cover is arranged on the fixing piece.

[0008] Preferably, the fixing member is set to be cylindrical, and a plurality of ventilation grooves arranged in an annular shape are opened on the fixing member, a plurality of spherical grooves are opened on the inner wall of the fixing member, the air valve cover is located in the fixing member, a plurality of protrusions are arranged on the air valve cover, the plurality of protrusions respectively extend into the plurality of air grooves and fit in the air grooves, and a plurality of hemispheres are installed on the air valve cover, and the plurality of hemispheres are respectively fit in the plurality of spherical grooves.

[0009] Preferably, the waterproof and breathable membrane is installed on the motor cover by means of heat welding and gluing.

[0010] Preferably, the ventilation holes are through holes with a diameter of 2 mm, and the plurality of ventilation holes are arranged in a circle.

[0011] Preferably, a fixing ring is installed on the upper cover of the motor, a protective cover is provided on the upper cover of the motor, the fixing piece is located inside the protective cover, and the protective cover is connected to the fixing ring by bolts.

[0012] Preferably, a fixing cylinder is installed on the upper cover of the motor, a mounting cylinder is threadedly mounted on the fixing cylinder, a waterproof breathable membrane is arranged on the mounting cylinder, a plurality of ventilation slots are opened on the mounting cylinder, and a positioning assembly is arranged on the fixing cylinder.

[0013] Preferably, the positioning assembly includes a fixed rod installed on the fixed cylinder, a limit plate is installed on one end of the fixed rod, a baffle is provided on the fixed cylinder, one side of the baffle extends into the ventilation groove, a moving block is installed on the baffle, the fixed rod passes through the moving block and is slidably connected to the moving block, a reinforcing spring is sleeved on the fixed rod, and both ends of the reinforcing spring are respectively connected to the moving block and the limit plate.

[0014] Preferably, a mounting ring is installed on the inner wall of the mounting tube, and the waterproof and breathable membrane is installed on the mounting ring by means of heat welding and bonding.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] The provision of the air holes and the waterproof breathable membrane simplifies the components required for the waterproof and breathable motor, thus saving costs. The provision of the waterproof breathable membrane also ensures the waterproof and breathable effect of the motor. The installation convenience of the waterproof breathable membrane is ensured by the hot welding method, thereby improving the production efficiency of the motor.

[0017] The setting of the fixings and the breathable valve cover can prevent foreign matter from entering and sticking to the waterproof breathable membrane, thereby improving the protection effect of the waterproof breathable membrane. At the same time, the setting of the fixings also provides positioning for the installation of the waterproof breathable membrane, ensures the assembly accuracy of the waterproof breathable membrane, and also facilitates the detection of the installation position of the waterproof breathable membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the first embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the appearance structure of the first embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the fixing member and the air-permeable valve cover in the first embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the second embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the installation cylinder, the fixing cylinder and the sealing ring in the second embodiment of the utility model;

[0023] Figure 6 It is a cross-sectional structural schematic diagram of the installation tube of the second embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the fixing cylinder and the positioning assembly in the second embodiment of the utility model;

[0025] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part A is shown.

[0026] Figure numerals: 1. Motor cover; 2. Air vent; 3. Fixing piece; 4. Spherical groove; 5. Waterproof breathable membrane; 6. Breathable valve cover; 7. Hemisphere; 8. Fixing ring; 9. Protective cover; 10. Torsion plate one; 11. Fixing cylinder; 12. Mounting cylinder; 13. Torsion plate two; 14. Sealing ring; 15. Mounting ring; 16. Fixing rod; 17. Limiting plate; 18. Moving block; 19. Reinforcement spring; 20. Baffle bar. DETAILED DESCRIPTION

[0027] Embodiment 1

[0028] like Figure 1-Figure 3 As shown, the utility model provides an EPS motor waterproof and breathable upper cover, which includes a motor upper cover 1, a plurality of air holes 2 and a waterproof and breathable membrane 5.

