CN217824526U

CN217824526U - Waterproof structure of motor output shaft end

Info

Publication number: CN217824526U
Application number: CN202221689796.2U
Authority: CN
Inventors: 张磊; 朱智平; 任凯乐; 陆晨亮; 高铭
Original assignee: Dongyang Linix Machine Electricity Co Ltd
Current assignee: Dongyang Linix Machine Electricity Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-15
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to the technical field of electric motor, specifically be a motor goes out waterproof construction of axle head, including motor body and the gear box that links to each other with motor body, motor body includes the rotor shaft, be equipped with the input port on the gear box, the one end of rotor shaft extends and passes through to motor body the input port stretches into the inside of gear box, motor body is close to the one end of rotor shaft output and is equipped with the notch, and the notch is interior concavity along radially being from the extroversion, the input port border of gear box is equipped with annular arch, and annular arch highly is higher than the height that is close to the input port terminal surface on the gear box. The utility model discloses a notch forms the structure of preventing flowing backwards of motor output for in the water that produces can not permeate the gear box from the output of motor in the motor, bearing and gear in the protection gear box form the waterproof construction who need not the buckler, simple structure, and simple to operate when guaranteeing waterproof performance, the cost is reduced.

Description

Waterproof structure of motor output shaft end

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a waterproof construction of motor play axle head is related to.

Background

The motor can generate heat when working, need dispel the heat and cool down, when working under some moist environment, produces water easily, especially when the motor is used for the operational environment of condensation ice-making, produces the comdenstion water easily, if the comdenstion water enters into the gear box from the output shaft of motor this moment, leads to the lubrication inefficacy easily, gear wear to arouse bearing and gear rust, the working life of greatly reduced gear.

For example, the patent of the Chinese utility model with the application number of 201820597084.5 is named as a waterproof and breathable structure of a gear box motor, and comprises a breathable film, a breathable hole channel, a waterproof boss and a protective cover; the breathable film is riveted at one end of the breathable hole channel, the waterproof boss is arranged above the breathable film, and the protective cover is clamped with the waterproof boss; a drainage and ventilation channel is also arranged between the protective cover and the waterproof boss. The utility model discloses an in though can guaranteeing the motor operation process, when heat and pressure in the release gear box, prevent that water from seeing through ventilative film and getting into in the motor, improved the security and the reliability of motor, but waterproof construction need set up waterproof boss, and occupation space is big on the one hand, and on the other hand installation is troublesome, and the boss also has certain machining precision requirement with the cooperation of protection casing, needs higher processing cost and later maintenance cost.

Disclosure of Invention

The utility model aims at providing a motor goes out axle head waterproof construction, goes out axle head self through setting up the motor and forms the structure that prevents the refluence, need not to assemble waterproof gasket, can realize the water-proof effects between motor output and the gear box input, has both guaranteed the sealed of gear box, makes simple structure again, has practiced thrift installation cost and later maintenance's cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a motor goes out waterproof construction of axle head, includes motor body and the gear box that links to each other with motor body, motor body includes the rotor shaft, be equipped with the input port on the gear box, the one end of rotor shaft extends to motor body outward and passes through the input port stretches into the inside of gear box, motor body is close to the one end of rotor shaft output and is equipped with the notch, and the notch is interior concavity along radially outwards inwards from, the input port border of gear box is equipped with annular protruding, and annular protruding height is higher than the height that is close to the input port terminal surface on the gear box. Form the structure of preventing flowing backwards of motor output through the notch, when rivers were to the output of motor, the notch is with the help of gravity, make water not to the rotation center gathering of rotor shaft, but pile up the edge at the notch, when gathering to the certain extent, the whereabouts is in the protruding outside of annular, the input port is lived in the protruding protection of annular, make the water that produces in the motor can not permeate the gear box from the output of motor, bearing and gear in the protection gear box, form the waterproof construction who need not the buckler, moreover, the steam generator is simple in structure, high durability and convenient installation, when guaranteeing waterproof performance, and the cost is reduced.

Preferably, the maximum aperture of the recess is larger than the maximum outer diameter of the annular projection. The biggest hole side of notch also is the lower extreme of notch, and rivers gathering is in the edge of notch, when gathering to a certain extent, breaks through the tensile of water surface and drips downwards, and the perpendicular drop of this moment can not fall into inside the gear box in the bellied outside of annular, has further improved water-proof effects.

