Motor sealing waterproof structure

Abstract

The utility model discloses a motor sealing waterproof structure, which comprises a rotor assembly fixedly integrated with a motor shaft and a stator assembly positioned on the periphery of the rotor assembly, and the upper end and the lower end of the motor shaft are respectively connected with an upper motor shell and a lower motor shell in a relatively rotating manner; the lower end portion of the upper motor shell and the upper end portion of the lower motor shell are fixedly installed and connected to form a motor internal space, and a flexible sealing ring is fixedly embedded between the lower end portion of the upper motor shell and the upper end portion of the lower motor shell. External water vapor is prevented from entering the internal space of the motor through the mounting gap between the upper motor shell and the lower motor shell; according to the utility model, the outer end part of the installation gap between the upper motor shell and the lower motor shell is sealed and filled by the flexible sealing ring, so that external water vapor is prevented from entering the internal space of the motor through the installation gap between the upper motor shell and the lower motor shell, the sealing waterproof performance of the motor is improved, the sealing structure is simple, and the cost is low. And quick assembly is easy in batch production.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor sealing structure field, concretely relates to a motor sealing waterproof structure. BACKGROUND

[0002] The body structure of the motor is mainly composed of a casing, a stator assembly, a rotor assembly, a motor control board and other structural units. During the high-speed rotation of the motor, external water vapor may enter the motor through the gap between the installation connection, thereby causing the motor to fail due to water entering the motor or the connection circuit between the motor control board and the stator assembly to fail, ultimately resulting in the motor failing to meet the service life requirement, and even directly damaging the motor.

[0003] Therefore, the applicant hopes to seek a technical solution to solve the above technical problems. SUMMARY

[0004] Therefore, the utility model discloses a motor sealing waterproof structure, the installation gap outer end portion between the upper motor casing and the lower motor casing is sealed and filled by the flexible sealing ring, avoid external water vapor through the installation gap between the upper motor casing and the lower motor casing and enter the motor internal space, improved the motor's sealing waterproof performance, and the sealing structure is simple, and easy to quickly assemble in batch production.

[0005] The utility model discloses the technical scheme as follows:

[0006] A motor sealing waterproof structure, comprising a rotor assembly integrally connected with a motor shaft, a stator assembly located on the outer periphery of the rotor assembly, wherein the upper end and the lower end of the motor shaft are respectively connected with the upper motor casing and the lower motor casing in a rotatable manner; the lower end of the upper motor casing and the upper end of the lower motor casing are fixedly connected to form a motor internal space, wherein a flexible sealing ring is embedded between the lower end of the upper motor casing and the upper end of the lower motor casing, thereby preventing external water vapor from entering the motor internal space through the installation gap between the upper motor casing and the lower motor casing.

[0007] Preferably, the lower end of the upper motor casing is provided with a sealing groove, and the flexible sealing ring is embedded in the sealing groove; when the lower motor casing is assembled, the upper end of the lower motor casing deforms the flexible sealing ring, so that the installation gap between the upper motor casing and the lower motor casing is sealed and filled by the flexible sealing ring; or, the upper end of the lower motor casing is provided with a sealing groove, and the flexible sealing ring is embedded in the sealing groove; when the upper motor casing is assembled, the lower end of the upper motor casing deforms the flexible sealing ring, so that the outer end portion of the installation gap between the upper motor casing and the lower motor casing is sealed and filled by the flexible sealing ring.

[0008] Preferably, the flexible sealing ring is made of a rubber ring or a silica gel ring.

[0009] Preferably, the lower end of the upper motor housing and the upper end of the lower motor housing are mounted and matched by a slot and tooth structure, wherein the installation gap outer end of the slot and tooth structure is sealed and filled by the flexible sealing ring.

[0010] Preferably, the lower end of the lower motor housing and the control panel protective cover are fixedly and sealingly mounted and matched to form a mounting cavity, and the control panel of the motor is mounted in the mounting cavity; wherein the outgoing wire harness of the control panel penetrates through the control panel protective cover, and the flexible sealing plug is sleeved on the penetration part of the control panel protective cover.

[0011] Preferably, the inner circumferential hole of the flexible sealing plug is used to pass through the outgoing wire harness of the control panel, and the outer circumference of the flexible sealing plug is embedded in the penetration hole of the control panel protective cover.