[0029] like Figure 1 and Figure 2 As shown, multiple air holes 2 are provided on the motor cover 1, and the waterproof air-permeable membrane 5 is installed on the motor cover 1 by means of hot welding and pasting. The waterproof air-permeable membrane 5 covers the multiple air holes 2, and the air holes 2 are through holes with a diameter of 2 mm. The multiple air holes 2 are arranged in a circle, and a fixing part 3 is provided on the motor cover 1. The multiple air holes 2 and the waterproof air-permeable membrane 5 are all located in the fixing part 3, and a ventilation valve cover 6 is provided on the fixing part 3.

[0030] like Figure 1-Figure 3As shown, the fixing member 3 is set to be cylindrical, and a plurality of ventilation grooves arranged in an annular shape are opened on the fixing member 3, a plurality of spherical grooves 4 are opened on the inner wall of the fixing member 3, and the breathable valve cover 6 is located in the fixing member 3. A plurality of protrusions are arranged on the breathable valve cover 6, and the plurality of protrusions extend into the plurality of breathable grooves respectively and fit in the breathable grooves. There is a gap between the protrusions and the bottom inner wall of the breathable groove to facilitate the ventilation of the waterproof breathable membrane of the motor, and a plurality of hemispheres 7 are installed on the breathable valve cover 6, and the plurality of hemispheres 7 are respectively fitted with the plurality of spherical grooves 4.

[0031] like Figure 1 and Figure 2 As shown, a fixing ring 8 is installed on the motor cover 1, a protective cover 9 is arranged on the motor cover 1, a plurality of mounting grooves are opened on the protective cover 9, a filter screen is installed on the inner wall of the mounting groove, a fixing member 3 is located in the protective cover 9, the protective cover 9 is connected to the fixing ring 8 by bolts, and a torsion plate 10 is installed on the top of the protective cover 9 to facilitate the rotation of the protective cover 9.

[0032] In this embodiment, when in use, it is necessary to open a vent hole 2 on the motor cover 1, and then install the waterproof breathable membrane 5 on the motor cover 1 by hot welding and pasting, and then press the breathable valve cover 6, and then install the breathable valve cover 6 on the fixing member 3 above the waterproof breathable membrane 5 by snapping with spherical concave and convex points, thereby preventing foreign matter from entering and sticking to the waterproof breathable membrane 5, and ensuring the waterproof and breathable function of the motor;

[0033] After the waterproof breathable membrane 5 is installed, the protective cover 9 can be installed on the fixing ring 8 by means of bolts, and the fixing part 3 and the breathable valve cover 6 can be wrapped by the protective cover 9 to reduce the influence of dust on the waterproof breathable membrane 5 and further improve the protection of the waterproof breathable membrane 5.

[0034] Embodiment 2

[0035] like Figure 4-Figure 5As shown, the utility model proposes a waterproof and breathable upper cover of an EPS motor, which also includes a fixing cylinder 11, which is fixedly mounted on the motor upper cover 1 by welding, and a plurality of air holes 2 are all located in the fixing cylinder 11, and a mounting cylinder 12 is threadedly mounted on the fixing cylinder 11, and an internal thread is arranged in the fixing cylinder 11, and an external thread is arranged on the mounting cylinder 12, and the internal thread is adapted to the external thread. During the installation process, a sealing ring 14 needs to be placed in the fixing cylinder 11, so that the installation sealing performance of the mounting cylinder 12 can be improved, and a torsion plate 13 is installed on the top of the mounting cylinder 12 to facilitate the rotation of the mounting cylinder 12, and a mounting ring 15 is installed on the inner wall of the mounting cylinder 12, and the waterproof and breathable membrane 5 is passed through It is installed on the mounting ring 15 by hot welding and pasting. The mounting cylinder 12 is provided with a plurality of ventilation grooves. A positioning assembly is provided on the fixed cylinder 11. The positioning assembly includes a fixed rod 16 installed on the fixed cylinder 11. A limit plate 17 is installed at one end of the fixed rod 16. A baffle 20 is provided on the fixed cylinder 11. One side of the baffle 20 extends into the ventilation groove. The bottom of the baffle 20 needs to contact the top of the fixed cylinder 11 and the bottom inner wall of the ventilation groove. A moving block 18 is installed on the baffle 20. The fixed rod 16 penetrates the moving block 18 and is slidably connected with the moving block 18. A reinforcing spring 19 is sleeved on the fixed rod 16. The two ends of the reinforcing spring 19 are respectively connected to the moving block 18 and the limit plate 17.

