CN214959023U

CN214959023U - Waterproof structure of external rotor motor

Info

Publication number: CN214959023U
Application number: CN202121497365.1U
Authority: CN
Inventors: 郑奎
Original assignee: Dongguan Shengtu New Energy Technology Co ltd
Current assignee: Dongguan Shengtu New Energy Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-11-30
Anticipated expiration: 2031-07-02

Abstract

The utility model provides a pair of external rotor electric machine's waterproof construction, the on-line screen storage device comprises a base, the rotor shell, the base includes the chassis, annular supporting part, axle sleeve portion, the rotor shell is including top dish and cyclic annular wall portion, annular supporting part and cyclic annular wall portion are provided with first annular blend stop and second annular blend stop respectively, first annular blend stop and second annular blend stop dislocation set form the operation gap, annular supporting part outside cover is equipped with sealed gluey ring, sealed gluey ring is including collar portion, the oil storage tank adjoins with the operation gap, the oil storage tank intussuseption is filled with lubricating grease, the annular wall portion is outer along being equipped with the annular groove of keeping away who matches with collar portion. Utilize first annular blend stop and the second annular blend stop of dislocation set to form the operation gap, lubricating grease in the oil storage tank covers in operation gap department, prevents that outside aqueous vapor from the operation gap from entering into inside the motor, keeps off the ring portion and stretches into the annular and keep away the position in the groove, prevents that the lubricating grease in the oil storage tank from leaking, guarantees the water-proof effects of motor, improves motor life.

Description

Waterproof structure of external rotor motor

Technical Field

The utility model relates to a motor indicates an outer rotor electric machine's waterproof construction especially.

Background

The motor is widely used in various fields as a device capable of converting electric energy into driving torque. In a humid environment, the motor needs to be waterproof, the inside of the motor is protected from being entered by moisture, and the short circuit of an internal circuit and the rusting of metal parts are prevented. The general motor waterproof measure is to brush waterproof glue on a circuit board and coat antirust paint on an iron core, and although the waterproof effect of the method is good, the processing cost is high and the production efficiency is low due to the complex process.

Disclosure of Invention

The utility model aims to solve the problem that a waterproof construction of external rotor electric machine is provided, improves the water-proof effects of motor through simple waterproof construction, easily operation, low cost.

Solve above-mentioned technical problem according to the utility model provides a pair of external rotor electric machine's waterproof construction, the on-line screen storage device comprises a base, the rotor shell, the base includes integrated into one piece's chassis, annular supporting part, axle sleeve portion, annular supporting part sets up edge outside the chassis, axle sleeve portion sets up in the chassis center and loads first bearing and second bearing, the rotor shell includes the apical disk of integrative punching press and sets up the annular wall portion that edge outside the apical disk, apical disk center fixedly connected with and first bearing and second bearing are connected the pivot, annular supporting part and annular wall portion have equal external diameter, edge and annular wall portion bottom outer edge are provided with first annular blend stop and second annular blend stop respectively in the annular supporting part top, first annular blend stop and second annular blend stop dislocation set form the operation gap, annular supporting part outside cover is equipped with the seal rubber ring, seal rubber ring is including cup jointing the lantern ring portion that follows outside annular supporting part, Set up in the fender ring portion of lantern ring portion one end, lantern ring portion inner circle one side is encircleed and is provided with the oil storage tank, and the oil storage tank adjoins with the running gap, and it has lubricating grease to fill on the oil storage tank, and the annular wall portion is outer along being provided with keeps away a groove with the annular that keeps off ring portion and match, keeps off ring portion and stretches into in the annular keeps away a groove.

Preferably, a shaft hole for the rotating shaft to pass through is arranged between the chassis and the shaft sleeve portion in a penetrating manner, a first bearing seat and a second bearing seat matched with the first bearing and the second bearing are respectively arranged at two ends of the shaft hole, and the first bearing and the second bearing are respectively loaded on the first bearing seat and the second bearing seat.

Preferably, the center of the bottom of the top disc is provided with a positioning pressing table, the rotating shaft penetrates through the center of the positioning pressing table, and the bottom end of the positioning pressing table abuts against the top end of the first bearing.

Preferably, the outer diameter of the shaft sleeve part gradually shrinks from bottom to top to form a circular truncated cone, and a limiting notch for positioning the iron core is formed in one side of the outer edge of the shaft sleeve part.

