Waterproof structure and motor with same

Abstract

The utility model relates to the field of underwater motors, and more specifically relates to a waterproof structure and a motor provided with the same. The structure comprises an end cover, the middle of the end cover is provided with a through hole, and the outer diameter of the end cover is provided with a convex ring and a plurality of notch grooves evenly distributed in the circumferential direction of the convex ring; the machine shell is in a hollow cylinder shape with the bottom closed and is arranged on the end cover in a sleeving mode, and the bottom of the machine shell comprises a buckle connected with the notch groove and a step face forming a sealed space with the convex ring; the sealing glue layer is formed by filling flowable sealing glue into the sealing space and curing the sealing glue; the problems that an underwater motor is poor in waterproof performance, electric leakage and failure are easily caused, and the safety and the service life of the motor are affected are solved. The structure and the assembling steps are simplified; the convex ring is pressed by the buckle, so that the risk of falling between the shell and the end cover is reduced; the sealing waterproof effect is improved through the sealing glue layer; and the adaptability of the motor in a complex underwater environment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of underwater motor, more particularly, relate to a waterproof structure and the motor with it. BACKGROUND

[0002] In underwater cleaning robot, underwater propeller, hydrofoil plate electric power-assisted device, diving electric power-assisted device, motor is undoubtedly the most core component in the whole device as power source. Motor is used in the above application scene environment is very bad, such as in underwater needs to bear certain water pressure, water quality is bad to motor has greater corrosion effect, therefore in this application scene to motor's waterproof function requirement is very high. Motor once water will appear fixed, rotor iron core and magnetic steel rust, lead to electric motor performance decline or damage failure and can not provide power, also can appear insulation withstand voltage bad and other problems such as leakage and early failure, seriously affect the safety and service life of motor. Therefore the waterproof design of motor is the most important of underwater motor.

[0003] How to improve the waterproof characteristics of the motor used in underwater robot to prolong the service life of underwater robot is a problem to be solved in the field. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming at least one defect (deficiency) of the prior art, providing a waterproof structure and the motor with it, to solve the problem of poor waterproof performance of the motor used underwater, easy to cause leakage and failure, affect the safety and service life of motor.

[0005] The utility model takes the technical scheme, provide a waterproof structure, wherein, including: end cover, the middle part of end cover is equipped with through -hole, and the outer diameter of end cover is equipped with the convex ring and the several notches grooves that are evenly arranged along the circumferential direction of convex ring;Shell, it is hollow cylinder that bottom is closed, is set on end cover, the bottom of shell includes the buckle that is connected with the notches groove, and the step surface that forms the sealed space with the convex ring;Sealing adhesive layer, by flowable sealing adhesive fills in the sealed space and forms after solidification.

[0006] It is favorable to form a sealing cover through the end cover, align the notches grooves provided on the outer diameter of the end cover with the buckle by rotating the end cover to realize the connection of the convex ring and the shell, and provide support for the connection of the end cover through the step surface;Place the electric equipment through the shell, and seal it between the end cover and the shell;Seal the end cover and the shell as a water-tight whole through the sealing adhesive layer.

[0007] Further, the side of the shell is provided with a wire outlet, the top of the end cover is provided with a wire fixing clamp, the wire fixing clamp is arranged above the wire outlet through a fastener, and the wire outlet is filled with flowable sealing adhesive and solidified to form a wire outlet sealing adhesive layer.

[0008] It is beneficial to supply power to the stator assembly connected in the motor through the outlet, and to improve the sealing effect of the outlet through the sealing layer of the outlet.

[0009] Further, the buckle is located above the convex ring, and the step surface is located below the convex ring.

[0010] It is beneficial to set the convex ring between the buckle and the step surface, so that the sealing space is reduced, thereby reducing the volume of the waterproof structure and forming a more lightweight waterproof structure to meet the needs of different underwater environment operations.

[0011] Further, the through hole is provided with a sealing ring.

[0012] It is beneficial to waterproof and seal the rotating shaft passing through the through hole through the sealing ring, avoiding water leakage at the through hole.

