CN219041548U

CN219041548U - Waterproof structure for main shaft hole outgoing line of hub motor

Info

Publication number: CN219041548U
Application number: CN202223542739.4U
Authority: CN
Inventors: 杨春晖; 张苏北; 王英喆
Original assignee: Bafang Electric Suzhou Co Ltd
Current assignee: Bafang Electric Suzhou Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-16
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a wire-outlet waterproof structure of a spindle hole of a hub motor, which comprises a motor spindle, a stator assembly, a wire harness and a cable joint, wherein the stator assembly is arranged in the middle of the motor spindle; a primary waterproof assembly and a secondary waterproof assembly are arranged along the main shaft hole, the primary waterproof assembly is arranged at the end part of the main shaft hole, and the secondary waterproof assembly is arranged at the position, close to the stator assembly, in the main shaft hole; the utility model adopts a double waterproof structure, can effectively prevent water from entering the main shaft hole, and has good waterproof effect.

Description

Waterproof structure for main shaft hole outgoing line of hub motor

Technical Field

The utility model belongs to the technical field of hub motors, and particularly relates to a waterproof structure for a main shaft hole outgoing line of a hub motor.

Background

The hub motor of the electric boosting bicycle is arranged in a wheel, and after the electric boosting bicycle is electrified, power is transmitted to the wheel for boosting. In recent years, hub motors tend to be more compact, and since the motor hub is in a rotating state during operation, wire harness outgoing wires of the hub motor can only be led out from an opening on one side in a main shaft. The electric bicycle usually experiences the road conditions of wading in the in-service use, and exposes in the open air for a long time, leads to the very easy water inflow in the wire hole of main shaft pencil, and parts such as coil, circuit board, magnet steel inside the motor can consequently have impaired risk, and this can greatly reduce the life of motor, and the motor can be burnt out even when serious.

Disclosure of Invention

Aiming at the problems and the technical requirements, the utility model provides the waterproof structure for the wire outlet of the spindle hole of the hub motor, which is used for applying double waterproof to the spindle hole in the modes of glue injection and rubber sleeve arrangement, so that the problem that the wire outlet of the spindle is easy to enter water is solved.

The technical scheme of the utility model is as follows: the utility model provides a wheel hub motor spindle hole waterproof construction that is qualified for next round of competitions, includes motor spindle, stator module, pencil and cable joint, stator module installs in the middle part of motor spindle, and the motor spindle of stator module one side is the solid shaft, and the motor spindle of opposite side is the wire shaft, is equipped with the spindle hole in the wire shaft, and the pencil passes the spindle hole from outside inwards, is connected to stator module in, and outside pencil is connected with the cable joint; the primary waterproof assembly and the secondary waterproof assembly are arranged along the spindle hole, the primary waterproof assembly is arranged at the end part of the spindle hole, and the secondary waterproof assembly is arranged in the spindle hole and is close to the stator assembly.

Further, the main shaft hole is formed in the core part of the wire outlet shaft, the primary waterproof assembly comprises a rubber ring sleeve and a limiting step, the limiting step is formed in the end part of the main shaft hole and is coaxially arranged with the main shaft hole, the inner diameter of the limiting step is larger than that of the main shaft hole, the rubber ring sleeve is matched and sleeved on the inner side of the limiting step, the wire harness penetrates through the rubber ring sleeve, and the wire harness is tightly matched with the rubber ring sleeve.

Further, the outer port of the limit step is arranged on the end face of the wire outlet shaft, the rubber ring sleeve is equal to the limit step in length, the rubber ring sleeve is bonded or tightly matched with the limit step through glue, one end of the rubber ring sleeve is propped against the step face of the limit step, and the other end of the rubber ring sleeve is flush with the end face of the wire outlet shaft.

Further, the secondary waterproof assembly comprises a glue injection hole and a nut, the glue injection hole is led into the main shaft hole from the peripheral surface of the wire outlet shaft, the nut is sleeved on the outer side of the wire outlet shaft, and the nut can seal up a port of the glue injection hole.

Further, the sealant can be injected into the spindle hole through the sealant injection hole, and the sealant completely wraps the wire harness, so that the wire harness and the spindle hole are sealed.

Further, the main shaft hole is connected with the stator assembly through the inclined hole, and the wire harness sequentially passes through the main shaft hole and the inclined hole from outside to inside and is connected into the stator assembly.