The utility model has the advantages that: the utility model provides an external rotor electric machine's waterproof construction sets up unique assembly structure, utilizes the first annular blend stop and the second annular blend stop of dislocation set to form the operation gap, can not cause the interference to the gyration of rotor shell, can block simultaneously that dust and aqueous vapor get into inside the motor, and inside the lubricating grease that reduces in the oil storage tank entered into the motor. The sealing rubber ring is sleeved on the base, the lubricating grease in the oil storage tank covers the operation gap to play a role of an oil seal, external water vapor is further prevented from entering the motor from the operation gap, the baffle ring part stretches into the annular avoiding groove, the lubricating grease in the oil storage tank is prevented from leaking, the waterproof effect of the motor is ensured, the loss of the lubricating grease is reduced, the baffle ring part is pulled out from the annular avoiding groove, lubricating grease can be added into the oil storage tank, and the motor can be ensured to be in waterproof protection for a long time. The motor is simple in structure, easy to operate and low in cost, and can effectively improve the waterproof effect and the service life of the motor.

Drawings

Fig. 1 illustrates a schematic cross-sectional structure of the present invention.

Fig. 2 illustrates a partially enlarged schematic view of a portion a in fig. 1 according to the present invention.

Fig. 3 illustrates a schematic structural diagram of the sealant ring of the present invention.

The reference numbers illustrate: the rotor comprises a base 1, a chassis 10, an annular supporting part 11, a first annular barrier strip 110, a shaft sleeve part 12, a shaft hole 120, a first bearing seat 121, a second bearing seat 122, a limiting notch 123, a rotor shell 2, a top disc 20, an annular wall part 21, a second annular barrier strip 210, an annular avoiding groove 211, a positioning pressing table 22, a first bearing 3, a second bearing 4, a rotating shaft 5, a sealing rubber ring 6, a sleeve ring part 60, a barrier ring part 61 and an oil storage groove 62.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments.

All other embodiments of the person skilled in the art, which are obtained without inventive work on the basis of the described embodiments of the present disclosure, are within the scope of protection of the present disclosure.

Refer to fig. 1-3.

The utility model provides a waterproof structure of external rotor motor, contain base 1, rotor shell 2, base 1 includes integrated into one piece's chassis 10, annular support portion 11, axle sleeve portion 12, annular support portion 11 sets up in the chassis 10 outer edge, axle sleeve portion 12 sets up in the chassis 10 center and loads first bearing 3 and second bearing 4, rotor shell 2 includes integrative punching press's top plate 20 and sets up in the annular wall portion 21 of top plate 20 outer edge, top plate 20 center fixedly connected with the pivot 5 of first bearing 3 and second bearing 4 connection, annular support portion 11 and annular wall portion 21 have equal external diameter, annular support portion 11 top inner edge and annular wall portion 21 bottom outer edge are provided with first annular blend stop 110 and second annular blend stop 210 respectively, first annular blend stop 110 and second annular blend stop 210 dislocation set form the operation gap, annular support portion 11 outside seals the rubber ring 6, the sealing rubber ring 6 comprises a sleeve ring portion 60 sleeved on the outer edge of the annular supporting portion 11 and a retaining ring portion 61 arranged at one end of the sleeve ring portion 60, an oil storage groove 62 is arranged on one side of the inner ring of the sleeve ring portion 60 in a surrounding mode, the oil storage groove 62 is adjacent to an operation gap, lubricating grease is filled in the oil storage groove 62, an annular retaining groove 211 matched with the retaining ring portion 61 is arranged on the outer edge of the annular wall portion 21, and the retaining ring portion 61 extends into the annular retaining groove 211.

During the specific assembly, install first bearing 3 and second bearing 4 on axle sleeve portion 12 earlier, fix pivot 5 on rotor shell 2, pivot 5 is connected on first bearing 3 and second bearing 4, realizes the fit of base 1 and rotor shell 2, and first annular blend stop 110 and second annular blend stop 210 dislocation form the operation gap, overlaps sealed rubber ring 6 on base 1 again. The principle is as follows: the first annular barrier strip 110 and the second annular barrier strip 210 which are arranged in a staggered mode form an operation gap, interference on rotation of the rotor shell 2 is avoided, meanwhile, dust and water vapor can be prevented from entering the motor, and lubricating grease in the oil storage tank 62 can be reduced from entering the motor. The suit seals the gum ring 6 on base 1, the lubricating grease cover in the oil storage tank 62 plays the effect of oil blanket in operation gap department, it is inside further to prevent that outside aqueous vapor from entering into the motor from the operation gap, keep off ring portion 61 and stretch into the annular and keep away a groove 211, prevent the lubricating grease leakage in the oil storage tank 62, guarantee the water-proof effects of motor, reduce the loss of lubricating grease, keep away a groove 211 and pull out through keeping off ring portion 61 from the annular, can add lubricating grease in the oil storage tank 62, the interpolation of lubricating grease is more convenient, guarantee that the motor can be in water proof for a long time. The motor is simple in structure, easy to operate and low in cost, and can effectively improve the waterproof effect and the service life of the motor.