[0013] Further, the number of buckles is less than or equal to the number of notch grooves.

[0014] It is beneficial to have more number of notch grooves, so that the end cover can be buckled with the buckle on the shell in any direction of rotation; at the same time, the excess notch groove can be used for injecting sealant.

[0015] Further, the outer diameter D2 of the notch groove is greater than the inner diameter D1 of the step surface.

[0016] It is beneficial to have the outer diameter of the notch groove greater than the inner diameter of the step surface, so that when the end cover is connected with the shell through the notch groove, the protruding width of the step surface is sufficient to support the end cover, and at the same time, the gap of the notch groove is large enough to facilitate the injection of sealant.

[0017] Further, the outer diameter D4 of the convex ring is greater than the inner diameter D3 of the buckle.

[0018] It is beneficial to have the outer diameter of the convex ring greater than the inner diameter of the buckle, so that when the end cover is connected with the shell through the buckle, the convex ring on the end cover can form a sealing space, which helps to strengthen the firmness of the sealant injected in the sealing space.

[0019] Further, the thickness H2 of the convex ring is greater than or equal to the height difference H1 between the buckle and the step surface.

[0020] It is beneficial to have H2≥H1, so that the convex ring is above the step surface and completely seals the buckle, thereby improving the waterproofness of the end cover.

[0021] Also provided is a motor comprising the waterproof structure, a rotating shaft extending out of the through hole, a stator assembly and a rotor assembly arranged in the shell, the stator assembly being connected to the outside of the rotating shaft, and the rotor assembly being connected to the outside of the stator assembly.

[0022] It is favorable to improve the use flexibility of the motor in underwater environment through the waterproof structure, to realize the stable support of the stator assembly and the rotor assembly through the rotating shaft, to generate the magnetic field through the stator, to cut the magnetic field through the rotor, and to realize the conversion of the electric energy into the mechanical energy.

[0023] Further, the power line is connected to one end of the stator assembly and extends out of the outlet port.

[0024] It is favorable to power the stator assembly through the power line and to keep the power line electrified in the underwater environment through the outlet port.

[0025] Compared with the prior art, the utility model has the advantages of simplifying structure and assembly steps, reducing the risk of falling off between the shell and the end cover through the buckle compression convex ring, improving the sealing waterproof effect through the sealing adhesive layer, and improving the adaptability of the motor in complex underwater environment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure perspective view of the utility model.

[0027] Figure 2 It is a half cutaway view of the utility model.

[0028] Figure 3 It is an end cover front view structure section view of the utility model.

[0029] Figure 4 It is an end cover top view structure view of the utility model.

[0030] Figure 5 It is a shell three-dimensional structure view of the utility model.

[0031] Figure 6 It is a shell front view structure section view of the utility model.

[0032] Figure 7 It is a shell top view structure view of the utility model.

[0033] BRIEF DESCRIPTION OF DRAWINGS: end cover 1, convex ring 101, notch groove 102, through hole 103, shell 2, buckle 201, step surface 202, sealing adhesive layer 3, power line 4, wire fixing clamp 5, fastening screw 6, sealing ring 7, rotating shaft 8, stator assembly 9, rotor assembly 10, stator outlet port sealing adhesive layer 11. DETAILED DESCRIPTION

[0034] The drawings of the utility model are only used for example explanation, and cannot be understood as the limitation of the utility model. In order to better illustrate the following embodiments, some components in the drawings can be omitted, enlarged or reduced, and the size of actual products is not represented. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0035] Embodiment

[0036] As Figures 1-7 shown, in the embodiment, a waterproof structure is provided, which comprises: an end cover 1, the middle part of the end cover 1 is provided with a through hole 103, the outer diameter of the end cover 1 is provided with a convex ring 101 and a plurality of notch grooves 102 arranged uniformly along the circumferential direction of the convex ring 101; a shell 2, which is a hollow cylinder with a closed bottom, is sleeved on the end cover 1, the bottom of the shell 2 comprises a buckle 201 connected with the notch groove 102 and a stepped surface 202 forming a sealed space with the convex ring 101; a sealing glue layer 3 is filled into the sealed space by flowable sealing glue and formed after solidification.