[0012] Preferably, waterproof glue is applied between the inner circumferential hole of the flexible sealing plug and the outgoing wire harness.

[0013] Preferably, the flexible sealing plug is a rubber plug or a silica gel plug.

[0014] Preferably, the motor shaft extends upward after penetrating through the bearing chamber of the upper motor housing and is fixedly connected with the moving impeller, wherein the outer end of the bearing chamber is provided with a sealing ring sleeved on the outer circumference of the motor shaft, the sealing ring is matched with the bearing gap, and is located between the bearing chamber and the moving impeller; the outer end of the bearing chamber is provided with a notch, and the end of the sealing ring close to the bearing chamber is provided with a protrusion matched and embedded with the notch.

[0015] Preferably, the notch is pre-stored with sealing grease; wherein when the notch is matched and embedded with the corresponding protrusion, the sealing grease fills the embedded gap between the sealing ring and the bearing chamber.

[0016] The application proposes to embed a flexible sealing ring at the mounting and connecting part between the upper motor housing and the lower motor housing, so that the installation gap outer end between the upper motor housing and the lower motor housing is sealed and filled by the flexible sealing ring, avoiding external water vapor entering the internal space of the motor through the installation gap between the upper motor housing and the lower motor housing, improving the sealing and waterproof performance of the motor, and the sealing structure is simple and easy to quickly assemble in batch production.

[0017] The application further preferably proposes to sleeve a flexible sealing plug structure (of flexible material) on the penetration part of the control panel protective cover for the outgoing wire harness of the control panel, which not only can avoid external water vapor entering the internal space of the motor through the penetration part of the outgoing wire harness, but also can randomly adjust the wire direction of the outgoing wire harness during actual assembly, realizing waterproofing while increasing the universality of motor assembly.

[0018] The application further preferably proposes a sealing ring structure in the form of a notched protrusion arranged outside the bearing chamber of the upper motor housing to sealingly fit, which can avoid water vapor outside the bearing chamber from entering the motor internal space to damage the bearing, and still stably and reliably meet good sealing requirements when the motor is in high-speed rotation, thereby improving the sealing and waterproof performance of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the external structure of the motor in the specific embodiment of the utility model;

[0020] Figure 2 is Figure 1 is a sectional view in the F-F direction;

[0021] Figure 3 is Figure 1 is an exploded structural schematic diagram. DETAILED DESCRIPTION

[0022] The utility model discloses an electric machine sealing waterproof structure, including the rotor subassembly with the motor shaft fixedly installed as an organic whole, the stator subassembly at the outer periphery of rotor subassembly, the upper end and the lower end of motor shaft are connected with the upper motor housing, lower motor housing rotatablely installed respectively, the lower end portion of upper motor housing and the upper end portion of lower motor housing fixedly install and connect to form the motor internal space, wherein, the flexible sealing ring is fixedly fitted between the lower end portion of upper motor housing and the upper end portion of lower motor housing, to avoid that the external water vapor enters the motor internal space through the installation gap between upper motor housing and lower motor housing.

[0023] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment only is a part of the embodiment of the utility model, is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor should belong to the scope of the protection of the utility model.

[0024] Please see Figure 1 , Figure 2 and in conjunction with Figure 3As shown, a motor sealing waterproof structure, comprising a rotor assembly 2 fixedly connected with a motor shaft 1, a stator assembly 3 located at the outer periphery of the rotor assembly 2, the upper end and the lower end of the motor shaft 1 are respectively connected with the upper motor shell 4 and the lower motor shell 5 in a relatively rotatable manner; the lower end of the upper motor shell 4 and the upper end of the lower motor shell 5 are fixedly connected to form a motor internal space 6 (the rotor assembly 2 and the stator assembly 3 are located in the motor internal space 6), wherein the flexible sealing ring 7 is fixedly embedded between the lower end of the upper motor shell 4 and the upper end of the lower motor shell 5, so as to prevent external water vapor from entering the motor internal space 6 through the installation gap between the upper motor shell 4 and the lower motor shell 5; preferably, in the embodiment, the flexible sealing ring 7 is a rubber ring; in other embodiments, a silica gel ring or other known flexible sealing ring 7 with similar sealing effect can also be used.