Preferably, the motor body comprises a cast aluminum rotor and a stator, the cast aluminum rotor is fixed on the outer portion of the rotor shaft, the cast aluminum rotor and the stator are rotatably connected on the inner portion of the stator, and the notch is located on the cast aluminum rotor. The cast aluminum rotor rotates along with the rotor shaft, moisture in the motor flows out from a gap between the cast aluminum rotor and the stator, the notch is arranged on the cast aluminum rotor, and the water can be drained to the edge of the notch to the maximum extent instead of splashing around the gap between the cast aluminum rotor and the stator due to high-speed rotation, so that the moisture is prevented from entering the gear box, and the waterproof effect is further improved.

Preferably, the maximum aperture of the notch is smaller than the outer diameter of the cast aluminum rotor, and the side surface of the notch is provided with a slope which is formed by extending from the maximum aperture of the notch to the side surface of the cast aluminum rotor. The slope plays the effect of drainage, is favorable to draining the water in the clearance between cast aluminium rotor and the stator to notch department again downwards dripping.

Preferably, an intersection point of an extension line along the extension of the slope and the upper end surface of the annular projection is located outside the annular projection. When the motor is in high-speed rotation, the water that flows out is along slope downwards near the straight line drippage, falls on the bellied lateral wall of annular for water can not enter into in the input port from bellied upper end of annular, further improves water-proof effects.

Preferably, the connection between the slope and the notch is transited by a fillet. The fillet plays the effect of buffering, when the translation rate that prevents the drop of water is higher, receives the rigidity impact and breaks in slope and notch department, splashes to the gear box inside to make water-proof effects obtain further promotion.

Preferably, the slope is a smooth plane or a concave smooth curved surface. The slope is not convex and smooth, and when water moves to the notch along the slope, the speed direction of water drops cannot point to the input port, so that the waterproof effect under the condition of high-speed movement is further improved.

Preferably, the junction of the outer side of the annular bulge and the gear box is in fillet transition. Annular arch and gear box junction are by the fillet transition, can prevent on the one hand that water from piling up in the junction, and on the other hand also plays the effect of buffering, prevents to drop to beat the drop of water on the protruding lateral wall of annular and flies the splash once more to improve water-proof effects.

The utility model has the advantages that: through setting up motor play axle head self and forming the structure that prevents the refluence, need not to assemble waterproof gasket, can realize the water-proof effects between motor output and the gear box input, both guaranteed the sealed of gear box, make simple structure again, practiced thrift installation cost and later maintenance's cost.

Drawings

Fig. 1 is an axial view of the waterproof structure of the motor output shaft end of the present invention.

Fig. 2 is a rotary sectional view of the waterproof structure at the output shaft end of the motor of the present invention.

Fig. 3 is a partial enlarged view of a cross-sectional view of a waterproof structure of an output shaft end of the motor of the present invention.

Detailed Description

The invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1, 2 and 3, the waterproof structure for the output shaft end of the motor comprises a motor body 1 and a gear box 2 connected with the motor body 1, wherein the motor body 1 comprises a rotor shaft 3, a cast aluminum rotor 7 and a stator 8, the cast aluminum rotor 7 is fixed outside the rotor shaft 3, the cast aluminum rotor 7 and the stator 8 are rotatably connected inside the stator 8, an input port 4 is arranged on the gear box 2, one end of the rotor shaft 3 extends out of the motor body 1 and extends into the gear box 2 through the input port 4, a notch 5 is arranged at one end of the motor body 1 close to the output end of the rotor shaft 3, the notch 5 is positioned on the cast aluminum rotor 7, the notch 5 is inwards concave along the radial direction, an annular bulge 6 is arranged on the circumference of the input port 4 of the gear box 2, and the height of the annular bulge 6 is higher than the height of the input port 2 close to the end face of the input port 4. Form the structure of preventing flowing backwards of motor output through notch 5, when rivers were to the output of motor, notch 5 is with the help of gravity, make water not to the rotation center gathering of rotor shaft 3, but pile up in the edge of notch 5, when gathering to the certain extent, the whereabouts is in the protruding 6 outsides of annular, input port 4 is protected to protruding 6 of annular, make the water that produces in the motor can not permeate gear box 2 from the output of motor, bearing and gear in the protection gear box 2, form the waterproof construction who need not the buckler, moreover, the steam generator is simple in structure, and is convenient to operate, when guaranteeing waterproof performance, the cost is reduced.

