Waterproof motor

Abstract

The utility model provides a waterproof motor, which comprises a base, a casing and an armature, the casing is in the shape of a cylinder with one open end, and the armature is accommodated in the base and the casing; the motor base comprises a base and a sleeve; an output shaft connected with a rotor in the armature penetrates through the sleeve and extends out of the waterproof motor; an oil seal clamping groove is formed in the outward end of the sleeve and is embedded with an oil seal; a sealing ring groove and a first glue storage groove are formed in the outer side of the base, the first glue storage groove is located in the outer side of the sealing ring groove, a sealing rubber ring is detachably installed in the sealing ring groove, and pouring sealant is injected into the first glue storage groove to fill a gap between the base and the machine shell; a wire outlet hole is formed in the base in a penetrating manner, and an externally accessed wire passes through the wire outlet hole to be connected with the armature; a second glue storage groove is formed in the side, close to the interior, of the base, the wire outlet hole penetrates through the second glue storage groove, and pouring sealant is injected into the second glue storage groove to fill a gap between the wire and the wire outlet hole. The waterproof motor saves space, is good in waterproof effect, resistant to corrosion and beneficial to heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of electric motor technology, specifically to a waterproof motor. Background Technology

[0002] Currently, most motors used in pool cleaning robots are not waterproof. Corrosion and waterproofing are achieved through two methods: first, protecting the motor itself by placing it in a waterproof protective shell; and second, protecting the output shaft by using an oil seal at the protruding part of the output shaft. For example, patent document CN220629031 U discloses a dynamic sealing device for an underwater motor, which uses a protective shell to seal the motor. Obviously, using a protective shell to seal the motor increases the overall space required for the device, hinders motor heat dissipation, and reduces motor lifespan. Utility Model Content

[0003] This utility model provides a waterproof motor to solve the problems of existing technologies that use protective shells to achieve waterproofing of motors, which occupy a lot of space and are not conducive to heat dissipation.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A waterproof motor includes a frame, a housing, and an armature. The armature includes a stator and a rotor. The housing is a cylindrical shape with one end open. The frame is installed at the open end of the housing and forms a closed space with the housing to house the armature.

[0006] The base includes a disc-shaped base and a sleeve that passes through the base. The base and the sleeve are coaxial. The output shaft of the motor passes through the sleeve and extends out of the waterproof motor.

[0007] An oil seal groove is formed at the end of the sleeve facing the outside of the waterproof motor, and an oil seal is fitted in place.

[0008] A sealing ring groove and a first glue storage groove are formed on the outer side of the base. The first glue storage groove is located on the side of the sealing ring groove closer to the outside of the waterproof motor. A sealing ring is detachably installed in the sealing ring groove. Potting glue is injected into the first glue storage groove to fill the gap between the base and the housing.

[0009] The base has an axial through-hole for external wires to pass through and connect to the armature.

[0010] A second glue storage groove is formed on the side of the base near the inside of the waterproof motor, and the wire outlet hole passes through the second glue storage groove. The second glue storage groove is filled with potting compound to fill the gap between the wire and the wire outlet hole.

[0011] A good waterproof effect is achieved by sealing measures between the output shaft and the sleeve, between the base and the housing, and between the wire and the outlet hole.

[0012] In an improved embodiment, the end of the sleeve facing the outside of the waterproof motor is further provided with a cover groove for fitting and installing a cover, thereby further securing the oil seal.

[0013] In an improved embodiment, a pressure plate is detachably provided on the side of the base near the exterior of the waterproof motor. The pressure plate is used to fix the relative position of the wire and the base, thereby preventing the disturbance of the wire from affecting the seal.

[0014] In an improved embodiment, the base is made of brass, and the stator in the armature abuts against the base, thereby further improving heat dissipation and corrosion resistance.

[0015] The beneficial effects of this utility model are as follows:

[0016] The present invention provides a waterproof motor, which has good waterproof effect by sealing the output shaft and sleeve, the base and housing, and the wire and the outlet hole. Since no additional protective shell is required, it saves space and facilitates heat dissipation, and has good corrosion resistance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of a waterproof motor.

[0018] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0019] Figure 3 This is a sectional view of the machine base;

[0020] Figure 4 This is a 3D view of a waterproof motor.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Base; 11. Base; 111. Sealing ring groove; 112. First glue storage groove; 113. Second glue storage groove; 114. Cable outlet; 12. Sleeve; 121. Oil seal groove; 122. Cover groove; 2. Housing; 3. Armature; 31. Output shaft; 4. Oil seal; 5. Cover; 6. Sealing ring; 7. Wire; 8. Pressure plate; 9. Potting compound. Detailed Implementation

[0023] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0024] like Figure 1-4As shown, this utility model embodiment provides a waterproof motor, which mainly includes a base 1, a housing 2 and an armature 3 (the armature 3 includes a stator and a rotor). The housing 2 is a cylindrical shape with one end open. The base 1 is installed at the open end of the housing 2 and forms a closed space with the housing 2 to accommodate the armature 3. The output shaft 31 of the rotor connected in the armature 3 passes through the base 1 and extends out of the waterproof motor to ensure normal driving function.