[0025] Preferably, in the embodiment, the upper end of the lower motor shell 5 is provided with a sealing groove 5a, and the flexible sealing ring 7 is embedded in the sealing groove 5a; when the upper motor shell 4 is assembled, the lower end of the upper motor shell 4 extrudes and deforms the flexible sealing ring 7, so that the installation gap between the upper motor shell 4 and the lower motor shell 5 is sealed and filled by the flexible sealing ring 7;

[0026] In other embodiments, the lower end of the upper motor shell 4 can be provided with a sealing groove, and the flexible sealing ring 7 is embedded in the sealing groove; when the lower motor shell 5 is assembled, the upper end of the lower motor shell 5 extrudes and deforms the flexible sealing ring 7, so that the installation gap between the upper motor shell 4 and the lower motor shell 5 is sealed and filled by the flexible sealing ring 7, which can achieve similar implementation effects as the embodiment, and these are within the variable implementation range of the application.

[0027] Preferably, in order to facilitate efficient assembly, in the embodiment, the lower end of the upper motor shell 4 and the upper end of the lower motor shell 5 are connected by a slot-tooth structure 8, wherein the outer end 8a of the installation gap of the slot-tooth structure 8 is sealed and filled by the flexible sealing ring 7; in order to further ensure the installation strength, the upper motor shell 4 and the lower motor shell 5 are further fastened and connected by a plurality of fasteners;

[0028] Preferably, in order to further improve the sealing waterproof effect, in the present embodiment, the lower end of the lower motor housing 5 is fixedly and sealingly installed in cooperation with the control panel protective cover 9 to form an installation cavity 10, and the control panel 11 of the motor is installed in the installation cavity 10; wherein the lead bundle (publicly known structure, not shown in the figure) of the control panel 11 penetrates through the control panel protective cover 9, and the lead bundle is sleeved with a flexible sealing plug 12 at the penetration position of the control panel protective cover 9; further preferably, in order to facilitate efficient assembly, the inner circumferential hole 12a of the flexible sealing plug 12 is used to pass through the lead bundle of the control panel, and the outer circumference of the flexible sealing plug 12b is embedded in the penetration hole of the control panel protective cover 9; waterproof glue is applied between the inner circumferential hole 12a of the flexible sealing plug 12 and the lead bundle, further improving the waterproof sealing effect; preferably, in the present embodiment, the flexible sealing plug 12 is a rubber plug, and in other embodiments, the flexible sealing plug 12 can also be a silica gel plug or other publicly known flexible sealing plug structure with similar effect.

[0029] Preferably, in order to further improve the sealing waterproof effect, in the present embodiment, the motor shaft 1 extends upward after penetrating the bearing chamber 4a of the upper motor housing 4 and is fixedly installed and connected with the moving impeller 13 (including the moving impeller cover 13a), wherein the outer end of the bearing chamber 4a is provided with a sealing ring 14 (the sealing ring 14 can be a rubber part or an injection molded part or a metal part, which is not particularly limited in the present embodiment) sleeved on the outer circumference of the motor shaft 1, the sealing ring 14 is in clearance fit with the bearing 4b (installed in the bearing chamber 4a) and located between the bearing chamber 4a and the moving impeller 13; the outer end of the bearing chamber 4a is provided with a plurality of notches 4c, and the end of the sealing ring 14 close to the bearing chamber 4c is provided with a protrusion 14a in sealing and embedding fit with each notch 4c; further preferably, in the present embodiment, the notches 4c are pre-stored with sealing grease; wherein when the notch 4c and its corresponding protrusion 14a are in embedding fit, the sealing grease fills the embedding gap between the flexible sealing ring 7 and the bearing chamber 4a.

[0030] The present embodiment proposes to embed a flexible sealing ring 7 at the installation connection between the upper motor housing 4 and the lower motor housing 5, so that the outer end of the installation gap between the upper motor housing 4 and the lower motor housing 5 is sealed and filled by the flexible sealing ring 7, avoiding external water vapor entering the internal space 6 of the motor through the installation gap between the upper motor housing 4 and the lower motor housing 5, improving the sealing waterproof performance of the motor, and the sealing structure is simple and easy to quickly assemble in mass production;

[0031] The embodiment also proposes that the outgoing wire harness of the control panel is sleeved with a flexible sealing plug 12 structure (flexible material) at the penetrating position of the control panel protective cover 9, which can not only avoid the entry of external water vapor into the motor internal space 6 through the penetrating position of the outgoing wire harness, but also can randomly adjust the wire direction of the outgoing wire harness during actual assembly, realizing waterproofing and increasing the universality of motor assembly.