[0036] In the utility model, when the waterproof breathable membrane 5 is installed, the sealing ring 14 is inserted into the fixing tube 11, and then the wave baffle 20 is moved in the direction away from the fixing tube 11, and then the installation tube 12 is installed on the fixing tube 11 by screw rotation, and then the baffle 20 is loosened, and under the action of the reinforcement spring 19, one side of the baffle 20 is pushed to extend into the ventilation groove on the installation tube 12, and the installation tube 12 can be limited by the baffle 20 to ensure the installation stability of the waterproof breathable membrane 5. In summary, the replacement efficiency of the waterproof breathable membrane 5 is improved.

[0037] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A waterproof and breathable upper cover of an EPS motor, comprising: A motor cover (1) is provided with a plurality of air holes (2), characterized in that a waterproof air-permeable membrane (5) is provided on the motor cover (1), the waterproof air-permeable membrane (5) covers the plurality of air holes (2), a fixing member (3) is provided on the motor cover (1), the plurality of air holes (2) and the waterproof air-permeable membrane (5) are both located in the fixing member (3), and a air-permeable valve cover (6) is provided on the fixing member (3).

2. The EPS motor waterproof and breathable upper cover according to claim 1, characterized in that: The fixing member (3) is cylindrical and is provided with a plurality of annular ventilation grooves. The inner wall of the fixing member (3) is provided with a plurality of spherical grooves (4). The air-permeable valve cover (6) is located in the fixing member (3). The air-permeable valve cover (6) is provided with a plurality of protrusions. The plurality of protrusions extend into the plurality of ventilation grooves and fit in the ventilation grooves. The air-permeable valve cover (6) is provided with a plurality of hemispherical bodies (7). The plurality of hemispherical bodies (7) fit in the plurality of spherical grooves (4) respectively.

3. The EPS motor waterproof and breathable upper cover according to claim 1, characterized in that: The waterproof and breathable membrane (5) is installed on the motor upper cover (1) by means of thermal welding and gluing.

4. The EPS motor waterproof and breathable upper cover according to claim 1, characterized in that: The ventilation holes (2) are through holes with a diameter of 2 mm, and a plurality of ventilation holes (2) are arranged in a circular shape.

5. The EPS motor waterproof and breathable upper cover according to claim 2, characterized in that: A fixing ring (8) is installed on the motor upper cover (1), a protective cover (9) is arranged on the motor upper cover (1), a fixing member (3) is located inside the protective cover (9), and the protective cover (9) is connected to the fixing ring (8) by bolts.

6. The EPS motor waterproof and breathable upper cover according to claim 1, characterized in that: A fixing cylinder (11) is installed on the motor upper cover (1), a mounting cylinder (12) is threadedly mounted on the fixing cylinder (11), a waterproof breathable membrane (5) is arranged on the mounting cylinder (12), a plurality of ventilation slots are provided on the mounting cylinder (12), and a positioning assembly is arranged on the fixing cylinder (11).

7. The EPS motor waterproof and breathable upper cover according to claim 6, characterized in that: The positioning assembly comprises a fixed rod (16) mounted on a fixed cylinder (11), a limiting plate (17) being mounted on one end of the fixed rod (16), a blocking bar (20) being arranged on the fixed cylinder (11), one side of the blocking bar (20) extending into the ventilation groove, a moving block (18) being mounted on the blocking bar (20), the fixed rod (16) passing through the moving block (18) and being slidably connected to the moving block (18), a reinforcing spring (19) being sleeved on the fixed rod (16), and two ends of the reinforcing spring (19) being respectively connected to the moving block (18) and the limiting plate (17).

8. The EPS motor waterproof and breathable upper cover according to claim 6, characterized in that: A mounting ring (15) is mounted on the inner wall of the mounting tube (12), and the waterproof and breathable membrane (5) is mounted on the mounting ring (15) by means of thermal welding and bonding.

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