As shown in fig. 3, the maximum aperture of the notch 5 is larger than the maximum outer diameter of the annular protrusion 6, the maximum aperture of the notch 5 is smaller than the outer diameter of the cast aluminum rotor 7, a slope 9 is arranged on the side surface of the notch 5, the slope 9 is a smooth plane or an inward concave smooth curved surface, the slope 9 is formed by extending the maximum aperture of the notch 5 to the side surface of the cast aluminum rotor 7, and the intersection point of the extended extension line of the slope 9 and the upper end surface of the annular protrusion 6 is located outside the annular protrusion 6. Notch 5's the biggest hole side also is notch 5's the lower extreme, and rivers gathering is in notch 5's edge, when gathering to a certain extent, breaks through the tensile of water surface and drips downwards, and the perpendicular drop of this moment can not fall into inside gear box 2 in the protruding 6 outside of annular, has further improved water-proof effects.

When the motor works, the cast aluminum rotor 7 rotates along with the rotor shaft 3, moisture in the motor flows out from a gap between the cast aluminum rotor 7 and the stator 8, the notch 5 is arranged on the cast aluminum rotor 7, water can be drained to the edge of the notch 5 to the greatest extent, splashing around the gap between the cast aluminum rotor 7 and the stator 8 due to high-speed rotation is prevented, and therefore the moisture is prevented from entering the gear box 2, the slope 9 plays a role of drainage, the water in the gap between the cast aluminum rotor 7 and the stator 8 is drained to the notch 5 and then drips downwards, the flowing water drips downwards along the slope 9 to be close to a straight line and falls on the side wall of the annular bulge 6, the water cannot enter the input port 4 from the upper end of the annular bulge 6, and the waterproof effect is further improved.

As shown in FIG. 3, the connection between the slope 9 and the notch 5 is transited by a fillet 10, and the connection between the outer side of the annular bulge 6 and the gear box 2 is transited by a fillet 10. The fillet 10 of the junction of slope 9 and notch 5 plays the effect of buffering, when the moving speed that prevents the drop of water is higher, receives the rigidity impact and breaks in slope 9 and notch 5 department, splashes to gear box 2 inside to make water-proof effects obtain further promotion. Annular bulge 6 passes through by fillet 10 with gear box 2 junction, can prevent on the one hand that water from piling up in the junction, and on the other hand also plays the effect of buffering, prevents to fall to beat the drop of water on annular bulge 6 lateral wall and flies to open once more to improve water-proof effects.

Preferably, the slope 9 is not convex and smooth, and when water moves along the slope 9 to the notch 5, the speed direction of the water drop is not directed to the input port 4, so that the waterproof effect in the case of high-speed movement is further improved.

Claims

1. The utility model provides a motor goes out waterproof construction of axle end, its characterized in that, includes motor body and the gear box that links to each other with motor body, motor body includes the rotor shaft, be equipped with the input port on the gear box, the one end of rotor shaft extends to motor body outward and passes through the inside of gear box is stretched into to the input port, motor body is close to the one end of rotor shaft output and is equipped with the notch, and the notch is interior concavity along radially outwards following, the input port border of gear box is equipped with the annular arch, and the bellied height of annular is higher than the height that is close to the input port terminal surface on the gear box.

2. The motor shaft-outlet end waterproof structure according to claim 1, wherein a maximum aperture of the notch is larger than a maximum outer diameter of the annular projection.

3. The waterproof structure for the shaft outlet end of the motor as claimed in claim 1, wherein the motor body comprises a cast aluminum rotor and a stator, the cast aluminum rotor is fixed on the outer portion of the rotor shaft, the cast aluminum rotor and the stator are rotatably connected on the inner portion of the stator, and the notch is formed in the cast aluminum rotor.

4. The motor shaft outlet end waterproof structure according to claim 3, wherein the maximum aperture of the notch is smaller than the outer diameter of the cast aluminum rotor, and the side surface of the notch is provided with a slope formed by extending from the maximum aperture of the notch to the side surface of the cast aluminum rotor.

5. The motor output shaft end waterproof structure according to claim 4, wherein an intersection point of an extended extension line along the slope and an upper end face of the annular projection is located outside the annular projection.

6. The motor shaft outlet end waterproof structure of claim 4, wherein the connection between the slope and the notch is formed by a rounded transition.

7. The waterproof structure for the motor output shaft end according to claim 4 or 6, wherein the slope is a smooth plane or an inward concave smooth curved surface.

8. The motor shaft outlet end waterproof structure as claimed in claim 1, wherein the junction of the outer side of the annular protrusion and the gear box is in fillet transition.