[0032] The embodiment also proposes that a sealing ring 14 structure in the form of a notch-protrusion is arranged at the outer end of the bearing chamber of the upper motor housing 4 for sealing embedding, which can avoid the entry of water vapor outside the bearing chamber 4a into the motor internal space 6 to damage the bearing 4b, and can still stably and reliably meet the good sealing requirement when the motor is in high-speed rotation, thereby improving the sealing and waterproof performance of the motor.

[0033] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

[0034] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment includes only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A waterproof structure of a motor seal, comprising a rotor assembly fixedly connected with a motor shaft, a stator assembly located at the outer periphery of the rotor assembly, and an upper end and a lower end of the motor shaft respectively rotatably connected with an upper motor shell and a lower motor shell; characterized in that, The lower end of the upper motor shell is fixedly connected with the upper end of the lower motor shell to form a motor internal space, wherein a flexible sealing ring is fixedly embedded between the lower end of the upper motor shell and the upper end of the lower motor shell to avoid external water vapor entering the motor internal space through the installation gap between the upper motor shell and the lower motor shell.

2. The motor seal according to claim 1, wherein, The lower end of the upper motor shell is provided with a sealing groove, and a flexible sealing ring is embedded in the sealing groove; when the lower motor shell is assembled, the upper end of the lower motor shell extrudes the flexible sealing ring to deform, so that the installation gap between the upper motor shell and the lower motor shell is sealed and filled by the flexible sealing ring; or the upper end of the lower motor shell is provided with a sealing groove, and a flexible sealing ring is embedded in the sealing groove; when the upper motor shell is assembled, the lower end of the upper motor shell extrudes the flexible sealing ring to deform, so that the outer end of the installation gap between the upper motor shell and the lower motor shell is sealed and filled by the flexible sealing ring.

3. The motor sealing and waterproof structure according to claim 1 or 2, characterized in that, The flexible sealing ring is a rubber ring or a silica gel ring.

4. The motor seal according to claim 1, wherein, The lower end of the upper motor shell is fixedly connected with the upper end of the lower motor shell to form a motor internal space, wherein a flexible sealing ring is fixedly embedded between the lower end of the upper motor shell and the upper end of the lower motor shell to avoid external water vapor entering the motor internal space through the installation gap between the upper motor shell and the lower motor shell.

5. The motor seal according to claim 1, wherein the seal is a labyrinth seal. The lower end of the lower motor shell is fixedly and sealingly connected with the control panel protective cover to form an installation cavity, and the control panel of the motor is installed in the installation cavity; wherein the lead bundle of the control panel penetrates through the control panel protective cover, and a flexible sealing plug is sleeved on the penetration part of the control panel protective cover.

6. The motor seal according to claim 5, wherein, The inner circumferential hole of the flexible sealing plug is used for penetrating the lead bundle of the control panel, and the outer circumference of the flexible sealing plug is embedded in the penetration hole of the control panel protective cover.

7. The motor seal according to claim 6, wherein, Waterproof glue is applied between the inner circumferential hole of the flexible sealing plug and the lead bundle.

8. The motor sealing and waterproof structure according to claim 5 or 6 or 7, characterized in that, The flexible sealing plug is a rubber plug or a silica gel plug.

9. The motor seal according to claim 1, wherein, The motor shaft penetrates the bearing chamber of the upper motor shell and extends upward to be fixedly connected with the moving impeller, wherein the outer end of the bearing chamber is provided with a sealing ring sleeved on the outer circumference of the motor shaft, the sealing ring is matched with the bearing gap, and is located between the bearing chamber and the moving impeller; the outer end of the bearing chamber is provided with a notch, and the end portion of the sealing ring close to the bearing chamber is provided with a protrusion corresponding to the notch and embedded and matched in sealing.

10. The motor seal according to claim 9, wherein, The notch is pre-stored with sealing grease; wherein when the notch is embedded and matched with the corresponding protrusion, the sealing grease fills the embedded gap between the sealing ring and the bearing chamber.

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