The utility model has the beneficial effects that: according to the utility model, the rubber ring sleeve is additionally arranged at the wire outlet of the wire harness of the main shaft hole, the outer side of the rubber ring sleeve is tightly abutted against the limiting step, the inner side of the rubber ring sleeve is tightly matched with the wire harness, the rubber ring sleeve is a primary waterproof assembly, the rubber is bonded to enable the connection between the rubber ring sleeve and the limiting step to be more stable, and the rubber ring sleeve is convenient to replace and maintain in the later period; the stator module is pressed close to the waterproof subassembly of second grade, adopts the injecting glue mode to fill downthehole gap, makes between pencil and the main line hole by the complete parcel of sealant, and dual waterproof construction can effectively solve the downthehole infiltration problem of current in-wheel motor main shaft, prevents that water from getting into the main shaft along the pencil, other parts in the protection motor.

Drawings

FIG. 1 is a general structural diagram of a waterproof structure for a spindle hole outlet of a hub motor according to the present utility model;

FIG. 2 is a block diagram of a primary waterproof assembly in the waterproof structure of a spindle hole outlet of the hub motor according to the present utility model;

marked in the figure as: the motor spindle 1, the solid shaft 2, the wire outlet shaft 3, the spindle hole 31, the inclined hole 32, the stator assembly 4, the wire harness 5, the cable connector 6, the primary waterproof assembly 7, the rubber ring sleeve 71, the limiting step 72, the secondary waterproof assembly 8, the glue injection hole 81 and the nut 82.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

1-2 show a waterproof structure for a main shaft hole outgoing line of a hub motor, which comprises a motor main shaft 1, a stator assembly 4, a wire harness 5 and a cable connector 6.

The stator assembly 4 is arranged in the middle of the motor main shaft 1, the motor main shaft 1 on one side of the stator assembly 4 is a solid shaft 2, the motor main shaft 1 on the other side is a wire outlet shaft 3, a main shaft hole 31 is arranged in the wire outlet shaft 3, the main shaft hole 31 and the stator assembly 4 are connected through an inclined hole 32, the wire harness 5 sequentially passes through the main shaft hole 31 and the inclined hole 32 from outside to inside, and is connected with the stator assembly 4, and the external wire harness 5 is connected with the cable joint 6.

Along the main shaft hole 31, a primary waterproof assembly 7 and a secondary waterproof assembly 8 are arranged, wherein the primary waterproof assembly 7 is arranged at the end part of the main shaft hole 31, and the secondary waterproof assembly 8 is arranged in the main shaft hole 31 and is close to the stator assembly 4.

The primary waterproof assembly 7 comprises a rubber ring sleeve 71 and a limiting step 72, the main shaft hole 31 is arranged on the core part of the wire outlet shaft 3, the limiting step 72 is arranged at the end part of the main shaft hole 31, the limiting step 72 and the main shaft hole 31 are coaxially arranged, the inner diameter of the limiting step 72 is larger than that of the main shaft hole 31, the rubber ring sleeve 71 is matched and sleeved on the inner side of the limiting step 72, the wire harness 5 penetrates through the rubber ring sleeve 71, and the wire harness 5 is tightly matched with the rubber ring sleeve 71. The outer port of the limiting step 72 is arranged on the end face of the wire outlet shaft 3, the rubber ring sleeve 71 and the limiting step 72 are equal in length, the rubber ring sleeve 71 and the limiting step 72 are bonded or tightly matched through glue, one end of the rubber ring sleeve 71 abuts against the step face of the limiting step 72, and the other end of the rubber ring sleeve 71 is flush with the end face of the wire outlet shaft 3.

The rubber ring sleeve 71 in the primary waterproof assembly 7 has a waterproof effect, the wire harness 5 can be penetrated from the inner hole of the rubber ring sleeve 71 through tight fit by utilizing the toughness of the rubber ring sleeve 71, and the rubber ring sleeve 71 tightly wraps the wire harness 5 to prevent water from entering.

The secondary waterproof assembly 8 comprises a glue injection hole 81 and a nut 82, the glue injection hole 81 is led into the main shaft hole 31 from the peripheral surface of the wire outlet shaft 3, the nut 82 is sleeved on the outer side of the wire outlet shaft 3, and the nut 82 can seal the port of the glue injection hole 81. The sealant can be injected into the spindle hole 31 through the sealant injection hole 81, and the sealant completely wraps the wire harness 5, so that the wire harness 5 and the spindle hole 31 are sealed.