[0025] The core protective function of this utility model is realized based on the structure of the base 1: the base 1 includes a disc-shaped base 11 and a sleeve 12 that penetrates the base 11. The base 11 and the sleeve 12 are coaxial, and the sleeve 12 is for the output shaft 31 to pass through. To ensure the sealing performance between the sleeve 12 and the output shaft 31, an oil seal groove 121 is formed at the end of the sleeve 12 facing the outside of the waterproof motor for fitting and installing the oil seal 4. The oil seal 4 achieves dynamic sealing between the output shaft 31 and the sleeve 12. To further ensure the reliability of the oil seal 4 installation, in a further improved embodiment of this utility model, a cover groove 122 is also formed at the end of the sleeve 12 facing the outside of the waterproof motor for fitting and installing the cover 5 to prevent the oil seal 4 from coming out of the oil seal groove 121.

[0026] To ensure the sealing performance between the base 1 and the housing 2, a sealing ring groove 111 and a first adhesive storage groove 112 are formed on the outer side of the base 11. The first adhesive storage groove 112 is located on the side of the sealing ring groove 111 closer to the outside of the waterproof motor. The sealing ring groove 111 is used to install the sealing ring 6. Since the sealing ring 6 is elastic, when the base 11 and the housing 2 are installed after the sealing ring 6 is pre-installed on the base 11, the sealing ring 6 is compressed and undergoes elastic deformation, thus completing the seal between the base 1 and the housing 2. To ensure the sealing performance between the base 1 and the housing 2, after the base 1 and the housing 2 are installed, potting compound 9 is injected into the first adhesive storage groove 112 to further improve the sealing performance between the base 1 and the housing 2 (the potting compound 9 fills the gap between the base 11 and the housing 2).

[0027] Considering that the armature 3 needs power, an axial through-hole 114 is provided on the base 11 for the externally connected wire 7 to pass through the through-hole 114 and connect to the armature 3. Considering the sealing protection between the wire 7 and the through-hole 114, a second glue storage groove 113 is formed on the side of the base 11 near the inside of the waterproof motor, and the through-hole 114 passes through the second glue storage groove 113. By injecting potting compound 9 into the second glue storage groove 113, the seal between the wire 7 and the through-hole 114 is achieved (filling the gap between the wire 7 and the through-hole 114). In order to avoid the swing of the wire 7 from affecting the potting compound 9 injected into the second glue storage groove 113 (potentially damaging the potting compound 9 and potentially damaging the wire), in a preferred embodiment of this utility model, a pressure plate 8 is detachably provided on the side of the base 11 near the outside of the waterproof motor. The pressure plate 8 is used to fix the relative position of the wire 7 and the base 11.

[0028] Furthermore, considering the corrosion resistance requirements for underwater operation, all components in this embodiment that come into contact with water are made of corrosion-resistant materials. For example, the output shaft 31 is preferably made of stainless steel, the cover 5 is preferably made of corrosion-resistant plastic or metal, the base 1 is preferably made of brass (considering both heat conduction and corrosion resistance), the sealing ring 6 is preferably made of silicone rubber, the housing 2 is preferably made of corrosion-resistant and waterproof plastic, the potting compound 9 is preferably made of polyurethane resin, the wire pressure plate 8 is preferably made of corrosion-resistant and waterproof plastic, and the oil seal 4 is preferably made of NBR.

[0029] To further enhance the heat dissipation effect, in a preferred embodiment of this utility model, the stator in the armature 3 abuts against the base 11, the heat of the armature 3 is conducted outward through the base 1, and the base 3 is in direct contact with water, thereby improving the temperature rise through water cooling.

[0030] The present invention provides a waterproof motor, which achieves waterproof function by sealing measures between the output shaft 31 and the sleeve 12, between the base 1 and the housing 2, and between the wire 7 and the outlet hole 114. This saves space, facilitates heat dissipation, and has good corrosion resistance.

[0031] The embodiments described above merely illustrate the implementation of this utility model, and should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A waterproof motor, characterized in that, It includes a base (1), a housing (2) and an armature (3). The armature (3) includes a stator and a rotor. The housing (2) is a cylindrical shape with one end open. The base (1) is installed at the open end of the housing (2) and forms a closed space with the housing (2) to house the armature (3). The base (1) includes a disc-shaped base (11) and a sleeve (12) that passes through the base (11). The base (11) and the sleeve (12) are coaxial. The output shaft (31) of the rotor connected to the armature (3) passes through the sleeve (12) and extends out of the waterproof motor. The sleeve (12) has an oil seal groove (121) at one end facing the outside of the waterproof motor, and the oil seal (4) is fitted in it. A sealing ring groove (111) and a first glue storage groove (112) are formed on the outer side of the base (11), and the first glue storage groove (112) is located on the side of the sealing ring groove (111) closer to the outside of the waterproof motor. A sealing ring (6) is detachably installed in the sealing ring groove (111), and potting compound (9) is injected into the first glue storage groove (112) to fill the gap between the base (11) and the housing (2). The base (11) is provided with an axial through hole (114) for external wires (7) to pass through the through hole (114) and connect to the armature (3); A second glue storage groove (113) is formed on the side of the base (11) near the inside of the waterproof motor, and the wire outlet (114) passes through the second glue storage groove (113). The second glue storage groove (113) is filled with potting compound (9) to fill the gap between the wire (7) and the wire outlet (114).

2. A waterproof motor according to claim 1, characterized in that, The sleeve (12) also has a cover groove (122) at one end facing the outside of the waterproof motor for fitting and installing the cover (5).

3. A waterproof motor according to claim 1, characterized in that, A pressure plate (8) is detachably provided on the side of the base (11) near the outside of the waterproof motor. The pressure plate (8) is used to fix the relative position of the wire (7) and the base (11).

4. A waterproof motor according to claim 1, characterized in that, The base (1) is made of brass, and the stator in the armature (3) abuts against the base (11).

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