Based on the above embodiment, a shaft hole 120 for the rotating shaft 5 to pass through is provided between the chassis 10 and the boss portion 12, a first bearing seat 121 and a second bearing seat 122 matched with the first bearing 3 and the second bearing 4 are respectively provided at two ends of the shaft hole 120, and the first bearing 3 and the second bearing 4 are respectively loaded on the first bearing seat 121 and the second bearing seat 122. Set up shaft hole 120 on axle sleeve portion 12, alleviate the weight of base 1, be connected with pivot 5 both sides through first bearing 3 and second bearing 4, improve pivot 5 rotational stability.

Based on the above-mentioned embodiment, the center of the bottom of the top plate 20 is provided with the positioning pressing table 22, the rotating shaft 5 penetrates through the center of the positioning pressing table 22, and the bottom end of the positioning pressing table 22 abuts against the top end of the first bearing 3. The positioning pressing table 22 abuts against the top end of the first bearing 3, limits the installation height of the rotor shell 2, controls the size of the running gap, ensures that the first annular barrier strip 110 and the second annular barrier strip 210 do not interfere with each other, and can reduce the phenomenon that water and air enter the motor from the running gap.

Based on above-mentioned embodiment, 12 external diameters of axle sleeve portion contract gradually from supreme down and are the round platform form, and axle sleeve portion 12 is provided with the spacing notch 123 that supplies the iron core location along one side outward, alleviates base 1's weight when guaranteeing to have sufficient joint strength between axle sleeve portion 12 and chassis 10, utilizes spacing notch 123 to assemble the iron core and makes the location to axle sleeve portion 12, guarantees that the iron core installation targets in place.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides an outer rotor electric machine's waterproof construction, contains base (1), rotor shell (2), its characterized in that, base (1) is including integrated into one piece's chassis (10), annular supporting part (11), axle sleeve portion (12), annular supporting part (11) set up in chassis (10) outer edge, axle sleeve portion (12) set up in chassis (10) center and load first bearing (3) and second bearing (4), rotor shell (2) including integrative punching press take over (20) with set up in the cyclic annular wall portion (21) that take over outside take over of take over (20), take over (20) center fixedly connected with first bearing (3) with pivot (5) that second bearing (4) are connected, annular supporting part (11) with cyclic annular wall portion (21) have equal external diameter, the interior edge of annular supporting part (11) top with the outer edge in cyclic annular wall portion (21) bottom is provided with first annular blend stop (110) respectively ) And second annular blend stop (210), first annular blend stop (110) with second annular blend stop (210) dislocation set forms the operation gap, annular supporting part (11) outside cover is equipped with sealed gluey ring (6), sealed gluey ring (6) are including cup jointing collar portion (60) on annular supporting part (11) outer edge, set up in collar portion (61) of collar portion (60) one end, collar portion (60) inner circle one side is encircleed and is provided with oil storage tank (62), oil storage tank (62) with the operation gap borders on, the packing has lubricating grease on oil storage tank (62), annular wall portion (21) outer along be provided with keep off annular that collar portion (61) matches and keep away position groove (211), keep off ring portion (61) and stretch into in annular keep away position groove (211).

2. The waterproof structure of an external rotor motor according to claim 1, wherein a shaft hole (120) for the rotating shaft (5) to pass through is penetratingly disposed between the chassis (10) and the bushing portion (12), a first bearing seat (121) and a second bearing seat (122) matched with the first bearing (3) and the second bearing (4) are respectively disposed at two ends of the shaft hole (120), and the first bearing (3) and the second bearing (4) are respectively loaded on the first bearing seat (121) and the second bearing seat (122).

3. The waterproof structure of the external rotor motor according to claim 1, wherein a positioning pressing table (22) is arranged at the bottom center of the top disc (20), the rotating shaft (5) is arranged at the center of the positioning pressing table (22) in a penetrating manner, and the bottom end of the positioning pressing table (22) abuts against the top end of the first bearing (3).

4. The waterproof structure of an external rotor motor according to claim 1, wherein the outer diameter of the boss portion (12) gradually shrinks from bottom to top to form a circular truncated cone shape, and a limit notch (123) for positioning the iron core is formed on one side of the outer edge of the boss portion (12).