The assembly process of the utility model comprises the following steps: the wire harness outgoing line of the main shaft hole 31 of the motor adopts a rubber ring sleeve 71, the rubber ring sleeve 71 is firstly arranged in the main shaft hole 31 until one side of the rubber ring sleeve 71 is propped against the step surface of the limiting step 72, the rubber ring sleeve 71 and the peripheral surface of the limiting step 72 are in adhesive connection, after the connection is firm, the wire harness 5 of the motor passes through the inner hole of the rubber ring sleeve 71 from outside to inside through tight fit, the tight fit of the rubber ring sleeve 71 and the wire harness 5 can be realized by utilizing the toughness of the rubber ring sleeve 71, the rubber ring sleeve 71 tightly wraps the wire harness 5, and water is prevented from entering the main shaft hole 31 along the wire harness 5; when the wire harness 5 penetrates into the motor and is connected with the stator assembly 4, sealant is filled into the main shaft hole 31 through the glue injection hole 81, the wire harness 5 is in sealing connection with the main shaft hole 31 through the sealant, a secondary waterproof effect is achieved, after glue injection is finished, the nut 82 is screwed on the outer side of the wire outlet shaft 3, and the glue injection hole is blocked by the nut 82 to protect the inside glue injection hole.

While the utility model has been described with respect to several preferred embodiments, the scope of the utility model is not limited thereto, and any changes and substitutions that would be apparent to one skilled in the art within the scope of the utility model are intended to be included within the scope of the utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A waterproof structure of a main shaft hole outgoing line of a hub motor is characterized in that: the motor main shaft at one side of the stator assembly is a solid shaft, the motor main shaft at the other side of the stator assembly is a wire outlet shaft, a main shaft hole is formed in the wire outlet shaft, the wire harness penetrates through the main shaft hole from outside to inside and is connected to the stator assembly, and the external wire harness is connected with the cable joint; the primary waterproof assembly and the secondary waterproof assembly are arranged along the spindle hole, the primary waterproof assembly is arranged at the end part of the spindle hole, and the secondary waterproof assembly is arranged in the spindle hole and is close to the stator assembly.

2. The waterproof structure for the wire outlet of the spindle hole of the hub motor according to claim 1, wherein: the main shaft hole is arranged on the core part of the wire outlet shaft, the primary waterproof assembly comprises a rubber ring sleeve and a limiting step, the limiting step is arranged at the end part of the main shaft hole and is coaxially arranged with the main shaft hole, the inner diameter of the limiting step is larger than that of the main shaft hole, the rubber ring sleeve is matched and sleeved on the inner side of the limiting step, and the wire harness penetrates through the rubber ring sleeve and is tightly matched with the rubber ring sleeve.

3. The waterproof structure for the wire outlet of the spindle hole of the hub motor according to claim 2, wherein: the outer port of the limit step is arranged on the end face of the wire outlet shaft, the rubber ring sleeve is equal to the limit step in length, the rubber ring sleeve is bonded or tightly matched with the limit step through glue, one end of the rubber ring sleeve is abutted to the step face of the limit step, and the other end of the rubber ring sleeve is flush with the end face of the wire outlet shaft.

4. A hub motor spindle hole outlet waterproof structure according to claim 3, wherein: the secondary waterproof assembly comprises a glue injection hole and a nut, the glue injection hole is led into the main shaft hole from the peripheral surface of the wire outlet shaft, the nut is sleeved on the outer side of the wire outlet shaft, and the nut can seal the port of the glue injection hole.

5. The waterproof structure for the wire outlet of the spindle hole of the hub motor as claimed in claim 4, wherein: the sealant can be injected into the spindle hole through the sealant injection hole, and the sealant completely wraps the wire harness, so that the wire harness and the spindle hole are sealed.

6. The waterproof structure for the wire outlet of the spindle hole of the hub motor as claimed in claim 4, wherein: the main shaft hole is connected with the stator assembly through the inclined hole, and the wire harness sequentially passes through the main shaft hole and the inclined hole from outside to inside and is connected into the stator assembly.