[0037] In the embodiment, the convex ring 101 on the outer diameter of the end cover 1 is used to connect the shell 2, the convex ring 101 is located at the bottom of the end cover 1, the hollow cylinder inner wall of the shell 2 is provided with a buckle 201, when the end cover 1 is connected with the shell 2, the notch groove 102 on the convex ring 101 and the buckle 201 on the shell 2 are embedded and connected with each other, the bottom of the buckle 201 is higher than or flush with the groove surface of the notch groove 102, the sealed space formed between the groove surface and the stepped surface 202 is a cavity, and flowable sealing glue is injected into the cavity, and after solidification, the end cover 1 and the shell 2 form a completely sealed waterproof structure through the sealing glue layer 3.

[0038] In the embodiment, the end cover 1 comprises a round cover surface matched with the inner diameter of the shell 2 and a convex surface arranged in the middle part, the round cover surface of the end cover 1 is flush with the upper edge of the shell 2, so that the end cover 1 and the shell 2 are connected and sealed flat; the convex surface of the end cover 1 is provided with a through hole 103 for penetrating the rotating shaft 8 of the motor, preventing water leakage when the motor drives other components through the rotating shaft 8.

[0039] The side part of the shell 2 is provided with a wire outlet, the top of the end cover 1 is provided with a wire fixing clamp 5, the wire fixing clamp 5 is arranged above the wire outlet through a fastening screw 6, and the wire outlet is filled with flowable sealing glue and solidified to form a wire outlet sealing glue layer 3.

[0040] In this embodiment, a step is formed between the raised surface and the domed surface. An opening, i.e., a cable outlet, is provided on the side of the step. The cable outlet is used to supply power to the motor inside the housing 2. A cable clamp 5 is provided above the cable outlet. The cable clamp 5 is fixed between the raised surface and the domed surface by fastening screws 6, so that the power cables 4 connected through the cable outlet extend in a specific direction. After the power cables 4 extend from the cable outlet, flowing sealant is injected to fill the remaining gaps in the cable outlet. After the sealant cures, the stator cable outlet sealant layer 11 is formed to ensure that the power cables 4 used to supply power to the stator assembly 9 are waterproof at the cable outlet.

[0041] The buckle 201 is located above the protruding ring 101, and the stepped surface 202 is located below the protruding ring 101.

[0042] In this embodiment, the protruding ring 101 may also be located between the bottom of the buckle 201 and the stepped surface 202. When the protruding ring 101 is higher than the stepped surface 202, the sealing space becomes thinner, and the sealant layer 3 injected into the sealing space also becomes thinner accordingly, so as to adapt to the housing 2 with different inner wall depths.

[0043] A sealing ring 7 is placed on the through hole 103.

[0044] In this embodiment, the through hole 103 is used to pass through the rotating shaft 8 that connects the motor and other components for transmission. When the rotating shaft 8 rotates, the gaps therein can be sealed by the sealing ring 7 to improve the sealing performance of the waterproof structure.

[0045] The number of the buckles 201 is less than or equal to the number of the notches 102.

[0046] In this embodiment, the notch 102 can be adapted to and connected with the buckle 201, and can also serve as an injection port for sealing the space. Therefore, any notch 102 exceeding the number of buckles 201 can be used to inject sealant.

[0047] The outer diameter D2 of the notch 102 is greater than the inner diameter D1 of the stepped surface 202.

[0048] In this embodiment, the outer diameter D2 of the notch 102 is larger than the inner diameter D1 of the step surface 202, so that the step surface forms a wall protrusion, and the protrusion width of the step surface is sufficient to support the end cap, which facilitates the improvement of installation efficiency; at the same time, the gap of the notch is large enough to facilitate the injection of sealant.

[0049] The outer diameter D4 of the convex ring 101 is greater than the inner diameter D3 of the buckle 201.

[0050] In the embodiment, the outer diameter D4 of the convex ring 101 is larger than the inner diameter of the buckle 201, so that when the end cover is connected to the shell through the buckle, the convex ring on the end cover can form a sealed space, which helps to strengthen the firmness of the sealant injected in the sealed space.

[0051] The thickness H2 of the convex ring 101 is greater than or equal to the height difference H1 between the buckle 201 and the step surface 202.

[0052] In the embodiment, the thickness H2 of the convex ring 101 is greater than or equal to the height difference H1 between the buckle 201 and the step surface 202, so that the convex ring is above the step surface and completely seals the buckle, thereby improving the waterproofness of the end cover.

[0053] Also provided is an electric machine, which comprises the waterproof structure, a rotating shaft 8 extending out of the through hole 103, a stator assembly 9 and a rotor assembly 10 arranged in the shell 2, the stator assembly 9 being connected to the outside of the rotating shaft 8, and the rotor assembly 10 being connected to the outside of the stator assembly 9.

[0054] In the embodiment, the electric machine comprises the waterproof structure, the rotating shaft 8, the stator assembly 9 and the rotor assembly 10 arranged in the shell 2, the stator assembly 9 being used to generate a rotating magnetic field, and the rotor assembly 10 being used to output a rotating torque.

[0055] The electric machine further comprises a power line 4, one end of the power line 4 being connected to the stator assembly 9 and the other end extending out of the wire outlet.

[0056] In the embodiment, the stator assembly 9 is powered by the power line 4, and the power line 4 is connected to the outside of the electric machine through the wire outlet.

[0057] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the technical scheme of the utility model, and are not a limitation on the specific embodiments of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model claim should be included in the protection scope of the utility model claim.

Claims

1. A waterproof structure, characterized by, The application relates to a waterproof structure of a motor. The end cover is provided with a through hole in the middle part, and the outer diameter of the end cover is provided with a convex ring and a plurality of notch grooves arranged uniformly along the circumferential direction of the convex ring. The shell is a hollow cylinder with a closed bottom, is sleeved on the end cover, and the bottom of the shell comprises a buckle connected with the notch groove and a stepped surface forming a sealing space with the convex ring. The sealing glue layer is filled with flowable sealing glue into the sealing space and is formed after solidification.

2. The waterproof structure according to claim 1, characterized by The side of the shell is provided with a wire outlet, the top of the end cover is provided with a wire fixing clamp, the wire fixing clamp is arranged above the wire outlet through a fastener, the wire outlet is filled with flowable sealing glue and is formed into a wire outlet sealing glue layer after solidification.

3. The waterproof structure according to claim 1, characterized by The buckle is above the convex ring, and the stepped surface is below the convex ring.

4. The waterproof structure according to claim 1, characterized by A sealing ring is placed on the through hole.

5. The waterproof structure according to claim 1, wherein The number of the buckle is less than or equal to the number of the notch groove.

6. The waterproof structure according to claim 1, wherein The outer diameter D2 of the notch groove is greater than the inner diameter D1 of the stepped surface.

7. The waterproof structure according to claim 1, characterized by The outer diameter D4 of the convex ring is greater than the inner diameter D3 of the buckle.

8. The waterproof structure according to claim 1, characterized by The thickness H2 of the convex ring is greater than or equal to the height difference H1 between the buckle and the stepped surface.

9. An electric machine characterized by The waterproof structure of the motor comprises the waterproof structure of any one of claims 1-8, a rotating shaft extending out of the through hole, a stator assembly and a rotor assembly arranged in the shell, the stator assembly is connected to the outside of the rotating shaft, and the rotor assembly is connected to the outside of the stator assembly.

10. The electric machine of claim 9, wherein, The waterproof structure of the motor further comprises a power supply line, one end of the power supply line is connected to the stator assembly, the side of the shell is provided with a wire outlet, and one end of the power supply line extends out of the wire outlet.

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